tools/testing/selftests/bpf/prog_tests/btf.c

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /* Copyright (c) 2018 Facebook */
   3
   4 #include <linux/bpf.h>
   5 #include <linux/btf.h>
   6 #include <linux/err.h>
   7 #include <linux/kernel.h>
   8 #include <linux/filter.h>
   9 #include <linux/unistd.h>
  10 #include <bpf/bpf.h>
  11 #include <libelf.h>
  12 #include <gelf.h>
  13 #include <string.h>
  14 #include <stdlib.h>
  15 #include <stdio.h>
  16 #include <stdarg.h>
  17 #include <unistd.h>
  18 #include <fcntl.h>
  19 #include <errno.h>
  20 #include <assert.h>
  21 #include <bpf/libbpf.h>
  22 #include <bpf/btf.h>
  23
  24 #include "bpf_util.h"
  25 #include "../test_btf.h"
  26 #include "test_progs.h"
  27
  28 #define MAX_INSNS       512
  29 #define MAX_SUBPROGS    16
  30
  31 static int duration = 0;
  32 static bool always_log;
  33
  34 #undef CHECK
  35 #define CHECK(condition, format...) _CHECK(condition, "check", duration, format)
  36
  37 #define NAME_TBD 0xdeadb33f
  38
  39 #define NAME_NTH(N) (0xfffe0000 | N)
  40 #define IS_NAME_NTH(X) ((X & 0xffff0000) == 0xfffe0000)
  41 #define GET_NAME_NTH_IDX(X) (X & 0x0000ffff)
  42
  43 #define MAX_NR_RAW_U32 1024
  44 #define BTF_LOG_BUF_SIZE 65535
  45
  46 static char btf_log_buf[BTF_LOG_BUF_SIZE];
  47
  48 static struct btf_header hdr_tmpl = {
  49         .magic = BTF_MAGIC,
  50         .version = BTF_VERSION,
  51         .hdr_len = sizeof(struct btf_header),
  52 };
  53
  54 /* several different mapv kinds(types) supported by pprint */
  55 enum pprint_mapv_kind_t {
  56         PPRINT_MAPV_KIND_BASIC = 0,
  57         PPRINT_MAPV_KIND_INT128,
  58 };
  59
  60 struct btf_raw_test {
  61         const char *descr;
  62         const char *str_sec;
  63         const char *map_name;
  64         const char *err_str;
  65         __u32 raw_types[MAX_NR_RAW_U32];
  66         __u32 str_sec_size;
  67         enum bpf_map_type map_type;
  68         __u32 key_size;
  69         __u32 value_size;
  70         __u32 key_type_id;
  71         __u32 value_type_id;
  72         __u32 max_entries;
  73         bool btf_load_err;
  74         bool map_create_err;
  75         bool ordered_map;
  76         bool lossless_map;
  77         bool percpu_map;
  78         int hdr_len_delta;
  79         int type_off_delta;
  80         int str_off_delta;
  81         int str_len_delta;
  82         enum pprint_mapv_kind_t mapv_kind;
  83 };
  84
  85 #define BTF_STR_SEC(str) \
  86         .str_sec = str, .str_sec_size = sizeof(str)
  87
  88 static struct btf_raw_test raw_tests[] = {
  89 /* enum E {
  90  *     E0,
  91  *     E1,
  92  * };
  93  *
  94  * struct A {
  95  *      unsigned long long m;
  96  *      int n;
  97  *      char o;
  98  *      [3 bytes hole]
  99  *      int p[8];
 100  *      int q[4][8];
 101  *      enum E r;
 102  * };
 103  */
 104 {
 105         .descr = "struct test #1",
 106         .raw_types = {
 107                 /* int */
 108                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 109                 /* unsigned long long */
 110                 BTF_TYPE_INT_ENC(0, 0, 0, 64, 8),               /* [2] */
 111                 /* char */
 112                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 8, 1),   /* [3] */
 113                 /* int[8] */
 114                 BTF_TYPE_ARRAY_ENC(1, 1, 8),                    /* [4] */
 115                 /* struct A { */                                /* [5] */
 116                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 6), 180),
 117                 BTF_MEMBER_ENC(NAME_TBD, 2, 0), /* unsigned long long m;*/
 118                 BTF_MEMBER_ENC(NAME_TBD, 1, 64),/* int n;               */
 119                 BTF_MEMBER_ENC(NAME_TBD, 3, 96),/* char o;              */
 120                 BTF_MEMBER_ENC(NAME_TBD, 4, 128),/* int p[8]            */
 121                 BTF_MEMBER_ENC(NAME_TBD, 6, 384),/* int q[4][8]         */
 122                 BTF_MEMBER_ENC(NAME_TBD, 7, 1408), /* enum E r          */
 123                 /* } */
 124                 /* int[4][8] */
 125                 BTF_TYPE_ARRAY_ENC(4, 1, 4),                    /* [6] */
 126                 /* enum E */                                    /* [7] */
 127                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 2), sizeof(int)),
 128                 BTF_ENUM_ENC(NAME_TBD, 0),
 129                 BTF_ENUM_ENC(NAME_TBD, 1),
 130                 BTF_END_RAW,
 131         },
 132         .str_sec = "\0A\0m\0n\0o\0p\0q\0r\0E\0E0\0E1",
 133         .str_sec_size = sizeof("\0A\0m\0n\0o\0p\0q\0r\0E\0E0\0E1"),
 134         .map_type = BPF_MAP_TYPE_ARRAY,
 135         .map_name = "struct_test1_map",
 136         .key_size = sizeof(int),
 137         .value_size = 180,
 138         .key_type_id = 1,
 139         .value_type_id = 5,
 140         .max_entries = 4,
 141 },
 142
 143 /* typedef struct b Struct_B;
 144  *
 145  * struct A {
 146  *     int m;
 147  *     struct b n[4];
 148  *     const Struct_B o[4];
 149  * };
 150  *
 151  * struct B {
 152  *     int m;
 153  *     int n;
 154  * };
 155  */
 156 {
 157         .descr = "struct test #2",
 158         .raw_types = {
 159                 /* int */                                       /* [1] */
 160                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
 161                 /* struct b [4] */                              /* [2] */
 162                 BTF_TYPE_ARRAY_ENC(4, 1, 4),
 163
 164                 /* struct A { */                                /* [3] */
 165                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 3), 68),
 166                 BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int m;               */
 167                 BTF_MEMBER_ENC(NAME_TBD, 2, 32),/* struct B n[4]        */
 168                 BTF_MEMBER_ENC(NAME_TBD, 8, 288),/* const Struct_B o[4];*/
 169                 /* } */
 170
 171                 /* struct B { */                                /* [4] */
 172                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), 8),
 173                 BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int m; */
 174                 BTF_MEMBER_ENC(NAME_TBD, 1, 32),/* int n; */
 175                 /* } */
 176
 177                 /* const int */                                 /* [5] */
 178                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 1),
 179                 /* typedef struct b Struct_B */ /* [6] */
 180                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_TYPEDEF, 0, 0), 4),
 181                 /* const Struct_B */                            /* [7] */
 182                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 6),
 183                 /* const Struct_B [4] */                        /* [8] */
 184                 BTF_TYPE_ARRAY_ENC(7, 1, 4),
 185                 BTF_END_RAW,
 186         },
 187         .str_sec = "\0A\0m\0n\0o\0B\0m\0n\0Struct_B",
 188         .str_sec_size = sizeof("\0A\0m\0n\0o\0B\0m\0n\0Struct_B"),
 189         .map_type = BPF_MAP_TYPE_ARRAY,
 190         .map_name = "struct_test2_map",
 191         .key_size = sizeof(int),
 192         .value_size = 68,
 193         .key_type_id = 1,
 194         .value_type_id = 3,
 195         .max_entries = 4,
 196 },
 197 {
 198         .descr = "struct test #3 Invalid member offset",
 199         .raw_types = {
 200                 /* int */                                       /* [1] */
 201                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
 202                 /* int64 */                                     /* [2] */
 203                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 64, 8),
 204
 205                 /* struct A { */                                /* [3] */
 206                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), 16),
 207                 BTF_MEMBER_ENC(NAME_TBD, 1, 64),        /* int m;               */
 208                 BTF_MEMBER_ENC(NAME_TBD, 2, 0),         /* int64 n; */
 209                 /* } */
 210                 BTF_END_RAW,
 211         },
 212         .str_sec = "\0A\0m\0n\0",
 213         .str_sec_size = sizeof("\0A\0m\0n\0"),
 214         .map_type = BPF_MAP_TYPE_ARRAY,
 215         .map_name = "struct_test3_map",
 216         .key_size = sizeof(int),
 217         .value_size = 16,
 218         .key_type_id = 1,
 219         .value_type_id = 3,
 220         .max_entries = 4,
 221         .btf_load_err = true,
 222         .err_str = "Invalid member bits_offset",
 223 },
 224 /*
 225  * struct A {
 226  *      unsigned long long m;
 227  *      int n;
 228  *      char o;
 229  *      [3 bytes hole]
 230  *      int p[8];
 231  * };
 232  */
 233 {
 234         .descr = "global data test #1",
 235         .raw_types = {
 236                 /* int */
 237                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 238                 /* unsigned long long */
 239                 BTF_TYPE_INT_ENC(0, 0, 0, 64, 8),               /* [2] */
 240                 /* char */
 241                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 8, 1),   /* [3] */
 242                 /* int[8] */
 243                 BTF_TYPE_ARRAY_ENC(1, 1, 8),                    /* [4] */
 244                 /* struct A { */                                /* [5] */
 245                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 4), 48),
 246                 BTF_MEMBER_ENC(NAME_TBD, 2, 0), /* unsigned long long m;*/
 247                 BTF_MEMBER_ENC(NAME_TBD, 1, 64),/* int n;               */
 248                 BTF_MEMBER_ENC(NAME_TBD, 3, 96),/* char o;              */
 249                 BTF_MEMBER_ENC(NAME_TBD, 4, 128),/* int p[8]            */
 250                 /* } */
 251                 BTF_END_RAW,
 252         },
 253         .str_sec = "\0A\0m\0n\0o\0p",
 254         .str_sec_size = sizeof("\0A\0m\0n\0o\0p"),
 255         .map_type = BPF_MAP_TYPE_ARRAY,
 256         .map_name = "struct_test1_map",
 257         .key_size = sizeof(int),
 258         .value_size = 48,
 259         .key_type_id = 1,
 260         .value_type_id = 5,
 261         .max_entries = 4,
 262 },
 263 /*
 264  * struct A {
 265  *      unsigned long long m;
 266  *      int n;
 267  *      char o;
 268  *      [3 bytes hole]
 269  *      int p[8];
 270  * };
 271  * static struct A t; <- in .bss
 272  */
 273 {
 274         .descr = "global data test #2",
 275         .raw_types = {
 276                 /* int */
 277                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 278                 /* unsigned long long */
 279                 BTF_TYPE_INT_ENC(0, 0, 0, 64, 8),               /* [2] */
 280                 /* char */
 281                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 8, 1),   /* [3] */
 282                 /* int[8] */
 283                 BTF_TYPE_ARRAY_ENC(1, 1, 8),                    /* [4] */
 284                 /* struct A { */                                /* [5] */
 285                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 4), 48),
 286                 BTF_MEMBER_ENC(NAME_TBD, 2, 0), /* unsigned long long m;*/
 287                 BTF_MEMBER_ENC(NAME_TBD, 1, 64),/* int n;               */
 288                 BTF_MEMBER_ENC(NAME_TBD, 3, 96),/* char o;              */
 289                 BTF_MEMBER_ENC(NAME_TBD, 4, 128),/* int p[8]            */
 290                 /* } */
 291                 /* static struct A t */
 292                 BTF_VAR_ENC(NAME_TBD, 5, 0),                    /* [6] */
 293                 /* .bss section */                              /* [7] */
 294                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 48),
 295                 BTF_VAR_SECINFO_ENC(6, 0, 48),
 296                 BTF_END_RAW,
 297         },
 298         .str_sec = "\0A\0m\0n\0o\0p\0t\0.bss",
 299         .str_sec_size = sizeof("\0A\0m\0n\0o\0p\0t\0.bss"),
 300         .map_type = BPF_MAP_TYPE_ARRAY,
 301         .map_name = ".bss",
 302         .key_size = sizeof(int),
 303         .value_size = 48,
 304         .key_type_id = 0,
 305         .value_type_id = 7,
 306         .max_entries = 1,
 307 },
 308 {
 309         .descr = "global data test #3",
 310         .raw_types = {
 311                 /* int */
 312                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 313                 /* static int t */
 314                 BTF_VAR_ENC(NAME_TBD, 1, 0),                    /* [2] */
 315                 /* .bss section */                              /* [3] */
 316                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 4),
 317                 BTF_VAR_SECINFO_ENC(2, 0, 4),
 318                 BTF_END_RAW,
 319         },
 320         .str_sec = "\0t\0.bss",
 321         .str_sec_size = sizeof("\0t\0.bss"),
 322         .map_type = BPF_MAP_TYPE_ARRAY,
 323         .map_name = ".bss",
 324         .key_size = sizeof(int),
 325         .value_size = 4,
 326         .key_type_id = 0,
 327         .value_type_id = 3,
 328         .max_entries = 1,
 329 },
 330 {
 331         .descr = "global data test #4, unsupported linkage",
 332         .raw_types = {
 333                 /* int */
 334                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 335                 /* static int t */
 336                 BTF_VAR_ENC(NAME_TBD, 1, 2),                    /* [2] */
 337                 /* .bss section */                              /* [3] */
 338                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 4),
 339                 BTF_VAR_SECINFO_ENC(2, 0, 4),
 340                 BTF_END_RAW,
 341         },
 342         .str_sec = "\0t\0.bss",
 343         .str_sec_size = sizeof("\0t\0.bss"),
 344         .map_type = BPF_MAP_TYPE_ARRAY,
 345         .map_name = ".bss",
 346         .key_size = sizeof(int),
 347         .value_size = 4,
 348         .key_type_id = 0,
 349         .value_type_id = 3,
 350         .max_entries = 1,
 351         .btf_load_err = true,
 352         .err_str = "Linkage not supported",
 353 },
 354 {
 355         .descr = "global data test #5, invalid var type",
 356         .raw_types = {
 357                 /* static void t */
 358                 BTF_VAR_ENC(NAME_TBD, 0, 0),                    /* [1] */
 359                 /* .bss section */                              /* [2] */
 360                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 4),
 361                 BTF_VAR_SECINFO_ENC(1, 0, 4),
 362                 BTF_END_RAW,
 363         },
 364         .str_sec = "\0t\0.bss",
 365         .str_sec_size = sizeof("\0t\0.bss"),
 366         .map_type = BPF_MAP_TYPE_ARRAY,
 367         .map_name = ".bss",
 368         .key_size = sizeof(int),
 369         .value_size = 4,
 370         .key_type_id = 0,
 371         .value_type_id = 2,
 372         .max_entries = 1,
 373         .btf_load_err = true,
 374         .err_str = "Invalid type_id",
 375 },
 376 {
 377         .descr = "global data test #6, invalid var type (fwd type)",
 378         .raw_types = {
 379                 /* union A */
 380                 BTF_TYPE_ENC(NAME_TBD,
 381                              BTF_INFO_ENC(BTF_KIND_FWD, 1, 0), 0), /* [1] */
 382                 /* static union A t */
 383                 BTF_VAR_ENC(NAME_TBD, 1, 0),                    /* [2] */
 384                 /* .bss section */                              /* [3] */
 385                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 4),
 386                 BTF_VAR_SECINFO_ENC(2, 0, 4),
 387                 BTF_END_RAW,
 388         },
 389         .str_sec = "\0A\0t\0.bss",
 390         .str_sec_size = sizeof("\0A\0t\0.bss"),
 391         .map_type = BPF_MAP_TYPE_ARRAY,
 392         .map_name = ".bss",
 393         .key_size = sizeof(int),
 394         .value_size = 4,
 395         .key_type_id = 0,
 396         .value_type_id = 2,
 397         .max_entries = 1,
 398         .btf_load_err = true,
 399         .err_str = "Invalid type",
 400 },
 401 {
 402         .descr = "global data test #7, invalid var type (fwd type)",
 403         .raw_types = {
 404                 /* union A */
 405                 BTF_TYPE_ENC(NAME_TBD,
 406                              BTF_INFO_ENC(BTF_KIND_FWD, 1, 0), 0), /* [1] */
 407                 /* static union A t */
 408                 BTF_VAR_ENC(NAME_TBD, 1, 0),                    /* [2] */
 409                 /* .bss section */                              /* [3] */
 410                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 4),
 411                 BTF_VAR_SECINFO_ENC(1, 0, 4),
 412                 BTF_END_RAW,
 413         },
 414         .str_sec = "\0A\0t\0.bss",
 415         .str_sec_size = sizeof("\0A\0t\0.bss"),
 416         .map_type = BPF_MAP_TYPE_ARRAY,
 417         .map_name = ".bss",
 418         .key_size = sizeof(int),
 419         .value_size = 4,
 420         .key_type_id = 0,
 421         .value_type_id = 2,
 422         .max_entries = 1,
 423         .btf_load_err = true,
 424         .err_str = "Invalid type",
 425 },
 426 {
 427         .descr = "global data test #8, invalid var size",
 428         .raw_types = {
 429                 /* int */
 430                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 431                 /* unsigned long long */
 432                 BTF_TYPE_INT_ENC(0, 0, 0, 64, 8),               /* [2] */
 433                 /* char */
 434                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 8, 1),   /* [3] */
 435                 /* int[8] */
 436                 BTF_TYPE_ARRAY_ENC(1, 1, 8),                    /* [4] */
 437                 /* struct A { */                                /* [5] */
 438                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 4), 48),
 439                 BTF_MEMBER_ENC(NAME_TBD, 2, 0), /* unsigned long long m;*/
 440                 BTF_MEMBER_ENC(NAME_TBD, 1, 64),/* int n;               */
 441                 BTF_MEMBER_ENC(NAME_TBD, 3, 96),/* char o;              */
 442                 BTF_MEMBER_ENC(NAME_TBD, 4, 128),/* int p[8]            */
 443                 /* } */
 444                 /* static struct A t */
 445                 BTF_VAR_ENC(NAME_TBD, 5, 0),                    /* [6] */
 446                 /* .bss section */                              /* [7] */
 447                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 48),
 448                 BTF_VAR_SECINFO_ENC(6, 0, 47),
 449                 BTF_END_RAW,
 450         },
 451         .str_sec = "\0A\0m\0n\0o\0p\0t\0.bss",
 452         .str_sec_size = sizeof("\0A\0m\0n\0o\0p\0t\0.bss"),
 453         .map_type = BPF_MAP_TYPE_ARRAY,
 454         .map_name = ".bss",
 455         .key_size = sizeof(int),
 456         .value_size = 48,
 457         .key_type_id = 0,
 458         .value_type_id = 7,
 459         .max_entries = 1,
 460         .btf_load_err = true,
 461         .err_str = "Invalid size",
 462 },
 463 {
 464         .descr = "global data test #9, invalid var size",
 465         .raw_types = {
 466                 /* int */
 467                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 468                 /* unsigned long long */
 469                 BTF_TYPE_INT_ENC(0, 0, 0, 64, 8),               /* [2] */
 470                 /* char */
 471                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 8, 1),   /* [3] */
 472                 /* int[8] */
 473                 BTF_TYPE_ARRAY_ENC(1, 1, 8),                    /* [4] */
 474                 /* struct A { */                                /* [5] */
 475                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 4), 48),
 476                 BTF_MEMBER_ENC(NAME_TBD, 2, 0), /* unsigned long long m;*/
 477                 BTF_MEMBER_ENC(NAME_TBD, 1, 64),/* int n;               */
 478                 BTF_MEMBER_ENC(NAME_TBD, 3, 96),/* char o;              */
 479                 BTF_MEMBER_ENC(NAME_TBD, 4, 128),/* int p[8]            */
 480                 /* } */
 481                 /* static struct A t */
 482                 BTF_VAR_ENC(NAME_TBD, 5, 0),                    /* [6] */
 483                 /* .bss section */                              /* [7] */
 484                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 46),
 485                 BTF_VAR_SECINFO_ENC(6, 0, 48),
 486                 BTF_END_RAW,
 487         },
 488         .str_sec = "\0A\0m\0n\0o\0p\0t\0.bss",
 489         .str_sec_size = sizeof("\0A\0m\0n\0o\0p\0t\0.bss"),
 490         .map_type = BPF_MAP_TYPE_ARRAY,
 491         .map_name = ".bss",
 492         .key_size = sizeof(int),
 493         .value_size = 48,
 494         .key_type_id = 0,
 495         .value_type_id = 7,
 496         .max_entries = 1,
 497         .btf_load_err = true,
 498         .err_str = "Invalid size",
 499 },
 500 {
 501         .descr = "global data test #10, invalid var size",
 502         .raw_types = {
 503                 /* int */
 504                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 505                 /* unsigned long long */
 506                 BTF_TYPE_INT_ENC(0, 0, 0, 64, 8),               /* [2] */
 507                 /* char */
 508                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 8, 1),   /* [3] */
 509                 /* int[8] */
 510                 BTF_TYPE_ARRAY_ENC(1, 1, 8),                    /* [4] */
 511                 /* struct A { */                                /* [5] */
 512                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 4), 48),
 513                 BTF_MEMBER_ENC(NAME_TBD, 2, 0), /* unsigned long long m;*/
 514                 BTF_MEMBER_ENC(NAME_TBD, 1, 64),/* int n;               */
 515                 BTF_MEMBER_ENC(NAME_TBD, 3, 96),/* char o;              */
 516                 BTF_MEMBER_ENC(NAME_TBD, 4, 128),/* int p[8]            */
 517                 /* } */
 518                 /* static struct A t */
 519                 BTF_VAR_ENC(NAME_TBD, 5, 0),                    /* [6] */
 520                 /* .bss section */                              /* [7] */
 521                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 46),
 522                 BTF_VAR_SECINFO_ENC(6, 0, 46),
 523                 BTF_END_RAW,
 524         },
 525         .str_sec = "\0A\0m\0n\0o\0p\0t\0.bss",
 526         .str_sec_size = sizeof("\0A\0m\0n\0o\0p\0t\0.bss"),
 527         .map_type = BPF_MAP_TYPE_ARRAY,
 528         .map_name = ".bss",
 529         .key_size = sizeof(int),
 530         .value_size = 48,
 531         .key_type_id = 0,
 532         .value_type_id = 7,
 533         .max_entries = 1,
 534         .btf_load_err = true,
 535         .err_str = "Invalid size",
 536 },
 537 {
 538         .descr = "global data test #11, multiple section members",
 539         .raw_types = {
 540                 /* int */
 541                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 542                 /* unsigned long long */
 543                 BTF_TYPE_INT_ENC(0, 0, 0, 64, 8),               /* [2] */
 544                 /* char */
 545                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 8, 1),   /* [3] */
 546                 /* int[8] */
 547                 BTF_TYPE_ARRAY_ENC(1, 1, 8),                    /* [4] */
 548                 /* struct A { */                                /* [5] */
 549                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 4), 48),
 550                 BTF_MEMBER_ENC(NAME_TBD, 2, 0), /* unsigned long long m;*/
 551                 BTF_MEMBER_ENC(NAME_TBD, 1, 64),/* int n;               */
 552                 BTF_MEMBER_ENC(NAME_TBD, 3, 96),/* char o;              */
 553                 BTF_MEMBER_ENC(NAME_TBD, 4, 128),/* int p[8]            */
 554                 /* } */
 555                 /* static struct A t */
 556                 BTF_VAR_ENC(NAME_TBD, 5, 0),                    /* [6] */
 557                 /* static int u */
 558                 BTF_VAR_ENC(NAME_TBD, 1, 0),                    /* [7] */
 559                 /* .bss section */                              /* [8] */
 560                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 2), 62),
 561                 BTF_VAR_SECINFO_ENC(6, 10, 48),
 562                 BTF_VAR_SECINFO_ENC(7, 58, 4),
 563                 BTF_END_RAW,
 564         },
 565         .str_sec = "\0A\0m\0n\0o\0p\0t\0u\0.bss",
 566         .str_sec_size = sizeof("\0A\0m\0n\0o\0p\0t\0u\0.bss"),
 567         .map_type = BPF_MAP_TYPE_ARRAY,
 568         .map_name = ".bss",
 569         .key_size = sizeof(int),
 570         .value_size = 62,
 571         .key_type_id = 0,
 572         .value_type_id = 8,
 573         .max_entries = 1,
 574 },
 575 {
 576         .descr = "global data test #12, invalid offset",
 577         .raw_types = {
 578                 /* int */
 579                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 580                 /* unsigned long long */
 581                 BTF_TYPE_INT_ENC(0, 0, 0, 64, 8),               /* [2] */
 582                 /* char */
 583                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 8, 1),   /* [3] */
 584                 /* int[8] */
 585                 BTF_TYPE_ARRAY_ENC(1, 1, 8),                    /* [4] */
 586                 /* struct A { */                                /* [5] */
 587                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 4), 48),
 588                 BTF_MEMBER_ENC(NAME_TBD, 2, 0), /* unsigned long long m;*/
 589                 BTF_MEMBER_ENC(NAME_TBD, 1, 64),/* int n;               */
 590                 BTF_MEMBER_ENC(NAME_TBD, 3, 96),/* char o;              */
 591                 BTF_MEMBER_ENC(NAME_TBD, 4, 128),/* int p[8]            */
 592                 /* } */
 593                 /* static struct A t */
 594                 BTF_VAR_ENC(NAME_TBD, 5, 0),                    /* [6] */
 595                 /* static int u */
 596                 BTF_VAR_ENC(NAME_TBD, 1, 0),                    /* [7] */
 597                 /* .bss section */                              /* [8] */
 598                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 2), 62),
 599                 BTF_VAR_SECINFO_ENC(6, 10, 48),
 600                 BTF_VAR_SECINFO_ENC(7, 60, 4),
 601                 BTF_END_RAW,
 602         },
 603         .str_sec = "\0A\0m\0n\0o\0p\0t\0u\0.bss",
 604         .str_sec_size = sizeof("\0A\0m\0n\0o\0p\0t\0u\0.bss"),
 605         .map_type = BPF_MAP_TYPE_ARRAY,
 606         .map_name = ".bss",
 607         .key_size = sizeof(int),
 608         .value_size = 62,
 609         .key_type_id = 0,
 610         .value_type_id = 8,
 611         .max_entries = 1,
 612         .btf_load_err = true,
 613         .err_str = "Invalid offset+size",
 614 },
 615 {
 616         .descr = "global data test #13, invalid offset",
 617         .raw_types = {
 618                 /* int */
 619                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 620                 /* unsigned long long */
 621                 BTF_TYPE_INT_ENC(0, 0, 0, 64, 8),               /* [2] */
 622                 /* char */
 623                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 8, 1),   /* [3] */
 624                 /* int[8] */
 625                 BTF_TYPE_ARRAY_ENC(1, 1, 8),                    /* [4] */
 626                 /* struct A { */                                /* [5] */
 627                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 4), 48),
 628                 BTF_MEMBER_ENC(NAME_TBD, 2, 0), /* unsigned long long m;*/
 629                 BTF_MEMBER_ENC(NAME_TBD, 1, 64),/* int n;               */
 630                 BTF_MEMBER_ENC(NAME_TBD, 3, 96),/* char o;              */
 631                 BTF_MEMBER_ENC(NAME_TBD, 4, 128),/* int p[8]            */
 632                 /* } */
 633                 /* static struct A t */
 634                 BTF_VAR_ENC(NAME_TBD, 5, 0),                    /* [6] */
 635                 /* static int u */
 636                 BTF_VAR_ENC(NAME_TBD, 1, 0),                    /* [7] */
 637                 /* .bss section */                              /* [8] */
 638                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 2), 62),
 639                 BTF_VAR_SECINFO_ENC(6, 10, 48),
 640                 BTF_VAR_SECINFO_ENC(7, 12, 4),
 641                 BTF_END_RAW,
 642         },
 643         .str_sec = "\0A\0m\0n\0o\0p\0t\0u\0.bss",
 644         .str_sec_size = sizeof("\0A\0m\0n\0o\0p\0t\0u\0.bss"),
 645         .map_type = BPF_MAP_TYPE_ARRAY,
 646         .map_name = ".bss",
 647         .key_size = sizeof(int),
 648         .value_size = 62,
 649         .key_type_id = 0,
 650         .value_type_id = 8,
 651         .max_entries = 1,
 652         .btf_load_err = true,
 653         .err_str = "Invalid offset",
 654 },
 655 {
 656         .descr = "global data test #14, invalid offset",
 657         .raw_types = {
 658                 /* int */
 659                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 660                 /* unsigned long long */
 661                 BTF_TYPE_INT_ENC(0, 0, 0, 64, 8),               /* [2] */
 662                 /* char */
 663                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 8, 1),   /* [3] */
 664                 /* int[8] */
 665                 BTF_TYPE_ARRAY_ENC(1, 1, 8),                    /* [4] */
 666                 /* struct A { */                                /* [5] */
 667                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 4), 48),
 668                 BTF_MEMBER_ENC(NAME_TBD, 2, 0), /* unsigned long long m;*/
 669                 BTF_MEMBER_ENC(NAME_TBD, 1, 64),/* int n;               */
 670                 BTF_MEMBER_ENC(NAME_TBD, 3, 96),/* char o;              */
 671                 BTF_MEMBER_ENC(NAME_TBD, 4, 128),/* int p[8]            */
 672                 /* } */
 673                 /* static struct A t */
 674                 BTF_VAR_ENC(NAME_TBD, 5, 0),                    /* [6] */
 675                 /* static int u */
 676                 BTF_VAR_ENC(NAME_TBD, 1, 0),                    /* [7] */
 677                 /* .bss section */                              /* [8] */
 678                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 2), 62),
 679                 BTF_VAR_SECINFO_ENC(7, 58, 4),
 680                 BTF_VAR_SECINFO_ENC(6, 10, 48),
 681                 BTF_END_RAW,
 682         },
 683         .str_sec = "\0A\0m\0n\0o\0p\0t\0u\0.bss",
 684         .str_sec_size = sizeof("\0A\0m\0n\0o\0p\0t\0u\0.bss"),
 685         .map_type = BPF_MAP_TYPE_ARRAY,
 686         .map_name = ".bss",
 687         .key_size = sizeof(int),
 688         .value_size = 62,
 689         .key_type_id = 0,
 690         .value_type_id = 8,
 691         .max_entries = 1,
 692         .btf_load_err = true,
 693         .err_str = "Invalid offset",
 694 },
 695 {
 696         .descr = "global data test #15, not var kind",
 697         .raw_types = {
 698                 /* int */
 699                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 700                 BTF_VAR_ENC(NAME_TBD, 1, 0),                    /* [2] */
 701                 /* .bss section */                              /* [3] */
 702                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 4),
 703                 BTF_VAR_SECINFO_ENC(1, 0, 4),
 704                 BTF_END_RAW,
 705         },
 706         .str_sec = "\0A\0t\0.bss",
 707         .str_sec_size = sizeof("\0A\0t\0.bss"),
 708         .map_type = BPF_MAP_TYPE_ARRAY,
 709         .map_name = ".bss",
 710         .key_size = sizeof(int),
 711         .value_size = 4,
 712         .key_type_id = 0,
 713         .value_type_id = 3,
 714         .max_entries = 1,
 715         .btf_load_err = true,
 716         .err_str = "Not a VAR kind member",
 717 },
 718 {
 719         .descr = "global data test #16, invalid var referencing sec",
 720         .raw_types = {
 721                 /* int */
 722                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 723                 BTF_VAR_ENC(NAME_TBD, 5, 0),                    /* [2] */
 724                 BTF_VAR_ENC(NAME_TBD, 2, 0),                    /* [3] */
 725                 /* a section */                                 /* [4] */
 726                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 4),
 727                 BTF_VAR_SECINFO_ENC(3, 0, 4),
 728                 /* a section */                                 /* [5] */
 729                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 4),
 730                 BTF_VAR_SECINFO_ENC(6, 0, 4),
 731                 BTF_VAR_ENC(NAME_TBD, 1, 0),                    /* [6] */
 732                 BTF_END_RAW,
 733         },
 734         .str_sec = "\0A\0t\0s\0a\0a",
 735         .str_sec_size = sizeof("\0A\0t\0s\0a\0a"),
 736         .map_type = BPF_MAP_TYPE_ARRAY,
 737         .map_name = ".bss",
 738         .key_size = sizeof(int),
 739         .value_size = 4,
 740         .key_type_id = 0,
 741         .value_type_id = 4,
 742         .max_entries = 1,
 743         .btf_load_err = true,
 744         .err_str = "Invalid type_id",
 745 },
 746 {
 747         .descr = "global data test #17, invalid var referencing var",
 748         .raw_types = {
 749                 /* int */
 750                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 751                 BTF_VAR_ENC(NAME_TBD, 1, 0),                    /* [2] */
 752                 BTF_VAR_ENC(NAME_TBD, 2, 0),                    /* [3] */
 753                 /* a section */                                 /* [4] */
 754                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 4),
 755                 BTF_VAR_SECINFO_ENC(3, 0, 4),
 756                 BTF_END_RAW,
 757         },
 758         .str_sec = "\0A\0t\0s\0a\0a",
 759         .str_sec_size = sizeof("\0A\0t\0s\0a\0a"),
 760         .map_type = BPF_MAP_TYPE_ARRAY,
 761         .map_name = ".bss",
 762         .key_size = sizeof(int),
 763         .value_size = 4,
 764         .key_type_id = 0,
 765         .value_type_id = 4,
 766         .max_entries = 1,
 767         .btf_load_err = true,
 768         .err_str = "Invalid type_id",
 769 },
 770 {
 771         .descr = "global data test #18, invalid var loop",
 772         .raw_types = {
 773                 /* int */
 774                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 775                 BTF_VAR_ENC(NAME_TBD, 2, 0),                    /* [2] */
 776                 /* .bss section */                              /* [3] */
 777                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 4),
 778                 BTF_VAR_SECINFO_ENC(2, 0, 4),
 779                 BTF_END_RAW,
 780         },
 781         .str_sec = "\0A\0t\0aaa",
 782         .str_sec_size = sizeof("\0A\0t\0aaa"),
 783         .map_type = BPF_MAP_TYPE_ARRAY,
 784         .map_name = ".bss",
 785         .key_size = sizeof(int),
 786         .value_size = 4,
 787         .key_type_id = 0,
 788         .value_type_id = 4,
 789         .max_entries = 1,
 790         .btf_load_err = true,
 791         .err_str = "Invalid type_id",
 792 },
 793 {
 794         .descr = "global data test #19, invalid var referencing var",
 795         .raw_types = {
 796                 /* int */
 797                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 798                 BTF_VAR_ENC(NAME_TBD, 3, 0),                    /* [2] */
 799                 BTF_VAR_ENC(NAME_TBD, 1, 0),                    /* [3] */
 800                 BTF_END_RAW,
 801         },
 802         .str_sec = "\0A\0t\0s\0a\0a",
 803         .str_sec_size = sizeof("\0A\0t\0s\0a\0a"),
 804         .map_type = BPF_MAP_TYPE_ARRAY,
 805         .map_name = ".bss",
 806         .key_size = sizeof(int),
 807         .value_size = 4,
 808         .key_type_id = 0,
 809         .value_type_id = 4,
 810         .max_entries = 1,
 811         .btf_load_err = true,
 812         .err_str = "Invalid type_id",
 813 },
 814 {
 815         .descr = "global data test #20, invalid ptr referencing var",
 816         .raw_types = {
 817                 /* int */
 818                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 819                 /* PTR type_id=3        */                      /* [2] */
 820                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 3),
 821                 BTF_VAR_ENC(NAME_TBD, 1, 0),                    /* [3] */
 822                 BTF_END_RAW,
 823         },
 824         .str_sec = "\0A\0t\0s\0a\0a",
 825         .str_sec_size = sizeof("\0A\0t\0s\0a\0a"),
 826         .map_type = BPF_MAP_TYPE_ARRAY,
 827         .map_name = ".bss",
 828         .key_size = sizeof(int),
 829         .value_size = 4,
 830         .key_type_id = 0,
 831         .value_type_id = 4,
 832         .max_entries = 1,
 833         .btf_load_err = true,
 834         .err_str = "Invalid type_id",
 835 },
 836 {
 837         .descr = "global data test #21, var included in struct",
 838         .raw_types = {
 839                 /* int */
 840                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 841                 /* struct A { */                                /* [2] */
 842                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), sizeof(int) * 2),
 843                 BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int m; */
 844                 BTF_MEMBER_ENC(NAME_TBD, 3, 32),/* VAR type_id=3; */
 845                 /* } */
 846                 BTF_VAR_ENC(NAME_TBD, 1, 0),                    /* [3] */
 847                 BTF_END_RAW,
 848         },
 849         .str_sec = "\0A\0t\0s\0a\0a",
 850         .str_sec_size = sizeof("\0A\0t\0s\0a\0a"),
 851         .map_type = BPF_MAP_TYPE_ARRAY,
 852         .map_name = ".bss",
 853         .key_size = sizeof(int),
 854         .value_size = 4,
 855         .key_type_id = 0,
 856         .value_type_id = 4,
 857         .max_entries = 1,
 858         .btf_load_err = true,
 859         .err_str = "Invalid member",
 860 },
 861 {
 862         .descr = "global data test #22, array of var",
 863         .raw_types = {
 864                 /* int */
 865                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
 866                 BTF_TYPE_ARRAY_ENC(3, 1, 4),                    /* [2] */
 867                 BTF_VAR_ENC(NAME_TBD, 1, 0),                    /* [3] */
 868                 BTF_END_RAW,
 869         },
 870         .str_sec = "\0A\0t\0s\0a\0a",
 871         .str_sec_size = sizeof("\0A\0t\0s\0a\0a"),
 872         .map_type = BPF_MAP_TYPE_ARRAY,
 873         .map_name = ".bss",
 874         .key_size = sizeof(int),
 875         .value_size = 4,
 876         .key_type_id = 0,
 877         .value_type_id = 4,
 878         .max_entries = 1,
 879         .btf_load_err = true,
 880         .err_str = "Invalid elem",
 881 },
 882 {
 883         .descr = "var after datasec, ptr followed by modifier",
 884         .raw_types = {
 885                 /* .bss section */                              /* [1] */
 886                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 2),
 887                         sizeof(void*)+4),
 888                 BTF_VAR_SECINFO_ENC(4, 0, sizeof(void*)),
 889                 BTF_VAR_SECINFO_ENC(6, sizeof(void*), 4),
 890                 /* int */                                       /* [2] */
 891                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
 892                 /* int* */                                      /* [3] */
 893                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 2),
 894                 BTF_VAR_ENC(NAME_TBD, 3, 0),                    /* [4] */
 895                 /* const int */                                 /* [5] */
 896                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 2),
 897                 BTF_VAR_ENC(NAME_TBD, 5, 0),                    /* [6] */
 898                 BTF_END_RAW,
 899         },
 900         .str_sec = "\0a\0b\0c\0",
 901         .str_sec_size = sizeof("\0a\0b\0c\0"),
 902         .map_type = BPF_MAP_TYPE_ARRAY,
 903         .map_name = ".bss",
 904         .key_size = sizeof(int),
 905         .value_size = sizeof(void*)+4,
 906         .key_type_id = 0,
 907         .value_type_id = 1,
 908         .max_entries = 1,
 909 },
 910 /* Test member exceeds the size of struct.
 911  *
 912  * struct A {
 913  *     int m;
 914  *     int n;
 915  * };
 916  */
 917 {
 918         .descr = "size check test #1",
 919         .raw_types = {
 920                 /* int */                                       /* [1] */
 921                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
 922                 /* struct A { */                                /* [2] */
 923                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), sizeof(int) * 2 -  1),
 924                 BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int m; */
 925                 BTF_MEMBER_ENC(NAME_TBD, 1, 32),/* int n; */
 926                 /* } */
 927                 BTF_END_RAW,
 928         },
 929         .str_sec = "\0A\0m\0n",
 930         .str_sec_size = sizeof("\0A\0m\0n"),
 931         .map_type = BPF_MAP_TYPE_ARRAY,
 932         .map_name = "size_check1_map",
 933         .key_size = sizeof(int),
 934         .value_size = 1,
 935         .key_type_id = 1,
 936         .value_type_id = 2,
 937         .max_entries = 4,
 938         .btf_load_err = true,
 939         .err_str = "Member exceeds struct_size",
 940 },
 941
 942 /* Test member exceeds the size of struct
 943  *
 944  * struct A {
 945  *     int m;
 946  *     int n[2];
 947  * };
 948  */
 949 {
 950         .descr = "size check test #2",
 951         .raw_types = {
 952                 /* int */                                       /* [1] */
 953                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, sizeof(int)),
 954                 /* int[2] */                                    /* [2] */
 955                 BTF_TYPE_ARRAY_ENC(1, 1, 2),
 956                 /* struct A { */                                /* [3] */
 957                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), sizeof(int) * 3 - 1),
 958                 BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int m; */
 959                 BTF_MEMBER_ENC(NAME_TBD, 2, 32),/* int n[2]; */
 960                 /* } */
 961                 BTF_END_RAW,
 962         },
 963         .str_sec = "\0A\0m\0n",
 964         .str_sec_size = sizeof("\0A\0m\0n"),
 965         .map_type = BPF_MAP_TYPE_ARRAY,
 966         .map_name = "size_check2_map",
 967         .key_size = sizeof(int),
 968         .value_size = 1,
 969         .key_type_id = 1,
 970         .value_type_id = 3,
 971         .max_entries = 4,
 972         .btf_load_err = true,
 973         .err_str = "Member exceeds struct_size",
 974 },
 975
 976 /* Test member exceeds the size of struct
 977  *
 978  * struct A {
 979  *     int m;
 980  *     void *n;
 981  * };
 982  */
 983 {
 984         .descr = "size check test #3",
 985         .raw_types = {
 986                 /* int */                                       /* [1] */
 987                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, sizeof(int)),
 988                 /* void* */                                     /* [2] */
 989                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 0),
 990                 /* struct A { */                                /* [3] */
 991                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), sizeof(int) + sizeof(void *) - 1),
 992                 BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int m; */
 993                 BTF_MEMBER_ENC(NAME_TBD, 2, 32),/* void *n; */
 994                 /* } */
 995                 BTF_END_RAW,
 996         },
 997         .str_sec = "\0A\0m\0n",
 998         .str_sec_size = sizeof("\0A\0m\0n"),
 999         .map_type = BPF_MAP_TYPE_ARRAY,
1000         .map_name = "size_check3_map",
1001         .key_size = sizeof(int),
1002         .value_size = 1,
1003         .key_type_id = 1,
1004         .value_type_id = 3,
1005         .max_entries = 4,
1006         .btf_load_err = true,
1007         .err_str = "Member exceeds struct_size",
1008 },
1009
1010 /* Test member exceeds the size of struct
1011  *
1012  * enum E {
1013  *     E0,
1014  *     E1,
1015  * };
1016  *
1017  * struct A {
1018  *     int m;
1019  *     enum E n;
1020  * };
1021  */
1022 {
1023         .descr = "size check test #4",
1024         .raw_types = {
1025                 /* int */                       /* [1] */
1026                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, sizeof(int)),
1027                 /* enum E { */                  /* [2] */
1028                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 2), sizeof(int)),
1029                 BTF_ENUM_ENC(NAME_TBD, 0),
1030                 BTF_ENUM_ENC(NAME_TBD, 1),
1031                 /* } */
1032                 /* struct A { */                /* [3] */
1033                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), sizeof(int) * 2 - 1),
1034                 BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int m; */
1035                 BTF_MEMBER_ENC(NAME_TBD, 2, 32),/* enum E n; */
1036                 /* } */
1037                 BTF_END_RAW,
1038         },
1039         .str_sec = "\0E\0E0\0E1\0A\0m\0n",
1040         .str_sec_size = sizeof("\0E\0E0\0E1\0A\0m\0n"),
1041         .map_type = BPF_MAP_TYPE_ARRAY,
1042         .map_name = "size_check4_map",
1043         .key_size = sizeof(int),
1044         .value_size = 1,
1045         .key_type_id = 1,
1046         .value_type_id = 3,
1047         .max_entries = 4,
1048         .btf_load_err = true,
1049         .err_str = "Member exceeds struct_size",
1050 },
1051
1052 /* Test member unexceeds the size of struct
1053  *
1054  * enum E {
1055  *     E0,
1056  *     E1,
1057  * };
1058  *
1059  * struct A {
1060  *     char m;
1061  *     enum E __attribute__((packed)) n;
1062  * };
1063  */
1064 {
1065         .descr = "size check test #5",
1066         .raw_types = {
1067                 /* int */                       /* [1] */
1068                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, sizeof(int)),
1069                 /* char */                      /* [2] */
1070                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 8, 1),
1071                 /* enum E { */                  /* [3] */
1072                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 2), 1),
1073                 BTF_ENUM_ENC(NAME_TBD, 0),
1074                 BTF_ENUM_ENC(NAME_TBD, 1),
1075                 /* } */
1076                 /* struct A { */                /* [4] */
1077                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), 2),
1078                 BTF_MEMBER_ENC(NAME_TBD, 2, 0), /* char m; */
1079                 BTF_MEMBER_ENC(NAME_TBD, 3, 8),/* enum E __attribute__((packed)) n; */
1080                 /* } */
1081                 BTF_END_RAW,
1082         },
1083         .str_sec = "\0E\0E0\0E1\0A\0m\0n",
1084         .str_sec_size = sizeof("\0E\0E0\0E1\0A\0m\0n"),
1085         .map_type = BPF_MAP_TYPE_ARRAY,
1086         .map_name = "size_check5_map",
1087         .key_size = sizeof(int),
1088         .value_size = 2,
1089         .key_type_id = 1,
1090         .value_type_id = 4,
1091         .max_entries = 4,
1092 },
1093
1094 /* typedef const void * const_void_ptr;
1095  * struct A {
1096  *      const_void_ptr m;
1097  * };
1098  */
1099 {
1100         .descr = "void test #1",
1101         .raw_types = {
1102                 /* int */               /* [1] */
1103                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1104                 /* const void */        /* [2] */
1105                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 0),
1106                 /* const void* */       /* [3] */
1107                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 2),
1108                 /* typedef const void * const_void_ptr */
1109                 BTF_TYPEDEF_ENC(NAME_TBD, 3),   /* [4] */
1110                 /* struct A { */        /* [5] */
1111                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), sizeof(void *)),
1112                 /* const_void_ptr m; */
1113                 BTF_MEMBER_ENC(NAME_TBD, 4, 0),
1114                 /* } */
1115                 BTF_END_RAW,
1116         },
1117         .str_sec = "\0const_void_ptr\0A\0m",
1118         .str_sec_size = sizeof("\0const_void_ptr\0A\0m"),
1119         .map_type = BPF_MAP_TYPE_ARRAY,
1120         .map_name = "void_test1_map",
1121         .key_size = sizeof(int),
1122         .value_size = sizeof(void *),
1123         .key_type_id = 1,
1124         .value_type_id = 4,
1125         .max_entries = 4,
1126 },
1127
1128 /* struct A {
1129  *     const void m;
1130  * };
1131  */
1132 {
1133         .descr = "void test #2",
1134         .raw_types = {
1135                 /* int */               /* [1] */
1136                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1137                 /* const void */        /* [2] */
1138                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 0),
1139                 /* struct A { */        /* [3] */
1140                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), 8),
1141                 /* const void m; */
1142                 BTF_MEMBER_ENC(NAME_TBD, 2, 0),
1143                 /* } */
1144                 BTF_END_RAW,
1145         },
1146         .str_sec = "\0A\0m",
1147         .str_sec_size = sizeof("\0A\0m"),
1148         .map_type = BPF_MAP_TYPE_ARRAY,
1149         .map_name = "void_test2_map",
1150         .key_size = sizeof(int),
1151         .value_size = sizeof(void *),
1152         .key_type_id = 1,
1153         .value_type_id = 3,
1154         .max_entries = 4,
1155         .btf_load_err = true,
1156         .err_str = "Invalid member",
1157 },
1158
1159 /* typedef const void * const_void_ptr;
1160  * const_void_ptr[4]
1161  */
1162 {
1163         .descr = "void test #3",
1164         .raw_types = {
1165                 /* int */               /* [1] */
1166                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1167                 /* const void */        /* [2] */
1168                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 0),
1169                 /* const void* */       /* [3] */
1170                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 2),
1171                 /* typedef const void * const_void_ptr */
1172                 BTF_TYPEDEF_ENC(NAME_TBD, 3),   /* [4] */
1173                 /* const_void_ptr[4] */
1174                 BTF_TYPE_ARRAY_ENC(4, 1, 4),    /* [5] */
1175                 BTF_END_RAW,
1176         },
1177         .str_sec = "\0const_void_ptr",
1178         .str_sec_size = sizeof("\0const_void_ptr"),
1179         .map_type = BPF_MAP_TYPE_ARRAY,
1180         .map_name = "void_test3_map",
1181         .key_size = sizeof(int),
1182         .value_size = sizeof(void *) * 4,
1183         .key_type_id = 1,
1184         .value_type_id = 5,
1185         .max_entries = 4,
1186 },
1187
1188 /* const void[4]  */
1189 {
1190         .descr = "void test #4",
1191         .raw_types = {
1192                 /* int */               /* [1] */
1193                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1194                 /* const void */        /* [2] */
1195                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 0),
1196                 /* const void[4] */     /* [3] */
1197                 BTF_TYPE_ARRAY_ENC(2, 1, 4),
1198                 BTF_END_RAW,
1199         },
1200         .str_sec = "\0A\0m",
1201         .str_sec_size = sizeof("\0A\0m"),
1202         .map_type = BPF_MAP_TYPE_ARRAY,
1203         .map_name = "void_test4_map",
1204         .key_size = sizeof(int),
1205         .value_size = sizeof(void *) * 4,
1206         .key_type_id = 1,
1207         .value_type_id = 3,
1208         .max_entries = 4,
1209         .btf_load_err = true,
1210         .err_str = "Invalid elem",
1211 },
1212
1213 /* Array_A  <------------------+
1214  *     elem_type == Array_B    |
1215  *                    |        |
1216  *                    |        |
1217  * Array_B  <-------- +        |
1218  *      elem_type == Array A --+
1219  */
1220 {
1221         .descr = "loop test #1",
1222         .raw_types = {
1223                 /* int */                       /* [1] */
1224                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1225                 /* Array_A */                   /* [2] */
1226                 BTF_TYPE_ARRAY_ENC(3, 1, 8),
1227                 /* Array_B */                   /* [3] */
1228                 BTF_TYPE_ARRAY_ENC(2, 1, 8),
1229                 BTF_END_RAW,
1230         },
1231         .str_sec = "",
1232         .str_sec_size = sizeof(""),
1233         .map_type = BPF_MAP_TYPE_ARRAY,
1234         .map_name = "loop_test1_map",
1235         .key_size = sizeof(int),
1236         .value_size = sizeof(sizeof(int) * 8),
1237         .key_type_id = 1,
1238         .value_type_id = 2,
1239         .max_entries = 4,
1240         .btf_load_err = true,
1241         .err_str = "Loop detected",
1242 },
1243
1244 /* typedef is _before_ the BTF type of Array_A and Array_B
1245  *
1246  * typedef Array_B int_array;
1247  *
1248  * Array_A  <------------------+
1249  *     elem_type == int_array  |
1250  *                    |        |
1251  *                    |        |
1252  * Array_B  <-------- +        |
1253  *      elem_type == Array_A --+
1254  */
1255 {
1256         .descr = "loop test #2",
1257         .raw_types = {
1258                 /* int */
1259                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
1260                 /* typedef Array_B int_array */
1261                 BTF_TYPEDEF_ENC(1, 4),                          /* [2] */
1262                 /* Array_A */
1263                 BTF_TYPE_ARRAY_ENC(2, 1, 8),                    /* [3] */
1264                 /* Array_B */
1265                 BTF_TYPE_ARRAY_ENC(3, 1, 8),                    /* [4] */
1266                 BTF_END_RAW,
1267         },
1268         .str_sec = "\0int_array\0",
1269         .str_sec_size = sizeof("\0int_array"),
1270         .map_type = BPF_MAP_TYPE_ARRAY,
1271         .map_name = "loop_test2_map",
1272         .key_size = sizeof(int),
1273         .value_size = sizeof(sizeof(int) * 8),
1274         .key_type_id = 1,
1275         .value_type_id = 2,
1276         .max_entries = 4,
1277         .btf_load_err = true,
1278         .err_str = "Loop detected",
1279 },
1280
1281 /* Array_A  <------------------+
1282  *     elem_type == Array_B    |
1283  *                    |        |
1284  *                    |        |
1285  * Array_B  <-------- +        |
1286  *      elem_type == Array_A --+
1287  */
1288 {
1289         .descr = "loop test #3",
1290         .raw_types = {
1291                 /* int */                               /* [1] */
1292                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1293                 /* Array_A */                           /* [2] */
1294                 BTF_TYPE_ARRAY_ENC(3, 1, 8),
1295                 /* Array_B */                           /* [3] */
1296                 BTF_TYPE_ARRAY_ENC(2, 1, 8),
1297                 BTF_END_RAW,
1298         },
1299         .str_sec = "",
1300         .str_sec_size = sizeof(""),
1301         .map_type = BPF_MAP_TYPE_ARRAY,
1302         .map_name = "loop_test3_map",
1303         .key_size = sizeof(int),
1304         .value_size = sizeof(sizeof(int) * 8),
1305         .key_type_id = 1,
1306         .value_type_id = 2,
1307         .max_entries = 4,
1308         .btf_load_err = true,
1309         .err_str = "Loop detected",
1310 },
1311
1312 /* typedef is _between_ the BTF type of Array_A and Array_B
1313  *
1314  * typedef Array_B int_array;
1315  *
1316  * Array_A  <------------------+
1317  *     elem_type == int_array  |
1318  *                    |        |
1319  *                    |        |
1320  * Array_B  <-------- +        |
1321  *      elem_type == Array_A --+
1322  */
1323 {
1324         .descr = "loop test #4",
1325         .raw_types = {
1326                 /* int */                               /* [1] */
1327                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1328                 /* Array_A */                           /* [2] */
1329                 BTF_TYPE_ARRAY_ENC(3, 1, 8),
1330                 /* typedef Array_B int_array */         /* [3] */
1331                 BTF_TYPEDEF_ENC(NAME_TBD, 4),
1332                 /* Array_B */                           /* [4] */
1333                 BTF_TYPE_ARRAY_ENC(2, 1, 8),
1334                 BTF_END_RAW,
1335         },
1336         .str_sec = "\0int_array\0",
1337         .str_sec_size = sizeof("\0int_array"),
1338         .map_type = BPF_MAP_TYPE_ARRAY,
1339         .map_name = "loop_test4_map",
1340         .key_size = sizeof(int),
1341         .value_size = sizeof(sizeof(int) * 8),
1342         .key_type_id = 1,
1343         .value_type_id = 2,
1344         .max_entries = 4,
1345         .btf_load_err = true,
1346         .err_str = "Loop detected",
1347 },
1348
1349 /* typedef struct B Struct_B
1350  *
1351  * struct A {
1352  *     int x;
1353  *     Struct_B y;
1354  * };
1355  *
1356  * struct B {
1357  *     int x;
1358  *     struct A y;
1359  * };
1360  */
1361 {
1362         .descr = "loop test #5",
1363         .raw_types = {
1364                 /* int */
1365                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
1366                 /* struct A */                                  /* [2] */
1367                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), 8),
1368                 BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int x;       */
1369                 BTF_MEMBER_ENC(NAME_TBD, 3, 32),/* Struct_B y;  */
1370                 /* typedef struct B Struct_B */
1371                 BTF_TYPEDEF_ENC(NAME_TBD, 4),                   /* [3] */
1372                 /* struct B */                                  /* [4] */
1373                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), 8),
1374                 BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int x;       */
1375                 BTF_MEMBER_ENC(NAME_TBD, 2, 32),/* struct A y;  */
1376                 BTF_END_RAW,
1377         },
1378         .str_sec = "\0A\0x\0y\0Struct_B\0B\0x\0y",
1379         .str_sec_size = sizeof("\0A\0x\0y\0Struct_B\0B\0x\0y"),
1380         .map_type = BPF_MAP_TYPE_ARRAY,
1381         .map_name = "loop_test5_map",
1382         .key_size = sizeof(int),
1383         .value_size = 8,
1384         .key_type_id = 1,
1385         .value_type_id = 2,
1386         .max_entries = 4,
1387         .btf_load_err = true,
1388         .err_str = "Loop detected",
1389 },
1390
1391 /* struct A {
1392  *     int x;
1393  *     struct A array_a[4];
1394  * };
1395  */
1396 {
1397         .descr = "loop test #6",
1398         .raw_types = {
1399                 /* int */
1400                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
1401                 BTF_TYPE_ARRAY_ENC(3, 1, 4),                    /* [2] */
1402                 /* struct A */                                  /* [3] */
1403                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 2), 8),
1404                 BTF_MEMBER_ENC(NAME_TBD, 1, 0), /* int x;               */
1405                 BTF_MEMBER_ENC(NAME_TBD, 2, 32),/* struct A array_a[4]; */
1406                 BTF_END_RAW,
1407         },
1408         .str_sec = "\0A\0x\0y",
1409         .str_sec_size = sizeof("\0A\0x\0y"),
1410         .map_type = BPF_MAP_TYPE_ARRAY,
1411         .map_name = "loop_test6_map",
1412         .key_size = sizeof(int),
1413         .value_size = 8,
1414         .key_type_id = 1,
1415         .value_type_id = 2,
1416         .max_entries = 4,
1417         .btf_load_err = true,
1418         .err_str = "Loop detected",
1419 },
1420
1421 {
1422         .descr = "loop test #7",
1423         .raw_types = {
1424                 /* int */                               /* [1] */
1425                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1426                 /* struct A { */                        /* [2] */
1427                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), sizeof(void *)),
1428                 /*     const void *m;   */
1429                 BTF_MEMBER_ENC(NAME_TBD, 3, 0),
1430                 /* CONST type_id=3      */              /* [3] */
1431                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 4),
1432                 /* PTR type_id=2        */              /* [4] */
1433                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 3),
1434                 BTF_END_RAW,
1435         },
1436         .str_sec = "\0A\0m",
1437         .str_sec_size = sizeof("\0A\0m"),
1438         .map_type = BPF_MAP_TYPE_ARRAY,
1439         .map_name = "loop_test7_map",
1440         .key_size = sizeof(int),
1441         .value_size = sizeof(void *),
1442         .key_type_id = 1,
1443         .value_type_id = 2,
1444         .max_entries = 4,
1445         .btf_load_err = true,
1446         .err_str = "Loop detected",
1447 },
1448
1449 {
1450         .descr = "loop test #8",
1451         .raw_types = {
1452                 /* int */                               /* [1] */
1453                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1454                 /* struct A { */                        /* [2] */
1455                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), sizeof(void *)),
1456                 /*     const void *m;   */
1457                 BTF_MEMBER_ENC(NAME_TBD, 4, 0),
1458                 /* struct B { */                        /* [3] */
1459                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), sizeof(void *)),
1460                 /*     const void *n;   */
1461                 BTF_MEMBER_ENC(NAME_TBD, 6, 0),
1462                 /* CONST type_id=5      */              /* [4] */
1463                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 5),
1464                 /* PTR type_id=6        */              /* [5] */
1465                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 6),
1466                 /* CONST type_id=7      */              /* [6] */
1467                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 7),
1468                 /* PTR type_id=4        */              /* [7] */
1469                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 4),
1470                 BTF_END_RAW,
1471         },
1472         .str_sec = "\0A\0m\0B\0n",
1473         .str_sec_size = sizeof("\0A\0m\0B\0n"),
1474         .map_type = BPF_MAP_TYPE_ARRAY,
1475         .map_name = "loop_test8_map",
1476         .key_size = sizeof(int),
1477         .value_size = sizeof(void *),
1478         .key_type_id = 1,
1479         .value_type_id = 2,
1480         .max_entries = 4,
1481         .btf_load_err = true,
1482         .err_str = "Loop detected",
1483 },
1484
1485 {
1486         .descr = "string section does not end with null",
1487         .raw_types = {
1488                 /* int */                               /* [1] */
1489                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
1490                 BTF_END_RAW,
1491         },
1492         .str_sec = "\0int",
1493         .str_sec_size = sizeof("\0int") - 1,
1494         .map_type = BPF_MAP_TYPE_ARRAY,
1495         .map_name = "hdr_test_map",
1496         .key_size = sizeof(int),
1497         .value_size = sizeof(int),
1498         .key_type_id = 1,
1499         .value_type_id = 1,
1500         .max_entries = 4,
1501         .btf_load_err = true,
1502         .err_str = "Invalid string section",
1503 },
1504
1505 {
1506         .descr = "empty string section",
1507         .raw_types = {
1508                 /* int */                               /* [1] */
1509                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1510                 BTF_END_RAW,
1511         },
1512         .str_sec = "",
1513         .str_sec_size = 0,
1514         .map_type = BPF_MAP_TYPE_ARRAY,
1515         .map_name = "hdr_test_map",
1516         .key_size = sizeof(int),
1517         .value_size = sizeof(int),
1518         .key_type_id = 1,
1519         .value_type_id = 1,
1520         .max_entries = 4,
1521         .btf_load_err = true,
1522         .err_str = "Invalid string section",
1523 },
1524
1525 {
1526         .descr = "empty type section",
1527         .raw_types = {
1528                 BTF_END_RAW,
1529         },
1530         .str_sec = "\0int",
1531         .str_sec_size = sizeof("\0int"),
1532         .map_type = BPF_MAP_TYPE_ARRAY,
1533         .map_name = "hdr_test_map",
1534         .key_size = sizeof(int),
1535         .value_size = sizeof(int),
1536         .key_type_id = 1,
1537         .value_type_id = 1,
1538         .max_entries = 4,
1539         .btf_load_err = true,
1540         .err_str = "No type found",
1541 },
1542
1543 {
1544         .descr = "btf_header test. Longer hdr_len",
1545         .raw_types = {
1546                 /* int */                               /* [1] */
1547                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
1548                 BTF_END_RAW,
1549         },
1550         .str_sec = "\0int",
1551         .str_sec_size = sizeof("\0int"),
1552         .map_type = BPF_MAP_TYPE_ARRAY,
1553         .map_name = "hdr_test_map",
1554         .key_size = sizeof(int),
1555         .value_size = sizeof(int),
1556         .key_type_id = 1,
1557         .value_type_id = 1,
1558         .max_entries = 4,
1559         .btf_load_err = true,
1560         .hdr_len_delta = 4,
1561         .err_str = "Unsupported btf_header",
1562 },
1563
1564 {
1565         .descr = "btf_header test. Gap between hdr and type",
1566         .raw_types = {
1567                 /* int */                               /* [1] */
1568                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
1569                 BTF_END_RAW,
1570         },
1571         .str_sec = "\0int",
1572         .str_sec_size = sizeof("\0int"),
1573         .map_type = BPF_MAP_TYPE_ARRAY,
1574         .map_name = "hdr_test_map",
1575         .key_size = sizeof(int),
1576         .value_size = sizeof(int),
1577         .key_type_id = 1,
1578         .value_type_id = 1,
1579         .max_entries = 4,
1580         .btf_load_err = true,
1581         .type_off_delta = 4,
1582         .err_str = "Unsupported section found",
1583 },
1584
1585 {
1586         .descr = "btf_header test. Gap between type and str",
1587         .raw_types = {
1588                 /* int */                               /* [1] */
1589                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
1590                 BTF_END_RAW,
1591         },
1592         .str_sec = "\0int",
1593         .str_sec_size = sizeof("\0int"),
1594         .map_type = BPF_MAP_TYPE_ARRAY,
1595         .map_name = "hdr_test_map",
1596         .key_size = sizeof(int),
1597         .value_size = sizeof(int),
1598         .key_type_id = 1,
1599         .value_type_id = 1,
1600         .max_entries = 4,
1601         .btf_load_err = true,
1602         .str_off_delta = 4,
1603         .err_str = "Unsupported section found",
1604 },
1605
1606 {
1607         .descr = "btf_header test. Overlap between type and str",
1608         .raw_types = {
1609                 /* int */                               /* [1] */
1610                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
1611                 BTF_END_RAW,
1612         },
1613         .str_sec = "\0int",
1614         .str_sec_size = sizeof("\0int"),
1615         .map_type = BPF_MAP_TYPE_ARRAY,
1616         .map_name = "hdr_test_map",
1617         .key_size = sizeof(int),
1618         .value_size = sizeof(int),
1619         .key_type_id = 1,
1620         .value_type_id = 1,
1621         .max_entries = 4,
1622         .btf_load_err = true,
1623         .str_off_delta = -4,
1624         .err_str = "Section overlap found",
1625 },
1626
1627 {
1628         .descr = "btf_header test. Larger BTF size",
1629         .raw_types = {
1630                 /* int */                               /* [1] */
1631                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
1632                 BTF_END_RAW,
1633         },
1634         .str_sec = "\0int",
1635         .str_sec_size = sizeof("\0int"),
1636         .map_type = BPF_MAP_TYPE_ARRAY,
1637         .map_name = "hdr_test_map",
1638         .key_size = sizeof(int),
1639         .value_size = sizeof(int),
1640         .key_type_id = 1,
1641         .value_type_id = 1,
1642         .max_entries = 4,
1643         .btf_load_err = true,
1644         .str_len_delta = -4,
1645         .err_str = "Unsupported section found",
1646 },
1647
1648 {
1649         .descr = "btf_header test. Smaller BTF size",
1650         .raw_types = {
1651                 /* int */                               /* [1] */
1652                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
1653                 BTF_END_RAW,
1654         },
1655         .str_sec = "\0int",
1656         .str_sec_size = sizeof("\0int"),
1657         .map_type = BPF_MAP_TYPE_ARRAY,
1658         .map_name = "hdr_test_map",
1659         .key_size = sizeof(int),
1660         .value_size = sizeof(int),
1661         .key_type_id = 1,
1662         .value_type_id = 1,
1663         .max_entries = 4,
1664         .btf_load_err = true,
1665         .str_len_delta = 4,
1666         .err_str = "Total section length too long",
1667 },
1668
1669 {
1670         .descr = "array test. index_type/elem_type \"int\"",
1671         .raw_types = {
1672                 /* int */                               /* [1] */
1673                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1674                 /* int[16] */                           /* [2] */
1675                 BTF_TYPE_ARRAY_ENC(1, 1, 16),
1676                 BTF_END_RAW,
1677         },
1678         .str_sec = "",
1679         .str_sec_size = sizeof(""),
1680         .map_type = BPF_MAP_TYPE_ARRAY,
1681         .map_name = "array_test_map",
1682         .key_size = sizeof(int),
1683         .value_size = sizeof(int),
1684         .key_type_id = 1,
1685         .value_type_id = 1,
1686         .max_entries = 4,
1687 },
1688
1689 {
1690         .descr = "array test. index_type/elem_type \"const int\"",
1691         .raw_types = {
1692                 /* int */                               /* [1] */
1693                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1694                 /* int[16] */                           /* [2] */
1695                 BTF_TYPE_ARRAY_ENC(3, 3, 16),
1696                 /* CONST type_id=1 */                   /* [3] */
1697                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 1),
1698                 BTF_END_RAW,
1699         },
1700         .str_sec = "",
1701         .str_sec_size = sizeof(""),
1702         .map_type = BPF_MAP_TYPE_ARRAY,
1703         .map_name = "array_test_map",
1704         .key_size = sizeof(int),
1705         .value_size = sizeof(int),
1706         .key_type_id = 1,
1707         .value_type_id = 1,
1708         .max_entries = 4,
1709 },
1710
1711 {
1712         .descr = "array test. index_type \"const int:31\"",
1713         .raw_types = {
1714                 /* int */                               /* [1] */
1715                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1716                 /* int:31 */                            /* [2] */
1717                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 31, 4),
1718                 /* int[16] */                           /* [3] */
1719                 BTF_TYPE_ARRAY_ENC(1, 4, 16),
1720                 /* CONST type_id=2 */                   /* [4] */
1721                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 2),
1722                 BTF_END_RAW,
1723         },
1724         .str_sec = "",
1725         .str_sec_size = sizeof(""),
1726         .map_type = BPF_MAP_TYPE_ARRAY,
1727         .map_name = "array_test_map",
1728         .key_size = sizeof(int),
1729         .value_size = sizeof(int),
1730         .key_type_id = 1,
1731         .value_type_id = 1,
1732         .max_entries = 4,
1733         .btf_load_err = true,
1734         .err_str = "Invalid index",
1735 },
1736
1737 {
1738         .descr = "array test. elem_type \"const int:31\"",
1739         .raw_types = {
1740                 /* int */                               /* [1] */
1741                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1742                 /* int:31 */                            /* [2] */
1743                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 31, 4),
1744                 /* int[16] */                           /* [3] */
1745                 BTF_TYPE_ARRAY_ENC(4, 1, 16),
1746                 /* CONST type_id=2 */                   /* [4] */
1747                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 2),
1748                 BTF_END_RAW,
1749         },
1750         .str_sec = "",
1751         .str_sec_size = sizeof(""),
1752         .map_type = BPF_MAP_TYPE_ARRAY,
1753         .map_name = "array_test_map",
1754         .key_size = sizeof(int),
1755         .value_size = sizeof(int),
1756         .key_type_id = 1,
1757         .value_type_id = 1,
1758         .max_entries = 4,
1759         .btf_load_err = true,
1760         .err_str = "Invalid array of int",
1761 },
1762
1763 {
1764         .descr = "array test. index_type \"void\"",
1765         .raw_types = {
1766                 /* int */                               /* [1] */
1767                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1768                 /* int[16] */                           /* [2] */
1769                 BTF_TYPE_ARRAY_ENC(1, 0, 16),
1770                 BTF_END_RAW,
1771         },
1772         .str_sec = "",
1773         .str_sec_size = sizeof(""),
1774         .map_type = BPF_MAP_TYPE_ARRAY,
1775         .map_name = "array_test_map",
1776         .key_size = sizeof(int),
1777         .value_size = sizeof(int),
1778         .key_type_id = 1,
1779         .value_type_id = 1,
1780         .max_entries = 4,
1781         .btf_load_err = true,
1782         .err_str = "Invalid index",
1783 },
1784
1785 {
1786         .descr = "array test. index_type \"const void\"",
1787         .raw_types = {
1788                 /* int */                               /* [1] */
1789                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1790                 /* int[16] */                           /* [2] */
1791                 BTF_TYPE_ARRAY_ENC(1, 3, 16),
1792                 /* CONST type_id=0 (void) */            /* [3] */
1793                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 0),
1794                 BTF_END_RAW,
1795         },
1796         .str_sec = "",
1797         .str_sec_size = sizeof(""),
1798         .map_type = BPF_MAP_TYPE_ARRAY,
1799         .map_name = "array_test_map",
1800         .key_size = sizeof(int),
1801         .value_size = sizeof(int),
1802         .key_type_id = 1,
1803         .value_type_id = 1,
1804         .max_entries = 4,
1805         .btf_load_err = true,
1806         .err_str = "Invalid index",
1807 },
1808
1809 {
1810         .descr = "array test. elem_type \"const void\"",
1811         .raw_types = {
1812                 /* int */                               /* [1] */
1813                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1814                 /* int[16] */                           /* [2] */
1815                 BTF_TYPE_ARRAY_ENC(3, 1, 16),
1816                 /* CONST type_id=0 (void) */            /* [3] */
1817                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 0),
1818                 BTF_END_RAW,
1819         },
1820         .str_sec = "",
1821         .str_sec_size = sizeof(""),
1822         .map_type = BPF_MAP_TYPE_ARRAY,
1823         .map_name = "array_test_map",
1824         .key_size = sizeof(int),
1825         .value_size = sizeof(int),
1826         .key_type_id = 1,
1827         .value_type_id = 1,
1828         .max_entries = 4,
1829         .btf_load_err = true,
1830         .err_str = "Invalid elem",
1831 },
1832
1833 {
1834         .descr = "array test. elem_type \"const void *\"",
1835         .raw_types = {
1836                 /* int */                               /* [1] */
1837                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1838                 /* const void *[16] */                  /* [2] */
1839                 BTF_TYPE_ARRAY_ENC(3, 1, 16),
1840                 /* CONST type_id=4 */                   /* [3] */
1841                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 4),
1842                 /* void* */                             /* [4] */
1843                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 0),
1844                 BTF_END_RAW,
1845         },
1846         .str_sec = "",
1847         .str_sec_size = sizeof(""),
1848         .map_type = BPF_MAP_TYPE_ARRAY,
1849         .map_name = "array_test_map",
1850         .key_size = sizeof(int),
1851         .value_size = sizeof(int),
1852         .key_type_id = 1,
1853         .value_type_id = 1,
1854         .max_entries = 4,
1855 },
1856
1857 {
1858         .descr = "array test. index_type \"const void *\"",
1859         .raw_types = {
1860                 /* int */                               /* [1] */
1861                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1862                 /* const void *[16] */                  /* [2] */
1863                 BTF_TYPE_ARRAY_ENC(3, 3, 16),
1864                 /* CONST type_id=4 */                   /* [3] */
1865                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 4),
1866                 /* void* */                             /* [4] */
1867                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 0),
1868                 BTF_END_RAW,
1869         },
1870         .str_sec = "",
1871         .str_sec_size = sizeof(""),
1872         .map_type = BPF_MAP_TYPE_ARRAY,
1873         .map_name = "array_test_map",
1874         .key_size = sizeof(int),
1875         .value_size = sizeof(int),
1876         .key_type_id = 1,
1877         .value_type_id = 1,
1878         .max_entries = 4,
1879         .btf_load_err = true,
1880         .err_str = "Invalid index",
1881 },
1882
1883 {
1884         .descr = "array test. t->size != 0\"",
1885         .raw_types = {
1886                 /* int */                               /* [1] */
1887                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1888                 /* int[16] */                           /* [2] */
1889                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ARRAY, 0, 0), 1),
1890                 BTF_ARRAY_ENC(1, 1, 16),
1891                 BTF_END_RAW,
1892         },
1893         .str_sec = "",
1894         .str_sec_size = sizeof(""),
1895         .map_type = BPF_MAP_TYPE_ARRAY,
1896         .map_name = "array_test_map",
1897         .key_size = sizeof(int),
1898         .value_size = sizeof(int),
1899         .key_type_id = 1,
1900         .value_type_id = 1,
1901         .max_entries = 4,
1902         .btf_load_err = true,
1903         .err_str = "size != 0",
1904 },
1905
1906 {
1907         .descr = "int test. invalid int_data",
1908         .raw_types = {
1909                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_INT, 0, 0), 4),
1910                 0x10000000,
1911                 BTF_END_RAW,
1912         },
1913         .str_sec = "",
1914         .str_sec_size = sizeof(""),
1915         .map_type = BPF_MAP_TYPE_ARRAY,
1916         .map_name = "array_test_map",
1917         .key_size = sizeof(int),
1918         .value_size = sizeof(int),
1919         .key_type_id = 1,
1920         .value_type_id = 1,
1921         .max_entries = 4,
1922         .btf_load_err = true,
1923         .err_str = "Invalid int_data",
1924 },
1925
1926 {
1927         .descr = "invalid BTF_INFO",
1928         .raw_types = {
1929                 /* int */                               /* [1] */
1930                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1931                 BTF_TYPE_ENC(0, 0x20000000, 4),
1932                 BTF_END_RAW,
1933         },
1934         .str_sec = "",
1935         .str_sec_size = sizeof(""),
1936         .map_type = BPF_MAP_TYPE_ARRAY,
1937         .map_name = "array_test_map",
1938         .key_size = sizeof(int),
1939         .value_size = sizeof(int),
1940         .key_type_id = 1,
1941         .value_type_id = 1,
1942         .max_entries = 4,
1943         .btf_load_err = true,
1944         .err_str = "Invalid btf_info",
1945 },
1946
1947 {
1948         .descr = "fwd test. t->type != 0\"",
1949         .raw_types = {
1950                 /* int */                               /* [1] */
1951                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
1952                 /* fwd type */                          /* [2] */
1953                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_FWD, 0, 0), 1),
1954                 BTF_END_RAW,
1955         },
1956         .str_sec = "",
1957         .str_sec_size = sizeof(""),
1958         .map_type = BPF_MAP_TYPE_ARRAY,
1959         .map_name = "fwd_test_map",
1960         .key_size = sizeof(int),
1961         .value_size = sizeof(int),
1962         .key_type_id = 1,
1963         .value_type_id = 1,
1964         .max_entries = 4,
1965         .btf_load_err = true,
1966         .err_str = "type != 0",
1967 },
1968
1969 {
1970         .descr = "typedef (invalid name, name_off = 0)",
1971         .raw_types = {
1972                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
1973                 BTF_TYPEDEF_ENC(0, 1),                          /* [2] */
1974                 BTF_END_RAW,
1975         },
1976         .str_sec = "\0__int",
1977         .str_sec_size = sizeof("\0__int"),
1978         .map_type = BPF_MAP_TYPE_ARRAY,
1979         .map_name = "typedef_check_btf",
1980         .key_size = sizeof(int),
1981         .value_size = sizeof(int),
1982         .key_type_id = 1,
1983         .value_type_id = 1,
1984         .max_entries = 4,
1985         .btf_load_err = true,
1986         .err_str = "Invalid name",
1987 },
1988
1989 {
1990         .descr = "typedef (invalid name, invalid identifier)",
1991         .raw_types = {
1992                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
1993                 BTF_TYPEDEF_ENC(NAME_TBD, 1),                   /* [2] */
1994                 BTF_END_RAW,
1995         },
1996         .str_sec = "\0__!int",
1997         .str_sec_size = sizeof("\0__!int"),
1998         .map_type = BPF_MAP_TYPE_ARRAY,
1999         .map_name = "typedef_check_btf",
2000         .key_size = sizeof(int),
2001         .value_size = sizeof(int),
2002         .key_type_id = 1,
2003         .value_type_id = 1,
2004         .max_entries = 4,
2005         .btf_load_err = true,
2006         .err_str = "Invalid name",
2007 },
2008
2009 {
2010         .descr = "ptr type (invalid name, name_off <> 0)",
2011         .raw_types = {
2012                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2013                 BTF_TYPE_ENC(NAME_TBD,
2014                              BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 1),      /* [2] */
2015                 BTF_END_RAW,
2016         },
2017         .str_sec = "\0__int",
2018         .str_sec_size = sizeof("\0__int"),
2019         .map_type = BPF_MAP_TYPE_ARRAY,
2020         .map_name = "ptr_type_check_btf",
2021         .key_size = sizeof(int),
2022         .value_size = sizeof(int),
2023         .key_type_id = 1,
2024         .value_type_id = 1,
2025         .max_entries = 4,
2026         .btf_load_err = true,
2027         .err_str = "Invalid name",
2028 },
2029
2030 {
2031         .descr = "volatile type (invalid name, name_off <> 0)",
2032         .raw_types = {
2033                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2034                 BTF_TYPE_ENC(NAME_TBD,
2035                              BTF_INFO_ENC(BTF_KIND_VOLATILE, 0, 0), 1), /* [2] */
2036                 BTF_END_RAW,
2037         },
2038         .str_sec = "\0__int",
2039         .str_sec_size = sizeof("\0__int"),
2040         .map_type = BPF_MAP_TYPE_ARRAY,
2041         .map_name = "volatile_type_check_btf",
2042         .key_size = sizeof(int),
2043         .value_size = sizeof(int),
2044         .key_type_id = 1,
2045         .value_type_id = 1,
2046         .max_entries = 4,
2047         .btf_load_err = true,
2048         .err_str = "Invalid name",
2049 },
2050
2051 {
2052         .descr = "const type (invalid name, name_off <> 0)",
2053         .raw_types = {
2054                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2055                 BTF_TYPE_ENC(NAME_TBD,
2056                              BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 1),    /* [2] */
2057                 BTF_END_RAW,
2058         },
2059         .str_sec = "\0__int",
2060         .str_sec_size = sizeof("\0__int"),
2061         .map_type = BPF_MAP_TYPE_ARRAY,
2062         .map_name = "const_type_check_btf",
2063         .key_size = sizeof(int),
2064         .value_size = sizeof(int),
2065         .key_type_id = 1,
2066         .value_type_id = 1,
2067         .max_entries = 4,
2068         .btf_load_err = true,
2069         .err_str = "Invalid name",
2070 },
2071
2072 {
2073         .descr = "restrict type (invalid name, name_off <> 0)",
2074         .raw_types = {
2075                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2076                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 1),   /* [2] */
2077                 BTF_TYPE_ENC(NAME_TBD,
2078                              BTF_INFO_ENC(BTF_KIND_RESTRICT, 0, 0), 2), /* [3] */
2079                 BTF_END_RAW,
2080         },
2081         .str_sec = "\0__int",
2082         .str_sec_size = sizeof("\0__int"),
2083         .map_type = BPF_MAP_TYPE_ARRAY,
2084         .map_name = "restrict_type_check_btf",
2085         .key_size = sizeof(int),
2086         .value_size = sizeof(int),
2087         .key_type_id = 1,
2088         .value_type_id = 1,
2089         .max_entries = 4,
2090         .btf_load_err = true,
2091         .err_str = "Invalid name",
2092 },
2093
2094 {
2095         .descr = "fwd type (invalid name, name_off = 0)",
2096         .raw_types = {
2097                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2098                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_FWD, 0, 0), 0),   /* [2] */
2099                 BTF_END_RAW,
2100         },
2101         .str_sec = "\0__skb",
2102         .str_sec_size = sizeof("\0__skb"),
2103         .map_type = BPF_MAP_TYPE_ARRAY,
2104         .map_name = "fwd_type_check_btf",
2105         .key_size = sizeof(int),
2106         .value_size = sizeof(int),
2107         .key_type_id = 1,
2108         .value_type_id = 1,
2109         .max_entries = 4,
2110         .btf_load_err = true,
2111         .err_str = "Invalid name",
2112 },
2113
2114 {
2115         .descr = "fwd type (invalid name, invalid identifier)",
2116         .raw_types = {
2117                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2118                 BTF_TYPE_ENC(NAME_TBD,
2119                              BTF_INFO_ENC(BTF_KIND_FWD, 0, 0), 0),      /* [2] */
2120                 BTF_END_RAW,
2121         },
2122         .str_sec = "\0__!skb",
2123         .str_sec_size = sizeof("\0__!skb"),
2124         .map_type = BPF_MAP_TYPE_ARRAY,
2125         .map_name = "fwd_type_check_btf",
2126         .key_size = sizeof(int),
2127         .value_size = sizeof(int),
2128         .key_type_id = 1,
2129         .value_type_id = 1,
2130         .max_entries = 4,
2131         .btf_load_err = true,
2132         .err_str = "Invalid name",
2133 },
2134
2135 {
2136         .descr = "array type (invalid name, name_off <> 0)",
2137         .raw_types = {
2138                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2139                 BTF_TYPE_ENC(NAME_TBD,
2140                              BTF_INFO_ENC(BTF_KIND_ARRAY, 0, 0), 0),    /* [2] */
2141                 BTF_ARRAY_ENC(1, 1, 4),
2142                 BTF_END_RAW,
2143         },
2144         .str_sec = "\0__skb",
2145         .str_sec_size = sizeof("\0__skb"),
2146         .map_type = BPF_MAP_TYPE_ARRAY,
2147         .map_name = "array_type_check_btf",
2148         .key_size = sizeof(int),
2149         .value_size = sizeof(int),
2150         .key_type_id = 1,
2151         .value_type_id = 1,
2152         .max_entries = 4,
2153         .btf_load_err = true,
2154         .err_str = "Invalid name",
2155 },
2156
2157 {
2158         .descr = "struct type (name_off = 0)",
2159         .raw_types = {
2160                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2161                 BTF_TYPE_ENC(0,
2162                              BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), 4),   /* [2] */
2163                 BTF_MEMBER_ENC(NAME_TBD, 1, 0),
2164                 BTF_END_RAW,
2165         },
2166         .str_sec = "\0A",
2167         .str_sec_size = sizeof("\0A"),
2168         .map_type = BPF_MAP_TYPE_ARRAY,
2169         .map_name = "struct_type_check_btf",
2170         .key_size = sizeof(int),
2171         .value_size = sizeof(int),
2172         .key_type_id = 1,
2173         .value_type_id = 1,
2174         .max_entries = 4,
2175 },
2176
2177 {
2178         .descr = "struct type (invalid name, invalid identifier)",
2179         .raw_types = {
2180                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2181                 BTF_TYPE_ENC(NAME_TBD,
2182                              BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), 4),   /* [2] */
2183                 BTF_MEMBER_ENC(NAME_TBD, 1, 0),
2184                 BTF_END_RAW,
2185         },
2186         .str_sec = "\0A!\0B",
2187         .str_sec_size = sizeof("\0A!\0B"),
2188         .map_type = BPF_MAP_TYPE_ARRAY,
2189         .map_name = "struct_type_check_btf",
2190         .key_size = sizeof(int),
2191         .value_size = sizeof(int),
2192         .key_type_id = 1,
2193         .value_type_id = 1,
2194         .max_entries = 4,
2195         .btf_load_err = true,
2196         .err_str = "Invalid name",
2197 },
2198
2199 {
2200         .descr = "struct member (name_off = 0)",
2201         .raw_types = {
2202                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2203                 BTF_TYPE_ENC(0,
2204                              BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), 4),   /* [2] */
2205                 BTF_MEMBER_ENC(NAME_TBD, 1, 0),
2206                 BTF_END_RAW,
2207         },
2208         .str_sec = "\0A",
2209         .str_sec_size = sizeof("\0A"),
2210         .map_type = BPF_MAP_TYPE_ARRAY,
2211         .map_name = "struct_type_check_btf",
2212         .key_size = sizeof(int),
2213         .value_size = sizeof(int),
2214         .key_type_id = 1,
2215         .value_type_id = 1,
2216         .max_entries = 4,
2217 },
2218
2219 {
2220         .descr = "struct member (invalid name, invalid identifier)",
2221         .raw_types = {
2222                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2223                 BTF_TYPE_ENC(NAME_TBD,
2224                              BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), 4),   /* [2] */
2225                 BTF_MEMBER_ENC(NAME_TBD, 1, 0),
2226                 BTF_END_RAW,
2227         },
2228         .str_sec = "\0A\0B*",
2229         .str_sec_size = sizeof("\0A\0B*"),
2230         .map_type = BPF_MAP_TYPE_ARRAY,
2231         .map_name = "struct_type_check_btf",
2232         .key_size = sizeof(int),
2233         .value_size = sizeof(int),
2234         .key_type_id = 1,
2235         .value_type_id = 1,
2236         .max_entries = 4,
2237         .btf_load_err = true,
2238         .err_str = "Invalid name",
2239 },
2240
2241 {
2242         .descr = "enum type (name_off = 0)",
2243         .raw_types = {
2244                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2245                 BTF_TYPE_ENC(0,
2246                              BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1),
2247                              sizeof(int)),                              /* [2] */
2248                 BTF_ENUM_ENC(NAME_TBD, 0),
2249                 BTF_END_RAW,
2250         },
2251         .str_sec = "\0A\0B",
2252         .str_sec_size = sizeof("\0A\0B"),
2253         .map_type = BPF_MAP_TYPE_ARRAY,
2254         .map_name = "enum_type_check_btf",
2255         .key_size = sizeof(int),
2256         .value_size = sizeof(int),
2257         .key_type_id = 1,
2258         .value_type_id = 1,
2259         .max_entries = 4,
2260 },
2261
2262 {
2263         .descr = "enum type (invalid name, invalid identifier)",
2264         .raw_types = {
2265                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2266                 BTF_TYPE_ENC(NAME_TBD,
2267                              BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1),
2268                              sizeof(int)),                              /* [2] */
2269                 BTF_ENUM_ENC(NAME_TBD, 0),
2270                 BTF_END_RAW,
2271         },
2272         .str_sec = "\0A!\0B",
2273         .str_sec_size = sizeof("\0A!\0B"),
2274         .map_type = BPF_MAP_TYPE_ARRAY,
2275         .map_name = "enum_type_check_btf",
2276         .key_size = sizeof(int),
2277         .value_size = sizeof(int),
2278         .key_type_id = 1,
2279         .value_type_id = 1,
2280         .max_entries = 4,
2281         .btf_load_err = true,
2282         .err_str = "Invalid name",
2283 },
2284
2285 {
2286         .descr = "enum member (invalid name, name_off = 0)",
2287         .raw_types = {
2288                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2289                 BTF_TYPE_ENC(0,
2290                              BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1),
2291                              sizeof(int)),                              /* [2] */
2292                 BTF_ENUM_ENC(0, 0),
2293                 BTF_END_RAW,
2294         },
2295         .str_sec = "",
2296         .str_sec_size = sizeof(""),
2297         .map_type = BPF_MAP_TYPE_ARRAY,
2298         .map_name = "enum_type_check_btf",
2299         .key_size = sizeof(int),
2300         .value_size = sizeof(int),
2301         .key_type_id = 1,
2302         .value_type_id = 1,
2303         .max_entries = 4,
2304         .btf_load_err = true,
2305         .err_str = "Invalid name",
2306 },
2307
2308 {
2309         .descr = "enum member (invalid name, invalid identifier)",
2310         .raw_types = {
2311                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2312                 BTF_TYPE_ENC(0,
2313                              BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1),
2314                              sizeof(int)),                              /* [2] */
2315                 BTF_ENUM_ENC(NAME_TBD, 0),
2316                 BTF_END_RAW,
2317         },
2318         .str_sec = "\0A!",
2319         .str_sec_size = sizeof("\0A!"),
2320         .map_type = BPF_MAP_TYPE_ARRAY,
2321         .map_name = "enum_type_check_btf",
2322         .key_size = sizeof(int),
2323         .value_size = sizeof(int),
2324         .key_type_id = 1,
2325         .value_type_id = 1,
2326         .max_entries = 4,
2327         .btf_load_err = true,
2328         .err_str = "Invalid name",
2329 },
2330 {
2331         .descr = "arraymap invalid btf key (a bit field)",
2332         .raw_types = {
2333                 /* int */                               /* [1] */
2334                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
2335                 /* 32 bit int with 32 bit offset */     /* [2] */
2336                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 32, 32, 8),
2337                 BTF_END_RAW,
2338         },
2339         .str_sec = "",
2340         .str_sec_size = sizeof(""),
2341         .map_type = BPF_MAP_TYPE_ARRAY,
2342         .map_name = "array_map_check_btf",
2343         .key_size = sizeof(int),
2344         .value_size = sizeof(int),
2345         .key_type_id = 2,
2346         .value_type_id = 1,
2347         .max_entries = 4,
2348         .map_create_err = true,
2349 },
2350
2351 {
2352         .descr = "arraymap invalid btf key (!= 32 bits)",
2353         .raw_types = {
2354                 /* int */                               /* [1] */
2355                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
2356                 /* 16 bit int with 0 bit offset */      /* [2] */
2357                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 16, 2),
2358                 BTF_END_RAW,
2359         },
2360         .str_sec = "",
2361         .str_sec_size = sizeof(""),
2362         .map_type = BPF_MAP_TYPE_ARRAY,
2363         .map_name = "array_map_check_btf",
2364         .key_size = sizeof(int),
2365         .value_size = sizeof(int),
2366         .key_type_id = 2,
2367         .value_type_id = 1,
2368         .max_entries = 4,
2369         .map_create_err = true,
2370 },
2371
2372 {
2373         .descr = "arraymap invalid btf value (too small)",
2374         .raw_types = {
2375                 /* int */                               /* [1] */
2376                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
2377                 BTF_END_RAW,
2378         },
2379         .str_sec = "",
2380         .str_sec_size = sizeof(""),
2381         .map_type = BPF_MAP_TYPE_ARRAY,
2382         .map_name = "array_map_check_btf",
2383         .key_size = sizeof(int),
2384         /* btf_value_size < map->value_size */
2385         .value_size = sizeof(__u64),
2386         .key_type_id = 1,
2387         .value_type_id = 1,
2388         .max_entries = 4,
2389         .map_create_err = true,
2390 },
2391
2392 {
2393         .descr = "arraymap invalid btf value (too big)",
2394         .raw_types = {
2395                 /* int */                               /* [1] */
2396                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
2397                 BTF_END_RAW,
2398         },
2399         .str_sec = "",
2400         .str_sec_size = sizeof(""),
2401         .map_type = BPF_MAP_TYPE_ARRAY,
2402         .map_name = "array_map_check_btf",
2403         .key_size = sizeof(int),
2404         /* btf_value_size > map->value_size */
2405         .value_size = sizeof(__u16),
2406         .key_type_id = 1,
2407         .value_type_id = 1,
2408         .max_entries = 4,
2409         .map_create_err = true,
2410 },
2411
2412 {
2413         .descr = "func proto (int (*)(int, unsigned int))",
2414         .raw_types = {
2415                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [1] */
2416                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),               /* [2] */
2417                 /* int (*)(int, unsigned int) */
2418                 BTF_FUNC_PROTO_ENC(1, 2),                       /* [3] */
2419                         BTF_FUNC_PROTO_ARG_ENC(0, 1),
2420                         BTF_FUNC_PROTO_ARG_ENC(0, 2),
2421                 BTF_END_RAW,
2422         },
2423         .str_sec = "",
2424         .str_sec_size = sizeof(""),
2425         .map_type = BPF_MAP_TYPE_ARRAY,
2426         .map_name = "func_proto_type_check_btf",
2427         .key_size = sizeof(int),
2428         .value_size = sizeof(int),
2429         .key_type_id = 1,
2430         .value_type_id = 1,
2431         .max_entries = 4,
2432 },
2433
2434 {
2435         .descr = "func proto (vararg)",
2436         .raw_types = {
2437                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
2438                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),               /* [2] */
2439                 /* void (*)(int, unsigned int, ...) */
2440                 BTF_FUNC_PROTO_ENC(0, 3),                       /* [3] */
2441                         BTF_FUNC_PROTO_ARG_ENC(0, 1),
2442                         BTF_FUNC_PROTO_ARG_ENC(0, 2),
2443                         BTF_FUNC_PROTO_ARG_ENC(0, 0),
2444                 BTF_END_RAW,
2445         },
2446         .str_sec = "",
2447         .str_sec_size = sizeof(""),
2448         .map_type = BPF_MAP_TYPE_ARRAY,
2449         .map_name = "func_proto_type_check_btf",
2450         .key_size = sizeof(int),
2451         .value_size = sizeof(int),
2452         .key_type_id = 1,
2453         .value_type_id = 1,
2454         .max_entries = 4,
2455 },
2456
2457 {
2458         .descr = "func proto (vararg with name)",
2459         .raw_types = {
2460                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
2461                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),               /* [2] */
2462                 /* void (*)(int a, unsigned int b, ... c) */
2463                 BTF_FUNC_PROTO_ENC(0, 3),                       /* [3] */
2464                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
2465                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
2466                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 0),
2467                 BTF_END_RAW,
2468         },
2469         .str_sec = "\0a\0b\0c",
2470         .str_sec_size = sizeof("\0a\0b\0c"),
2471         .map_type = BPF_MAP_TYPE_ARRAY,
2472         .map_name = "func_proto_type_check_btf",
2473         .key_size = sizeof(int),
2474         .value_size = sizeof(int),
2475         .key_type_id = 1,
2476         .value_type_id = 1,
2477         .max_entries = 4,
2478         .btf_load_err = true,
2479         .err_str = "Invalid arg#3",
2480 },
2481
2482 {
2483         .descr = "func proto (arg after vararg)",
2484         .raw_types = {
2485                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
2486                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),               /* [2] */
2487                 /* void (*)(int a, ..., unsigned int b) */
2488                 BTF_FUNC_PROTO_ENC(0, 3),                       /* [3] */
2489                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
2490                         BTF_FUNC_PROTO_ARG_ENC(0, 0),
2491                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
2492                 BTF_END_RAW,
2493         },
2494         .str_sec = "\0a\0b",
2495         .str_sec_size = sizeof("\0a\0b"),
2496         .map_type = BPF_MAP_TYPE_ARRAY,
2497         .map_name = "func_proto_type_check_btf",
2498         .key_size = sizeof(int),
2499         .value_size = sizeof(int),
2500         .key_type_id = 1,
2501         .value_type_id = 1,
2502         .max_entries = 4,
2503         .btf_load_err = true,
2504         .err_str = "Invalid arg#2",
2505 },
2506
2507 {
2508         .descr = "func proto (CONST=>TYPEDEF=>PTR=>FUNC_PROTO)",
2509         .raw_types = {
2510                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
2511                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),               /* [2] */
2512                 /* typedef void (*func_ptr)(int, unsigned int) */
2513                 BTF_TYPEDEF_ENC(NAME_TBD, 5),                   /* [3] */
2514                 /* const func_ptr */
2515                 BTF_CONST_ENC(3),                               /* [4] */
2516                 BTF_PTR_ENC(6),                                 /* [5] */
2517                 BTF_FUNC_PROTO_ENC(0, 2),                       /* [6] */
2518                         BTF_FUNC_PROTO_ARG_ENC(0, 1),
2519                         BTF_FUNC_PROTO_ARG_ENC(0, 2),
2520                 BTF_END_RAW,
2521         },
2522         .str_sec = "\0func_ptr",
2523         .str_sec_size = sizeof("\0func_ptr"),
2524         .map_type = BPF_MAP_TYPE_ARRAY,
2525         .map_name = "func_proto_type_check_btf",
2526         .key_size = sizeof(int),
2527         .value_size = sizeof(int),
2528         .key_type_id = 1,
2529         .value_type_id = 1,
2530         .max_entries = 4,
2531 },
2532
2533 {
2534         .descr = "func proto (TYPEDEF=>FUNC_PROTO)",
2535         .raw_types = {
2536                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
2537                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),               /* [2] */
2538                 BTF_TYPEDEF_ENC(NAME_TBD, 4),                   /* [3] */
2539                 BTF_FUNC_PROTO_ENC(0, 2),                       /* [4] */
2540                         BTF_FUNC_PROTO_ARG_ENC(0, 1),
2541                         BTF_FUNC_PROTO_ARG_ENC(0, 2),
2542                 BTF_END_RAW,
2543         },
2544         .str_sec = "\0func_typedef",
2545         .str_sec_size = sizeof("\0func_typedef"),
2546         .map_type = BPF_MAP_TYPE_ARRAY,
2547         .map_name = "func_proto_type_check_btf",
2548         .key_size = sizeof(int),
2549         .value_size = sizeof(int),
2550         .key_type_id = 1,
2551         .value_type_id = 1,
2552         .max_entries = 4,
2553 },
2554
2555 {
2556         .descr = "func proto (btf_resolve(arg))",
2557         .raw_types = {
2558                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
2559                 /* void (*)(const void *) */
2560                 BTF_FUNC_PROTO_ENC(0, 1),                       /* [2] */
2561                         BTF_FUNC_PROTO_ARG_ENC(0, 3),
2562                 BTF_CONST_ENC(4),                               /* [3] */
2563                 BTF_PTR_ENC(0),                                 /* [4] */
2564                 BTF_END_RAW,
2565         },
2566         .str_sec = "",
2567         .str_sec_size = sizeof(""),
2568         .map_type = BPF_MAP_TYPE_ARRAY,
2569         .map_name = "func_proto_type_check_btf",
2570         .key_size = sizeof(int),
2571         .value_size = sizeof(int),
2572         .key_type_id = 1,
2573         .value_type_id = 1,
2574         .max_entries = 4,
2575 },
2576
2577 {
2578         .descr = "func proto (Not all arg has name)",
2579         .raw_types = {
2580                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
2581                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),               /* [2] */
2582                 /* void (*)(int, unsigned int b) */
2583                 BTF_FUNC_PROTO_ENC(0, 2),                       /* [3] */
2584                         BTF_FUNC_PROTO_ARG_ENC(0, 1),
2585                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
2586                 BTF_END_RAW,
2587         },
2588         .str_sec = "\0b",
2589         .str_sec_size = sizeof("\0b"),
2590         .map_type = BPF_MAP_TYPE_ARRAY,
2591         .map_name = "func_proto_type_check_btf",
2592         .key_size = sizeof(int),
2593         .value_size = sizeof(int),
2594         .key_type_id = 1,
2595         .value_type_id = 1,
2596         .max_entries = 4,
2597 },
2598
2599 {
2600         .descr = "func proto (Bad arg name_off)",
2601         .raw_types = {
2602                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
2603                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),               /* [2] */
2604                 /* void (*)(int a, unsigned int <bad_name_off>) */
2605                 BTF_FUNC_PROTO_ENC(0, 2),                       /* [3] */
2606                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
2607                         BTF_FUNC_PROTO_ARG_ENC(0x0fffffff, 2),
2608                 BTF_END_RAW,
2609         },
2610         .str_sec = "\0a",
2611         .str_sec_size = sizeof("\0a"),
2612         .map_type = BPF_MAP_TYPE_ARRAY,
2613         .map_name = "func_proto_type_check_btf",
2614         .key_size = sizeof(int),
2615         .value_size = sizeof(int),
2616         .key_type_id = 1,
2617         .value_type_id = 1,
2618         .max_entries = 4,
2619         .btf_load_err = true,
2620         .err_str = "Invalid arg#2",
2621 },
2622
2623 {
2624         .descr = "func proto (Bad arg name)",
2625         .raw_types = {
2626                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
2627                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),               /* [2] */
2628                 /* void (*)(int a, unsigned int !!!) */
2629                 BTF_FUNC_PROTO_ENC(0, 2),                       /* [3] */
2630                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
2631                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
2632                 BTF_END_RAW,
2633         },
2634         .str_sec = "\0a\0!!!",
2635         .str_sec_size = sizeof("\0a\0!!!"),
2636         .map_type = BPF_MAP_TYPE_ARRAY,
2637         .map_name = "func_proto_type_check_btf",
2638         .key_size = sizeof(int),
2639         .value_size = sizeof(int),
2640         .key_type_id = 1,
2641         .value_type_id = 1,
2642         .max_entries = 4,
2643         .btf_load_err = true,
2644         .err_str = "Invalid arg#2",
2645 },
2646
2647 {
2648         .descr = "func proto (Invalid return type)",
2649         .raw_types = {
2650                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
2651                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),               /* [2] */
2652                 /* <bad_ret_type> (*)(int, unsigned int) */
2653                 BTF_FUNC_PROTO_ENC(100, 2),                     /* [3] */
2654                         BTF_FUNC_PROTO_ARG_ENC(0, 1),
2655                         BTF_FUNC_PROTO_ARG_ENC(0, 2),
2656                 BTF_END_RAW,
2657         },
2658         .str_sec = "",
2659         .str_sec_size = sizeof(""),
2660         .map_type = BPF_MAP_TYPE_ARRAY,
2661         .map_name = "func_proto_type_check_btf",
2662         .key_size = sizeof(int),
2663         .value_size = sizeof(int),
2664         .key_type_id = 1,
2665         .value_type_id = 1,
2666         .max_entries = 4,
2667         .btf_load_err = true,
2668         .err_str = "Invalid return type",
2669 },
2670
2671 {
2672         .descr = "func proto (with func name)",
2673         .raw_types = {
2674                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
2675                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),               /* [2] */
2676                 /* void func_proto(int, unsigned int) */
2677                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_FUNC_PROTO, 0, 2), 0),     /* [3] */
2678                         BTF_FUNC_PROTO_ARG_ENC(0, 1),
2679                         BTF_FUNC_PROTO_ARG_ENC(0, 2),
2680                 BTF_END_RAW,
2681         },
2682         .str_sec = "\0func_proto",
2683         .str_sec_size = sizeof("\0func_proto"),
2684         .map_type = BPF_MAP_TYPE_ARRAY,
2685         .map_name = "func_proto_type_check_btf",
2686         .key_size = sizeof(int),
2687         .value_size = sizeof(int),
2688         .key_type_id = 1,
2689         .value_type_id = 1,
2690         .max_entries = 4,
2691         .btf_load_err = true,
2692         .err_str = "Invalid name",
2693 },
2694
2695 {
2696         .descr = "func proto (const void arg)",
2697         .raw_types = {
2698                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
2699                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),               /* [2] */
2700                 /* void (*)(const void) */
2701                 BTF_FUNC_PROTO_ENC(0, 1),                       /* [3] */
2702                         BTF_FUNC_PROTO_ARG_ENC(0, 4),
2703                 BTF_CONST_ENC(0),                               /* [4] */
2704                 BTF_END_RAW,
2705         },
2706         .str_sec = "",
2707         .str_sec_size = sizeof(""),
2708         .map_type = BPF_MAP_TYPE_ARRAY,
2709         .map_name = "func_proto_type_check_btf",
2710         .key_size = sizeof(int),
2711         .value_size = sizeof(int),
2712         .key_type_id = 1,
2713         .value_type_id = 1,
2714         .max_entries = 4,
2715         .btf_load_err = true,
2716         .err_str = "Invalid arg#1",
2717 },
2718
2719 {
2720         .descr = "func (void func(int a, unsigned int b))",
2721         .raw_types = {
2722                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
2723                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),               /* [2] */
2724                 /* void (*)(int a, unsigned int b) */
2725                 BTF_FUNC_PROTO_ENC(0, 2),                       /* [3] */
2726                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
2727                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
2728                 /* void func(int a, unsigned int b) */
2729                 BTF_FUNC_ENC(NAME_TBD, 3),                      /* [4] */
2730                 BTF_END_RAW,
2731         },
2732         .str_sec = "\0a\0b\0func",
2733         .str_sec_size = sizeof("\0a\0b\0func"),
2734         .map_type = BPF_MAP_TYPE_ARRAY,
2735         .map_name = "func_type_check_btf",
2736         .key_size = sizeof(int),
2737         .value_size = sizeof(int),
2738         .key_type_id = 1,
2739         .value_type_id = 1,
2740         .max_entries = 4,
2741 },
2742
2743 {
2744         .descr = "func (No func name)",
2745         .raw_types = {
2746                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
2747                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),               /* [2] */
2748                 /* void (*)(int a, unsigned int b) */
2749                 BTF_FUNC_PROTO_ENC(0, 2),                       /* [3] */
2750                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
2751                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
2752                 /* void <no_name>(int a, unsigned int b) */
2753                 BTF_FUNC_ENC(0, 3),                             /* [4] */
2754                 BTF_END_RAW,
2755         },
2756         .str_sec = "\0a\0b",
2757         .str_sec_size = sizeof("\0a\0b"),
2758         .map_type = BPF_MAP_TYPE_ARRAY,
2759         .map_name = "func_type_check_btf",
2760         .key_size = sizeof(int),
2761         .value_size = sizeof(int),
2762         .key_type_id = 1,
2763         .value_type_id = 1,
2764         .max_entries = 4,
2765         .btf_load_err = true,
2766         .err_str = "Invalid name",
2767 },
2768
2769 {
2770         .descr = "func (Invalid func name)",
2771         .raw_types = {
2772                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
2773                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),               /* [2] */
2774                 /* void (*)(int a, unsigned int b) */
2775                 BTF_FUNC_PROTO_ENC(0, 2),                       /* [3] */
2776                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
2777                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
2778                 /* void !!!(int a, unsigned int b) */
2779                 BTF_FUNC_ENC(NAME_TBD, 3),                      /* [4] */
2780                 BTF_END_RAW,
2781         },
2782         .str_sec = "\0a\0b\0!!!",
2783         .str_sec_size = sizeof("\0a\0b\0!!!"),
2784         .map_type = BPF_MAP_TYPE_ARRAY,
2785         .map_name = "func_type_check_btf",
2786         .key_size = sizeof(int),
2787         .value_size = sizeof(int),
2788         .key_type_id = 1,
2789         .value_type_id = 1,
2790         .max_entries = 4,
2791         .btf_load_err = true,
2792         .err_str = "Invalid name",
2793 },
2794
2795 {
2796         .descr = "func (Some arg has no name)",
2797         .raw_types = {
2798                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
2799                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),               /* [2] */
2800                 /* void (*)(int a, unsigned int) */
2801                 BTF_FUNC_PROTO_ENC(0, 2),                       /* [3] */
2802                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
2803                         BTF_FUNC_PROTO_ARG_ENC(0, 2),
2804                 /* void func(int a, unsigned int) */
2805                 BTF_FUNC_ENC(NAME_TBD, 3),                      /* [4] */
2806                 BTF_END_RAW,
2807         },
2808         .str_sec = "\0a\0func",
2809         .str_sec_size = sizeof("\0a\0func"),
2810         .map_type = BPF_MAP_TYPE_ARRAY,
2811         .map_name = "func_type_check_btf",
2812         .key_size = sizeof(int),
2813         .value_size = sizeof(int),
2814         .key_type_id = 1,
2815         .value_type_id = 1,
2816         .max_entries = 4,
2817         .btf_load_err = true,
2818         .err_str = "Invalid arg#2",
2819 },
2820
2821 {
2822         .descr = "func (Non zero vlen)",
2823         .raw_types = {
2824                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
2825                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),               /* [2] */
2826                 /* void (*)(int a, unsigned int b) */
2827                 BTF_FUNC_PROTO_ENC(0, 2),                       /* [3] */
2828                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
2829                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
2830                 /* void func(int a, unsigned int b) */
2831                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_FUNC, 0, 2), 3),   /* [4] */
2832                 BTF_END_RAW,
2833         },
2834         .str_sec = "\0a\0b\0func",
2835         .str_sec_size = sizeof("\0a\0b\0func"),
2836         .map_type = BPF_MAP_TYPE_ARRAY,
2837         .map_name = "func_type_check_btf",
2838         .key_size = sizeof(int),
2839         .value_size = sizeof(int),
2840         .key_type_id = 1,
2841         .value_type_id = 1,
2842         .max_entries = 4,
2843         .btf_load_err = true,
2844         .err_str = "Invalid func linkage",
2845 },
2846
2847 {
2848         .descr = "func (Not referring to FUNC_PROTO)",
2849         .raw_types = {
2850                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
2851                 BTF_FUNC_ENC(NAME_TBD, 1),                      /* [2] */
2852                 BTF_END_RAW,
2853         },
2854         .str_sec = "\0func",
2855         .str_sec_size = sizeof("\0func"),
2856         .map_type = BPF_MAP_TYPE_ARRAY,
2857         .map_name = "func_type_check_btf",
2858         .key_size = sizeof(int),
2859         .value_size = sizeof(int),
2860         .key_type_id = 1,
2861         .value_type_id = 1,
2862         .max_entries = 4,
2863         .btf_load_err = true,
2864         .err_str = "Invalid type_id",
2865 },
2866
2867 {
2868         .descr = "invalid int kind_flag",
2869         .raw_types = {
2870                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2871                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_INT, 1, 0), 4),   /* [2] */
2872                 BTF_INT_ENC(0, 0, 32),
2873                 BTF_END_RAW,
2874         },
2875         BTF_STR_SEC(""),
2876         .map_type = BPF_MAP_TYPE_ARRAY,
2877         .map_name = "int_type_check_btf",
2878         .key_size = sizeof(int),
2879         .value_size = sizeof(int),
2880         .key_type_id = 1,
2881         .value_type_id = 1,
2882         .max_entries = 4,
2883         .btf_load_err = true,
2884         .err_str = "Invalid btf_info kind_flag",
2885 },
2886
2887 {
2888         .descr = "invalid ptr kind_flag",
2889         .raw_types = {
2890                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2891                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 1, 0), 1),   /* [2] */
2892                 BTF_END_RAW,
2893         },
2894         BTF_STR_SEC(""),
2895         .map_type = BPF_MAP_TYPE_ARRAY,
2896         .map_name = "ptr_type_check_btf",
2897         .key_size = sizeof(int),
2898         .value_size = sizeof(int),
2899         .key_type_id = 1,
2900         .value_type_id = 1,
2901         .max_entries = 4,
2902         .btf_load_err = true,
2903         .err_str = "Invalid btf_info kind_flag",
2904 },
2905
2906 {
2907         .descr = "invalid array kind_flag",
2908         .raw_types = {
2909                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2910                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ARRAY, 1, 0), 0), /* [2] */
2911                 BTF_ARRAY_ENC(1, 1, 1),
2912                 BTF_END_RAW,
2913         },
2914         BTF_STR_SEC(""),
2915         .map_type = BPF_MAP_TYPE_ARRAY,
2916         .map_name = "array_type_check_btf",
2917         .key_size = sizeof(int),
2918         .value_size = sizeof(int),
2919         .key_type_id = 1,
2920         .value_type_id = 1,
2921         .max_entries = 4,
2922         .btf_load_err = true,
2923         .err_str = "Invalid btf_info kind_flag",
2924 },
2925
2926 {
2927         .descr = "valid fwd kind_flag",
2928         .raw_types = {
2929                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2930                 BTF_TYPE_ENC(NAME_TBD,
2931                              BTF_INFO_ENC(BTF_KIND_FWD, 1, 0), 0),      /* [2] */
2932                 BTF_END_RAW,
2933         },
2934         BTF_STR_SEC("\0A"),
2935         .map_type = BPF_MAP_TYPE_ARRAY,
2936         .map_name = "fwd_type_check_btf",
2937         .key_size = sizeof(int),
2938         .value_size = sizeof(int),
2939         .key_type_id = 1,
2940         .value_type_id = 1,
2941         .max_entries = 4,
2942 },
2943
2944 {
2945         .descr = "invalid typedef kind_flag",
2946         .raw_types = {
2947                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2948                 BTF_TYPE_ENC(NAME_TBD,
2949                              BTF_INFO_ENC(BTF_KIND_TYPEDEF, 1, 0), 1),  /* [2] */
2950                 BTF_END_RAW,
2951         },
2952         BTF_STR_SEC("\0A"),
2953         .map_type = BPF_MAP_TYPE_ARRAY,
2954         .map_name = "typedef_type_check_btf",
2955         .key_size = sizeof(int),
2956         .value_size = sizeof(int),
2957         .key_type_id = 1,
2958         .value_type_id = 1,
2959         .max_entries = 4,
2960         .btf_load_err = true,
2961         .err_str = "Invalid btf_info kind_flag",
2962 },
2963
2964 {
2965         .descr = "invalid volatile kind_flag",
2966         .raw_types = {
2967                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [1] */
2968                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_VOLATILE, 1, 0), 1),      /* [2] */
2969                 BTF_END_RAW,
2970         },
2971         BTF_STR_SEC(""),
2972         .map_type = BPF_MAP_TYPE_ARRAY,
2973         .map_name = "volatile_type_check_btf",
2974         .key_size = sizeof(int),
2975         .value_size = sizeof(int),
2976         .key_type_id = 1,
2977         .value_type_id = 1,
2978         .max_entries = 4,
2979         .btf_load_err = true,
2980         .err_str = "Invalid btf_info kind_flag",
2981 },
2982
2983 {
2984         .descr = "invalid const kind_flag",
2985         .raw_types = {
2986                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
2987                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 1, 0), 1), /* [2] */
2988                 BTF_END_RAW,
2989         },
2990         BTF_STR_SEC(""),
2991         .map_type = BPF_MAP_TYPE_ARRAY,
2992         .map_name = "const_type_check_btf",
2993         .key_size = sizeof(int),
2994         .value_size = sizeof(int),
2995         .key_type_id = 1,
2996         .value_type_id = 1,
2997         .max_entries = 4,
2998         .btf_load_err = true,
2999         .err_str = "Invalid btf_info kind_flag",
3000 },
3001
3002 {
3003         .descr = "invalid restrict kind_flag",
3004         .raw_types = {
3005                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [1] */
3006                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_RESTRICT, 1, 0), 1),      /* [2] */
3007                 BTF_END_RAW,
3008         },
3009         BTF_STR_SEC(""),
3010         .map_type = BPF_MAP_TYPE_ARRAY,
3011         .map_name = "restrict_type_check_btf",
3012         .key_size = sizeof(int),
3013         .value_size = sizeof(int),
3014         .key_type_id = 1,
3015         .value_type_id = 1,
3016         .max_entries = 4,
3017         .btf_load_err = true,
3018         .err_str = "Invalid btf_info kind_flag",
3019 },
3020
3021 {
3022         .descr = "invalid func kind_flag",
3023         .raw_types = {
3024                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [1] */
3025                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_FUNC_PROTO, 0, 0), 0),    /* [2] */
3026                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_FUNC, 1, 0), 2),   /* [3] */
3027                 BTF_END_RAW,
3028         },
3029         BTF_STR_SEC("\0A"),
3030         .map_type = BPF_MAP_TYPE_ARRAY,
3031         .map_name = "func_type_check_btf",
3032         .key_size = sizeof(int),
3033         .value_size = sizeof(int),
3034         .key_type_id = 1,
3035         .value_type_id = 1,
3036         .max_entries = 4,
3037         .btf_load_err = true,
3038         .err_str = "Invalid btf_info kind_flag",
3039 },
3040
3041 {
3042         .descr = "invalid func_proto kind_flag",
3043         .raw_types = {
3044                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [1] */
3045                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_FUNC_PROTO, 1, 0), 0),    /* [2] */
3046                 BTF_END_RAW,
3047         },
3048         BTF_STR_SEC(""),
3049         .map_type = BPF_MAP_TYPE_ARRAY,
3050         .map_name = "func_proto_type_check_btf",
3051         .key_size = sizeof(int),
3052         .value_size = sizeof(int),
3053         .key_type_id = 1,
3054         .value_type_id = 1,
3055         .max_entries = 4,
3056         .btf_load_err = true,
3057         .err_str = "Invalid btf_info kind_flag",
3058 },
3059
3060 {
3061         .descr = "valid struct, kind_flag, bitfield_size = 0",
3062         .raw_types = {
3063                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [1] */
3064                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 2), 8),        /* [2] */
3065                 BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(0, 0)),
3066                 BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(0, 32)),
3067                 BTF_END_RAW,
3068         },
3069         BTF_STR_SEC("\0A\0B"),
3070         .map_type = BPF_MAP_TYPE_ARRAY,
3071         .map_name = "struct_type_check_btf",
3072         .key_size = sizeof(int),
3073         .value_size = sizeof(int),
3074         .key_type_id = 1,
3075         .value_type_id = 1,
3076         .max_entries = 4,
3077 },
3078
3079 {
3080         .descr = "valid struct, kind_flag, int member, bitfield_size != 0",
3081         .raw_types = {
3082                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [1] */
3083                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 2), 4),        /* [2] */
3084                 BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(4, 0)),
3085                 BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(4, 4)),
3086                 BTF_END_RAW,
3087         },
3088         BTF_STR_SEC("\0A\0B"),
3089         .map_type = BPF_MAP_TYPE_ARRAY,
3090         .map_name = "struct_type_check_btf",
3091         .key_size = sizeof(int),
3092         .value_size = sizeof(int),
3093         .key_type_id = 1,
3094         .value_type_id = 1,
3095         .max_entries = 4,
3096 },
3097
3098 {
3099         .descr = "valid union, kind_flag, int member, bitfield_size != 0",
3100         .raw_types = {
3101                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
3102                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_UNION, 1, 2), 4), /* [2] */
3103                 BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(4, 0)),
3104                 BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(4, 0)),
3105                 BTF_END_RAW,
3106         },
3107         BTF_STR_SEC("\0A\0B"),
3108         .map_type = BPF_MAP_TYPE_ARRAY,
3109         .map_name = "union_type_check_btf",
3110         .key_size = sizeof(int),
3111         .value_size = sizeof(int),
3112         .key_type_id = 1,
3113         .value_type_id = 1,
3114         .max_entries = 4,
3115 },
3116
3117 {
3118         .descr = "valid struct, kind_flag, enum member, bitfield_size != 0",
3119         .raw_types = {
3120                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
3121                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4),  /* [2] */
3122                 BTF_ENUM_ENC(NAME_TBD, 0),
3123                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 2), 4),/* [3] */
3124                 BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(4, 0)),
3125                 BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(4, 4)),
3126                 BTF_END_RAW,
3127         },
3128         BTF_STR_SEC("\0A\0B\0C"),
3129         .map_type = BPF_MAP_TYPE_ARRAY,
3130         .map_name = "struct_type_check_btf",
3131         .key_size = sizeof(int),
3132         .value_size = sizeof(int),
3133         .key_type_id = 1,
3134         .value_type_id = 1,
3135         .max_entries = 4,
3136 },
3137
3138 {
3139         .descr = "valid union, kind_flag, enum member, bitfield_size != 0",
3140         .raw_types = {
3141                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
3142                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4),  /* [2] */
3143                 BTF_ENUM_ENC(NAME_TBD, 0),
3144                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_UNION, 1, 2), 4), /* [3] */
3145                 BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(4, 0)),
3146                 BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(4, 0)),
3147                 BTF_END_RAW,
3148         },
3149         BTF_STR_SEC("\0A\0B\0C"),
3150         .map_type = BPF_MAP_TYPE_ARRAY,
3151         .map_name = "union_type_check_btf",
3152         .key_size = sizeof(int),
3153         .value_size = sizeof(int),
3154         .key_type_id = 1,
3155         .value_type_id = 1,
3156         .max_entries = 4,
3157 },
3158
3159 {
3160         .descr = "valid struct, kind_flag, typedef member, bitfield_size != 0",
3161         .raw_types = {
3162                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
3163                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4),  /* [2] */
3164                 BTF_ENUM_ENC(NAME_TBD, 0),
3165                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 2), 4),/* [3] */
3166                 BTF_MEMBER_ENC(NAME_TBD, 4, BTF_MEMBER_OFFSET(4, 0)),
3167                 BTF_MEMBER_ENC(NAME_TBD, 5, BTF_MEMBER_OFFSET(4, 4)),
3168                 BTF_TYPEDEF_ENC(NAME_TBD, 1),                           /* [4] */
3169                 BTF_TYPEDEF_ENC(NAME_TBD, 2),                           /* [5] */
3170                 BTF_END_RAW,
3171         },
3172         BTF_STR_SEC("\0A\0B\0C\0D\0E"),
3173         .map_type = BPF_MAP_TYPE_ARRAY,
3174         .map_name = "struct_type_check_btf",
3175         .key_size = sizeof(int),
3176         .value_size = sizeof(int),
3177         .key_type_id = 1,
3178         .value_type_id = 1,
3179         .max_entries = 4,
3180 },
3181
3182 {
3183         .descr = "valid union, kind_flag, typedef member, bitfield_size != 0",
3184         .raw_types = {
3185                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
3186                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4),  /* [2] */
3187                 BTF_ENUM_ENC(NAME_TBD, 0),
3188                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_UNION, 1, 2), 4), /* [3] */
3189                 BTF_MEMBER_ENC(NAME_TBD, 4, BTF_MEMBER_OFFSET(4, 0)),
3190                 BTF_MEMBER_ENC(NAME_TBD, 5, BTF_MEMBER_OFFSET(4, 0)),
3191                 BTF_TYPEDEF_ENC(NAME_TBD, 1),                           /* [4] */
3192                 BTF_TYPEDEF_ENC(NAME_TBD, 2),                           /* [5] */
3193                 BTF_END_RAW,
3194         },
3195         BTF_STR_SEC("\0A\0B\0C\0D\0E"),
3196         .map_type = BPF_MAP_TYPE_ARRAY,
3197         .map_name = "union_type_check_btf",
3198         .key_size = sizeof(int),
3199         .value_size = sizeof(int),
3200         .key_type_id = 1,
3201         .value_type_id = 1,
3202         .max_entries = 4,
3203 },
3204
3205 {
3206         .descr = "invalid struct, kind_flag, bitfield_size greater than struct size",
3207         .raw_types = {
3208                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [1] */
3209                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 2), 4),        /* [2] */
3210                 BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(20, 0)),
3211                 BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(20, 20)),
3212                 BTF_END_RAW,
3213         },
3214         BTF_STR_SEC("\0A\0B"),
3215         .map_type = BPF_MAP_TYPE_ARRAY,
3216         .map_name = "struct_type_check_btf",
3217         .key_size = sizeof(int),
3218         .value_size = sizeof(int),
3219         .key_type_id = 1,
3220         .value_type_id = 1,
3221         .max_entries = 4,
3222         .btf_load_err = true,
3223         .err_str = "Member exceeds struct_size",
3224 },
3225
3226 {
3227         .descr = "invalid struct, kind_flag, bitfield base_type int not regular",
3228         .raw_types = {
3229                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [1] */
3230                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 20, 4),                  /* [2] */
3231                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 2), 4),        /* [3] */
3232                 BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(20, 0)),
3233                 BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(20, 20)),
3234                 BTF_END_RAW,
3235         },
3236         BTF_STR_SEC("\0A\0B"),
3237         .map_type = BPF_MAP_TYPE_ARRAY,
3238         .map_name = "struct_type_check_btf",
3239         .key_size = sizeof(int),
3240         .value_size = sizeof(int),
3241         .key_type_id = 1,
3242         .value_type_id = 1,
3243         .max_entries = 4,
3244         .btf_load_err = true,
3245         .err_str = "Invalid member base type",
3246 },
3247
3248 {
3249         .descr = "invalid struct, kind_flag, base_type int not regular",
3250         .raw_types = {
3251                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [1] */
3252                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 12, 4),                  /* [2] */
3253                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 2), 4),        /* [3] */
3254                 BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(8, 0)),
3255                 BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(8, 8)),
3256                 BTF_END_RAW,
3257         },
3258         BTF_STR_SEC("\0A\0B"),
3259         .map_type = BPF_MAP_TYPE_ARRAY,
3260         .map_name = "struct_type_check_btf",
3261         .key_size = sizeof(int),
3262         .value_size = sizeof(int),
3263         .key_type_id = 1,
3264         .value_type_id = 1,
3265         .max_entries = 4,
3266         .btf_load_err = true,
3267         .err_str = "Invalid member base type",
3268 },
3269
3270 {
3271         .descr = "invalid union, kind_flag, bitfield_size greater than struct size",
3272         .raw_types = {
3273                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),          /* [1] */
3274                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_UNION, 1, 2), 2), /* [2] */
3275                 BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(8, 0)),
3276                 BTF_MEMBER_ENC(NAME_TBD, 1, BTF_MEMBER_OFFSET(20, 0)),
3277                 BTF_END_RAW,
3278         },
3279         BTF_STR_SEC("\0A\0B"),
3280         .map_type = BPF_MAP_TYPE_ARRAY,
3281         .map_name = "union_type_check_btf",
3282         .key_size = sizeof(int),
3283         .value_size = sizeof(int),
3284         .key_type_id = 1,
3285         .value_type_id = 1,
3286         .max_entries = 4,
3287         .btf_load_err = true,
3288         .err_str = "Member exceeds struct_size",
3289 },
3290
3291 {
3292         .descr = "invalid struct, kind_flag, int member, bitfield_size = 0, wrong byte alignment",
3293         .raw_types = {
3294                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [1] */
3295                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [2] */
3296                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 2), 12),       /* [3] */
3297                 BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(0, 0)),
3298                 BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(0, 36)),
3299                 BTF_END_RAW,
3300         },
3301         BTF_STR_SEC("\0A\0B"),
3302         .map_type = BPF_MAP_TYPE_ARRAY,
3303         .map_name = "struct_type_check_btf",
3304         .key_size = sizeof(int),
3305         .value_size = sizeof(int),
3306         .key_type_id = 1,
3307         .value_type_id = 1,
3308         .max_entries = 4,
3309         .btf_load_err = true,
3310         .err_str = "Invalid member offset",
3311 },
3312
3313 {
3314         .descr = "invalid struct, kind_flag, enum member, bitfield_size = 0, wrong byte alignment",
3315         .raw_types = {
3316                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [1] */
3317                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [2] */
3318                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4),  /* [2] */
3319                 BTF_ENUM_ENC(NAME_TBD, 0),
3320                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 2), 12),       /* [3] */
3321                 BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(0, 0)),
3322                 BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(0, 36)),
3323                 BTF_END_RAW,
3324         },
3325         BTF_STR_SEC("\0A\0B\0C"),
3326         .map_type = BPF_MAP_TYPE_ARRAY,
3327         .map_name = "struct_type_check_btf",
3328         .key_size = sizeof(int),
3329         .value_size = sizeof(int),
3330         .key_type_id = 1,
3331         .value_type_id = 1,
3332         .max_entries = 4,
3333         .btf_load_err = true,
3334         .err_str = "Invalid member offset",
3335 },
3336
3337 {
3338         .descr = "128-bit int",
3339         .raw_types = {
3340                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [1] */
3341                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 128, 16),                /* [2] */
3342                 BTF_END_RAW,
3343         },
3344         BTF_STR_SEC("\0A"),
3345         .map_type = BPF_MAP_TYPE_ARRAY,
3346         .map_name = "int_type_check_btf",
3347         .key_size = sizeof(int),
3348         .value_size = sizeof(int),
3349         .key_type_id = 1,
3350         .value_type_id = 1,
3351         .max_entries = 4,
3352 },
3353
3354 {
3355         .descr = "struct, 128-bit int member",
3356         .raw_types = {
3357                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [1] */
3358                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 128, 16),                /* [2] */
3359                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), 16),       /* [3] */
3360                 BTF_MEMBER_ENC(NAME_TBD, 2, 0),
3361                 BTF_END_RAW,
3362         },
3363         BTF_STR_SEC("\0A"),
3364         .map_type = BPF_MAP_TYPE_ARRAY,
3365         .map_name = "struct_type_check_btf",
3366         .key_size = sizeof(int),
3367         .value_size = sizeof(int),
3368         .key_type_id = 1,
3369         .value_type_id = 1,
3370         .max_entries = 4,
3371 },
3372
3373 {
3374         .descr = "struct, 120-bit int member bitfield",
3375         .raw_types = {
3376                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [1] */
3377                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 120, 16),                /* [2] */
3378                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 1), 16),       /* [3] */
3379                 BTF_MEMBER_ENC(NAME_TBD, 2, 0),
3380                 BTF_END_RAW,
3381         },
3382         BTF_STR_SEC("\0A"),
3383         .map_type = BPF_MAP_TYPE_ARRAY,
3384         .map_name = "struct_type_check_btf",
3385         .key_size = sizeof(int),
3386         .value_size = sizeof(int),
3387         .key_type_id = 1,
3388         .value_type_id = 1,
3389         .max_entries = 4,
3390 },
3391
3392 {
3393         .descr = "struct, kind_flag, 128-bit int member",
3394         .raw_types = {
3395                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [1] */
3396                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 128, 16),                /* [2] */
3397                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 1), 16),       /* [3] */
3398                 BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(0, 0)),
3399                 BTF_END_RAW,
3400         },
3401         BTF_STR_SEC("\0A"),
3402         .map_type = BPF_MAP_TYPE_ARRAY,
3403         .map_name = "struct_type_check_btf",
3404         .key_size = sizeof(int),
3405         .value_size = sizeof(int),
3406         .key_type_id = 1,
3407         .value_type_id = 1,
3408         .max_entries = 4,
3409 },
3410
3411 {
3412         .descr = "struct, kind_flag, 120-bit int member bitfield",
3413         .raw_types = {
3414                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [1] */
3415                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 128, 16),                /* [2] */
3416                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 1), 16),       /* [3] */
3417                 BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(120, 0)),
3418                 BTF_END_RAW,
3419         },
3420         BTF_STR_SEC("\0A"),
3421         .map_type = BPF_MAP_TYPE_ARRAY,
3422         .map_name = "struct_type_check_btf",
3423         .key_size = sizeof(int),
3424         .value_size = sizeof(int),
3425         .key_type_id = 1,
3426         .value_type_id = 1,
3427         .max_entries = 4,
3428 },
3429 /*
3430  * typedef int arr_t[16];
3431  * struct s {
3432  *      arr_t *a;
3433  * };
3434  */
3435 {
3436         .descr = "struct->ptr->typedef->array->int size resolution",
3437         .raw_types = {
3438                 BTF_STRUCT_ENC(NAME_TBD, 1, 8),                 /* [1] */
3439                 BTF_MEMBER_ENC(NAME_TBD, 2, 0),
3440                 BTF_PTR_ENC(3),                                 /* [2] */
3441                 BTF_TYPEDEF_ENC(NAME_TBD, 4),                   /* [3] */
3442                 BTF_TYPE_ARRAY_ENC(5, 5, 16),                   /* [4] */
3443                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [5] */
3444                 BTF_END_RAW,
3445         },
3446         BTF_STR_SEC("\0s\0a\0arr_t"),
3447         .map_type = BPF_MAP_TYPE_ARRAY,
3448         .map_name = "ptr_mod_chain_size_resolve_map",
3449         .key_size = sizeof(int),
3450         .value_size = sizeof(int) * 16,
3451         .key_type_id = 5 /* int */,
3452         .value_type_id = 3 /* arr_t */,
3453         .max_entries = 4,
3454 },
3455 /*
3456  * typedef int arr_t[16][8][4];
3457  * struct s {
3458  *      arr_t *a;
3459  * };
3460  */
3461 {
3462         .descr = "struct->ptr->typedef->multi-array->int size resolution",
3463         .raw_types = {
3464                 BTF_STRUCT_ENC(NAME_TBD, 1, 8),                 /* [1] */
3465                 BTF_MEMBER_ENC(NAME_TBD, 2, 0),
3466                 BTF_PTR_ENC(3),                                 /* [2] */
3467                 BTF_TYPEDEF_ENC(NAME_TBD, 4),                   /* [3] */
3468                 BTF_TYPE_ARRAY_ENC(5, 7, 16),                   /* [4] */
3469                 BTF_TYPE_ARRAY_ENC(6, 7, 8),                    /* [5] */
3470                 BTF_TYPE_ARRAY_ENC(7, 7, 4),                    /* [6] */
3471                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [7] */
3472                 BTF_END_RAW,
3473         },
3474         BTF_STR_SEC("\0s\0a\0arr_t"),
3475         .map_type = BPF_MAP_TYPE_ARRAY,
3476         .map_name = "multi_arr_size_resolve_map",
3477         .key_size = sizeof(int),
3478         .value_size = sizeof(int) * 16 * 8 * 4,
3479         .key_type_id = 7 /* int */,
3480         .value_type_id = 3 /* arr_t */,
3481         .max_entries = 4,
3482 },
3483 /*
3484  * typedef int int_t;
3485  * typedef int_t arr3_t[4];
3486  * typedef arr3_t arr2_t[8];
3487  * typedef arr2_t arr1_t[16];
3488  * struct s {
3489  *      arr1_t *a;
3490  * };
3491  */
3492 {
3493         .descr = "typedef/multi-arr mix size resolution",
3494         .raw_types = {
3495                 BTF_STRUCT_ENC(NAME_TBD, 1, 8),                 /* [1] */
3496                 BTF_MEMBER_ENC(NAME_TBD, 2, 0),
3497                 BTF_PTR_ENC(3),                                 /* [2] */
3498                 BTF_TYPEDEF_ENC(NAME_TBD, 4),                   /* [3] */
3499                 BTF_TYPE_ARRAY_ENC(5, 10, 16),                  /* [4] */
3500                 BTF_TYPEDEF_ENC(NAME_TBD, 6),                   /* [5] */
3501                 BTF_TYPE_ARRAY_ENC(7, 10, 8),                   /* [6] */
3502                 BTF_TYPEDEF_ENC(NAME_TBD, 8),                   /* [7] */
3503                 BTF_TYPE_ARRAY_ENC(9, 10, 4),                   /* [8] */
3504                 BTF_TYPEDEF_ENC(NAME_TBD, 10),                  /* [9] */
3505                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [10] */
3506                 BTF_END_RAW,
3507         },
3508         BTF_STR_SEC("\0s\0a\0arr1_t\0arr2_t\0arr3_t\0int_t"),
3509         .map_type = BPF_MAP_TYPE_ARRAY,
3510         .map_name = "typedef_arra_mix_size_resolve_map",
3511         .key_size = sizeof(int),
3512         .value_size = sizeof(int) * 16 * 8 * 4,
3513         .key_type_id = 10 /* int */,
3514         .value_type_id = 3 /* arr_t */,
3515         .max_entries = 4,
3516 },
3517 /*
3518  * elf .rodata section size 4 and btf .rodata section vlen 0.
3519  */
3520 {
3521         .descr = "datasec: vlen == 0",
3522         .raw_types = {
3523                 /* int */
3524                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
3525                 /* .rodata section */
3526                 BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 0), 4),
3527                                                                  /* [2] */
3528                 BTF_END_RAW,
3529         },
3530         BTF_STR_SEC("\0.rodata"),
3531         .map_type = BPF_MAP_TYPE_ARRAY,
3532         .key_size = sizeof(int),
3533         .value_size = sizeof(int),
3534         .key_type_id = 1,
3535         .value_type_id = 1,
3536         .max_entries = 1,
3537 },
3538
3539 {
3540         .descr = "float test #1, well-formed",
3541         .raw_types = {
3542                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
3543                                                                 /* [1] */
3544                 BTF_TYPE_FLOAT_ENC(NAME_TBD, 2),                /* [2] */
3545                 BTF_TYPE_FLOAT_ENC(NAME_TBD, 4),                /* [3] */
3546                 BTF_TYPE_FLOAT_ENC(NAME_TBD, 8),                /* [4] */
3547                 BTF_TYPE_FLOAT_ENC(NAME_TBD, 12),               /* [5] */
3548                 BTF_TYPE_FLOAT_ENC(NAME_TBD, 16),               /* [6] */
3549                 BTF_STRUCT_ENC(NAME_TBD, 5, 48),                /* [7] */
3550                 BTF_MEMBER_ENC(NAME_TBD, 2, 0),
3551                 BTF_MEMBER_ENC(NAME_TBD, 3, 32),
3552                 BTF_MEMBER_ENC(NAME_TBD, 4, 64),
3553                 BTF_MEMBER_ENC(NAME_TBD, 5, 128),
3554                 BTF_MEMBER_ENC(NAME_TBD, 6, 256),
3555                 BTF_END_RAW,
3556         },
3557         BTF_STR_SEC("\0int\0_Float16\0float\0double\0_Float80\0long_double"
3558                     "\0floats\0a\0b\0c\0d\0e"),
3559         .map_type = BPF_MAP_TYPE_ARRAY,
3560         .map_name = "float_type_check_btf",
3561         .key_size = sizeof(int),
3562         .value_size = 48,
3563         .key_type_id = 1,
3564         .value_type_id = 7,
3565         .max_entries = 1,
3566 },
3567 {
3568         .descr = "float test #2, invalid vlen",
3569         .raw_types = {
3570                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
3571                                                                 /* [1] */
3572                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_FLOAT, 0, 1), 4),
3573                                                                 /* [2] */
3574                 BTF_END_RAW,
3575         },
3576         BTF_STR_SEC("\0int\0float"),
3577         .map_type = BPF_MAP_TYPE_ARRAY,
3578         .map_name = "float_type_check_btf",
3579         .key_size = sizeof(int),
3580         .value_size = 4,
3581         .key_type_id = 1,
3582         .value_type_id = 2,
3583         .max_entries = 1,
3584         .btf_load_err = true,
3585         .err_str = "vlen != 0",
3586 },
3587 {
3588         .descr = "float test #3, invalid kind_flag",
3589         .raw_types = {
3590                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
3591                                                                 /* [1] */
3592                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_FLOAT, 1, 0), 4),
3593                                                                 /* [2] */
3594                 BTF_END_RAW,
3595         },
3596         BTF_STR_SEC("\0int\0float"),
3597         .map_type = BPF_MAP_TYPE_ARRAY,
3598         .map_name = "float_type_check_btf",
3599         .key_size = sizeof(int),
3600         .value_size = 4,
3601         .key_type_id = 1,
3602         .value_type_id = 2,
3603         .max_entries = 1,
3604         .btf_load_err = true,
3605         .err_str = "Invalid btf_info kind_flag",
3606 },
3607 {
3608         .descr = "float test #4, member does not fit",
3609         .raw_types = {
3610                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
3611                                                                 /* [1] */
3612                 BTF_TYPE_FLOAT_ENC(NAME_TBD, 4),                /* [2] */
3613                 BTF_STRUCT_ENC(NAME_TBD, 1, 2),                 /* [3] */
3614                 BTF_MEMBER_ENC(NAME_TBD, 2, 0),
3615                 BTF_END_RAW,
3616         },
3617         BTF_STR_SEC("\0int\0float\0floats\0x"),
3618         .map_type = BPF_MAP_TYPE_ARRAY,
3619         .map_name = "float_type_check_btf",
3620         .key_size = sizeof(int),
3621         .value_size = 4,
3622         .key_type_id = 1,
3623         .value_type_id = 3,
3624         .max_entries = 1,
3625         .btf_load_err = true,
3626         .err_str = "Member exceeds struct_size",
3627 },
3628 {
3629         .descr = "float test #5, member is not properly aligned",
3630         .raw_types = {
3631                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
3632                                                                 /* [1] */
3633                 BTF_TYPE_FLOAT_ENC(NAME_TBD, 4),                /* [2] */
3634                 BTF_STRUCT_ENC(NAME_TBD, 1, 8),                 /* [3] */
3635                 BTF_MEMBER_ENC(NAME_TBD, 2, 8),
3636                 BTF_END_RAW,
3637         },
3638         BTF_STR_SEC("\0int\0float\0floats\0x"),
3639         .map_type = BPF_MAP_TYPE_ARRAY,
3640         .map_name = "float_type_check_btf",
3641         .key_size = sizeof(int),
3642         .value_size = 4,
3643         .key_type_id = 1,
3644         .value_type_id = 3,
3645         .max_entries = 1,
3646         .btf_load_err = true,
3647         .err_str = "Member is not properly aligned",
3648 },
3649 {
3650         .descr = "float test #6, invalid size",
3651         .raw_types = {
3652                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
3653                                                                 /* [1] */
3654                 BTF_TYPE_FLOAT_ENC(NAME_TBD, 6),                /* [2] */
3655                 BTF_END_RAW,
3656         },
3657         BTF_STR_SEC("\0int\0float"),
3658         .map_type = BPF_MAP_TYPE_ARRAY,
3659         .map_name = "float_type_check_btf",
3660         .key_size = sizeof(int),
3661         .value_size = 6,
3662         .key_type_id = 1,
3663         .value_type_id = 2,
3664         .max_entries = 1,
3665         .btf_load_err = true,
3666         .err_str = "Invalid type_size",
3667 },
3668
3669 {
3670         .descr = "decl_tag test #1, struct/member, well-formed",
3671         .raw_types = {
3672                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
3673                 BTF_STRUCT_ENC(0, 2, 8),                        /* [2] */
3674                 BTF_MEMBER_ENC(NAME_TBD, 1, 0),
3675                 BTF_MEMBER_ENC(NAME_TBD, 1, 32),
3676                 BTF_DECL_TAG_ENC(NAME_TBD, 2, -1),
3677                 BTF_DECL_TAG_ENC(NAME_TBD, 2, 0),
3678                 BTF_DECL_TAG_ENC(NAME_TBD, 2, 1),
3679                 BTF_END_RAW,
3680         },
3681         BTF_STR_SEC("\0m1\0m2\0tag1\0tag2\0tag3"),
3682         .map_type = BPF_MAP_TYPE_ARRAY,
3683         .map_name = "tag_type_check_btf",
3684         .key_size = sizeof(int),
3685         .value_size = 8,
3686         .key_type_id = 1,
3687         .value_type_id = 2,
3688         .max_entries = 1,
3689 },
3690 {
3691         .descr = "decl_tag test #2, union/member, well-formed",
3692         .raw_types = {
3693                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
3694                 BTF_UNION_ENC(NAME_TBD, 2, 4),                  /* [2] */
3695                 BTF_MEMBER_ENC(NAME_TBD, 1, 0),
3696                 BTF_MEMBER_ENC(NAME_TBD, 1, 0),
3697                 BTF_DECL_TAG_ENC(NAME_TBD, 2, -1),
3698                 BTF_DECL_TAG_ENC(NAME_TBD, 2, 0),
3699                 BTF_DECL_TAG_ENC(NAME_TBD, 2, 1),
3700                 BTF_END_RAW,
3701         },
3702         BTF_STR_SEC("\0t\0m1\0m2\0tag1\0tag2\0tag3"),
3703         .map_type = BPF_MAP_TYPE_ARRAY,
3704         .map_name = "tag_type_check_btf",
3705         .key_size = sizeof(int),
3706         .value_size = 4,
3707         .key_type_id = 1,
3708         .value_type_id = 2,
3709         .max_entries = 1,
3710 },
3711 {
3712         .descr = "decl_tag test #3, variable, well-formed",
3713         .raw_types = {
3714                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
3715                 BTF_VAR_ENC(NAME_TBD, 1, 0),                    /* [2] */
3716                 BTF_VAR_ENC(NAME_TBD, 1, 1),                    /* [3] */
3717                 BTF_DECL_TAG_ENC(NAME_TBD, 2, -1),
3718                 BTF_DECL_TAG_ENC(NAME_TBD, 3, -1),
3719                 BTF_END_RAW,
3720         },
3721         BTF_STR_SEC("\0local\0global\0tag1\0tag2"),
3722         .map_type = BPF_MAP_TYPE_ARRAY,
3723         .map_name = "tag_type_check_btf",
3724         .key_size = sizeof(int),
3725         .value_size = 4,
3726         .key_type_id = 1,
3727         .value_type_id = 1,
3728         .max_entries = 1,
3729 },
3730 {
3731         .descr = "decl_tag test #4, func/parameter, well-formed",
3732         .raw_types = {
3733                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
3734                 BTF_FUNC_PROTO_ENC(0, 2),                       /* [2] */
3735                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
3736                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
3737                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [3] */
3738                 BTF_DECL_TAG_ENC(NAME_TBD, 3, -1),
3739                 BTF_DECL_TAG_ENC(NAME_TBD, 3, 0),
3740                 BTF_DECL_TAG_ENC(NAME_TBD, 3, 1),
3741                 BTF_END_RAW,
3742         },
3743         BTF_STR_SEC("\0arg1\0arg2\0f\0tag1\0tag2\0tag3"),
3744         .map_type = BPF_MAP_TYPE_ARRAY,
3745         .map_name = "tag_type_check_btf",
3746         .key_size = sizeof(int),
3747         .value_size = 4,
3748         .key_type_id = 1,
3749         .value_type_id = 1,
3750         .max_entries = 1,
3751 },
3752 {
3753         .descr = "decl_tag test #5, invalid value",
3754         .raw_types = {
3755                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
3756                 BTF_VAR_ENC(NAME_TBD, 1, 0),                    /* [2] */
3757                 BTF_DECL_TAG_ENC(0, 2, -1),
3758                 BTF_END_RAW,
3759         },
3760         BTF_STR_SEC("\0local\0tag"),
3761         .map_type = BPF_MAP_TYPE_ARRAY,
3762         .map_name = "tag_type_check_btf",
3763         .key_size = sizeof(int),
3764         .value_size = 4,
3765         .key_type_id = 1,
3766         .value_type_id = 1,
3767         .max_entries = 1,
3768         .btf_load_err = true,
3769         .err_str = "Invalid value",
3770 },
3771 {
3772         .descr = "decl_tag test #6, invalid target type",
3773         .raw_types = {
3774                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
3775                 BTF_DECL_TAG_ENC(NAME_TBD, 1, -1),
3776                 BTF_END_RAW,
3777         },
3778         BTF_STR_SEC("\0tag1"),
3779         .map_type = BPF_MAP_TYPE_ARRAY,
3780         .map_name = "tag_type_check_btf",
3781         .key_size = sizeof(int),
3782         .value_size = 4,
3783         .key_type_id = 1,
3784         .value_type_id = 1,
3785         .max_entries = 1,
3786         .btf_load_err = true,
3787         .err_str = "Invalid type",
3788 },
3789 {
3790         .descr = "decl_tag test #7, invalid vlen",
3791         .raw_types = {
3792                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
3793                 BTF_VAR_ENC(NAME_TBD, 1, 0),                    /* [2] */
3794                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DECL_TAG, 0, 1), 2), (0),
3795                 BTF_END_RAW,
3796         },
3797         BTF_STR_SEC("\0local\0tag1"),
3798         .map_type = BPF_MAP_TYPE_ARRAY,
3799         .map_name = "tag_type_check_btf",
3800         .key_size = sizeof(int),
3801         .value_size = 4,
3802         .key_type_id = 1,
3803         .value_type_id = 1,
3804         .max_entries = 1,
3805         .btf_load_err = true,
3806         .err_str = "vlen != 0",
3807 },
3808 {
3809         .descr = "decl_tag test #8, invalid kflag",
3810         .raw_types = {
3811                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
3812                 BTF_VAR_ENC(NAME_TBD, 1, 0),                    /* [2] */
3813                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DECL_TAG, 1, 0), 2), (-1),
3814                 BTF_END_RAW,
3815         },
3816         BTF_STR_SEC("\0local\0tag1"),
3817         .map_type = BPF_MAP_TYPE_ARRAY,
3818         .map_name = "tag_type_check_btf",
3819         .key_size = sizeof(int),
3820         .value_size = 4,
3821         .key_type_id = 1,
3822         .value_type_id = 1,
3823         .max_entries = 1,
3824         .btf_load_err = true,
3825         .err_str = "Invalid btf_info kind_flag",
3826 },
3827 {
3828         .descr = "decl_tag test #9, var, invalid component_idx",
3829         .raw_types = {
3830                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
3831                 BTF_VAR_ENC(NAME_TBD, 1, 0),                    /* [2] */
3832                 BTF_DECL_TAG_ENC(NAME_TBD, 2, 0),
3833                 BTF_END_RAW,
3834         },
3835         BTF_STR_SEC("\0local\0tag"),
3836         .map_type = BPF_MAP_TYPE_ARRAY,
3837         .map_name = "tag_type_check_btf",
3838         .key_size = sizeof(int),
3839         .value_size = 4,
3840         .key_type_id = 1,
3841         .value_type_id = 1,
3842         .max_entries = 1,
3843         .btf_load_err = true,
3844         .err_str = "Invalid component_idx",
3845 },
3846 {
3847         .descr = "decl_tag test #10, struct member, invalid component_idx",
3848         .raw_types = {
3849                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
3850                 BTF_STRUCT_ENC(0, 2, 8),                        /* [2] */
3851                 BTF_MEMBER_ENC(NAME_TBD, 1, 0),
3852                 BTF_MEMBER_ENC(NAME_TBD, 1, 32),
3853                 BTF_DECL_TAG_ENC(NAME_TBD, 2, 2),
3854                 BTF_END_RAW,
3855         },
3856         BTF_STR_SEC("\0m1\0m2\0tag"),
3857         .map_type = BPF_MAP_TYPE_ARRAY,
3858         .map_name = "tag_type_check_btf",
3859         .key_size = sizeof(int),
3860         .value_size = 8,
3861         .key_type_id = 1,
3862         .value_type_id = 2,
3863         .max_entries = 1,
3864         .btf_load_err = true,
3865         .err_str = "Invalid component_idx",
3866 },
3867 {
3868         .descr = "decl_tag test #11, func parameter, invalid component_idx",
3869         .raw_types = {
3870                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
3871                 BTF_FUNC_PROTO_ENC(0, 2),                       /* [2] */
3872                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
3873                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
3874                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [3] */
3875                 BTF_DECL_TAG_ENC(NAME_TBD, 3, 2),
3876                 BTF_END_RAW,
3877         },
3878         BTF_STR_SEC("\0arg1\0arg2\0f\0tag"),
3879         .map_type = BPF_MAP_TYPE_ARRAY,
3880         .map_name = "tag_type_check_btf",
3881         .key_size = sizeof(int),
3882         .value_size = 4,
3883         .key_type_id = 1,
3884         .value_type_id = 1,
3885         .max_entries = 1,
3886         .btf_load_err = true,
3887         .err_str = "Invalid component_idx",
3888 },
3889 {
3890         .descr = "decl_tag test #12, < -1 component_idx",
3891         .raw_types = {
3892                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
3893                 BTF_FUNC_PROTO_ENC(0, 2),                       /* [2] */
3894                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
3895                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
3896                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [3] */
3897                 BTF_DECL_TAG_ENC(NAME_TBD, 3, -2),
3898                 BTF_END_RAW,
3899         },
3900         BTF_STR_SEC("\0arg1\0arg2\0f\0tag"),
3901         .map_type = BPF_MAP_TYPE_ARRAY,
3902         .map_name = "tag_type_check_btf",
3903         .key_size = sizeof(int),
3904         .value_size = 4,
3905         .key_type_id = 1,
3906         .value_type_id = 1,
3907         .max_entries = 1,
3908         .btf_load_err = true,
3909         .err_str = "Invalid component_idx",
3910 },
3911 {
3912         .descr = "decl_tag test #13, typedef, well-formed",
3913         .raw_types = {
3914                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
3915                 BTF_TYPEDEF_ENC(NAME_TBD, 1),                   /* [2] */
3916                 BTF_DECL_TAG_ENC(NAME_TBD, 2, -1),
3917                 BTF_END_RAW,
3918         },
3919         BTF_STR_SEC("\0t\0tag"),
3920         .map_type = BPF_MAP_TYPE_ARRAY,
3921         .map_name = "tag_type_check_btf",
3922         .key_size = sizeof(int),
3923         .value_size = 4,
3924         .key_type_id = 1,
3925         .value_type_id = 1,
3926         .max_entries = 1,
3927 },
3928 {
3929         .descr = "decl_tag test #14, typedef, invalid component_idx",
3930         .raw_types = {
3931                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
3932                 BTF_TYPEDEF_ENC(NAME_TBD, 1),                   /* [2] */
3933                 BTF_DECL_TAG_ENC(NAME_TBD, 2, 0),
3934                 BTF_END_RAW,
3935         },
3936         BTF_STR_SEC("\0local\0tag"),
3937         .map_type = BPF_MAP_TYPE_ARRAY,
3938         .map_name = "tag_type_check_btf",
3939         .key_size = sizeof(int),
3940         .value_size = 4,
3941         .key_type_id = 1,
3942         .value_type_id = 1,
3943         .max_entries = 1,
3944         .btf_load_err = true,
3945         .err_str = "Invalid component_idx",
3946 },
3947 {
3948         .descr = "decl_tag test #15, func, invalid func proto",
3949         .raw_types = {
3950                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
3951                 BTF_DECL_TAG_ENC(NAME_TBD, 3, 0),               /* [2] */
3952                 BTF_FUNC_ENC(NAME_TBD, 8),                      /* [3] */
3953                 BTF_END_RAW,
3954         },
3955         BTF_STR_SEC("\0tag\0func"),
3956         .map_type = BPF_MAP_TYPE_ARRAY,
3957         .map_name = "tag_type_check_btf",
3958         .key_size = sizeof(int),
3959         .value_size = 4,
3960         .key_type_id = 1,
3961         .value_type_id = 1,
3962         .max_entries = 1,
3963         .btf_load_err = true,
3964         .err_str = "Invalid type_id",
3965 },
3966 {
3967         .descr = "decl_tag test #16, func proto, return type",
3968         .raw_types = {
3969                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                          /* [1] */
3970                 BTF_VAR_ENC(NAME_TBD, 1, 0),                                            /* [2] */
3971                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DECL_TAG, 0, 0), 2), (-1), /* [3] */
3972                 BTF_FUNC_PROTO_ENC(3, 0),                                               /* [4] */
3973                 BTF_END_RAW,
3974         },
3975         BTF_STR_SEC("\0local\0tag1"),
3976         .btf_load_err = true,
3977         .err_str = "Invalid return type",
3978 },
3979 {
3980         .descr = "decl_tag test #17, func proto, argument",
3981         .raw_types = {
3982                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_DECL_TAG, 0, 0), 4), (-1), /* [1] */
3983                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_PTR, 0, 0), 0), /* [2] */
3984                 BTF_FUNC_PROTO_ENC(0, 1),                       /* [3] */
3985                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
3986                 BTF_VAR_ENC(NAME_TBD, 2, 0),                    /* [4] */
3987                 BTF_END_RAW,
3988         },
3989         BTF_STR_SEC("\0local\0tag1\0var"),
3990         .btf_load_err = true,
3991         .err_str = "Invalid arg#1",
3992 },
3993 {
3994         .descr = "decl_tag test #18, decl_tag as the map key type",
3995         .raw_types = {
3996                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
3997                 BTF_STRUCT_ENC(0, 2, 8),                        /* [2] */
3998                 BTF_MEMBER_ENC(NAME_TBD, 1, 0),
3999                 BTF_MEMBER_ENC(NAME_TBD, 1, 32),
4000                 BTF_DECL_TAG_ENC(NAME_TBD, 2, -1),              /* [3] */
4001                 BTF_END_RAW,
4002         },
4003         BTF_STR_SEC("\0m1\0m2\0tag"),
4004         .map_type = BPF_MAP_TYPE_HASH,
4005         .map_name = "tag_type_check_btf",
4006         .key_size = 8,
4007         .value_size = 4,
4008         .key_type_id = 3,
4009         .value_type_id = 1,
4010         .max_entries = 1,
4011         .map_create_err = true,
4012 },
4013 {
4014         .descr = "decl_tag test #19, decl_tag as the map value type",
4015         .raw_types = {
4016                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
4017                 BTF_STRUCT_ENC(0, 2, 8),                        /* [2] */
4018                 BTF_MEMBER_ENC(NAME_TBD, 1, 0),
4019                 BTF_MEMBER_ENC(NAME_TBD, 1, 32),
4020                 BTF_DECL_TAG_ENC(NAME_TBD, 2, -1),              /* [3] */
4021                 BTF_END_RAW,
4022         },
4023         BTF_STR_SEC("\0m1\0m2\0tag"),
4024         .map_type = BPF_MAP_TYPE_HASH,
4025         .map_name = "tag_type_check_btf",
4026         .key_size = 4,
4027         .value_size = 8,
4028         .key_type_id = 1,
4029         .value_type_id = 3,
4030         .max_entries = 1,
4031         .map_create_err = true,
4032 },
4033 {
4034         .descr = "type_tag test #1",
4035         .raw_types = {
4036                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
4037                 BTF_TYPE_TAG_ENC(NAME_TBD, 1),                  /* [2] */
4038                 BTF_PTR_ENC(2),                                 /* [3] */
4039                 BTF_END_RAW,
4040         },
4041         BTF_STR_SEC("\0tag"),
4042         .map_type = BPF_MAP_TYPE_ARRAY,
4043         .map_name = "tag_type_check_btf",
4044         .key_size = sizeof(int),
4045         .value_size = 4,
4046         .key_type_id = 1,
4047         .value_type_id = 1,
4048         .max_entries = 1,
4049 },
4050 {
4051         .descr = "type_tag test #2, type tag order",
4052         .raw_types = {
4053                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
4054                 BTF_CONST_ENC(3),                               /* [2] */
4055                 BTF_TYPE_TAG_ENC(NAME_TBD, 1),                  /* [3] */
4056                 BTF_END_RAW,
4057         },
4058         BTF_STR_SEC("\0tag"),
4059         .map_type = BPF_MAP_TYPE_ARRAY,
4060         .map_name = "tag_type_check_btf",
4061         .key_size = sizeof(int),
4062         .value_size = 4,
4063         .key_type_id = 1,
4064         .value_type_id = 1,
4065         .max_entries = 1,
4066         .btf_load_err = true,
4067         .err_str = "Type tags don't precede modifiers",
4068 },
4069 {
4070         .descr = "type_tag test #3, type tag order",
4071         .raw_types = {
4072                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
4073                 BTF_TYPE_TAG_ENC(NAME_TBD, 3),                  /* [2] */
4074                 BTF_CONST_ENC(4),                               /* [3] */
4075                 BTF_TYPE_TAG_ENC(NAME_TBD, 1),                  /* [4] */
4076                 BTF_END_RAW,
4077         },
4078         BTF_STR_SEC("\0tag\0tag"),
4079         .map_type = BPF_MAP_TYPE_ARRAY,
4080         .map_name = "tag_type_check_btf",
4081         .key_size = sizeof(int),
4082         .value_size = 4,
4083         .key_type_id = 1,
4084         .value_type_id = 1,
4085         .max_entries = 1,
4086         .btf_load_err = true,
4087         .err_str = "Type tags don't precede modifiers",
4088 },
4089 {
4090         .descr = "type_tag test #4, type tag order",
4091         .raw_types = {
4092                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
4093                 BTF_TYPEDEF_ENC(NAME_TBD, 3),                   /* [2] */
4094                 BTF_CONST_ENC(4),                               /* [3] */
4095                 BTF_TYPE_TAG_ENC(NAME_TBD, 1),                  /* [4] */
4096                 BTF_END_RAW,
4097         },
4098         BTF_STR_SEC("\0tag\0tag"),
4099         .map_type = BPF_MAP_TYPE_ARRAY,
4100         .map_name = "tag_type_check_btf",
4101         .key_size = sizeof(int),
4102         .value_size = 4,
4103         .key_type_id = 1,
4104         .value_type_id = 1,
4105         .max_entries = 1,
4106         .btf_load_err = true,
4107         .err_str = "Type tags don't precede modifiers",
4108 },
4109 {
4110         .descr = "type_tag test #5, type tag order",
4111         .raw_types = {
4112                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
4113                 BTF_TYPE_TAG_ENC(NAME_TBD, 3),                  /* [2] */
4114                 BTF_CONST_ENC(1),                               /* [3] */
4115                 BTF_TYPE_TAG_ENC(NAME_TBD, 2),                  /* [4] */
4116                 BTF_END_RAW,
4117         },
4118         BTF_STR_SEC("\0tag\0tag"),
4119         .map_type = BPF_MAP_TYPE_ARRAY,
4120         .map_name = "tag_type_check_btf",
4121         .key_size = sizeof(int),
4122         .value_size = 4,
4123         .key_type_id = 1,
4124         .value_type_id = 1,
4125         .max_entries = 1,
4126 },
4127 {
4128         .descr = "type_tag test #6, type tag order",
4129         .raw_types = {
4130                 BTF_PTR_ENC(2),                                 /* [1] */
4131                 BTF_TYPE_TAG_ENC(NAME_TBD, 3),                  /* [2] */
4132                 BTF_CONST_ENC(4),                               /* [3] */
4133                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [4] */
4134                 BTF_PTR_ENC(6),                                 /* [5] */
4135                 BTF_CONST_ENC(2),                               /* [6] */
4136                 BTF_END_RAW,
4137         },
4138         BTF_STR_SEC("\0tag"),
4139         .map_type = BPF_MAP_TYPE_ARRAY,
4140         .map_name = "tag_type_check_btf",
4141         .key_size = sizeof(int),
4142         .value_size = 4,
4143         .key_type_id = 1,
4144         .value_type_id = 1,
4145         .max_entries = 1,
4146         .btf_load_err = true,
4147         .err_str = "Type tags don't precede modifiers",
4148 },
4149 {
4150         .descr = "enum64 test #1, unsigned, size 8",
4151         .raw_types = {
4152                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [1] */
4153                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 2), 8), /* [2] */
4154                 BTF_ENUM64_ENC(NAME_TBD, 0, 0),
4155                 BTF_ENUM64_ENC(NAME_TBD, 1, 1),
4156                 BTF_END_RAW,
4157         },
4158         BTF_STR_SEC("\0a\0b\0c"),
4159         .map_type = BPF_MAP_TYPE_ARRAY,
4160         .map_name = "tag_type_check_btf",
4161         .key_size = sizeof(int),
4162         .value_size = 8,
4163         .key_type_id = 1,
4164         .value_type_id = 2,
4165         .max_entries = 1,
4166 },
4167 {
4168         .descr = "enum64 test #2, signed, size 4",
4169         .raw_types = {
4170                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                  /* [1] */
4171                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_ENUM64, 1, 2), 4), /* [2] */
4172                 BTF_ENUM64_ENC(NAME_TBD, -1, 0),
4173                 BTF_ENUM64_ENC(NAME_TBD, 1, 0),
4174                 BTF_END_RAW,
4175         },
4176         BTF_STR_SEC("\0a\0b\0c"),
4177         .map_type = BPF_MAP_TYPE_ARRAY,
4178         .map_name = "tag_type_check_btf",
4179         .key_size = sizeof(int),
4180         .value_size = 4,
4181         .key_type_id = 1,
4182         .value_type_id = 2,
4183         .max_entries = 1,
4184 },
4185
4186 }; /* struct btf_raw_test raw_tests[] */
4187
4188 static const char *get_next_str(const char *start, const char *end)
4189 {
4190         return start < end - 1 ? start + 1 : NULL;
4191 }
4192
4193 static int get_raw_sec_size(const __u32 *raw_types)
4194 {
4195         int i;
4196
4197         for (i = MAX_NR_RAW_U32 - 1;
4198              i >= 0 && raw_types[i] != BTF_END_RAW;
4199              i--)
4200                 ;
4201
4202         return i < 0 ? i : i * sizeof(raw_types[0]);
4203 }
4204
4205 static void *btf_raw_create(const struct btf_header *hdr,
4206                             const __u32 *raw_types,
4207                             const char *str,
4208                             unsigned int str_sec_size,
4209                             unsigned int *btf_size,
4210                             const char **ret_next_str)
4211 {
4212         const char *next_str = str, *end_str = str + str_sec_size;
4213         const char **strs_idx = NULL, **tmp_strs_idx;
4214         int strs_cap = 0, strs_cnt = 0, next_str_idx = 0;
4215         unsigned int size_needed, offset;
4216         struct btf_header *ret_hdr;
4217         int i, type_sec_size, err = 0;
4218         uint32_t *ret_types;
4219         void *raw_btf = NULL;
4220
4221         type_sec_size = get_raw_sec_size(raw_types);
4222         if (CHECK(type_sec_size < 0, "Cannot get nr_raw_types"))
4223                 return NULL;
4224
4225         size_needed = sizeof(*hdr) + type_sec_size + str_sec_size;
4226         raw_btf = malloc(size_needed);
4227         if (CHECK(!raw_btf, "Cannot allocate memory for raw_btf"))
4228                 return NULL;
4229
4230         /* Copy header */
4231         memcpy(raw_btf, hdr, sizeof(*hdr));
4232         offset = sizeof(*hdr);
4233
4234         /* Index strings */
4235         while ((next_str = get_next_str(next_str, end_str))) {
4236                 if (strs_cnt == strs_cap) {
4237                         strs_cap += max(16, strs_cap / 2);
4238                         tmp_strs_idx = realloc(strs_idx,
4239                                                sizeof(*strs_idx) * strs_cap);
4240                         if (CHECK(!tmp_strs_idx,
4241                                   "Cannot allocate memory for strs_idx")) {
4242                                 err = -1;
4243                                 goto done;
4244                         }
4245                         strs_idx = tmp_strs_idx;
4246                 }
4247                 strs_idx[strs_cnt++] = next_str;
4248                 next_str += strlen(next_str);
4249         }
4250
4251         /* Copy type section */
4252         ret_types = raw_btf + offset;
4253         for (i = 0; i < type_sec_size / sizeof(raw_types[0]); i++) {
4254                 if (raw_types[i] == NAME_TBD) {
4255                         if (CHECK(next_str_idx == strs_cnt,
4256                                   "Error in getting next_str #%d",
4257                                   next_str_idx)) {
4258                                 err = -1;
4259                                 goto done;
4260                         }
4261                         ret_types[i] = strs_idx[next_str_idx++] - str;
4262                 } else if (IS_NAME_NTH(raw_types[i])) {
4263                         int idx = GET_NAME_NTH_IDX(raw_types[i]);
4264
4265                         if (CHECK(idx <= 0 || idx > strs_cnt,
4266                                   "Error getting string #%d, strs_cnt:%d",
4267                                   idx, strs_cnt)) {
4268                                 err = -1;
4269                                 goto done;
4270                         }
4271                         ret_types[i] = strs_idx[idx-1] - str;
4272                 } else {
4273                         ret_types[i] = raw_types[i];
4274                 }
4275         }
4276         offset += type_sec_size;
4277
4278         /* Copy string section */
4279         memcpy(raw_btf + offset, str, str_sec_size);
4280
4281         ret_hdr = (struct btf_header *)raw_btf;
4282         ret_hdr->type_len = type_sec_size;
4283         ret_hdr->str_off = type_sec_size;
4284         ret_hdr->str_len = str_sec_size;
4285
4286         *btf_size = size_needed;
4287         if (ret_next_str)
4288                 *ret_next_str =
4289                         next_str_idx < strs_cnt ? strs_idx[next_str_idx] : NULL;
4290
4291 done:
4292         free(strs_idx);
4293         if (err) {
4294                 free(raw_btf);
4295                 return NULL;
4296         }
4297         return raw_btf;
4298 }
4299
4300 static int load_raw_btf(const void *raw_data, size_t raw_size)
4301 {
4302         LIBBPF_OPTS(bpf_btf_load_opts, opts);
4303         int btf_fd;
4304
4305         if (always_log) {
4306                 opts.log_buf = btf_log_buf,
4307                 opts.log_size = BTF_LOG_BUF_SIZE,
4308                 opts.log_level = 1;
4309         }
4310
4311         btf_fd = bpf_btf_load(raw_data, raw_size, &opts);
4312         if (btf_fd < 0 && !always_log) {
4313                 opts.log_buf = btf_log_buf,
4314                 opts.log_size = BTF_LOG_BUF_SIZE,
4315                 opts.log_level = 1;
4316                 btf_fd = bpf_btf_load(raw_data, raw_size, &opts);
4317         }
4318
4319         return btf_fd;
4320 }
4321
4322 static void do_test_raw(unsigned int test_num)
4323 {
4324         struct btf_raw_test *test = &raw_tests[test_num - 1];
4325         LIBBPF_OPTS(bpf_map_create_opts, opts);
4326         int map_fd = -1, btf_fd = -1;
4327         unsigned int raw_btf_size;
4328         struct btf_header *hdr;
4329         void *raw_btf;
4330         int err;
4331
4332         if (!test__start_subtest(test->descr))
4333                 return;
4334
4335         raw_btf = btf_raw_create(&hdr_tmpl,
4336                                  test->raw_types,
4337                                  test->str_sec,
4338                                  test->str_sec_size,
4339                                  &raw_btf_size, NULL);
4340         if (!raw_btf)
4341                 return;
4342
4343         hdr = raw_btf;
4344
4345         hdr->hdr_len = (int)hdr->hdr_len + test->hdr_len_delta;
4346         hdr->type_off = (int)hdr->type_off + test->type_off_delta;
4347         hdr->str_off = (int)hdr->str_off + test->str_off_delta;
4348         hdr->str_len = (int)hdr->str_len + test->str_len_delta;
4349
4350         *btf_log_buf = '\0';
4351         btf_fd = load_raw_btf(raw_btf, raw_btf_size);
4352         free(raw_btf);
4353
4354         err = ((btf_fd < 0) != test->btf_load_err);
4355         if (CHECK(err, "btf_fd:%d test->btf_load_err:%u",
4356                   btf_fd, test->btf_load_err) ||
4357             CHECK(test->err_str && !strstr(btf_log_buf, test->err_str),
4358                   "expected err_str:%s\n", test->err_str)) {
4359                 err = -1;
4360                 goto done;
4361         }
4362
4363         if (err || btf_fd < 0)
4364                 goto done;
4365
4366         opts.btf_fd = btf_fd;
4367         opts.btf_key_type_id = test->key_type_id;
4368         opts.btf_value_type_id = test->value_type_id;
4369         map_fd = bpf_map_create(test->map_type, test->map_name,
4370                                 test->key_size, test->value_size, test->max_entries, &opts);
4371
4372         err = ((map_fd < 0) != test->map_create_err);
4373         CHECK(err, "map_fd:%d test->map_create_err:%u",
4374               map_fd, test->map_create_err);
4375
4376 done:
4377         if (*btf_log_buf && (err || always_log))
4378                 fprintf(stderr, "\n%s", btf_log_buf);
4379         if (btf_fd >= 0)
4380                 close(btf_fd);
4381         if (map_fd >= 0)
4382                 close(map_fd);
4383 }
4384
4385 struct btf_get_info_test {
4386         const char *descr;
4387         const char *str_sec;
4388         __u32 raw_types[MAX_NR_RAW_U32];
4389         __u32 str_sec_size;
4390         int btf_size_delta;
4391         int (*special_test)(unsigned int test_num);
4392 };
4393
4394 static int test_big_btf_info(unsigned int test_num);
4395 static int test_btf_id(unsigned int test_num);
4396
4397 const struct btf_get_info_test get_info_tests[] = {
4398 {
4399         .descr = "== raw_btf_size+1",
4400         .raw_types = {
4401                 /* int */                               /* [1] */
4402                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
4403                 BTF_END_RAW,
4404         },
4405         .str_sec = "",
4406         .str_sec_size = sizeof(""),
4407         .btf_size_delta = 1,
4408 },
4409 {
4410         .descr = "== raw_btf_size-3",
4411         .raw_types = {
4412                 /* int */                               /* [1] */
4413                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
4414                 BTF_END_RAW,
4415         },
4416         .str_sec = "",
4417         .str_sec_size = sizeof(""),
4418         .btf_size_delta = -3,
4419 },
4420 {
4421         .descr = "Large bpf_btf_info",
4422         .raw_types = {
4423                 /* int */                               /* [1] */
4424                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
4425                 BTF_END_RAW,
4426         },
4427         .str_sec = "",
4428         .str_sec_size = sizeof(""),
4429         .special_test = test_big_btf_info,
4430 },
4431 {
4432         .descr = "BTF ID",
4433         .raw_types = {
4434                 /* int */                               /* [1] */
4435                 BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),
4436                 /* unsigned int */                      /* [2] */
4437                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),
4438                 BTF_END_RAW,
4439         },
4440         .str_sec = "",
4441         .str_sec_size = sizeof(""),
4442         .special_test = test_btf_id,
4443 },
4444 };
4445
4446 static int test_big_btf_info(unsigned int test_num)
4447 {
4448         const struct btf_get_info_test *test = &get_info_tests[test_num - 1];
4449         uint8_t *raw_btf = NULL, *user_btf = NULL;
4450         unsigned int raw_btf_size;
4451         struct {
4452                 struct bpf_btf_info info;
4453                 uint64_t garbage;
4454         } info_garbage;
4455         struct bpf_btf_info *info;
4456         int btf_fd = -1, err;
4457         uint32_t info_len;
4458
4459         raw_btf = btf_raw_create(&hdr_tmpl,
4460                                  test->raw_types,
4461                                  test->str_sec,
4462                                  test->str_sec_size,
4463                                  &raw_btf_size, NULL);
4464
4465         if (!raw_btf)
4466                 return -1;
4467
4468         *btf_log_buf = '\0';
4469
4470         user_btf = malloc(raw_btf_size);
4471         if (CHECK(!user_btf, "!user_btf")) {
4472                 err = -1;
4473                 goto done;
4474         }
4475
4476         btf_fd = load_raw_btf(raw_btf, raw_btf_size);
4477         if (CHECK(btf_fd < 0, "errno:%d", errno)) {
4478                 err = -1;
4479                 goto done;
4480         }
4481
4482         /*
4483          * GET_INFO should error out if the userspace info
4484          * has non zero tailing bytes.
4485          */
4486         info = &info_garbage.info;
4487         memset(info, 0, sizeof(*info));
4488         info_garbage.garbage = 0xdeadbeef;
4489         info_len = sizeof(info_garbage);
4490         info->btf = ptr_to_u64(user_btf);
4491         info->btf_size = raw_btf_size;
4492
4493         err = bpf_btf_get_info_by_fd(btf_fd, info, &info_len);
4494         if (CHECK(!err, "!err")) {
4495                 err = -1;
4496                 goto done;
4497         }
4498
4499         /*
4500          * GET_INFO should succeed even info_len is larger than
4501          * the kernel supported as long as tailing bytes are zero.
4502          * The kernel supported info len should also be returned
4503          * to userspace.
4504          */
4505         info_garbage.garbage = 0;
4506         err = bpf_btf_get_info_by_fd(btf_fd, info, &info_len);
4507         if (CHECK(err || info_len != sizeof(*info),
4508                   "err:%d errno:%d info_len:%u sizeof(*info):%zu",
4509                   err, errno, info_len, sizeof(*info))) {
4510                 err = -1;
4511                 goto done;
4512         }
4513
4514         fprintf(stderr, "OK");
4515
4516 done:
4517         if (*btf_log_buf && (err || always_log))
4518                 fprintf(stderr, "\n%s", btf_log_buf);
4519
4520         free(raw_btf);
4521         free(user_btf);
4522
4523         if (btf_fd >= 0)
4524                 close(btf_fd);
4525
4526         return err;
4527 }
4528
4529 static int test_btf_id(unsigned int test_num)
4530 {
4531         const struct btf_get_info_test *test = &get_info_tests[test_num - 1];
4532         LIBBPF_OPTS(bpf_map_create_opts, opts);
4533         uint8_t *raw_btf = NULL, *user_btf[2] = {};
4534         int btf_fd[2] = {-1, -1}, map_fd = -1;
4535         struct bpf_map_info map_info = {};
4536         struct bpf_btf_info info[2] = {};
4537         unsigned int raw_btf_size;
4538         uint32_t info_len;
4539         int err, i, ret;
4540
4541         raw_btf = btf_raw_create(&hdr_tmpl,
4542                                  test->raw_types,
4543                                  test->str_sec,
4544                                  test->str_sec_size,
4545                                  &raw_btf_size, NULL);
4546
4547         if (!raw_btf)
4548                 return -1;
4549
4550         *btf_log_buf = '\0';
4551
4552         for (i = 0; i < 2; i++) {
4553                 user_btf[i] = malloc(raw_btf_size);
4554                 if (CHECK(!user_btf[i], "!user_btf[%d]", i)) {
4555                         err = -1;
4556                         goto done;
4557                 }
4558                 info[i].btf = ptr_to_u64(user_btf[i]);
4559                 info[i].btf_size = raw_btf_size;
4560         }
4561
4562         btf_fd[0] = load_raw_btf(raw_btf, raw_btf_size);
4563         if (CHECK(btf_fd[0] < 0, "errno:%d", errno)) {
4564                 err = -1;
4565                 goto done;
4566         }
4567
4568         /* Test BPF_OBJ_GET_INFO_BY_ID on btf_id */
4569         info_len = sizeof(info[0]);
4570         err = bpf_btf_get_info_by_fd(btf_fd[0], &info[0], &info_len);
4571         if (CHECK(err, "errno:%d", errno)) {
4572                 err = -1;
4573                 goto done;
4574         }
4575
4576         btf_fd[1] = bpf_btf_get_fd_by_id(info[0].id);
4577         if (CHECK(btf_fd[1] < 0, "errno:%d", errno)) {
4578                 err = -1;
4579                 goto done;
4580         }
4581
4582         ret = 0;
4583         err = bpf_btf_get_info_by_fd(btf_fd[1], &info[1], &info_len);
4584         if (CHECK(err || info[0].id != info[1].id ||
4585                   info[0].btf_size != info[1].btf_size ||
4586                   (ret = memcmp(user_btf[0], user_btf[1], info[0].btf_size)),
4587                   "err:%d errno:%d id0:%u id1:%u btf_size0:%u btf_size1:%u memcmp:%d",
4588                   err, errno, info[0].id, info[1].id,
4589                   info[0].btf_size, info[1].btf_size, ret)) {
4590                 err = -1;
4591                 goto done;
4592         }
4593
4594         /* Test btf members in struct bpf_map_info */
4595         opts.btf_fd = btf_fd[0];
4596         opts.btf_key_type_id = 1;
4597         opts.btf_value_type_id = 2;
4598         map_fd = bpf_map_create(BPF_MAP_TYPE_ARRAY, "test_btf_id",
4599                                 sizeof(int), sizeof(int), 4, &opts);
4600         if (CHECK(map_fd < 0, "errno:%d", errno)) {
4601                 err = -1;
4602                 goto done;
4603         }
4604
4605         info_len = sizeof(map_info);
4606         err = bpf_map_get_info_by_fd(map_fd, &map_info, &info_len);
4607         if (CHECK(err || map_info.btf_id != info[0].id ||
4608                   map_info.btf_key_type_id != 1 || map_info.btf_value_type_id != 2,
4609                   "err:%d errno:%d info.id:%u btf_id:%u btf_key_type_id:%u btf_value_type_id:%u",
4610                   err, errno, info[0].id, map_info.btf_id, map_info.btf_key_type_id,
4611                   map_info.btf_value_type_id)) {
4612                 err = -1;
4613                 goto done;
4614         }
4615
4616         for (i = 0; i < 2; i++) {
4617                 close(btf_fd[i]);
4618                 btf_fd[i] = -1;
4619         }
4620
4621         /* Test BTF ID is removed from the kernel */
4622         btf_fd[0] = bpf_btf_get_fd_by_id(map_info.btf_id);
4623         if (CHECK(btf_fd[0] < 0, "errno:%d", errno)) {
4624                 err = -1;
4625                 goto done;
4626         }
4627         close(btf_fd[0]);
4628         btf_fd[0] = -1;
4629
4630         /* The map holds the last ref to BTF and its btf_id */
4631         close(map_fd);
4632         map_fd = -1;
4633         btf_fd[0] = bpf_btf_get_fd_by_id(map_info.btf_id);
4634         if (CHECK(btf_fd[0] >= 0, "BTF lingers")) {
4635                 err = -1;
4636                 goto done;
4637         }
4638
4639         fprintf(stderr, "OK");
4640
4641 done:
4642         if (*btf_log_buf && (err || always_log))
4643                 fprintf(stderr, "\n%s", btf_log_buf);
4644
4645         free(raw_btf);
4646         if (map_fd >= 0)
4647                 close(map_fd);
4648         for (i = 0; i < 2; i++) {
4649                 free(user_btf[i]);
4650                 if (btf_fd[i] >= 0)
4651                         close(btf_fd[i]);
4652         }
4653
4654         return err;
4655 }
4656
4657 static void do_test_get_info(unsigned int test_num)
4658 {
4659         const struct btf_get_info_test *test = &get_info_tests[test_num - 1];
4660         unsigned int raw_btf_size, user_btf_size, expected_nbytes;
4661         uint8_t *raw_btf = NULL, *user_btf = NULL;
4662         struct bpf_btf_info info = {};
4663         int btf_fd = -1, err, ret;
4664         uint32_t info_len;
4665
4666         if (!test__start_subtest(test->descr))
4667                 return;
4668
4669         if (test->special_test) {
4670                 err = test->special_test(test_num);
4671                 if (CHECK(err, "failed: %d\n", err))
4672                         return;
4673         }
4674
4675         raw_btf = btf_raw_create(&hdr_tmpl,
4676                                  test->raw_types,
4677                                  test->str_sec,
4678                                  test->str_sec_size,
4679                                  &raw_btf_size, NULL);
4680
4681         if (!raw_btf)
4682                 return;
4683
4684         *btf_log_buf = '\0';
4685
4686         user_btf = malloc(raw_btf_size);
4687         if (CHECK(!user_btf, "!user_btf")) {
4688                 err = -1;
4689                 goto done;
4690         }
4691
4692         btf_fd = load_raw_btf(raw_btf, raw_btf_size);
4693         if (CHECK(btf_fd <= 0, "errno:%d", errno)) {
4694                 err = -1;
4695                 goto done;
4696         }
4697
4698         user_btf_size = (int)raw_btf_size + test->btf_size_delta;
4699         expected_nbytes = min(raw_btf_size, user_btf_size);
4700         if (raw_btf_size > expected_nbytes)
4701                 memset(user_btf + expected_nbytes, 0xff,
4702                        raw_btf_size - expected_nbytes);
4703
4704         info_len = sizeof(info);
4705         info.btf = ptr_to_u64(user_btf);
4706         info.btf_size = user_btf_size;
4707
4708         ret = 0;
4709         err = bpf_btf_get_info_by_fd(btf_fd, &info, &info_len);
4710         if (CHECK(err || !info.id || info_len != sizeof(info) ||
4711                   info.btf_size != raw_btf_size ||
4712                   (ret = memcmp(raw_btf, user_btf, expected_nbytes)),
4713                   "err:%d errno:%d info.id:%u info_len:%u sizeof(info):%zu raw_btf_size:%u info.btf_size:%u expected_nbytes:%u memcmp:%d",
4714                   err, errno, info.id, info_len, sizeof(info),
4715                   raw_btf_size, info.btf_size, expected_nbytes, ret)) {
4716                 err = -1;
4717                 goto done;
4718         }
4719
4720         while (expected_nbytes < raw_btf_size) {
4721                 fprintf(stderr, "%u...", expected_nbytes);
4722                 if (CHECK(user_btf[expected_nbytes++] != 0xff,
4723                           "user_btf[%u]:%x != 0xff", expected_nbytes - 1,
4724                           user_btf[expected_nbytes - 1])) {
4725                         err = -1;
4726                         goto done;
4727                 }
4728         }
4729
4730         fprintf(stderr, "OK");
4731
4732 done:
4733         if (*btf_log_buf && (err || always_log))
4734                 fprintf(stderr, "\n%s", btf_log_buf);
4735
4736         free(raw_btf);
4737         free(user_btf);
4738
4739         if (btf_fd >= 0)
4740                 close(btf_fd);
4741 }
4742
4743 struct btf_file_test {
4744         const char *file;
4745         bool btf_kv_notfound;
4746 };
4747
4748 static struct btf_file_test file_tests[] = {
4749         { .file = "test_btf_newkv.bpf.o", },
4750         { .file = "test_btf_nokv.bpf.o", .btf_kv_notfound = true, },
4751 };
4752
4753 static void do_test_file(unsigned int test_num)
4754 {
4755         const struct btf_file_test *test = &file_tests[test_num - 1];
4756         const char *expected_fnames[] = {"_dummy_tracepoint",
4757                                          "test_long_fname_1",
4758                                          "test_long_fname_2"};
4759         struct btf_ext *btf_ext = NULL;
4760         struct bpf_prog_info info = {};
4761         struct bpf_object *obj = NULL;
4762         struct bpf_func_info *finfo;
4763         struct bpf_program *prog;
4764         __u32 info_len, rec_size;
4765         bool has_btf_ext = false;
4766         struct btf *btf = NULL;
4767         void *func_info = NULL;
4768         struct bpf_map *map;
4769         int i, err, prog_fd;
4770
4771         if (!test__start_subtest(test->file))
4772                 return;
4773
4774         btf = btf__parse_elf(test->file, &btf_ext);
4775         err = libbpf_get_error(btf);
4776         if (err) {
4777                 if (err == -ENOENT) {
4778                         printf("%s:SKIP: No ELF %s found", __func__, BTF_ELF_SEC);
4779                         test__skip();
4780                         return;
4781                 }
4782                 return;
4783         }
4784         btf__free(btf);
4785
4786         has_btf_ext = btf_ext != NULL;
4787         btf_ext__free(btf_ext);
4788
4789         /* temporary disable LIBBPF_STRICT_MAP_DEFINITIONS to test legacy maps */
4790         libbpf_set_strict_mode(LIBBPF_STRICT_ALL & ~LIBBPF_STRICT_MAP_DEFINITIONS);
4791         obj = bpf_object__open(test->file);
4792         err = libbpf_get_error(obj);
4793         if (CHECK(err, "obj: %d", err))
4794                 return;
4795
4796         prog = bpf_object__next_program(obj, NULL);
4797         if (CHECK(!prog, "Cannot find bpf_prog")) {
4798                 err = -1;
4799                 goto done;
4800         }
4801
4802         bpf_program__set_type(prog, BPF_PROG_TYPE_TRACEPOINT);
4803         err = bpf_object__load(obj);
4804         if (CHECK(err < 0, "bpf_object__load: %d", err))
4805                 goto done;
4806         prog_fd = bpf_program__fd(prog);
4807
4808         map = bpf_object__find_map_by_name(obj, "btf_map");
4809         if (CHECK(!map, "btf_map not found")) {
4810                 err = -1;
4811                 goto done;
4812         }
4813
4814         err = (bpf_map__btf_key_type_id(map) == 0 || bpf_map__btf_value_type_id(map) == 0)
4815                 != test->btf_kv_notfound;
4816         if (CHECK(err, "btf_key_type_id:%u btf_value_type_id:%u test->btf_kv_notfound:%u",
4817                   bpf_map__btf_key_type_id(map), bpf_map__btf_value_type_id(map),
4818                   test->btf_kv_notfound))
4819                 goto done;
4820
4821         if (!has_btf_ext)
4822                 goto skip;
4823
4824         /* get necessary program info */
4825         info_len = sizeof(struct bpf_prog_info);
4826         err = bpf_prog_get_info_by_fd(prog_fd, &info, &info_len);
4827
4828         if (CHECK(err < 0, "invalid get info (1st) errno:%d", errno)) {
4829                 fprintf(stderr, "%s\n", btf_log_buf);
4830                 err = -1;
4831                 goto done;
4832         }
4833         if (CHECK(info.nr_func_info != 3,
4834                   "incorrect info.nr_func_info (1st) %d",
4835                   info.nr_func_info)) {
4836                 err = -1;
4837                 goto done;
4838         }
4839         rec_size = info.func_info_rec_size;
4840         if (CHECK(rec_size != sizeof(struct bpf_func_info),
4841                   "incorrect info.func_info_rec_size (1st) %d\n", rec_size)) {
4842                 err = -1;
4843                 goto done;
4844         }
4845
4846         func_info = malloc(info.nr_func_info * rec_size);
4847         if (CHECK(!func_info, "out of memory")) {
4848                 err = -1;
4849                 goto done;
4850         }
4851
4852         /* reset info to only retrieve func_info related data */
4853         memset(&info, 0, sizeof(info));
4854         info.nr_func_info = 3;
4855         info.func_info_rec_size = rec_size;
4856         info.func_info = ptr_to_u64(func_info);
4857
4858         err = bpf_prog_get_info_by_fd(prog_fd, &info, &info_len);
4859
4860         if (CHECK(err < 0, "invalid get info (2nd) errno:%d", errno)) {
4861                 fprintf(stderr, "%s\n", btf_log_buf);
4862                 err = -1;
4863                 goto done;
4864         }
4865         if (CHECK(info.nr_func_info != 3,
4866                   "incorrect info.nr_func_info (2nd) %d",
4867                   info.nr_func_info)) {
4868                 err = -1;
4869                 goto done;
4870         }
4871         if (CHECK(info.func_info_rec_size != rec_size,
4872                   "incorrect info.func_info_rec_size (2nd) %d",
4873                   info.func_info_rec_size)) {
4874                 err = -1;
4875                 goto done;
4876         }
4877
4878         btf = btf__load_from_kernel_by_id(info.btf_id);
4879         err = libbpf_get_error(btf);
4880         if (CHECK(err, "cannot get btf from kernel, err: %d", err))
4881                 goto done;
4882
4883         /* check three functions */
4884         finfo = func_info;
4885         for (i = 0; i < 3; i++) {
4886                 const struct btf_type *t;
4887                 const char *fname;
4888
4889                 t = btf__type_by_id(btf, finfo->type_id);
4890                 if (CHECK(!t, "btf__type_by_id failure: id %u",
4891                           finfo->type_id)) {
4892                         err = -1;
4893                         goto done;
4894                 }
4895
4896                 fname = btf__name_by_offset(btf, t->name_off);
4897                 err = strcmp(fname, expected_fnames[i]);
4898                 /* for the second and third functions in .text section,
4899                  * the compiler may order them either way.
4900                  */
4901                 if (i && err)
4902                         err = strcmp(fname, expected_fnames[3 - i]);
4903                 if (CHECK(err, "incorrect fname %s", fname ? : "")) {
4904                         err = -1;
4905                         goto done;
4906                 }
4907
4908                 finfo = (void *)finfo + rec_size;
4909         }
4910
4911 skip:
4912         fprintf(stderr, "OK");
4913
4914 done:
4915         libbpf_set_strict_mode(LIBBPF_STRICT_ALL);
4916
4917         btf__free(btf);
4918         free(func_info);
4919         bpf_object__close(obj);
4920 }
4921
4922 const char *pprint_enum_str[] = {
4923         "ENUM_ZERO",
4924         "ENUM_ONE",
4925         "ENUM_TWO",
4926         "ENUM_THREE",
4927 };
4928
4929 struct pprint_mapv {
4930         uint32_t ui32;
4931         uint16_t ui16;
4932         /* 2 bytes hole */
4933         int32_t si32;
4934         uint32_t unused_bits2a:2,
4935                 bits28:28,
4936                 unused_bits2b:2;
4937         union {
4938                 uint64_t ui64;
4939                 uint8_t ui8a[8];
4940         };
4941         enum {
4942                 ENUM_ZERO,
4943                 ENUM_ONE,
4944                 ENUM_TWO,
4945                 ENUM_THREE,
4946         } aenum;
4947         uint32_t ui32b;
4948         uint32_t bits2c:2;
4949         uint8_t si8_4[2][2];
4950 };
4951
4952 #ifdef __SIZEOF_INT128__
4953 struct pprint_mapv_int128 {
4954         __int128 si128a;
4955         __int128 si128b;
4956         unsigned __int128 bits3:3;
4957         unsigned __int128 bits80:80;
4958         unsigned __int128 ui128;
4959 };
4960 #endif
4961
4962 static struct btf_raw_test pprint_test_template[] = {
4963 {
4964         .raw_types = {
4965                 /* unsighed char */                     /* [1] */
4966                 BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 8, 1),
4967                 /* unsigned short */                    /* [2] */
4968                 BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 16, 2),
4969                 /* unsigned int */                      /* [3] */
4970                 BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 32, 4),
4971                 /* int */                               /* [4] */
4972                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
4973                 /* unsigned long long */                /* [5] */
4974                 BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 64, 8),
4975                 /* 2 bits */                            /* [6] */
4976                 BTF_TYPE_INT_ENC(0, 0, 0, 2, 2),
4977                 /* 28 bits */                           /* [7] */
4978                 BTF_TYPE_INT_ENC(0, 0, 0, 28, 4),
4979                 /* uint8_t[8] */                        /* [8] */
4980                 BTF_TYPE_ARRAY_ENC(9, 1, 8),
4981                 /* typedef unsigned char uint8_t */     /* [9] */
4982                 BTF_TYPEDEF_ENC(NAME_TBD, 1),
4983                 /* typedef unsigned short uint16_t */   /* [10] */
4984                 BTF_TYPEDEF_ENC(NAME_TBD, 2),
4985                 /* typedef unsigned int uint32_t */     /* [11] */
4986                 BTF_TYPEDEF_ENC(NAME_TBD, 3),
4987                 /* typedef int int32_t */               /* [12] */
4988                 BTF_TYPEDEF_ENC(NAME_TBD, 4),
4989                 /* typedef unsigned long long uint64_t *//* [13] */
4990                 BTF_TYPEDEF_ENC(NAME_TBD, 5),
4991                 /* union (anon) */                      /* [14] */
4992                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_UNION, 0, 2), 8),
4993                 BTF_MEMBER_ENC(NAME_TBD, 13, 0),/* uint64_t ui64; */
4994                 BTF_MEMBER_ENC(NAME_TBD, 8, 0), /* uint8_t ui8a[8]; */
4995                 /* enum (anon) */                       /* [15] */
4996                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 4), 4),
4997                 BTF_ENUM_ENC(NAME_TBD, 0),
4998                 BTF_ENUM_ENC(NAME_TBD, 1),
4999                 BTF_ENUM_ENC(NAME_TBD, 2),
5000                 BTF_ENUM_ENC(NAME_TBD, 3),
5001                 /* struct pprint_mapv */                /* [16] */
5002                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 0, 11), 40),
5003                 BTF_MEMBER_ENC(NAME_TBD, 11, 0),        /* uint32_t ui32 */
5004                 BTF_MEMBER_ENC(NAME_TBD, 10, 32),       /* uint16_t ui16 */
5005                 BTF_MEMBER_ENC(NAME_TBD, 12, 64),       /* int32_t si32 */
5006                 BTF_MEMBER_ENC(NAME_TBD, 6, 96),        /* unused_bits2a */
5007                 BTF_MEMBER_ENC(NAME_TBD, 7, 98),        /* bits28 */
5008                 BTF_MEMBER_ENC(NAME_TBD, 6, 126),       /* unused_bits2b */
5009                 BTF_MEMBER_ENC(0, 14, 128),             /* union (anon) */
5010                 BTF_MEMBER_ENC(NAME_TBD, 15, 192),      /* aenum */
5011                 BTF_MEMBER_ENC(NAME_TBD, 11, 224),      /* uint32_t ui32b */
5012                 BTF_MEMBER_ENC(NAME_TBD, 6, 256),       /* bits2c */
5013                 BTF_MEMBER_ENC(NAME_TBD, 17, 264),      /* si8_4 */
5014                 BTF_TYPE_ARRAY_ENC(18, 1, 2),           /* [17] */
5015                 BTF_TYPE_ARRAY_ENC(1, 1, 2),            /* [18] */
5016                 BTF_END_RAW,
5017         },
5018         BTF_STR_SEC("\0unsigned char\0unsigned short\0unsigned int\0int\0unsigned long long\0uint8_t\0uint16_t\0uint32_t\0int32_t\0uint64_t\0ui64\0ui8a\0ENUM_ZERO\0ENUM_ONE\0ENUM_TWO\0ENUM_THREE\0pprint_mapv\0ui32\0ui16\0si32\0unused_bits2a\0bits28\0unused_bits2b\0aenum\0ui32b\0bits2c\0si8_4"),
5019         .key_size = sizeof(unsigned int),
5020         .value_size = sizeof(struct pprint_mapv),
5021         .key_type_id = 3,       /* unsigned int */
5022         .value_type_id = 16,    /* struct pprint_mapv */
5023         .max_entries = 128,
5024 },
5025
5026 {
5027         /* this type will have the same type as the
5028          * first .raw_types definition, but struct type will
5029          * be encoded with kind_flag set.
5030          */
5031         .raw_types = {
5032                 /* unsighed char */                     /* [1] */
5033                 BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 8, 1),
5034                 /* unsigned short */                    /* [2] */
5035                 BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 16, 2),
5036                 /* unsigned int */                      /* [3] */
5037                 BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 32, 4),
5038                 /* int */                               /* [4] */
5039                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
5040                 /* unsigned long long */                /* [5] */
5041                 BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 64, 8),
5042                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),       /* [6] */
5043                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),       /* [7] */
5044                 /* uint8_t[8] */                        /* [8] */
5045                 BTF_TYPE_ARRAY_ENC(9, 1, 8),
5046                 /* typedef unsigned char uint8_t */     /* [9] */
5047                 BTF_TYPEDEF_ENC(NAME_TBD, 1),
5048                 /* typedef unsigned short uint16_t */   /* [10] */
5049                 BTF_TYPEDEF_ENC(NAME_TBD, 2),
5050                 /* typedef unsigned int uint32_t */     /* [11] */
5051                 BTF_TYPEDEF_ENC(NAME_TBD, 3),
5052                 /* typedef int int32_t */               /* [12] */
5053                 BTF_TYPEDEF_ENC(NAME_TBD, 4),
5054                 /* typedef unsigned long long uint64_t *//* [13] */
5055                 BTF_TYPEDEF_ENC(NAME_TBD, 5),
5056                 /* union (anon) */                      /* [14] */
5057                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_UNION, 0, 2), 8),
5058                 BTF_MEMBER_ENC(NAME_TBD, 13, 0),/* uint64_t ui64; */
5059                 BTF_MEMBER_ENC(NAME_TBD, 8, 0), /* uint8_t ui8a[8]; */
5060                 /* enum (anon) */                       /* [15] */
5061                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 4), 4),
5062                 BTF_ENUM_ENC(NAME_TBD, 0),
5063                 BTF_ENUM_ENC(NAME_TBD, 1),
5064                 BTF_ENUM_ENC(NAME_TBD, 2),
5065                 BTF_ENUM_ENC(NAME_TBD, 3),
5066                 /* struct pprint_mapv */                /* [16] */
5067                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 11), 40),
5068                 BTF_MEMBER_ENC(NAME_TBD, 11, BTF_MEMBER_OFFSET(0, 0)),  /* uint32_t ui32 */
5069                 BTF_MEMBER_ENC(NAME_TBD, 10, BTF_MEMBER_OFFSET(0, 32)), /* uint16_t ui16 */
5070                 BTF_MEMBER_ENC(NAME_TBD, 12, BTF_MEMBER_OFFSET(0, 64)), /* int32_t si32 */
5071                 BTF_MEMBER_ENC(NAME_TBD, 6, BTF_MEMBER_OFFSET(2, 96)),  /* unused_bits2a */
5072                 BTF_MEMBER_ENC(NAME_TBD, 7, BTF_MEMBER_OFFSET(28, 98)), /* bits28 */
5073                 BTF_MEMBER_ENC(NAME_TBD, 6, BTF_MEMBER_OFFSET(2, 126)), /* unused_bits2b */
5074                 BTF_MEMBER_ENC(0, 14, BTF_MEMBER_OFFSET(0, 128)),       /* union (anon) */
5075                 BTF_MEMBER_ENC(NAME_TBD, 15, BTF_MEMBER_OFFSET(0, 192)),        /* aenum */
5076                 BTF_MEMBER_ENC(NAME_TBD, 11, BTF_MEMBER_OFFSET(0, 224)),        /* uint32_t ui32b */
5077                 BTF_MEMBER_ENC(NAME_TBD, 6, BTF_MEMBER_OFFSET(2, 256)), /* bits2c */
5078                 BTF_MEMBER_ENC(NAME_TBD, 17, 264),      /* si8_4 */
5079                 BTF_TYPE_ARRAY_ENC(18, 1, 2),           /* [17] */
5080                 BTF_TYPE_ARRAY_ENC(1, 1, 2),            /* [18] */
5081                 BTF_END_RAW,
5082         },
5083         BTF_STR_SEC("\0unsigned char\0unsigned short\0unsigned int\0int\0unsigned long long\0uint8_t\0uint16_t\0uint32_t\0int32_t\0uint64_t\0ui64\0ui8a\0ENUM_ZERO\0ENUM_ONE\0ENUM_TWO\0ENUM_THREE\0pprint_mapv\0ui32\0ui16\0si32\0unused_bits2a\0bits28\0unused_bits2b\0aenum\0ui32b\0bits2c\0si8_4"),
5084         .key_size = sizeof(unsigned int),
5085         .value_size = sizeof(struct pprint_mapv),
5086         .key_type_id = 3,       /* unsigned int */
5087         .value_type_id = 16,    /* struct pprint_mapv */
5088         .max_entries = 128,
5089 },
5090
5091 {
5092         /* this type will have the same layout as the
5093          * first .raw_types definition. The struct type will
5094          * be encoded with kind_flag set, bitfield members
5095          * are added typedef/const/volatile, and bitfield members
5096          * will have both int and enum types.
5097          */
5098         .raw_types = {
5099                 /* unsighed char */                     /* [1] */
5100                 BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 8, 1),
5101                 /* unsigned short */                    /* [2] */
5102                 BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 16, 2),
5103                 /* unsigned int */                      /* [3] */
5104                 BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 32, 4),
5105                 /* int */                               /* [4] */
5106                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),
5107                 /* unsigned long long */                /* [5] */
5108                 BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 64, 8),
5109                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),       /* [6] */
5110                 BTF_TYPE_INT_ENC(0, 0, 0, 32, 4),       /* [7] */
5111                 /* uint8_t[8] */                        /* [8] */
5112                 BTF_TYPE_ARRAY_ENC(9, 1, 8),
5113                 /* typedef unsigned char uint8_t */     /* [9] */
5114                 BTF_TYPEDEF_ENC(NAME_TBD, 1),
5115                 /* typedef unsigned short uint16_t */   /* [10] */
5116                 BTF_TYPEDEF_ENC(NAME_TBD, 2),
5117                 /* typedef unsigned int uint32_t */     /* [11] */
5118                 BTF_TYPEDEF_ENC(NAME_TBD, 3),
5119                 /* typedef int int32_t */               /* [12] */
5120                 BTF_TYPEDEF_ENC(NAME_TBD, 4),
5121                 /* typedef unsigned long long uint64_t *//* [13] */
5122                 BTF_TYPEDEF_ENC(NAME_TBD, 5),
5123                 /* union (anon) */                      /* [14] */
5124                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_UNION, 0, 2), 8),
5125                 BTF_MEMBER_ENC(NAME_TBD, 13, 0),/* uint64_t ui64; */
5126                 BTF_MEMBER_ENC(NAME_TBD, 8, 0), /* uint8_t ui8a[8]; */
5127                 /* enum (anon) */                       /* [15] */
5128                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 4), 4),
5129                 BTF_ENUM_ENC(NAME_TBD, 0),
5130                 BTF_ENUM_ENC(NAME_TBD, 1),
5131                 BTF_ENUM_ENC(NAME_TBD, 2),
5132                 BTF_ENUM_ENC(NAME_TBD, 3),
5133                 /* struct pprint_mapv */                /* [16] */
5134                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 11), 40),
5135                 BTF_MEMBER_ENC(NAME_TBD, 11, BTF_MEMBER_OFFSET(0, 0)),  /* uint32_t ui32 */
5136                 BTF_MEMBER_ENC(NAME_TBD, 10, BTF_MEMBER_OFFSET(0, 32)), /* uint16_t ui16 */
5137                 BTF_MEMBER_ENC(NAME_TBD, 12, BTF_MEMBER_OFFSET(0, 64)), /* int32_t si32 */
5138                 BTF_MEMBER_ENC(NAME_TBD, 17, BTF_MEMBER_OFFSET(2, 96)), /* unused_bits2a */
5139                 BTF_MEMBER_ENC(NAME_TBD, 7, BTF_MEMBER_OFFSET(28, 98)), /* bits28 */
5140                 BTF_MEMBER_ENC(NAME_TBD, 19, BTF_MEMBER_OFFSET(2, 126)),/* unused_bits2b */
5141                 BTF_MEMBER_ENC(0, 14, BTF_MEMBER_OFFSET(0, 128)),       /* union (anon) */
5142                 BTF_MEMBER_ENC(NAME_TBD, 15, BTF_MEMBER_OFFSET(0, 192)),        /* aenum */
5143                 BTF_MEMBER_ENC(NAME_TBD, 11, BTF_MEMBER_OFFSET(0, 224)),        /* uint32_t ui32b */
5144                 BTF_MEMBER_ENC(NAME_TBD, 17, BTF_MEMBER_OFFSET(2, 256)),        /* bits2c */
5145                 BTF_MEMBER_ENC(NAME_TBD, 20, BTF_MEMBER_OFFSET(0, 264)),        /* si8_4 */
5146                 /* typedef unsigned int ___int */       /* [17] */
5147                 BTF_TYPEDEF_ENC(NAME_TBD, 18),
5148                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_VOLATILE, 0, 0), 6),      /* [18] */
5149                 BTF_TYPE_ENC(0, BTF_INFO_ENC(BTF_KIND_CONST, 0, 0), 15),        /* [19] */
5150                 BTF_TYPE_ARRAY_ENC(21, 1, 2),                                   /* [20] */
5151                 BTF_TYPE_ARRAY_ENC(1, 1, 2),                                    /* [21] */
5152                 BTF_END_RAW,
5153         },
5154         BTF_STR_SEC("\0unsigned char\0unsigned short\0unsigned int\0int\0unsigned long long\0uint8_t\0uint16_t\0uint32_t\0int32_t\0uint64_t\0ui64\0ui8a\0ENUM_ZERO\0ENUM_ONE\0ENUM_TWO\0ENUM_THREE\0pprint_mapv\0ui32\0ui16\0si32\0unused_bits2a\0bits28\0unused_bits2b\0aenum\0ui32b\0bits2c\0___int\0si8_4"),
5155         .key_size = sizeof(unsigned int),
5156         .value_size = sizeof(struct pprint_mapv),
5157         .key_type_id = 3,       /* unsigned int */
5158         .value_type_id = 16,    /* struct pprint_mapv */
5159         .max_entries = 128,
5160 },
5161
5162 #ifdef __SIZEOF_INT128__
5163 {
5164         /* test int128 */
5165         .raw_types = {
5166                 /* unsigned int */                              /* [1] */
5167                 BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 32, 4),
5168                 /* __int128 */                                  /* [2] */
5169                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 128, 16),
5170                 /* unsigned __int128 */                         /* [3] */
5171                 BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 128, 16),
5172                 /* struct pprint_mapv_int128 */                 /* [4] */
5173                 BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 5), 64),
5174                 BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(0, 0)),           /* si128a */
5175                 BTF_MEMBER_ENC(NAME_TBD, 2, BTF_MEMBER_OFFSET(0, 128)),         /* si128b */
5176                 BTF_MEMBER_ENC(NAME_TBD, 3, BTF_MEMBER_OFFSET(3, 256)),         /* bits3 */
5177                 BTF_MEMBER_ENC(NAME_TBD, 3, BTF_MEMBER_OFFSET(80, 259)),        /* bits80 */
5178                 BTF_MEMBER_ENC(NAME_TBD, 3, BTF_MEMBER_OFFSET(0, 384)),         /* ui128 */
5179                 BTF_END_RAW,
5180         },
5181         BTF_STR_SEC("\0unsigned int\0__int128\0unsigned __int128\0pprint_mapv_int128\0si128a\0si128b\0bits3\0bits80\0ui128"),
5182         .key_size = sizeof(unsigned int),
5183         .value_size = sizeof(struct pprint_mapv_int128),
5184         .key_type_id = 1,
5185         .value_type_id = 4,
5186         .max_entries = 128,
5187         .mapv_kind = PPRINT_MAPV_KIND_INT128,
5188 },
5189 #endif
5190
5191 };
5192
5193 static struct btf_pprint_test_meta {
5194         const char *descr;
5195         enum bpf_map_type map_type;
5196         const char *map_name;
5197         bool ordered_map;
5198         bool lossless_map;
5199         bool percpu_map;
5200 } pprint_tests_meta[] = {
5201 {
5202         .descr = "BTF pretty print array",
5203         .map_type = BPF_MAP_TYPE_ARRAY,
5204         .map_name = "pprint_test_array",
5205         .ordered_map = true,
5206         .lossless_map = true,
5207         .percpu_map = false,
5208 },
5209
5210 {
5211         .descr = "BTF pretty print hash",
5212         .map_type = BPF_MAP_TYPE_HASH,
5213         .map_name = "pprint_test_hash",
5214         .ordered_map = false,
5215         .lossless_map = true,
5216         .percpu_map = false,
5217 },
5218
5219 {
5220         .descr = "BTF pretty print lru hash",
5221         .map_type = BPF_MAP_TYPE_LRU_HASH,
5222         .map_name = "pprint_test_lru_hash",
5223         .ordered_map = false,
5224         .lossless_map = false,
5225         .percpu_map = false,
5226 },
5227
5228 {
5229         .descr = "BTF pretty print percpu array",
5230         .map_type = BPF_MAP_TYPE_PERCPU_ARRAY,
5231         .map_name = "pprint_test_percpu_array",
5232         .ordered_map = true,
5233         .lossless_map = true,
5234         .percpu_map = true,
5235 },
5236
5237 {
5238         .descr = "BTF pretty print percpu hash",
5239         .map_type = BPF_MAP_TYPE_PERCPU_HASH,
5240         .map_name = "pprint_test_percpu_hash",
5241         .ordered_map = false,
5242         .lossless_map = true,
5243         .percpu_map = true,
5244 },
5245
5246 {
5247         .descr = "BTF pretty print lru percpu hash",
5248         .map_type = BPF_MAP_TYPE_LRU_PERCPU_HASH,
5249         .map_name = "pprint_test_lru_percpu_hash",
5250         .ordered_map = false,
5251         .lossless_map = false,
5252         .percpu_map = true,
5253 },
5254
5255 };
5256
5257 static size_t get_pprint_mapv_size(enum pprint_mapv_kind_t mapv_kind)
5258 {
5259         if (mapv_kind == PPRINT_MAPV_KIND_BASIC)
5260                 return sizeof(struct pprint_mapv);
5261
5262 #ifdef __SIZEOF_INT128__
5263         if (mapv_kind == PPRINT_MAPV_KIND_INT128)
5264                 return sizeof(struct pprint_mapv_int128);
5265 #endif
5266
5267         assert(0);
5268         return 0;
5269 }
5270
5271 static void set_pprint_mapv(enum pprint_mapv_kind_t mapv_kind,
5272                             void *mapv, uint32_t i,
5273                             int num_cpus, int rounded_value_size)
5274 {
5275         int cpu;
5276
5277         if (mapv_kind == PPRINT_MAPV_KIND_BASIC) {
5278                 struct pprint_mapv *v = mapv;
5279
5280                 for (cpu = 0; cpu < num_cpus; cpu++) {
5281                         v->ui32 = i + cpu;
5282                         v->si32 = -i;
5283                         v->unused_bits2a = 3;
5284                         v->bits28 = i;
5285                         v->unused_bits2b = 3;
5286                         v->ui64 = i;
5287                         v->aenum = i & 0x03;
5288                         v->ui32b = 4;
5289                         v->bits2c = 1;
5290                         v->si8_4[0][0] = (cpu + i) & 0xff;
5291                         v->si8_4[0][1] = (cpu + i + 1) & 0xff;
5292                         v->si8_4[1][0] = (cpu + i + 2) & 0xff;
5293                         v->si8_4[1][1] = (cpu + i + 3) & 0xff;
5294                         v = (void *)v + rounded_value_size;
5295                 }
5296         }
5297
5298 #ifdef __SIZEOF_INT128__
5299         if (mapv_kind == PPRINT_MAPV_KIND_INT128) {
5300                 struct pprint_mapv_int128 *v = mapv;
5301
5302                 for (cpu = 0; cpu < num_cpus; cpu++) {
5303                         v->si128a = i;
5304                         v->si128b = -i;
5305                         v->bits3 = i & 0x07;
5306                         v->bits80 = (((unsigned __int128)1) << 64) + i;
5307                         v->ui128 = (((unsigned __int128)2) << 64) + i;
5308                         v = (void *)v + rounded_value_size;
5309                 }
5310         }
5311 #endif
5312 }
5313
5314 ssize_t get_pprint_expected_line(enum pprint_mapv_kind_t mapv_kind,
5315                                  char *expected_line, ssize_t line_size,
5316                                  bool percpu_map, unsigned int next_key,
5317                                  int cpu, void *mapv)
5318 {
5319         ssize_t nexpected_line = -1;
5320
5321         if (mapv_kind == PPRINT_MAPV_KIND_BASIC) {
5322                 struct pprint_mapv *v = mapv;
5323
5324                 nexpected_line = snprintf(expected_line, line_size,
5325                                           "%s%u: {%u,0,%d,0x%x,0x%x,0x%x,"
5326                                           "{%llu|[%u,%u,%u,%u,%u,%u,%u,%u]},%s,"
5327                                           "%u,0x%x,[[%d,%d],[%d,%d]]}\n",
5328                                           percpu_map ? "\tcpu" : "",
5329                                           percpu_map ? cpu : next_key,
5330                                           v->ui32, v->si32,
5331                                           v->unused_bits2a,
5332                                           v->bits28,
5333                                           v->unused_bits2b,
5334                                           (__u64)v->ui64,
5335                                           v->ui8a[0], v->ui8a[1],
5336                                           v->ui8a[2], v->ui8a[3],
5337                                           v->ui8a[4], v->ui8a[5],
5338                                           v->ui8a[6], v->ui8a[7],
5339                                           pprint_enum_str[v->aenum],
5340                                           v->ui32b,
5341                                           v->bits2c,
5342                                           v->si8_4[0][0], v->si8_4[0][1],
5343                                           v->si8_4[1][0], v->si8_4[1][1]);
5344         }
5345
5346 #ifdef __SIZEOF_INT128__
5347         if (mapv_kind == PPRINT_MAPV_KIND_INT128) {
5348                 struct pprint_mapv_int128 *v = mapv;
5349
5350                 nexpected_line = snprintf(expected_line, line_size,
5351                                           "%s%u: {0x%lx,0x%lx,0x%lx,"
5352                                           "0x%lx%016lx,0x%lx%016lx}\n",
5353                                           percpu_map ? "\tcpu" : "",
5354                                           percpu_map ? cpu : next_key,
5355                                           (uint64_t)v->si128a,
5356                                           (uint64_t)v->si128b,
5357                                           (uint64_t)v->bits3,
5358                                           (uint64_t)(v->bits80 >> 64),
5359                                           (uint64_t)v->bits80,
5360                                           (uint64_t)(v->ui128 >> 64),
5361                                           (uint64_t)v->ui128);
5362         }
5363 #endif
5364
5365         return nexpected_line;
5366 }
5367
5368 static int check_line(const char *expected_line, int nexpected_line,
5369                       int expected_line_len, const char *line)
5370 {
5371         if (CHECK(nexpected_line == expected_line_len,
5372                   "expected_line is too long"))
5373                 return -1;
5374
5375         if (strcmp(expected_line, line)) {
5376                 fprintf(stderr, "unexpected pprint output\n");
5377                 fprintf(stderr, "expected: %s", expected_line);
5378                 fprintf(stderr, "    read: %s", line);
5379                 return -1;
5380         }
5381
5382         return 0;
5383 }
5384
5385
5386 static void do_test_pprint(int test_num)
5387 {
5388         const struct btf_raw_test *test = &pprint_test_template[test_num];
5389         enum pprint_mapv_kind_t mapv_kind = test->mapv_kind;
5390         LIBBPF_OPTS(bpf_map_create_opts, opts);
5391         bool ordered_map, lossless_map, percpu_map;
5392         int err, ret, num_cpus, rounded_value_size;
5393         unsigned int key, nr_read_elems;
5394         int map_fd = -1, btf_fd = -1;
5395         unsigned int raw_btf_size;
5396         char expected_line[255];
5397         FILE *pin_file = NULL;
5398         char pin_path[255];
5399         size_t line_len = 0;
5400         char *line = NULL;
5401         void *mapv = NULL;
5402         uint8_t *raw_btf;
5403         ssize_t nread;
5404
5405         if (!test__start_subtest(test->descr))
5406                 return;
5407
5408         raw_btf = btf_raw_create(&hdr_tmpl, test->raw_types,
5409                                  test->str_sec, test->str_sec_size,
5410                                  &raw_btf_size, NULL);
5411
5412         if (!raw_btf)
5413                 return;
5414
5415         *btf_log_buf = '\0';
5416         btf_fd = load_raw_btf(raw_btf, raw_btf_size);
5417         free(raw_btf);
5418
5419         if (CHECK(btf_fd < 0, "errno:%d\n", errno)) {
5420                 err = -1;
5421                 goto done;
5422         }
5423
5424         opts.btf_fd = btf_fd;
5425         opts.btf_key_type_id = test->key_type_id;
5426         opts.btf_value_type_id = test->value_type_id;
5427         map_fd = bpf_map_create(test->map_type, test->map_name,
5428                                 test->key_size, test->value_size, test->max_entries, &opts);
5429         if (CHECK(map_fd < 0, "errno:%d", errno)) {
5430                 err = -1;
5431                 goto done;
5432         }
5433
5434         ret = snprintf(pin_path, sizeof(pin_path), "%s/%s",
5435                        "/sys/fs/bpf", test->map_name);
5436
5437         if (CHECK(ret >= sizeof(pin_path), "pin_path %s/%s is too long",
5438                   "/sys/fs/bpf", test->map_name)) {
5439                 err = -1;
5440                 goto done;
5441         }
5442
5443         err = bpf_obj_pin(map_fd, pin_path);
5444         if (CHECK(err, "bpf_obj_pin(%s): errno:%d.", pin_path, errno))
5445                 goto done;
5446
5447         percpu_map = test->percpu_map;
5448         num_cpus = percpu_map ? bpf_num_possible_cpus() : 1;
5449         rounded_value_size = round_up(get_pprint_mapv_size(mapv_kind), 8);
5450         mapv = calloc(num_cpus, rounded_value_size);
5451         if (CHECK(!mapv, "mapv allocation failure")) {
5452                 err = -1;
5453                 goto done;
5454         }
5455
5456         for (key = 0; key < test->max_entries; key++) {
5457                 set_pprint_mapv(mapv_kind, mapv, key, num_cpus, rounded_value_size);
5458                 bpf_map_update_elem(map_fd, &key, mapv, 0);
5459         }
5460
5461         pin_file = fopen(pin_path, "r");
5462         if (CHECK(!pin_file, "fopen(%s): errno:%d", pin_path, errno)) {
5463                 err = -1;
5464                 goto done;
5465         }
5466
5467         /* Skip lines start with '#' */
5468         while ((nread = getline(&line, &line_len, pin_file)) > 0 &&
5469                *line == '#')
5470                 ;
5471
5472         if (CHECK(nread <= 0, "Unexpected EOF")) {
5473                 err = -1;
5474                 goto done;
5475         }
5476
5477         nr_read_elems = 0;
5478         ordered_map = test->ordered_map;
5479         lossless_map = test->lossless_map;
5480         do {
5481                 ssize_t nexpected_line;
5482                 unsigned int next_key;
5483                 void *cmapv;
5484                 int cpu;
5485
5486                 next_key = ordered_map ? nr_read_elems : atoi(line);
5487                 set_pprint_mapv(mapv_kind, mapv, next_key, num_cpus, rounded_value_size);
5488                 cmapv = mapv;
5489
5490                 for (cpu = 0; cpu < num_cpus; cpu++) {
5491                         if (percpu_map) {
5492                                 /* for percpu map, the format looks like:
5493                                  * <key>: {
5494                                  *      cpu0: <value_on_cpu0>
5495                                  *      cpu1: <value_on_cpu1>
5496                                  *      ...
5497                                  *      cpun: <value_on_cpun>
5498                                  * }
5499                                  *
5500                                  * let us verify the line containing the key here.
5501                                  */
5502                                 if (cpu == 0) {
5503                                         nexpected_line = snprintf(expected_line,
5504                                                                   sizeof(expected_line),
5505                                                                   "%u: {\n",
5506                                                                   next_key);
5507
5508                                         err = check_line(expected_line, nexpected_line,
5509                                                          sizeof(expected_line), line);
5510                                         if (err < 0)
5511                                                 goto done;
5512                                 }
5513
5514                                 /* read value@cpu */
5515                                 nread = getline(&line, &line_len, pin_file);
5516                                 if (nread < 0)
5517                                         break;
5518                         }
5519
5520                         nexpected_line = get_pprint_expected_line(mapv_kind, expected_line,
5521                                                                   sizeof(expected_line),
5522                                                                   percpu_map, next_key,
5523                                                                   cpu, cmapv);
5524                         err = check_line(expected_line, nexpected_line,
5525                                          sizeof(expected_line), line);
5526                         if (err < 0)
5527                                 goto done;
5528
5529                         cmapv = cmapv + rounded_value_size;
5530                 }
5531
5532                 if (percpu_map) {
5533                         /* skip the last bracket for the percpu map */
5534                         nread = getline(&line, &line_len, pin_file);
5535                         if (nread < 0)
5536                                 break;
5537                 }
5538
5539                 nread = getline(&line, &line_len, pin_file);
5540         } while (++nr_read_elems < test->max_entries && nread > 0);
5541
5542         if (lossless_map &&
5543             CHECK(nr_read_elems < test->max_entries,
5544                   "Unexpected EOF. nr_read_elems:%u test->max_entries:%u",
5545                   nr_read_elems, test->max_entries)) {
5546                 err = -1;
5547                 goto done;
5548         }
5549
5550         if (CHECK(nread > 0, "Unexpected extra pprint output: %s", line)) {
5551                 err = -1;
5552                 goto done;
5553         }
5554
5555         err = 0;
5556
5557 done:
5558         if (mapv)
5559                 free(mapv);
5560         if (!err)
5561                 fprintf(stderr, "OK");
5562         if (*btf_log_buf && (err || always_log))
5563                 fprintf(stderr, "\n%s", btf_log_buf);
5564         if (btf_fd >= 0)
5565                 close(btf_fd);
5566         if (map_fd >= 0)
5567                 close(map_fd);
5568         if (pin_file)
5569                 fclose(pin_file);
5570         unlink(pin_path);
5571         free(line);
5572 }
5573
5574 static void test_pprint(void)
5575 {
5576         unsigned int i;
5577
5578         /* test various maps with the first test template */
5579         for (i = 0; i < ARRAY_SIZE(pprint_tests_meta); i++) {
5580                 pprint_test_template[0].descr = pprint_tests_meta[i].descr;
5581                 pprint_test_template[0].map_type = pprint_tests_meta[i].map_type;
5582                 pprint_test_template[0].map_name = pprint_tests_meta[i].map_name;
5583                 pprint_test_template[0].ordered_map = pprint_tests_meta[i].ordered_map;
5584                 pprint_test_template[0].lossless_map = pprint_tests_meta[i].lossless_map;
5585                 pprint_test_template[0].percpu_map = pprint_tests_meta[i].percpu_map;
5586
5587                 do_test_pprint(0);
5588         }
5589
5590         /* test rest test templates with the first map */
5591         for (i = 1; i < ARRAY_SIZE(pprint_test_template); i++) {
5592                 pprint_test_template[i].descr = pprint_tests_meta[0].descr;
5593                 pprint_test_template[i].map_type = pprint_tests_meta[0].map_type;
5594                 pprint_test_template[i].map_name = pprint_tests_meta[0].map_name;
5595                 pprint_test_template[i].ordered_map = pprint_tests_meta[0].ordered_map;
5596                 pprint_test_template[i].lossless_map = pprint_tests_meta[0].lossless_map;
5597                 pprint_test_template[i].percpu_map = pprint_tests_meta[0].percpu_map;
5598                 do_test_pprint(i);
5599         }
5600 }
5601
5602 #define BPF_LINE_INFO_ENC(insn_off, file_off, line_off, line_num, line_col) \
5603         (insn_off), (file_off), (line_off), ((line_num) << 10 | ((line_col) & 0x3ff))
5604
5605 static struct prog_info_raw_test {
5606         const char *descr;
5607         const char *str_sec;
5608         const char *err_str;
5609         __u32 raw_types[MAX_NR_RAW_U32];
5610         __u32 str_sec_size;
5611         struct bpf_insn insns[MAX_INSNS];
5612         __u32 prog_type;
5613         __u32 func_info[MAX_SUBPROGS][2];
5614         __u32 func_info_rec_size;
5615         __u32 func_info_cnt;
5616         __u32 line_info[MAX_NR_RAW_U32];
5617         __u32 line_info_rec_size;
5618         __u32 nr_jited_ksyms;
5619         bool expected_prog_load_failure;
5620         __u32 dead_code_cnt;
5621         __u32 dead_code_mask;
5622         __u32 dead_func_cnt;
5623         __u32 dead_func_mask;
5624 } info_raw_tests[] = {
5625 {
5626         .descr = "func_type (main func + one sub)",
5627         .raw_types = {
5628                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
5629                 BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 32, 4),        /* [2] */
5630                 BTF_FUNC_PROTO_ENC(1, 2),                       /* [3] */
5631                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
5632                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
5633                 BTF_FUNC_PROTO_ENC(1, 2),                       /* [4] */
5634                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
5635                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
5636                 BTF_FUNC_ENC(NAME_TBD, 3),                      /* [5] */
5637                 BTF_FUNC_ENC(NAME_TBD, 4),                      /* [6] */
5638                 BTF_END_RAW,
5639         },
5640         .str_sec = "\0int\0unsigned int\0a\0b\0c\0d\0funcA\0funcB",
5641         .str_sec_size = sizeof("\0int\0unsigned int\0a\0b\0c\0d\0funcA\0funcB"),
5642         .insns = {
5643                 BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2),
5644                 BPF_MOV64_IMM(BPF_REG_0, 1),
5645                 BPF_EXIT_INSN(),
5646                 BPF_MOV64_IMM(BPF_REG_0, 2),
5647                 BPF_EXIT_INSN(),
5648         },
5649         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
5650         .func_info = { {0, 5}, {3, 6} },
5651         .func_info_rec_size = 8,
5652         .func_info_cnt = 2,
5653         .line_info = { BTF_END_RAW },
5654 },
5655
5656 {
5657         .descr = "func_type (Incorrect func_info_rec_size)",
5658         .raw_types = {
5659                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
5660                 BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 32, 4),        /* [2] */
5661                 BTF_FUNC_PROTO_ENC(1, 2),                       /* [3] */
5662                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
5663                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
5664                 BTF_FUNC_PROTO_ENC(1, 2),                       /* [4] */
5665                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
5666                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
5667                 BTF_FUNC_ENC(NAME_TBD, 3),                      /* [5] */
5668                 BTF_FUNC_ENC(NAME_TBD, 4),                      /* [6] */
5669                 BTF_END_RAW,
5670         },
5671         .str_sec = "\0int\0unsigned int\0a\0b\0c\0d\0funcA\0funcB",
5672         .str_sec_size = sizeof("\0int\0unsigned int\0a\0b\0c\0d\0funcA\0funcB"),
5673         .insns = {
5674                 BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2),
5675                 BPF_MOV64_IMM(BPF_REG_0, 1),
5676                 BPF_EXIT_INSN(),
5677                 BPF_MOV64_IMM(BPF_REG_0, 2),
5678                 BPF_EXIT_INSN(),
5679         },
5680         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
5681         .func_info = { {0, 5}, {3, 6} },
5682         .func_info_rec_size = 4,
5683         .func_info_cnt = 2,
5684         .line_info = { BTF_END_RAW },
5685         .expected_prog_load_failure = true,
5686 },
5687
5688 {
5689         .descr = "func_type (Incorrect func_info_cnt)",
5690         .raw_types = {
5691                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
5692                 BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 32, 4),        /* [2] */
5693                 BTF_FUNC_PROTO_ENC(1, 2),                       /* [3] */
5694                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
5695                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
5696                 BTF_FUNC_PROTO_ENC(1, 2),                       /* [4] */
5697                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
5698                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
5699                 BTF_FUNC_ENC(NAME_TBD, 3),                      /* [5] */
5700                 BTF_FUNC_ENC(NAME_TBD, 4),                      /* [6] */
5701                 BTF_END_RAW,
5702         },
5703         .str_sec = "\0int\0unsigned int\0a\0b\0c\0d\0funcA\0funcB",
5704         .str_sec_size = sizeof("\0int\0unsigned int\0a\0b\0c\0d\0funcA\0funcB"),
5705         .insns = {
5706                 BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2),
5707                 BPF_MOV64_IMM(BPF_REG_0, 1),
5708                 BPF_EXIT_INSN(),
5709                 BPF_MOV64_IMM(BPF_REG_0, 2),
5710                 BPF_EXIT_INSN(),
5711         },
5712         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
5713         .func_info = { {0, 5}, {3, 6} },
5714         .func_info_rec_size = 8,
5715         .func_info_cnt = 1,
5716         .line_info = { BTF_END_RAW },
5717         .expected_prog_load_failure = true,
5718 },
5719
5720 {
5721         .descr = "func_type (Incorrect bpf_func_info.insn_off)",
5722         .raw_types = {
5723                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
5724                 BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 32, 4),        /* [2] */
5725                 BTF_FUNC_PROTO_ENC(1, 2),                       /* [3] */
5726                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
5727                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
5728                 BTF_FUNC_PROTO_ENC(1, 2),                       /* [4] */
5729                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 2),
5730                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
5731                 BTF_FUNC_ENC(NAME_TBD, 3),                      /* [5] */
5732                 BTF_FUNC_ENC(NAME_TBD, 4),                      /* [6] */
5733                 BTF_END_RAW,
5734         },
5735         .str_sec = "\0int\0unsigned int\0a\0b\0c\0d\0funcA\0funcB",
5736         .str_sec_size = sizeof("\0int\0unsigned int\0a\0b\0c\0d\0funcA\0funcB"),
5737         .insns = {
5738                 BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 1, 0, 2),
5739                 BPF_MOV64_IMM(BPF_REG_0, 1),
5740                 BPF_EXIT_INSN(),
5741                 BPF_MOV64_IMM(BPF_REG_0, 2),
5742                 BPF_EXIT_INSN(),
5743         },
5744         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
5745         .func_info = { {0, 5}, {2, 6} },
5746         .func_info_rec_size = 8,
5747         .func_info_cnt = 2,
5748         .line_info = { BTF_END_RAW },
5749         .expected_prog_load_failure = true,
5750 },
5751
5752 {
5753         .descr = "line_info (No subprog)",
5754         .raw_types = {
5755                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
5756                 BTF_END_RAW,
5757         },
5758         BTF_STR_SEC("\0int\0int a=1;\0int b=2;\0return a + b;\0return a + b;"),
5759         .insns = {
5760                 BPF_MOV64_IMM(BPF_REG_0, 1),
5761                 BPF_MOV64_IMM(BPF_REG_1, 2),
5762                 BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
5763                 BPF_EXIT_INSN(),
5764         },
5765         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
5766         .func_info_cnt = 0,
5767         .line_info = {
5768                 BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
5769                 BPF_LINE_INFO_ENC(1, 0, NAME_TBD, 2, 9),
5770                 BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 3, 8),
5771                 BPF_LINE_INFO_ENC(3, 0, NAME_TBD, 4, 7),
5772                 BTF_END_RAW,
5773         },
5774         .line_info_rec_size = sizeof(struct bpf_line_info),
5775         .nr_jited_ksyms = 1,
5776 },
5777
5778 {
5779         .descr = "line_info (No subprog. insn_off >= prog->len)",
5780         .raw_types = {
5781                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
5782                 BTF_END_RAW,
5783         },
5784         BTF_STR_SEC("\0int\0int a=1;\0int b=2;\0return a + b;\0return a + b;"),
5785         .insns = {
5786                 BPF_MOV64_IMM(BPF_REG_0, 1),
5787                 BPF_MOV64_IMM(BPF_REG_1, 2),
5788                 BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
5789                 BPF_EXIT_INSN(),
5790         },
5791         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
5792         .func_info_cnt = 0,
5793         .line_info = {
5794                 BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
5795                 BPF_LINE_INFO_ENC(1, 0, NAME_TBD, 2, 9),
5796                 BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 3, 8),
5797                 BPF_LINE_INFO_ENC(3, 0, NAME_TBD, 4, 7),
5798                 BPF_LINE_INFO_ENC(4, 0, 0, 5, 6),
5799                 BTF_END_RAW,
5800         },
5801         .line_info_rec_size = sizeof(struct bpf_line_info),
5802         .nr_jited_ksyms = 1,
5803         .err_str = "line_info[4].insn_off",
5804         .expected_prog_load_failure = true,
5805 },
5806
5807 {
5808         .descr = "line_info (Zero bpf insn code)",
5809         .raw_types = {
5810                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
5811                 BTF_TYPE_INT_ENC(NAME_TBD, 0, 0, 64, 8),        /* [2] */
5812                 BTF_TYPEDEF_ENC(NAME_TBD, 2),                   /* [3] */
5813                 BTF_END_RAW,
5814         },
5815         BTF_STR_SEC("\0int\0unsigned long\0u64\0u64 a=1;\0return a;"),
5816         .insns = {
5817                 BPF_LD_IMM64(BPF_REG_0, 1),
5818                 BPF_EXIT_INSN(),
5819         },
5820         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
5821         .func_info_cnt = 0,
5822         .line_info = {
5823                 BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
5824                 BPF_LINE_INFO_ENC(1, 0, 0, 2, 9),
5825                 BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 3, 8),
5826                 BTF_END_RAW,
5827         },
5828         .line_info_rec_size = sizeof(struct bpf_line_info),
5829         .nr_jited_ksyms = 1,
5830         .err_str = "Invalid insn code at line_info[1]",
5831         .expected_prog_load_failure = true,
5832 },
5833
5834 {
5835         .descr = "line_info (No subprog. zero tailing line_info",
5836         .raw_types = {
5837                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
5838                 BTF_END_RAW,
5839         },
5840         BTF_STR_SEC("\0int\0int a=1;\0int b=2;\0return a + b;\0return a + b;"),
5841         .insns = {
5842                 BPF_MOV64_IMM(BPF_REG_0, 1),
5843                 BPF_MOV64_IMM(BPF_REG_1, 2),
5844                 BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
5845                 BPF_EXIT_INSN(),
5846         },
5847         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
5848         .func_info_cnt = 0,
5849         .line_info = {
5850                 BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10), 0,
5851                 BPF_LINE_INFO_ENC(1, 0, NAME_TBD, 2, 9), 0,
5852                 BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 3, 8), 0,
5853                 BPF_LINE_INFO_ENC(3, 0, NAME_TBD, 4, 7), 0,
5854                 BTF_END_RAW,
5855         },
5856         .line_info_rec_size = sizeof(struct bpf_line_info) + sizeof(__u32),
5857         .nr_jited_ksyms = 1,
5858 },
5859
5860 {
5861         .descr = "line_info (No subprog. nonzero tailing line_info)",
5862         .raw_types = {
5863                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
5864                 BTF_END_RAW,
5865         },
5866         BTF_STR_SEC("\0int\0int a=1;\0int b=2;\0return a + b;\0return a + b;"),
5867         .insns = {
5868                 BPF_MOV64_IMM(BPF_REG_0, 1),
5869                 BPF_MOV64_IMM(BPF_REG_1, 2),
5870                 BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
5871                 BPF_EXIT_INSN(),
5872         },
5873         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
5874         .func_info_cnt = 0,
5875         .line_info = {
5876                 BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10), 0,
5877                 BPF_LINE_INFO_ENC(1, 0, NAME_TBD, 2, 9), 0,
5878                 BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 3, 8), 0,
5879                 BPF_LINE_INFO_ENC(3, 0, NAME_TBD, 4, 7), 1,
5880                 BTF_END_RAW,
5881         },
5882         .line_info_rec_size = sizeof(struct bpf_line_info) + sizeof(__u32),
5883         .nr_jited_ksyms = 1,
5884         .err_str = "nonzero tailing record in line_info",
5885         .expected_prog_load_failure = true,
5886 },
5887
5888 {
5889         .descr = "line_info (subprog)",
5890         .raw_types = {
5891                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
5892                 BTF_END_RAW,
5893         },
5894         BTF_STR_SEC("\0int\0int a=1+1;\0return func(a);\0b+=1;\0return b;"),
5895         .insns = {
5896                 BPF_MOV64_IMM(BPF_REG_2, 1),
5897                 BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1),
5898                 BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
5899                 BPF_CALL_REL(1),
5900                 BPF_EXIT_INSN(),
5901                 BPF_MOV64_REG(BPF_REG_0, BPF_REG_1),
5902                 BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 1),
5903                 BPF_EXIT_INSN(),
5904         },
5905         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
5906         .func_info_cnt = 0,
5907         .line_info = {
5908                 BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
5909                 BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 2, 9),
5910                 BPF_LINE_INFO_ENC(5, 0, NAME_TBD, 3, 8),
5911                 BPF_LINE_INFO_ENC(7, 0, NAME_TBD, 4, 7),
5912                 BTF_END_RAW,
5913         },
5914         .line_info_rec_size = sizeof(struct bpf_line_info),
5915         .nr_jited_ksyms = 2,
5916 },
5917
5918 {
5919         .descr = "line_info (subprog + func_info)",
5920         .raw_types = {
5921                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
5922                 BTF_FUNC_PROTO_ENC(1, 1),                       /* [2] */
5923                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
5924                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [3] */
5925                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [4] */
5926                 BTF_END_RAW,
5927         },
5928         BTF_STR_SEC("\0int\0x\0sub\0main\0int a=1+1;\0return func(a);\0b+=1;\0return b;"),
5929         .insns = {
5930                 BPF_MOV64_IMM(BPF_REG_2, 1),
5931                 BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1),
5932                 BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
5933                 BPF_CALL_REL(1),
5934                 BPF_EXIT_INSN(),
5935                 BPF_MOV64_REG(BPF_REG_0, BPF_REG_1),
5936                 BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 1),
5937                 BPF_EXIT_INSN(),
5938         },
5939         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
5940         .func_info_cnt = 2,
5941         .func_info_rec_size = 8,
5942         .func_info = { {0, 4}, {5, 3} },
5943         .line_info = {
5944                 BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
5945                 BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 2, 9),
5946                 BPF_LINE_INFO_ENC(5, 0, NAME_TBD, 3, 8),
5947                 BPF_LINE_INFO_ENC(7, 0, NAME_TBD, 4, 7),
5948                 BTF_END_RAW,
5949         },
5950         .line_info_rec_size = sizeof(struct bpf_line_info),
5951         .nr_jited_ksyms = 2,
5952 },
5953
5954 {
5955         .descr = "line_info (subprog. missing 1st func line info)",
5956         .raw_types = {
5957                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
5958                 BTF_END_RAW,
5959         },
5960         BTF_STR_SEC("\0int\0int a=1+1;\0return func(a);\0b+=1;\0return b;"),
5961         .insns = {
5962                 BPF_MOV64_IMM(BPF_REG_2, 1),
5963                 BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1),
5964                 BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
5965                 BPF_CALL_REL(1),
5966                 BPF_EXIT_INSN(),
5967                 BPF_MOV64_REG(BPF_REG_0, BPF_REG_1),
5968                 BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 1),
5969                 BPF_EXIT_INSN(),
5970         },
5971         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
5972         .func_info_cnt = 0,
5973         .line_info = {
5974                 BPF_LINE_INFO_ENC(1, 0, NAME_TBD, 1, 10),
5975                 BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 2, 9),
5976                 BPF_LINE_INFO_ENC(5, 0, NAME_TBD, 3, 8),
5977                 BPF_LINE_INFO_ENC(7, 0, NAME_TBD, 4, 7),
5978                 BTF_END_RAW,
5979         },
5980         .line_info_rec_size = sizeof(struct bpf_line_info),
5981         .nr_jited_ksyms = 2,
5982         .err_str = "missing bpf_line_info for func#0",
5983         .expected_prog_load_failure = true,
5984 },
5985
5986 {
5987         .descr = "line_info (subprog. missing 2nd func line info)",
5988         .raw_types = {
5989                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
5990                 BTF_END_RAW,
5991         },
5992         BTF_STR_SEC("\0int\0int a=1+1;\0return func(a);\0b+=1;\0return b;"),
5993         .insns = {
5994                 BPF_MOV64_IMM(BPF_REG_2, 1),
5995                 BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1),
5996                 BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
5997                 BPF_CALL_REL(1),
5998                 BPF_EXIT_INSN(),
5999                 BPF_MOV64_REG(BPF_REG_0, BPF_REG_1),
6000                 BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 1),
6001                 BPF_EXIT_INSN(),
6002         },
6003         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
6004         .func_info_cnt = 0,
6005         .line_info = {
6006                 BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
6007                 BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 2, 9),
6008                 BPF_LINE_INFO_ENC(6, 0, NAME_TBD, 3, 8),
6009                 BPF_LINE_INFO_ENC(7, 0, NAME_TBD, 4, 7),
6010                 BTF_END_RAW,
6011         },
6012         .line_info_rec_size = sizeof(struct bpf_line_info),
6013         .nr_jited_ksyms = 2,
6014         .err_str = "missing bpf_line_info for func#1",
6015         .expected_prog_load_failure = true,
6016 },
6017
6018 {
6019         .descr = "line_info (subprog. unordered insn offset)",
6020         .raw_types = {
6021                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
6022                 BTF_END_RAW,
6023         },
6024         BTF_STR_SEC("\0int\0int a=1+1;\0return func(a);\0b+=1;\0return b;"),
6025         .insns = {
6026                 BPF_MOV64_IMM(BPF_REG_2, 1),
6027                 BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1),
6028                 BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
6029                 BPF_CALL_REL(1),
6030                 BPF_EXIT_INSN(),
6031                 BPF_MOV64_REG(BPF_REG_0, BPF_REG_1),
6032                 BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 1),
6033                 BPF_EXIT_INSN(),
6034         },
6035         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
6036         .func_info_cnt = 0,
6037         .line_info = {
6038                 BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
6039                 BPF_LINE_INFO_ENC(5, 0, NAME_TBD, 2, 9),
6040                 BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 3, 8),
6041                 BPF_LINE_INFO_ENC(7, 0, NAME_TBD, 4, 7),
6042                 BTF_END_RAW,
6043         },
6044         .line_info_rec_size = sizeof(struct bpf_line_info),
6045         .nr_jited_ksyms = 2,
6046         .err_str = "Invalid line_info[2].insn_off",
6047         .expected_prog_load_failure = true,
6048 },
6049
6050 {
6051         .descr = "line_info (dead start)",
6052         .raw_types = {
6053                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
6054                 BTF_END_RAW,
6055         },
6056         BTF_STR_SEC("\0int\0/* dead jmp */\0int a=1;\0int b=2;\0return a + b;\0return a + b;"),
6057         .insns = {
6058                 BPF_JMP_IMM(BPF_JA, 0, 0, 0),
6059                 BPF_MOV64_IMM(BPF_REG_0, 1),
6060                 BPF_MOV64_IMM(BPF_REG_1, 2),
6061                 BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
6062                 BPF_EXIT_INSN(),
6063         },
6064         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
6065         .func_info_cnt = 0,
6066         .line_info = {
6067                 BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
6068                 BPF_LINE_INFO_ENC(1, 0, NAME_TBD, 2, 9),
6069                 BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 3, 8),
6070                 BPF_LINE_INFO_ENC(3, 0, NAME_TBD, 4, 7),
6071                 BPF_LINE_INFO_ENC(4, 0, NAME_TBD, 5, 6),
6072                 BTF_END_RAW,
6073         },
6074         .line_info_rec_size = sizeof(struct bpf_line_info),
6075         .nr_jited_ksyms = 1,
6076         .dead_code_cnt = 1,
6077         .dead_code_mask = 0x01,
6078 },
6079
6080 {
6081         .descr = "line_info (dead end)",
6082         .raw_types = {
6083                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
6084                 BTF_END_RAW,
6085         },
6086         BTF_STR_SEC("\0int\0int a=1;\0int b=2;\0return a + b;\0/* dead jmp */\0return a + b;\0/* dead exit */"),
6087         .insns = {
6088                 BPF_MOV64_IMM(BPF_REG_0, 1),
6089                 BPF_MOV64_IMM(BPF_REG_1, 2),
6090                 BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
6091                 BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 10, 1),
6092                 BPF_EXIT_INSN(),
6093                 BPF_EXIT_INSN(),
6094         },
6095         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
6096         .func_info_cnt = 0,
6097         .line_info = {
6098                 BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 12),
6099                 BPF_LINE_INFO_ENC(1, 0, NAME_TBD, 2, 11),
6100                 BPF_LINE_INFO_ENC(2, 0, NAME_TBD, 3, 10),
6101                 BPF_LINE_INFO_ENC(3, 0, NAME_TBD, 4, 9),
6102                 BPF_LINE_INFO_ENC(4, 0, NAME_TBD, 5, 8),
6103                 BPF_LINE_INFO_ENC(5, 0, NAME_TBD, 6, 7),
6104                 BTF_END_RAW,
6105         },
6106         .line_info_rec_size = sizeof(struct bpf_line_info),
6107         .nr_jited_ksyms = 1,
6108         .dead_code_cnt = 2,
6109         .dead_code_mask = 0x28,
6110 },
6111
6112 {
6113         .descr = "line_info (dead code + subprog + func_info)",
6114         .raw_types = {
6115                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
6116                 BTF_FUNC_PROTO_ENC(1, 1),                       /* [2] */
6117                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
6118                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [3] */
6119                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [4] */
6120                 BTF_END_RAW,
6121         },
6122         BTF_STR_SEC("\0int\0x\0sub\0main\0int a=1+1;\0/* dead jmp */"
6123                     "\0/* dead */\0/* dead */\0/* dead */\0/* dead */"
6124                     "\0/* dead */\0/* dead */\0/* dead */\0/* dead */"
6125                     "\0return func(a);\0b+=1;\0return b;"),
6126         .insns = {
6127                 BPF_MOV64_IMM(BPF_REG_2, 1),
6128                 BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1),
6129                 BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
6130                 BPF_JMP_IMM(BPF_JGE, BPF_REG_2, 0, 8),
6131                 BPF_MOV64_IMM(BPF_REG_2, 1),
6132                 BPF_MOV64_IMM(BPF_REG_2, 1),
6133                 BPF_MOV64_IMM(BPF_REG_2, 1),
6134                 BPF_MOV64_IMM(BPF_REG_2, 1),
6135                 BPF_MOV64_IMM(BPF_REG_2, 1),
6136                 BPF_MOV64_IMM(BPF_REG_2, 1),
6137                 BPF_MOV64_IMM(BPF_REG_2, 1),
6138                 BPF_MOV64_IMM(BPF_REG_2, 1),
6139                 BPF_CALL_REL(1),
6140                 BPF_EXIT_INSN(),
6141                 BPF_MOV64_REG(BPF_REG_0, BPF_REG_1),
6142                 BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 1),
6143                 BPF_EXIT_INSN(),
6144         },
6145         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
6146         .func_info_cnt = 2,
6147         .func_info_rec_size = 8,
6148         .func_info = { {0, 4}, {14, 3} },
6149         .line_info = {
6150                 BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
6151                 BPF_LINE_INFO_ENC(3, 0, NAME_TBD, 1, 10),
6152                 BPF_LINE_INFO_ENC(4, 0, NAME_TBD, 1, 10),
6153                 BPF_LINE_INFO_ENC(5, 0, NAME_TBD, 1, 10),
6154                 BPF_LINE_INFO_ENC(6, 0, NAME_TBD, 1, 10),
6155                 BPF_LINE_INFO_ENC(7, 0, NAME_TBD, 1, 10),
6156                 BPF_LINE_INFO_ENC(8, 0, NAME_TBD, 1, 10),
6157                 BPF_LINE_INFO_ENC(9, 0, NAME_TBD, 1, 10),
6158                 BPF_LINE_INFO_ENC(10, 0, NAME_TBD, 1, 10),
6159                 BPF_LINE_INFO_ENC(11, 0, NAME_TBD, 2, 9),
6160                 BPF_LINE_INFO_ENC(12, 0, NAME_TBD, 2, 9),
6161                 BPF_LINE_INFO_ENC(14, 0, NAME_TBD, 3, 8),
6162                 BPF_LINE_INFO_ENC(16, 0, NAME_TBD, 4, 7),
6163                 BTF_END_RAW,
6164         },
6165         .line_info_rec_size = sizeof(struct bpf_line_info),
6166         .nr_jited_ksyms = 2,
6167         .dead_code_cnt = 9,
6168         .dead_code_mask = 0x3fe,
6169 },
6170
6171 {
6172         .descr = "line_info (dead subprog)",
6173         .raw_types = {
6174                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
6175                 BTF_FUNC_PROTO_ENC(1, 1),                       /* [2] */
6176                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
6177                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [3] */
6178                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [4] */
6179                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [5] */
6180                 BTF_END_RAW,
6181         },
6182         BTF_STR_SEC("\0int\0x\0dead\0main\0func\0int a=1+1;\0/* live call */"
6183                     "\0return 0;\0return 0;\0/* dead */\0/* dead */"
6184                     "\0/* dead */\0return bla + 1;\0return bla + 1;"
6185                     "\0return bla + 1;\0return func(a);\0b+=1;\0return b;"),
6186         .insns = {
6187                 BPF_MOV64_IMM(BPF_REG_2, 1),
6188                 BPF_JMP_IMM(BPF_JGE, BPF_REG_2, 0, 1),
6189                 BPF_CALL_REL(3),
6190                 BPF_CALL_REL(5),
6191                 BPF_MOV64_IMM(BPF_REG_0, 0),
6192                 BPF_EXIT_INSN(),
6193                 BPF_MOV64_IMM(BPF_REG_0, 0),
6194                 BPF_CALL_REL(1),
6195                 BPF_EXIT_INSN(),
6196                 BPF_MOV64_REG(BPF_REG_0, 2),
6197                 BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 1),
6198                 BPF_EXIT_INSN(),
6199         },
6200         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
6201         .func_info_cnt = 3,
6202         .func_info_rec_size = 8,
6203                 .func_info = { {0, 4}, {6, 3}, {9, 5} },
6204         .line_info = {
6205                 BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
6206                 BPF_LINE_INFO_ENC(3, 0, NAME_TBD, 1, 10),
6207                 BPF_LINE_INFO_ENC(4, 0, NAME_TBD, 1, 10),
6208                 BPF_LINE_INFO_ENC(5, 0, NAME_TBD, 1, 10),
6209                 BPF_LINE_INFO_ENC(6, 0, NAME_TBD, 1, 10),
6210                 BPF_LINE_INFO_ENC(7, 0, NAME_TBD, 1, 10),
6211                 BPF_LINE_INFO_ENC(8, 0, NAME_TBD, 1, 10),
6212                 BPF_LINE_INFO_ENC(9, 0, NAME_TBD, 1, 10),
6213                 BPF_LINE_INFO_ENC(10, 0, NAME_TBD, 1, 10),
6214                 BPF_LINE_INFO_ENC(11, 0, NAME_TBD, 2, 9),
6215                 BTF_END_RAW,
6216         },
6217         .line_info_rec_size = sizeof(struct bpf_line_info),
6218         .nr_jited_ksyms = 2,
6219         .dead_code_cnt = 3,
6220         .dead_code_mask = 0x70,
6221         .dead_func_cnt = 1,
6222         .dead_func_mask = 0x2,
6223 },
6224
6225 {
6226         .descr = "line_info (dead last subprog)",
6227         .raw_types = {
6228                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
6229                 BTF_FUNC_PROTO_ENC(1, 1),                       /* [2] */
6230                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
6231                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [3] */
6232                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [5] */
6233                 BTF_END_RAW,
6234         },
6235         BTF_STR_SEC("\0int\0x\0dead\0main\0int a=1+1;\0/* live call */"
6236                     "\0return 0;\0/* dead */\0/* dead */"),
6237         .insns = {
6238                 BPF_MOV64_IMM(BPF_REG_2, 1),
6239                 BPF_JMP_IMM(BPF_JGE, BPF_REG_2, 0, 1),
6240                 BPF_CALL_REL(2),
6241                 BPF_MOV64_IMM(BPF_REG_0, 0),
6242                 BPF_EXIT_INSN(),
6243                 BPF_MOV64_IMM(BPF_REG_0, 0),
6244                 BPF_EXIT_INSN(),
6245         },
6246         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
6247         .func_info_cnt = 2,
6248         .func_info_rec_size = 8,
6249                 .func_info = { {0, 4}, {5, 3} },
6250         .line_info = {
6251                 BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
6252                 BPF_LINE_INFO_ENC(3, 0, NAME_TBD, 1, 10),
6253                 BPF_LINE_INFO_ENC(4, 0, NAME_TBD, 1, 10),
6254                 BPF_LINE_INFO_ENC(5, 0, NAME_TBD, 1, 10),
6255                 BPF_LINE_INFO_ENC(6, 0, NAME_TBD, 1, 10),
6256                 BTF_END_RAW,
6257         },
6258         .line_info_rec_size = sizeof(struct bpf_line_info),
6259         .nr_jited_ksyms = 1,
6260         .dead_code_cnt = 2,
6261         .dead_code_mask = 0x18,
6262         .dead_func_cnt = 1,
6263         .dead_func_mask = 0x2,
6264 },
6265
6266 {
6267         .descr = "line_info (dead subprog + dead start)",
6268         .raw_types = {
6269                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
6270                 BTF_FUNC_PROTO_ENC(1, 1),                       /* [2] */
6271                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
6272                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [3] */
6273                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [4] */
6274                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [5] */
6275                 BTF_END_RAW,
6276         },
6277         BTF_STR_SEC("\0int\0x\0dead\0main\0func\0int a=1+1;\0/* dead */"
6278                     "\0return 0;\0return 0;\0return 0;"
6279                     "\0/* dead */\0/* dead */\0/* dead */\0/* dead */"
6280                     "\0return b + 1;\0return b + 1;\0return b + 1;"),
6281         .insns = {
6282                 BPF_JMP_IMM(BPF_JA, 0, 0, 0),
6283                 BPF_MOV64_IMM(BPF_REG_2, 1),
6284                 BPF_JMP_IMM(BPF_JGE, BPF_REG_2, 0, 1),
6285                 BPF_CALL_REL(3),
6286                 BPF_CALL_REL(5),
6287                 BPF_MOV64_IMM(BPF_REG_0, 0),
6288                 BPF_EXIT_INSN(),
6289                 BPF_MOV64_IMM(BPF_REG_0, 0),
6290                 BPF_CALL_REL(1),
6291                 BPF_EXIT_INSN(),
6292                 BPF_JMP_IMM(BPF_JA, 0, 0, 0),
6293                 BPF_MOV64_REG(BPF_REG_0, 2),
6294                 BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 1),
6295                 BPF_EXIT_INSN(),
6296         },
6297         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
6298         .func_info_cnt = 3,
6299         .func_info_rec_size = 8,
6300                 .func_info = { {0, 4}, {7, 3}, {10, 5} },
6301         .line_info = {
6302                 BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
6303                 BPF_LINE_INFO_ENC(3, 0, NAME_TBD, 1, 10),
6304                 BPF_LINE_INFO_ENC(4, 0, NAME_TBD, 1, 10),
6305                 BPF_LINE_INFO_ENC(5, 0, NAME_TBD, 1, 10),
6306                 BPF_LINE_INFO_ENC(6, 0, NAME_TBD, 1, 10),
6307                 BPF_LINE_INFO_ENC(7, 0, NAME_TBD, 1, 10),
6308                 BPF_LINE_INFO_ENC(8, 0, NAME_TBD, 1, 10),
6309                 BPF_LINE_INFO_ENC(9, 0, NAME_TBD, 1, 10),
6310                 BPF_LINE_INFO_ENC(10, 0, NAME_TBD, 1, 10),
6311                 BPF_LINE_INFO_ENC(11, 0, NAME_TBD, 2, 9),
6312                 BPF_LINE_INFO_ENC(12, 0, NAME_TBD, 2, 9),
6313                 BPF_LINE_INFO_ENC(13, 0, NAME_TBD, 2, 9),
6314                 BTF_END_RAW,
6315         },
6316         .line_info_rec_size = sizeof(struct bpf_line_info),
6317         .nr_jited_ksyms = 2,
6318         .dead_code_cnt = 5,
6319         .dead_code_mask = 0x1e2,
6320         .dead_func_cnt = 1,
6321         .dead_func_mask = 0x2,
6322 },
6323
6324 {
6325         .descr = "line_info (dead subprog + dead start w/ move)",
6326         .raw_types = {
6327                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
6328                 BTF_FUNC_PROTO_ENC(1, 1),                       /* [2] */
6329                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
6330                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [3] */
6331                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [4] */
6332                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [5] */
6333                 BTF_END_RAW,
6334         },
6335         BTF_STR_SEC("\0int\0x\0dead\0main\0func\0int a=1+1;\0/* live call */"
6336                     "\0return 0;\0return 0;\0/* dead */\0/* dead */"
6337                     "\0/* dead */\0return bla + 1;\0return bla + 1;"
6338                     "\0return bla + 1;\0return func(a);\0b+=1;\0return b;"),
6339         .insns = {
6340                 BPF_MOV64_IMM(BPF_REG_2, 1),
6341                 BPF_JMP_IMM(BPF_JGE, BPF_REG_2, 0, 1),
6342                 BPF_CALL_REL(3),
6343                 BPF_CALL_REL(5),
6344                 BPF_MOV64_IMM(BPF_REG_0, 0),
6345                 BPF_EXIT_INSN(),
6346                 BPF_MOV64_IMM(BPF_REG_0, 0),
6347                 BPF_CALL_REL(1),
6348                 BPF_EXIT_INSN(),
6349                 BPF_JMP_IMM(BPF_JA, 0, 0, 0),
6350                 BPF_MOV64_REG(BPF_REG_0, 2),
6351                 BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 1),
6352                 BPF_EXIT_INSN(),
6353         },
6354         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
6355         .func_info_cnt = 3,
6356         .func_info_rec_size = 8,
6357                 .func_info = { {0, 4}, {6, 3}, {9, 5} },
6358         .line_info = {
6359                 BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
6360                 BPF_LINE_INFO_ENC(3, 0, NAME_TBD, 1, 10),
6361                 BPF_LINE_INFO_ENC(4, 0, NAME_TBD, 1, 10),
6362                 BPF_LINE_INFO_ENC(5, 0, NAME_TBD, 1, 10),
6363                 BPF_LINE_INFO_ENC(6, 0, NAME_TBD, 1, 10),
6364                 BPF_LINE_INFO_ENC(7, 0, NAME_TBD, 1, 10),
6365                 BPF_LINE_INFO_ENC(8, 0, NAME_TBD, 1, 10),
6366                 BPF_LINE_INFO_ENC(9, 0, NAME_TBD, 1, 10),
6367                 BPF_LINE_INFO_ENC(11, 0, NAME_TBD, 1, 10),
6368                 BPF_LINE_INFO_ENC(12, 0, NAME_TBD, 2, 9),
6369                 BTF_END_RAW,
6370         },
6371         .line_info_rec_size = sizeof(struct bpf_line_info),
6372         .nr_jited_ksyms = 2,
6373         .dead_code_cnt = 3,
6374         .dead_code_mask = 0x70,
6375         .dead_func_cnt = 1,
6376         .dead_func_mask = 0x2,
6377 },
6378
6379 {
6380         .descr = "line_info (dead end + subprog start w/ no linfo)",
6381         .raw_types = {
6382                 BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 4),   /* [1] */
6383                 BTF_FUNC_PROTO_ENC(1, 1),                       /* [2] */
6384                         BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
6385                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [3] */
6386                 BTF_FUNC_ENC(NAME_TBD, 2),                      /* [4] */
6387                 BTF_END_RAW,
6388         },
6389         BTF_STR_SEC("\0int\0x\0main\0func\0/* main linfo */\0/* func linfo */"),
6390         .insns = {
6391                 BPF_MOV64_IMM(BPF_REG_0, 0),
6392                 BPF_JMP_IMM(BPF_JGE, BPF_REG_0, 1, 3),
6393                 BPF_CALL_REL(3),
6394                 BPF_MOV64_IMM(BPF_REG_0, 0),
6395                 BPF_EXIT_INSN(),
6396                 BPF_EXIT_INSN(),
6397                 BPF_JMP_IMM(BPF_JA, 0, 0, 0),
6398                 BPF_EXIT_INSN(),
6399         },
6400         .prog_type = BPF_PROG_TYPE_TRACEPOINT,
6401         .func_info_cnt = 2,
6402         .func_info_rec_size = 8,
6403         .func_info = { {0, 3}, {6, 4}, },
6404         .line_info = {
6405                 BPF_LINE_INFO_ENC(0, 0, NAME_TBD, 1, 10),
6406                 BPF_LINE_INFO_ENC(6, 0, NAME_TBD, 1, 10),
6407                 BTF_END_RAW,
6408         },
6409         .line_info_rec_size = sizeof(struct bpf_line_info),
6410         .nr_jited_ksyms = 2,
6411 },
6412
6413 };
6414
6415 static size_t probe_prog_length(const struct bpf_insn *fp)
6416 {
6417         size_t len;
6418
6419         for (len = MAX_INSNS - 1; len > 0; --len)
6420                 if (fp[len].code != 0 || fp[len].imm != 0)
6421                         break;
6422         return len + 1;
6423 }
6424
6425 static __u32 *patch_name_tbd(const __u32 *raw_u32,
6426                              const char *str, __u32 str_off,
6427                              unsigned int str_sec_size,
6428                              unsigned int *ret_size)
6429 {
6430         int i, raw_u32_size = get_raw_sec_size(raw_u32);
6431         const char *end_str = str + str_sec_size;
6432         const char *next_str = str + str_off;
6433         __u32 *new_u32 = NULL;
6434
6435         if (raw_u32_size == -1)
6436                 return ERR_PTR(-EINVAL);
6437
6438         if (!raw_u32_size) {
6439                 *ret_size = 0;
6440                 return NULL;
6441         }
6442
6443         new_u32 = malloc(raw_u32_size);
6444         if (!new_u32)
6445                 return ERR_PTR(-ENOMEM);
6446
6447         for (i = 0; i < raw_u32_size / sizeof(raw_u32[0]); i++) {
6448                 if (raw_u32[i] == NAME_TBD) {
6449                         next_str = get_next_str(next_str, end_str);
6450                         if (CHECK(!next_str, "Error in getting next_str\n")) {
6451                                 free(new_u32);
6452                                 return ERR_PTR(-EINVAL);
6453                         }
6454                         new_u32[i] = next_str - str;
6455                         next_str += strlen(next_str);
6456                 } else {
6457                         new_u32[i] = raw_u32[i];
6458                 }
6459         }
6460
6461         *ret_size = raw_u32_size;
6462         return new_u32;
6463 }
6464
6465 static int test_get_finfo(const struct prog_info_raw_test *test,
6466                           int prog_fd)
6467 {
6468         struct bpf_prog_info info = {};
6469         struct bpf_func_info *finfo;
6470         __u32 info_len, rec_size, i;
6471         void *func_info = NULL;
6472         __u32 nr_func_info;
6473         int err;
6474
6475         /* get necessary lens */
6476         info_len = sizeof(struct bpf_prog_info);
6477         err = bpf_prog_get_info_by_fd(prog_fd, &info, &info_len);
6478         if (CHECK(err < 0, "invalid get info (1st) errno:%d", errno)) {
6479                 fprintf(stderr, "%s\n", btf_log_buf);
6480                 return -1;
6481         }
6482         nr_func_info = test->func_info_cnt - test->dead_func_cnt;
6483         if (CHECK(info.nr_func_info != nr_func_info,
6484                   "incorrect info.nr_func_info (1st) %d",
6485                   info.nr_func_info)) {
6486                 return -1;
6487         }
6488
6489         rec_size = info.func_info_rec_size;
6490         if (CHECK(rec_size != sizeof(struct bpf_func_info),
6491                   "incorrect info.func_info_rec_size (1st) %d", rec_size)) {
6492                 return -1;
6493         }
6494
6495         if (!info.nr_func_info)
6496                 return 0;
6497
6498         func_info = malloc(info.nr_func_info * rec_size);
6499         if (CHECK(!func_info, "out of memory"))
6500                 return -1;
6501
6502         /* reset info to only retrieve func_info related data */
6503         memset(&info, 0, sizeof(info));
6504         info.nr_func_info = nr_func_info;
6505         info.func_info_rec_size = rec_size;
6506         info.func_info = ptr_to_u64(func_info);
6507         err = bpf_prog_get_info_by_fd(prog_fd, &info, &info_len);
6508         if (CHECK(err < 0, "invalid get info (2nd) errno:%d", errno)) {
6509                 fprintf(stderr, "%s\n", btf_log_buf);
6510                 err = -1;
6511                 goto done;
6512         }
6513         if (CHECK(info.nr_func_info != nr_func_info,
6514                   "incorrect info.nr_func_info (2nd) %d",
6515                   info.nr_func_info)) {
6516                 err = -1;
6517                 goto done;
6518         }
6519         if (CHECK(info.func_info_rec_size != rec_size,
6520                   "incorrect info.func_info_rec_size (2nd) %d",
6521                   info.func_info_rec_size)) {
6522                 err = -1;
6523                 goto done;
6524         }
6525
6526         finfo = func_info;
6527         for (i = 0; i < nr_func_info; i++) {
6528                 if (test->dead_func_mask & (1 << i))
6529                         continue;
6530                 if (CHECK(finfo->type_id != test->func_info[i][1],
6531                           "incorrect func_type %u expected %u",
6532                           finfo->type_id, test->func_info[i][1])) {
6533                         err = -1;
6534                         goto done;
6535                 }
6536                 finfo = (void *)finfo + rec_size;
6537         }
6538
6539         err = 0;
6540
6541 done:
6542         free(func_info);
6543         return err;
6544 }
6545
6546 static int test_get_linfo(const struct prog_info_raw_test *test,
6547                           const void *patched_linfo,
6548                           __u32 cnt, int prog_fd)
6549 {
6550         __u32 i, info_len, nr_jited_ksyms, nr_jited_func_lens;
6551         __u64 *jited_linfo = NULL, *jited_ksyms = NULL;
6552         __u32 rec_size, jited_rec_size, jited_cnt;
6553         struct bpf_line_info *linfo = NULL;
6554         __u32 cur_func_len, ksyms_found;
6555         struct bpf_prog_info info = {};
6556         __u32 *jited_func_lens = NULL;
6557         __u64 cur_func_ksyms;
6558         __u32 dead_insns;
6559         int err;
6560
6561         jited_cnt = cnt;
6562         rec_size = sizeof(*linfo);
6563         jited_rec_size = sizeof(*jited_linfo);
6564         if (test->nr_jited_ksyms)
6565                 nr_jited_ksyms = test->nr_jited_ksyms;
6566         else
6567                 nr_jited_ksyms = test->func_info_cnt - test->dead_func_cnt;
6568         nr_jited_func_lens = nr_jited_ksyms;
6569
6570         info_len = sizeof(struct bpf_prog_info);
6571         err = bpf_prog_get_info_by_fd(prog_fd, &info, &info_len);
6572         if (CHECK(err < 0, "err:%d errno:%d", err, errno)) {
6573                 err = -1;
6574                 goto done;
6575         }
6576
6577         if (!info.jited_prog_len) {
6578                 /* prog is not jited */
6579                 jited_cnt = 0;
6580                 nr_jited_ksyms = 1;
6581                 nr_jited_func_lens = 1;
6582         }
6583
6584         if (CHECK(info.nr_line_info != cnt ||
6585                   info.nr_jited_line_info != jited_cnt ||
6586                   info.nr_jited_ksyms != nr_jited_ksyms ||
6587                   info.nr_jited_func_lens != nr_jited_func_lens ||
6588                   (!info.nr_line_info && info.nr_jited_line_info),
6589                   "info: nr_line_info:%u(expected:%u) nr_jited_line_info:%u(expected:%u) nr_jited_ksyms:%u(expected:%u) nr_jited_func_lens:%u(expected:%u)",
6590                   info.nr_line_info, cnt,
6591                   info.nr_jited_line_info, jited_cnt,
6592                   info.nr_jited_ksyms, nr_jited_ksyms,
6593                   info.nr_jited_func_lens, nr_jited_func_lens)) {
6594                 err = -1;
6595                 goto done;
6596         }
6597
6598         if (CHECK(info.line_info_rec_size != sizeof(struct bpf_line_info) ||
6599                   info.jited_line_info_rec_size != sizeof(__u64),
6600                   "info: line_info_rec_size:%u(userspace expected:%u) jited_line_info_rec_size:%u(userspace expected:%u)",
6601                   info.line_info_rec_size, rec_size,
6602                   info.jited_line_info_rec_size, jited_rec_size)) {
6603                 err = -1;
6604                 goto done;
6605         }
6606
6607         if (!cnt)
6608                 return 0;
6609
6610         rec_size = info.line_info_rec_size;
6611         jited_rec_size = info.jited_line_info_rec_size;
6612
6613         memset(&info, 0, sizeof(info));
6614
6615         linfo = calloc(cnt, rec_size);
6616         if (CHECK(!linfo, "!linfo")) {
6617                 err = -1;
6618                 goto done;
6619         }
6620         info.nr_line_info = cnt;
6621         info.line_info_rec_size = rec_size;
6622         info.line_info = ptr_to_u64(linfo);
6623
6624         if (jited_cnt) {
6625                 jited_linfo = calloc(jited_cnt, jited_rec_size);
6626                 jited_ksyms = calloc(nr_jited_ksyms, sizeof(*jited_ksyms));
6627                 jited_func_lens = calloc(nr_jited_func_lens,
6628                                          sizeof(*jited_func_lens));
6629                 if (CHECK(!jited_linfo || !jited_ksyms || !jited_func_lens,
6630                           "jited_linfo:%p jited_ksyms:%p jited_func_lens:%p",
6631                           jited_linfo, jited_ksyms, jited_func_lens)) {
6632                         err = -1;
6633                         goto done;
6634                 }
6635
6636                 info.nr_jited_line_info = jited_cnt;
6637                 info.jited_line_info_rec_size = jited_rec_size;
6638                 info.jited_line_info = ptr_to_u64(jited_linfo);
6639                 info.nr_jited_ksyms = nr_jited_ksyms;
6640                 info.jited_ksyms = ptr_to_u64(jited_ksyms);
6641                 info.nr_jited_func_lens = nr_jited_func_lens;
6642                 info.jited_func_lens = ptr_to_u64(jited_func_lens);
6643         }
6644
6645         err = bpf_prog_get_info_by_fd(prog_fd, &info, &info_len);
6646
6647         /*
6648          * Only recheck the info.*line_info* fields.
6649          * Other fields are not the concern of this test.
6650          */
6651         if (CHECK(err < 0 ||
6652                   info.nr_line_info != cnt ||
6653                   (jited_cnt && !info.jited_line_info) ||
6654                   info.nr_jited_line_info != jited_cnt ||
6655                   info.line_info_rec_size != rec_size ||
6656                   info.jited_line_info_rec_size != jited_rec_size,
6657                   "err:%d errno:%d info: nr_line_info:%u(expected:%u) nr_jited_line_info:%u(expected:%u) line_info_rec_size:%u(expected:%u) jited_linfo_rec_size:%u(expected:%u) line_info:%p jited_line_info:%p",
6658                   err, errno,
6659                   info.nr_line_info, cnt,
6660                   info.nr_jited_line_info, jited_cnt,
6661                   info.line_info_rec_size, rec_size,
6662                   info.jited_line_info_rec_size, jited_rec_size,
6663                   (void *)(long)info.line_info,
6664                   (void *)(long)info.jited_line_info)) {
6665                 err = -1;
6666                 goto done;
6667         }
6668
6669         dead_insns = 0;
6670         while (test->dead_code_mask & (1 << dead_insns))
6671                 dead_insns++;
6672
6673         CHECK(linfo[0].insn_off, "linfo[0].insn_off:%u",
6674               linfo[0].insn_off);
6675         for (i = 1; i < cnt; i++) {
6676                 const struct bpf_line_info *expected_linfo;
6677
6678                 while (test->dead_code_mask & (1 << (i + dead_insns)))
6679                         dead_insns++;
6680
6681                 expected_linfo = patched_linfo +
6682                         ((i + dead_insns) * test->line_info_rec_size);
6683                 if (CHECK(linfo[i].insn_off <= linfo[i - 1].insn_off,
6684                           "linfo[%u].insn_off:%u <= linfo[%u].insn_off:%u",
6685                           i, linfo[i].insn_off,
6686                           i - 1, linfo[i - 1].insn_off)) {
6687                         err = -1;
6688                         goto done;
6689                 }
6690                 if (CHECK(linfo[i].file_name_off != expected_linfo->file_name_off ||
6691                           linfo[i].line_off != expected_linfo->line_off ||
6692                           linfo[i].line_col != expected_linfo->line_col,
6693                           "linfo[%u] (%u, %u, %u) != (%u, %u, %u)", i,
6694                           linfo[i].file_name_off,
6695                           linfo[i].line_off,
6696                           linfo[i].line_col,
6697                           expected_linfo->file_name_off,
6698                           expected_linfo->line_off,
6699                           expected_linfo->line_col)) {
6700                         err = -1;
6701                         goto done;
6702                 }
6703         }
6704
6705         if (!jited_cnt) {
6706                 fprintf(stderr, "not jited. skipping jited_line_info check. ");
6707                 err = 0;
6708                 goto done;
6709         }
6710
6711         if (CHECK(jited_linfo[0] != jited_ksyms[0],
6712                   "jited_linfo[0]:%lx != jited_ksyms[0]:%lx",
6713                   (long)(jited_linfo[0]), (long)(jited_ksyms[0]))) {
6714                 err = -1;
6715                 goto done;
6716         }
6717
6718         ksyms_found = 1;
6719         cur_func_len = jited_func_lens[0];
6720         cur_func_ksyms = jited_ksyms[0];
6721         for (i = 1; i < jited_cnt; i++) {
6722                 if (ksyms_found < nr_jited_ksyms &&
6723                     jited_linfo[i] == jited_ksyms[ksyms_found]) {
6724                         cur_func_ksyms = jited_ksyms[ksyms_found];
6725                         cur_func_len = jited_ksyms[ksyms_found];
6726                         ksyms_found++;
6727                         continue;
6728                 }
6729
6730                 if (CHECK(jited_linfo[i] <= jited_linfo[i - 1],
6731                           "jited_linfo[%u]:%lx <= jited_linfo[%u]:%lx",
6732                           i, (long)jited_linfo[i],
6733                           i - 1, (long)(jited_linfo[i - 1]))) {
6734                         err = -1;
6735                         goto done;
6736                 }
6737
6738                 if (CHECK(jited_linfo[i] - cur_func_ksyms > cur_func_len,
6739                           "jited_linfo[%u]:%lx - %lx > %u",
6740                           i, (long)jited_linfo[i], (long)cur_func_ksyms,
6741                           cur_func_len)) {
6742                         err = -1;
6743                         goto done;
6744                 }
6745         }
6746
6747         if (CHECK(ksyms_found != nr_jited_ksyms,
6748                   "ksyms_found:%u != nr_jited_ksyms:%u",
6749                   ksyms_found, nr_jited_ksyms)) {
6750                 err = -1;
6751                 goto done;
6752         }
6753
6754         err = 0;
6755
6756 done:
6757         free(linfo);
6758         free(jited_linfo);
6759         free(jited_ksyms);
6760         free(jited_func_lens);
6761         return err;
6762 }
6763
6764 static void do_test_info_raw(unsigned int test_num)
6765 {
6766         const struct prog_info_raw_test *test = &info_raw_tests[test_num - 1];
6767         unsigned int raw_btf_size, linfo_str_off, linfo_size = 0;
6768         int btf_fd = -1, prog_fd = -1, err = 0;
6769         void *raw_btf, *patched_linfo = NULL;
6770         const char *ret_next_str;
6771         union bpf_attr attr = {};
6772
6773         if (!test__start_subtest(test->descr))
6774                 return;
6775
6776         raw_btf = btf_raw_create(&hdr_tmpl, test->raw_types,
6777                                  test->str_sec, test->str_sec_size,
6778                                  &raw_btf_size, &ret_next_str);
6779         if (!raw_btf)
6780                 return;
6781
6782         *btf_log_buf = '\0';
6783         btf_fd = load_raw_btf(raw_btf, raw_btf_size);
6784         free(raw_btf);
6785
6786         if (CHECK(btf_fd < 0, "invalid btf_fd errno:%d", errno)) {
6787                 err = -1;
6788                 goto done;
6789         }
6790
6791         if (*btf_log_buf && always_log)
6792                 fprintf(stderr, "\n%s", btf_log_buf);
6793         *btf_log_buf = '\0';
6794
6795         linfo_str_off = ret_next_str - test->str_sec;
6796         patched_linfo = patch_name_tbd(test->line_info,
6797                                        test->str_sec, linfo_str_off,
6798                                        test->str_sec_size, &linfo_size);
6799         err = libbpf_get_error(patched_linfo);
6800         if (err) {
6801                 fprintf(stderr, "error in creating raw bpf_line_info");
6802                 err = -1;
6803                 goto done;
6804         }
6805
6806         attr.prog_type = test->prog_type;
6807         attr.insns = ptr_to_u64(test->insns);
6808         attr.insn_cnt = probe_prog_length(test->insns);
6809         attr.license = ptr_to_u64("GPL");
6810         attr.prog_btf_fd = btf_fd;
6811         attr.func_info_rec_size = test->func_info_rec_size;
6812         attr.func_info_cnt = test->func_info_cnt;
6813         attr.func_info = ptr_to_u64(test->func_info);
6814         attr.log_buf = ptr_to_u64(btf_log_buf);
6815         attr.log_size = BTF_LOG_BUF_SIZE;
6816         attr.log_level = 1;
6817         if (linfo_size) {
6818                 attr.line_info_rec_size = test->line_info_rec_size;
6819                 attr.line_info = ptr_to_u64(patched_linfo);
6820                 attr.line_info_cnt = linfo_size / attr.line_info_rec_size;
6821         }
6822
6823         prog_fd = syscall(__NR_bpf, BPF_PROG_LOAD, &attr, sizeof(attr));
6824         err = ((prog_fd < 0) != test->expected_prog_load_failure);
6825         if (CHECK(err, "prog_fd:%d expected_prog_load_failure:%u errno:%d",
6826                   prog_fd, test->expected_prog_load_failure, errno) ||
6827             CHECK(test->err_str && !strstr(btf_log_buf, test->err_str),
6828                   "expected err_str:%s", test->err_str)) {
6829                 err = -1;
6830                 goto done;
6831         }
6832
6833         if (prog_fd < 0)
6834                 goto done;
6835
6836         err = test_get_finfo(test, prog_fd);
6837         if (err)
6838                 goto done;
6839
6840         err = test_get_linfo(test, patched_linfo,
6841                              attr.line_info_cnt - test->dead_code_cnt,
6842                              prog_fd);
6843         if (err)
6844                 goto done;
6845
6846 done:
6847         if (*btf_log_buf && (err || always_log))
6848                 fprintf(stderr, "\n%s", btf_log_buf);
6849
6850         if (btf_fd >= 0)
6851                 close(btf_fd);
6852         if (prog_fd >= 0)
6853                 close(prog_fd);
6854
6855         if (!libbpf_get_error(patched_linfo))
6856                 free(patched_linfo);
6857 }
6858
6859 struct btf_raw_data {
6860         __u32 raw_types[MAX_NR_RAW_U32];
6861         const char *str_sec;
6862         __u32 str_sec_size;
6863 };
6864
6865 struct btf_dedup_test {
6866         const char *descr;
6867         struct btf_raw_data input;
6868         struct btf_raw_data expect;
6869         struct btf_dedup_opts opts;
6870 };
6871
6872 static struct btf_dedup_test dedup_tests[] = {
6873
6874 {
6875         .descr = "dedup: unused strings filtering",
6876         .input = {
6877                 .raw_types = {
6878                         BTF_TYPE_INT_ENC(NAME_NTH(2), BTF_INT_SIGNED, 0, 32, 4),
6879                         BTF_TYPE_INT_ENC(NAME_NTH(5), BTF_INT_SIGNED, 0, 64, 8),
6880                         BTF_END_RAW,
6881                 },
6882                 BTF_STR_SEC("\0unused\0int\0foo\0bar\0long"),
6883         },
6884         .expect = {
6885                 .raw_types = {
6886                         BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 4),
6887                         BTF_TYPE_INT_ENC(NAME_NTH(2), BTF_INT_SIGNED, 0, 64, 8),
6888                         BTF_END_RAW,
6889                 },
6890                 BTF_STR_SEC("\0int\0long"),
6891         },
6892 },
6893 {
6894         .descr = "dedup: strings deduplication",
6895         .input = {
6896                 .raw_types = {
6897                         BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 4),
6898                         BTF_TYPE_INT_ENC(NAME_NTH(2), BTF_INT_SIGNED, 0, 64, 8),
6899                         BTF_TYPE_INT_ENC(NAME_NTH(3), BTF_INT_SIGNED, 0, 32, 4),
6900                         BTF_TYPE_INT_ENC(NAME_NTH(4), BTF_INT_SIGNED, 0, 64, 8),
6901                         BTF_TYPE_INT_ENC(NAME_NTH(5), BTF_INT_SIGNED, 0, 32, 4),
6902                         BTF_END_RAW,
6903                 },
6904                 BTF_STR_SEC("\0int\0long int\0int\0long int\0int"),
6905         },
6906         .expect = {
6907                 .raw_types = {
6908                         BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 4),
6909                         BTF_TYPE_INT_ENC(NAME_NTH(2), BTF_INT_SIGNED, 0, 64, 8),
6910                         BTF_END_RAW,
6911                 },
6912                 BTF_STR_SEC("\0int\0long int"),
6913         },
6914 },
6915 {
6916         .descr = "dedup: struct example #1",
6917         /*
6918          * struct s {
6919          *      struct s *next;
6920          *      const int *a;
6921          *      int b[16];
6922          *      int c;
6923          * }
6924          */
6925         .input = {
6926                 .raw_types = {
6927                         /* int */
6928                         BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 4),        /* [1] */
6929                         /* int[16] */
6930                         BTF_TYPE_ARRAY_ENC(1, 1, 16),                                   /* [2] */
6931                         /* struct s { */
6932                         BTF_STRUCT_ENC(NAME_NTH(2), 5, 88),                             /* [3] */
6933                                 BTF_MEMBER_ENC(NAME_NTH(3), 4, 0),      /* struct s *next;      */
6934                                 BTF_MEMBER_ENC(NAME_NTH(4), 5, 64),     /* const int *a;        */
6935                                 BTF_MEMBER_ENC(NAME_NTH(5), 2, 128),    /* int b[16];           */
6936                                 BTF_MEMBER_ENC(NAME_NTH(6), 1, 640),    /* int c;               */
6937                                 BTF_MEMBER_ENC(NAME_NTH(8), 15, 672),   /* float d;             */
6938                         /* ptr -> [3] struct s */
6939                         BTF_PTR_ENC(3),                                                 /* [4] */
6940                         /* ptr -> [6] const int */
6941                         BTF_PTR_ENC(6),                                                 /* [5] */
6942                         /* const -> [1] int */
6943                         BTF_CONST_ENC(1),                                               /* [6] */
6944                         /* tag -> [3] struct s */
6945                         BTF_DECL_TAG_ENC(NAME_NTH(2), 3, -1),                           /* [7] */
6946                         /* tag -> [3] struct s, member 1 */
6947                         BTF_DECL_TAG_ENC(NAME_NTH(2), 3, 1),                            /* [8] */
6948
6949                         /* full copy of the above */
6950                         BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 4),        /* [9] */
6951                         BTF_TYPE_ARRAY_ENC(9, 9, 16),                                   /* [10] */
6952                         BTF_STRUCT_ENC(NAME_NTH(2), 5, 88),                             /* [11] */
6953                                 BTF_MEMBER_ENC(NAME_NTH(3), 12, 0),
6954                                 BTF_MEMBER_ENC(NAME_NTH(4), 13, 64),
6955                                 BTF_MEMBER_ENC(NAME_NTH(5), 10, 128),
6956                                 BTF_MEMBER_ENC(NAME_NTH(6), 9, 640),
6957                                 BTF_MEMBER_ENC(NAME_NTH(8), 15, 672),
6958                         BTF_PTR_ENC(11),                                                /* [12] */
6959                         BTF_PTR_ENC(14),                                                /* [13] */
6960                         BTF_CONST_ENC(9),                                               /* [14] */
6961                         BTF_TYPE_FLOAT_ENC(NAME_NTH(7), 4),                             /* [15] */
6962                         BTF_DECL_TAG_ENC(NAME_NTH(2), 11, -1),                          /* [16] */
6963                         BTF_DECL_TAG_ENC(NAME_NTH(2), 11, 1),                           /* [17] */
6964                         BTF_END_RAW,
6965                 },
6966                 BTF_STR_SEC("\0int\0s\0next\0a\0b\0c\0float\0d"),
6967         },
6968         .expect = {
6969                 .raw_types = {
6970                         /* int */
6971                         BTF_TYPE_INT_ENC(NAME_NTH(5), BTF_INT_SIGNED, 0, 32, 4),        /* [1] */
6972                         /* int[16] */
6973                         BTF_TYPE_ARRAY_ENC(1, 1, 16),                                   /* [2] */
6974                         /* struct s { */
6975                         BTF_STRUCT_ENC(NAME_NTH(8), 5, 88),                             /* [3] */
6976                                 BTF_MEMBER_ENC(NAME_NTH(7), 4, 0),      /* struct s *next;      */
6977                                 BTF_MEMBER_ENC(NAME_NTH(1), 5, 64),     /* const int *a;        */
6978                                 BTF_MEMBER_ENC(NAME_NTH(2), 2, 128),    /* int b[16];           */
6979                                 BTF_MEMBER_ENC(NAME_NTH(3), 1, 640),    /* int c;               */
6980                                 BTF_MEMBER_ENC(NAME_NTH(4), 9, 672),    /* float d;             */
6981                         /* ptr -> [3] struct s */
6982                         BTF_PTR_ENC(3),                                                 /* [4] */
6983                         /* ptr -> [6] const int */
6984                         BTF_PTR_ENC(6),                                                 /* [5] */
6985                         /* const -> [1] int */
6986                         BTF_CONST_ENC(1),                                               /* [6] */
6987                         BTF_DECL_TAG_ENC(NAME_NTH(2), 3, -1),                           /* [7] */
6988                         BTF_DECL_TAG_ENC(NAME_NTH(2), 3, 1),                            /* [8] */
6989                         BTF_TYPE_FLOAT_ENC(NAME_NTH(7), 4),                             /* [9] */
6990                         BTF_END_RAW,
6991                 },
6992                 BTF_STR_SEC("\0a\0b\0c\0d\0int\0float\0next\0s"),
6993         },
6994 },
6995 {
6996         .descr = "dedup: struct <-> fwd resolution w/ hash collision",
6997         /*
6998          * // CU 1:
6999          * struct x;
7000          * struct s {
7001          *      struct x *x;
7002          * };
7003          * // CU 2:
7004          * struct x {};
7005          * struct s {
7006          *      struct x *x;
7007          * };
7008          */
7009         .input = {
7010                 .raw_types = {
7011                         /* CU 1 */
7012                         BTF_FWD_ENC(NAME_TBD, 0 /* struct fwd */),      /* [1] fwd x      */
7013                         BTF_PTR_ENC(1),                                 /* [2] ptr -> [1] */
7014                         BTF_STRUCT_ENC(NAME_TBD, 1, 8),                 /* [3] struct s   */
7015                                 BTF_MEMBER_ENC(NAME_TBD, 2, 0),
7016                         /* CU 2 */
7017                         BTF_STRUCT_ENC(NAME_TBD, 0, 0),                 /* [4] struct x   */
7018                         BTF_PTR_ENC(4),                                 /* [5] ptr -> [4] */
7019                         BTF_STRUCT_ENC(NAME_TBD, 1, 8),                 /* [6] struct s   */
7020                                 BTF_MEMBER_ENC(NAME_TBD, 5, 0),
7021                         BTF_END_RAW,
7022                 },
7023                 BTF_STR_SEC("\0x\0s\0x\0x\0s\0x\0"),
7024         },
7025         .expect = {
7026                 .raw_types = {
7027                         BTF_PTR_ENC(3),                                 /* [1] ptr -> [3] */
7028                         BTF_STRUCT_ENC(NAME_TBD, 1, 8),                 /* [2] struct s   */
7029                                 BTF_MEMBER_ENC(NAME_TBD, 1, 0),
7030                         BTF_STRUCT_ENC(NAME_NTH(2), 0, 0),              /* [3] struct x   */
7031                         BTF_END_RAW,
7032                 },
7033                 BTF_STR_SEC("\0s\0x"),
7034         },
7035         .opts = {
7036                 .force_collisions = true, /* force hash collisions */
7037         },
7038 },
7039 {
7040         .descr = "dedup: void equiv check",
7041         /*
7042          * // CU 1:
7043          * struct s {
7044          *      struct {} *x;
7045          * };
7046          * // CU 2:
7047          * struct s {
7048          *      int *x;
7049          * };
7050          */
7051         .input = {
7052                 .raw_types = {
7053                         /* CU 1 */
7054                         BTF_STRUCT_ENC(0, 0, 1),                                /* [1] struct {}  */
7055                         BTF_PTR_ENC(1),                                         /* [2] ptr -> [1] */
7056                         BTF_STRUCT_ENC(NAME_NTH(1), 1, 8),                      /* [3] struct s   */
7057                                 BTF_MEMBER_ENC(NAME_NTH(2), 2, 0),
7058                         /* CU 2 */
7059                         BTF_PTR_ENC(0),                                         /* [4] ptr -> void */
7060                         BTF_STRUCT_ENC(NAME_NTH(1), 1, 8),                      /* [5] struct s   */
7061                                 BTF_MEMBER_ENC(NAME_NTH(2), 4, 0),
7062                         BTF_END_RAW,
7063                 },
7064                 BTF_STR_SEC("\0s\0x"),
7065         },
7066         .expect = {
7067                 .raw_types = {
7068                         /* CU 1 */
7069                         BTF_STRUCT_ENC(0, 0, 1),                                /* [1] struct {}  */
7070                         BTF_PTR_ENC(1),                                         /* [2] ptr -> [1] */
7071                         BTF_STRUCT_ENC(NAME_NTH(1), 1, 8),                      /* [3] struct s   */
7072                                 BTF_MEMBER_ENC(NAME_NTH(2), 2, 0),
7073                         /* CU 2 */
7074                         BTF_PTR_ENC(0),                                         /* [4] ptr -> void */
7075                         BTF_STRUCT_ENC(NAME_NTH(1), 1, 8),                      /* [5] struct s   */
7076                                 BTF_MEMBER_ENC(NAME_NTH(2), 4, 0),
7077                         BTF_END_RAW,
7078                 },
7079                 BTF_STR_SEC("\0s\0x"),
7080         },
7081         .opts = {
7082                 .force_collisions = true, /* force hash collisions */
7083         },
7084 },
7085 {
7086         .descr = "dedup: all possible kinds (no duplicates)",
7087         .input = {
7088                 .raw_types = {
7089                         BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 8),           /* [1] int */
7090                         BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 2), 4),   /* [2] enum */
7091                                 BTF_ENUM_ENC(NAME_TBD, 0),
7092                                 BTF_ENUM_ENC(NAME_TBD, 1),
7093                         BTF_FWD_ENC(NAME_TBD, 1 /* union kind_flag */),                 /* [3] fwd */
7094                         BTF_TYPE_ARRAY_ENC(2, 1, 7),                                    /* [4] array */
7095                         BTF_STRUCT_ENC(NAME_TBD, 1, 4),                                 /* [5] struct */
7096                                 BTF_MEMBER_ENC(NAME_TBD, 1, 0),
7097                         BTF_UNION_ENC(NAME_TBD, 1, 4),                                  /* [6] union */
7098                                 BTF_MEMBER_ENC(NAME_TBD, 1, 0),
7099                         BTF_TYPEDEF_ENC(NAME_TBD, 1),                                   /* [7] typedef */
7100                         BTF_PTR_ENC(0),                                                 /* [8] ptr */
7101                         BTF_CONST_ENC(8),                                               /* [9] const */
7102                         BTF_VOLATILE_ENC(8),                                            /* [10] volatile */
7103                         BTF_RESTRICT_ENC(8),                                            /* [11] restrict */
7104                         BTF_FUNC_PROTO_ENC(1, 2),                                       /* [12] func_proto */
7105                                 BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
7106                                 BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 18),
7107                         BTF_FUNC_ENC(NAME_TBD, 12),                                     /* [13] func */
7108                         BTF_TYPE_FLOAT_ENC(NAME_TBD, 2),                                /* [14] float */
7109                         BTF_DECL_TAG_ENC(NAME_TBD, 13, -1),                             /* [15] decl_tag */
7110                         BTF_DECL_TAG_ENC(NAME_TBD, 13, 1),                              /* [16] decl_tag */
7111                         BTF_DECL_TAG_ENC(NAME_TBD, 7, -1),                              /* [17] decl_tag */
7112                         BTF_TYPE_TAG_ENC(NAME_TBD, 8),                                  /* [18] type_tag */
7113                         BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 2), 8), /* [19] enum64 */
7114                                 BTF_ENUM64_ENC(NAME_TBD, 0, 0),
7115                                 BTF_ENUM64_ENC(NAME_TBD, 1, 1),
7116                         BTF_END_RAW,
7117                 },
7118                 BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M\0N\0O\0P\0Q\0R\0S\0T\0U"),
7119         },
7120         .expect = {
7121                 .raw_types = {
7122                         BTF_TYPE_INT_ENC(NAME_TBD, BTF_INT_SIGNED, 0, 32, 8),           /* [1] int */
7123                         BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_ENUM, 0, 2), 4),   /* [2] enum */
7124                                 BTF_ENUM_ENC(NAME_TBD, 0),
7125                                 BTF_ENUM_ENC(NAME_TBD, 1),
7126                         BTF_FWD_ENC(NAME_TBD, 1 /* union kind_flag */),                 /* [3] fwd */
7127                         BTF_TYPE_ARRAY_ENC(2, 1, 7),                                    /* [4] array */
7128                         BTF_STRUCT_ENC(NAME_TBD, 1, 4),                                 /* [5] struct */
7129                                 BTF_MEMBER_ENC(NAME_TBD, 1, 0),
7130                         BTF_UNION_ENC(NAME_TBD, 1, 4),                                  /* [6] union */
7131                                 BTF_MEMBER_ENC(NAME_TBD, 1, 0),
7132                         BTF_TYPEDEF_ENC(NAME_TBD, 1),                                   /* [7] typedef */
7133                         BTF_PTR_ENC(0),                                                 /* [8] ptr */
7134                         BTF_CONST_ENC(8),                                               /* [9] const */
7135                         BTF_VOLATILE_ENC(8),                                            /* [10] volatile */
7136                         BTF_RESTRICT_ENC(8),                                            /* [11] restrict */
7137                         BTF_FUNC_PROTO_ENC(1, 2),                                       /* [12] func_proto */
7138                                 BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 1),
7139                                 BTF_FUNC_PROTO_ARG_ENC(NAME_TBD, 18),
7140                         BTF_FUNC_ENC(NAME_TBD, 12),                                     /* [13] func */
7141                         BTF_TYPE_FLOAT_ENC(NAME_TBD, 2),                                /* [14] float */
7142                         BTF_DECL_TAG_ENC(NAME_TBD, 13, -1),                             /* [15] decl_tag */
7143                         BTF_DECL_TAG_ENC(NAME_TBD, 13, 1),                              /* [16] decl_tag */
7144                         BTF_DECL_TAG_ENC(NAME_TBD, 7, -1),                              /* [17] decl_tag */
7145                         BTF_TYPE_TAG_ENC(NAME_TBD, 8),                                  /* [18] type_tag */
7146                         BTF_TYPE_ENC(NAME_TBD, BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 2), 8), /* [19] enum64 */
7147                                 BTF_ENUM64_ENC(NAME_TBD, 0, 0),
7148                                 BTF_ENUM64_ENC(NAME_TBD, 1, 1),
7149                         BTF_END_RAW,
7150                 },
7151                 BTF_STR_SEC("\0A\0B\0C\0D\0E\0F\0G\0H\0I\0J\0K\0L\0M\0N\0O\0P\0Q\0R\0S\0T\0U"),
7152         },
7153 },
7154 {
7155         .descr = "dedup: no int/float duplicates",
7156         .input = {
7157                 .raw_types = {
7158                         BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 8),
7159                         /* different name */
7160                         BTF_TYPE_INT_ENC(NAME_NTH(2), BTF_INT_SIGNED, 0, 32, 8),
7161                         /* different encoding */
7162                         BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_CHAR, 0, 32, 8),
7163                         BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_BOOL, 0, 32, 8),
7164                         /* different bit offset */
7165                         BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 8, 32, 8),
7166                         /* different bit size */
7167                         BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 27, 8),
7168                         /* different byte size */
7169                         BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 4),
7170                         /* all allowed sizes */
7171                         BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 2),
7172                         BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 4),
7173                         BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 8),
7174                         BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 12),
7175                         BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 16),
7176                         BTF_END_RAW,
7177                 },
7178                 BTF_STR_SEC("\0int\0some other int\0float"),
7179         },
7180         .expect = {
7181                 .raw_types = {
7182                         BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 8),
7183                         /* different name */
7184                         BTF_TYPE_INT_ENC(NAME_NTH(2), BTF_INT_SIGNED, 0, 32, 8),
7185                         /* different encoding */
7186                         BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_CHAR, 0, 32, 8),
7187                         BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_BOOL, 0, 32, 8),
7188                         /* different bit offset */
7189                         BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 8, 32, 8),
7190                         /* different bit size */
7191                         BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 27, 8),
7192                         /* different byte size */
7193                         BTF_TYPE_INT_ENC(NAME_NTH(1), BTF_INT_SIGNED, 0, 32, 4),
7194                         /* all allowed sizes */
7195                         BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 2),
7196                         BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 4),
7197                         BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 8),
7198                         BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 12),
7199                         BTF_TYPE_FLOAT_ENC(NAME_NTH(3), 16),
7200                         BTF_END_RAW,
7201                 },
7202                 BTF_STR_SEC("\0int\0some other int\0float"),
7203         },
7204 },
7205 {
7206         .descr = "dedup: enum fwd resolution",
7207         .input = {
7208                 .raw_types = {
7209                         /* [1] fwd enum 'e1' before full enum */
7210                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM, 0, 0), 4),
7211                         /* [2] full enum 'e1' after fwd */
7212                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4),
7213                                 BTF_ENUM_ENC(NAME_NTH(2), 123),
7214                         /* [3] full enum 'e2' before fwd */
7215                         BTF_TYPE_ENC(NAME_NTH(3), BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4),
7216                                 BTF_ENUM_ENC(NAME_NTH(4), 456),
7217                         /* [4] fwd enum 'e2' after full enum */
7218                         BTF_TYPE_ENC(NAME_NTH(3), BTF_INFO_ENC(BTF_KIND_ENUM, 0, 0), 4),
7219                         /* [5] fwd enum with different size, size does not matter for fwd */
7220                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM, 0, 0), 1),
7221                         /* [6] incompatible full enum with different value */
7222                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4),
7223                                 BTF_ENUM_ENC(NAME_NTH(2), 321),
7224                         BTF_END_RAW,
7225                 },
7226                 BTF_STR_SEC("\0e1\0e1_val\0e2\0e2_val"),
7227         },
7228         .expect = {
7229                 .raw_types = {
7230                         /* [1] full enum 'e1' */
7231                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4),
7232                                 BTF_ENUM_ENC(NAME_NTH(2), 123),
7233                         /* [2] full enum 'e2' */
7234                         BTF_TYPE_ENC(NAME_NTH(3), BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4),
7235                                 BTF_ENUM_ENC(NAME_NTH(4), 456),
7236                         /* [3] incompatible full enum with different value */
7237                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4),
7238                                 BTF_ENUM_ENC(NAME_NTH(2), 321),
7239                         BTF_END_RAW,
7240                 },
7241                 BTF_STR_SEC("\0e1\0e1_val\0e2\0e2_val"),
7242         },
7243 },
7244 {
7245         .descr = "dedup: datasec and vars pass-through",
7246         .input = {
7247                 .raw_types = {
7248                         /* int */
7249                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
7250                         /* static int t */
7251                         BTF_VAR_ENC(NAME_NTH(2), 1, 0),                 /* [2] */
7252                         /* .bss section */                              /* [3] */
7253                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 4),
7254                         BTF_VAR_SECINFO_ENC(2, 0, 4),
7255                         /* int, referenced from [5] */
7256                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [4] */
7257                         /* another static int t */
7258                         BTF_VAR_ENC(NAME_NTH(2), 4, 0),                 /* [5] */
7259                         /* another .bss section */                      /* [6] */
7260                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 4),
7261                         BTF_VAR_SECINFO_ENC(5, 0, 4),
7262                         BTF_END_RAW,
7263                 },
7264                 BTF_STR_SEC("\0.bss\0t"),
7265         },
7266         .expect = {
7267                 .raw_types = {
7268                         /* int */
7269                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
7270                         /* static int t */
7271                         BTF_VAR_ENC(NAME_NTH(2), 1, 0),                 /* [2] */
7272                         /* .bss section */                              /* [3] */
7273                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 4),
7274                         BTF_VAR_SECINFO_ENC(2, 0, 4),
7275                         /* another static int t */
7276                         BTF_VAR_ENC(NAME_NTH(2), 1, 0),                 /* [4] */
7277                         /* another .bss section */                      /* [5] */
7278                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_DATASEC, 0, 1), 4),
7279                         BTF_VAR_SECINFO_ENC(4, 0, 4),
7280                         BTF_END_RAW,
7281                 },
7282                 BTF_STR_SEC("\0.bss\0t"),
7283         },
7284         .opts = {
7285                 .force_collisions = true
7286         },
7287 },
7288 {
7289         .descr = "dedup: func/func_arg/var tags",
7290         .input = {
7291                 .raw_types = {
7292                         /* int */
7293                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
7294                         /* static int t */
7295                         BTF_VAR_ENC(NAME_NTH(1), 1, 0),                 /* [2] */
7296                         /* void f(int a1, int a2) */
7297                         BTF_FUNC_PROTO_ENC(0, 2),                       /* [3] */
7298                                 BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(2), 1),
7299                                 BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(3), 1),
7300                         BTF_FUNC_ENC(NAME_NTH(4), 2),                   /* [4] */
7301                         /* tag -> t */
7302                         BTF_DECL_TAG_ENC(NAME_NTH(5), 2, -1),           /* [5] */
7303                         BTF_DECL_TAG_ENC(NAME_NTH(5), 2, -1),           /* [6] */
7304                         /* tag -> func */
7305                         BTF_DECL_TAG_ENC(NAME_NTH(5), 4, -1),           /* [7] */
7306                         BTF_DECL_TAG_ENC(NAME_NTH(5), 4, -1),           /* [8] */
7307                         /* tag -> func arg a1 */
7308                         BTF_DECL_TAG_ENC(NAME_NTH(5), 4, 1),            /* [9] */
7309                         BTF_DECL_TAG_ENC(NAME_NTH(5), 4, 1),            /* [10] */
7310                         BTF_END_RAW,
7311                 },
7312                 BTF_STR_SEC("\0t\0a1\0a2\0f\0tag"),
7313         },
7314         .expect = {
7315                 .raw_types = {
7316                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
7317                         BTF_VAR_ENC(NAME_NTH(1), 1, 0),                 /* [2] */
7318                         BTF_FUNC_PROTO_ENC(0, 2),                       /* [3] */
7319                                 BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(2), 1),
7320                                 BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(3), 1),
7321                         BTF_FUNC_ENC(NAME_NTH(4), 2),                   /* [4] */
7322                         BTF_DECL_TAG_ENC(NAME_NTH(5), 2, -1),           /* [5] */
7323                         BTF_DECL_TAG_ENC(NAME_NTH(5), 4, -1),           /* [6] */
7324                         BTF_DECL_TAG_ENC(NAME_NTH(5), 4, 1),            /* [7] */
7325                         BTF_END_RAW,
7326                 },
7327                 BTF_STR_SEC("\0t\0a1\0a2\0f\0tag"),
7328         },
7329 },
7330 {
7331         .descr = "dedup: func/func_param tags",
7332         .input = {
7333                 .raw_types = {
7334                         /* int */
7335                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
7336                         /* void f(int a1, int a2) */
7337                         BTF_FUNC_PROTO_ENC(0, 2),                       /* [2] */
7338                                 BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(1), 1),
7339                                 BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(2), 1),
7340                         BTF_FUNC_ENC(NAME_NTH(3), 2),                   /* [3] */
7341                         /* void f(int a1, int a2) */
7342                         BTF_FUNC_PROTO_ENC(0, 2),                       /* [4] */
7343                                 BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(1), 1),
7344                                 BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(2), 1),
7345                         BTF_FUNC_ENC(NAME_NTH(3), 4),                   /* [5] */
7346                         /* tag -> f: tag1, tag2 */
7347                         BTF_DECL_TAG_ENC(NAME_NTH(4), 3, -1),           /* [6] */
7348                         BTF_DECL_TAG_ENC(NAME_NTH(5), 3, -1),           /* [7] */
7349                         /* tag -> f/a2: tag1, tag2 */
7350                         BTF_DECL_TAG_ENC(NAME_NTH(4), 3, 1),            /* [8] */
7351                         BTF_DECL_TAG_ENC(NAME_NTH(5), 3, 1),            /* [9] */
7352                         /* tag -> f: tag1, tag3 */
7353                         BTF_DECL_TAG_ENC(NAME_NTH(4), 5, -1),           /* [10] */
7354                         BTF_DECL_TAG_ENC(NAME_NTH(6), 5, -1),           /* [11] */
7355                         /* tag -> f/a2: tag1, tag3 */
7356                         BTF_DECL_TAG_ENC(NAME_NTH(4), 5, 1),            /* [12] */
7357                         BTF_DECL_TAG_ENC(NAME_NTH(6), 5, 1),            /* [13] */
7358                         BTF_END_RAW,
7359                 },
7360                 BTF_STR_SEC("\0a1\0a2\0f\0tag1\0tag2\0tag3"),
7361         },
7362         .expect = {
7363                 .raw_types = {
7364                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
7365                         BTF_FUNC_PROTO_ENC(0, 2),                       /* [2] */
7366                                 BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(1), 1),
7367                                 BTF_FUNC_PROTO_ARG_ENC(NAME_NTH(2), 1),
7368                         BTF_FUNC_ENC(NAME_NTH(3), 2),                   /* [3] */
7369                         BTF_DECL_TAG_ENC(NAME_NTH(4), 3, -1),           /* [4] */
7370                         BTF_DECL_TAG_ENC(NAME_NTH(5), 3, -1),           /* [5] */
7371                         BTF_DECL_TAG_ENC(NAME_NTH(6), 3, -1),           /* [6] */
7372                         BTF_DECL_TAG_ENC(NAME_NTH(4), 3, 1),            /* [7] */
7373                         BTF_DECL_TAG_ENC(NAME_NTH(5), 3, 1),            /* [8] */
7374                         BTF_DECL_TAG_ENC(NAME_NTH(6), 3, 1),            /* [9] */
7375                         BTF_END_RAW,
7376                 },
7377                 BTF_STR_SEC("\0a1\0a2\0f\0tag1\0tag2\0tag3"),
7378         },
7379 },
7380 {
7381         .descr = "dedup: struct/struct_member tags",
7382         .input = {
7383                 .raw_types = {
7384                         /* int */
7385                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
7386                         BTF_STRUCT_ENC(NAME_NTH(1), 2, 8),              /* [2] */
7387                                 BTF_MEMBER_ENC(NAME_NTH(2), 1, 0),
7388                                 BTF_MEMBER_ENC(NAME_NTH(3), 1, 32),
7389                         BTF_STRUCT_ENC(NAME_NTH(1), 2, 8),              /* [3] */
7390                                 BTF_MEMBER_ENC(NAME_NTH(2), 1, 0),
7391                                 BTF_MEMBER_ENC(NAME_NTH(3), 1, 32),
7392                         /* tag -> t: tag1, tag2 */
7393                         BTF_DECL_TAG_ENC(NAME_NTH(4), 2, -1),           /* [4] */
7394                         BTF_DECL_TAG_ENC(NAME_NTH(5), 2, -1),           /* [5] */
7395                         /* tag -> t/m2: tag1, tag2 */
7396                         BTF_DECL_TAG_ENC(NAME_NTH(4), 2, 1),            /* [6] */
7397                         BTF_DECL_TAG_ENC(NAME_NTH(5), 2, 1),            /* [7] */
7398                         /* tag -> t: tag1, tag3 */
7399                         BTF_DECL_TAG_ENC(NAME_NTH(4), 3, -1),           /* [8] */
7400                         BTF_DECL_TAG_ENC(NAME_NTH(6), 3, -1),           /* [9] */
7401                         /* tag -> t/m2: tag1, tag3 */
7402                         BTF_DECL_TAG_ENC(NAME_NTH(4), 3, 1),            /* [10] */
7403                         BTF_DECL_TAG_ENC(NAME_NTH(6), 3, 1),            /* [11] */
7404                         BTF_END_RAW,
7405                 },
7406                 BTF_STR_SEC("\0t\0m1\0m2\0tag1\0tag2\0tag3"),
7407         },
7408         .expect = {
7409                 .raw_types = {
7410                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
7411                         BTF_STRUCT_ENC(NAME_NTH(1), 2, 8),              /* [2] */
7412                                 BTF_MEMBER_ENC(NAME_NTH(2), 1, 0),
7413                                 BTF_MEMBER_ENC(NAME_NTH(3), 1, 32),
7414                         BTF_DECL_TAG_ENC(NAME_NTH(4), 2, -1),           /* [3] */
7415                         BTF_DECL_TAG_ENC(NAME_NTH(5), 2, -1),           /* [4] */
7416                         BTF_DECL_TAG_ENC(NAME_NTH(6), 2, -1),           /* [5] */
7417                         BTF_DECL_TAG_ENC(NAME_NTH(4), 2, 1),            /* [6] */
7418                         BTF_DECL_TAG_ENC(NAME_NTH(5), 2, 1),            /* [7] */
7419                         BTF_DECL_TAG_ENC(NAME_NTH(6), 2, 1),            /* [8] */
7420                         BTF_END_RAW,
7421                 },
7422                 BTF_STR_SEC("\0t\0m1\0m2\0tag1\0tag2\0tag3"),
7423         },
7424 },
7425 {
7426         .descr = "dedup: typedef tags",
7427         .input = {
7428                 .raw_types = {
7429                         /* int */
7430                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
7431                         BTF_TYPEDEF_ENC(NAME_NTH(1), 1),                /* [2] */
7432                         BTF_TYPEDEF_ENC(NAME_NTH(1), 1),                /* [3] */
7433                         /* tag -> t: tag1, tag2 */
7434                         BTF_DECL_TAG_ENC(NAME_NTH(2), 2, -1),           /* [4] */
7435                         BTF_DECL_TAG_ENC(NAME_NTH(3), 2, -1),           /* [5] */
7436                         /* tag -> t: tag1, tag3 */
7437                         BTF_DECL_TAG_ENC(NAME_NTH(2), 3, -1),           /* [6] */
7438                         BTF_DECL_TAG_ENC(NAME_NTH(4), 3, -1),           /* [7] */
7439                         BTF_END_RAW,
7440                 },
7441                 BTF_STR_SEC("\0t\0tag1\0tag2\0tag3"),
7442         },
7443         .expect = {
7444                 .raw_types = {
7445                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
7446                         BTF_TYPEDEF_ENC(NAME_NTH(1), 1),                /* [2] */
7447                         BTF_DECL_TAG_ENC(NAME_NTH(2), 2, -1),           /* [3] */
7448                         BTF_DECL_TAG_ENC(NAME_NTH(3), 2, -1),           /* [4] */
7449                         BTF_DECL_TAG_ENC(NAME_NTH(4), 2, -1),           /* [5] */
7450                         BTF_END_RAW,
7451                 },
7452                 BTF_STR_SEC("\0t\0tag1\0tag2\0tag3"),
7453         },
7454 },
7455 {
7456         .descr = "dedup: btf_type_tag #1",
7457         .input = {
7458                 .raw_types = {
7459                         /* ptr -> tag2 -> tag1 -> int */
7460                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
7461                         BTF_TYPE_TAG_ENC(NAME_NTH(1), 1),               /* [2] */
7462                         BTF_TYPE_TAG_ENC(NAME_NTH(2), 2),               /* [3] */
7463                         BTF_PTR_ENC(3),                                 /* [4] */
7464                         /* ptr -> tag2 -> tag1 -> int */
7465                         BTF_TYPE_TAG_ENC(NAME_NTH(1), 1),               /* [5] */
7466                         BTF_TYPE_TAG_ENC(NAME_NTH(2), 5),               /* [6] */
7467                         BTF_PTR_ENC(6),                                 /* [7] */
7468                         /* ptr -> tag1 -> int */
7469                         BTF_TYPE_TAG_ENC(NAME_NTH(1), 1),               /* [8] */
7470                         BTF_PTR_ENC(8),                                 /* [9] */
7471                         BTF_END_RAW,
7472                 },
7473                 BTF_STR_SEC("\0tag1\0tag2"),
7474         },
7475         .expect = {
7476                 .raw_types = {
7477                         /* ptr -> tag2 -> tag1 -> int */
7478                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
7479                         BTF_TYPE_TAG_ENC(NAME_NTH(1), 1),               /* [2] */
7480                         BTF_TYPE_TAG_ENC(NAME_NTH(2), 2),               /* [3] */
7481                         BTF_PTR_ENC(3),                                 /* [4] */
7482                         /* ptr -> tag1 -> int */
7483                         BTF_PTR_ENC(2),                                 /* [5] */
7484                         BTF_END_RAW,
7485                 },
7486                 BTF_STR_SEC("\0tag1\0tag2"),
7487         },
7488 },
7489 {
7490         .descr = "dedup: btf_type_tag #2",
7491         .input = {
7492                 .raw_types = {
7493                         /* ptr -> tag2 -> tag1 -> int */
7494                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
7495                         BTF_TYPE_TAG_ENC(NAME_NTH(1), 1),               /* [2] */
7496                         BTF_TYPE_TAG_ENC(NAME_NTH(2), 2),               /* [3] */
7497                         BTF_PTR_ENC(3),                                 /* [4] */
7498                         /* ptr -> tag2 -> int */
7499                         BTF_TYPE_TAG_ENC(NAME_NTH(2), 1),               /* [5] */
7500                         BTF_PTR_ENC(5),                                 /* [6] */
7501                         BTF_END_RAW,
7502                 },
7503                 BTF_STR_SEC("\0tag1\0tag2"),
7504         },
7505         .expect = {
7506                 .raw_types = {
7507                         /* ptr -> tag2 -> tag1 -> int */
7508                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
7509                         BTF_TYPE_TAG_ENC(NAME_NTH(1), 1),               /* [2] */
7510                         BTF_TYPE_TAG_ENC(NAME_NTH(2), 2),               /* [3] */
7511                         BTF_PTR_ENC(3),                                 /* [4] */
7512                         /* ptr -> tag2 -> int */
7513                         BTF_TYPE_TAG_ENC(NAME_NTH(2), 1),               /* [5] */
7514                         BTF_PTR_ENC(5),                                 /* [6] */
7515                         BTF_END_RAW,
7516                 },
7517                 BTF_STR_SEC("\0tag1\0tag2"),
7518         },
7519 },
7520 {
7521         .descr = "dedup: btf_type_tag #3",
7522         .input = {
7523                 .raw_types = {
7524                         /* ptr -> tag2 -> tag1 -> int */
7525                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
7526                         BTF_TYPE_TAG_ENC(NAME_NTH(1), 1),               /* [2] */
7527                         BTF_TYPE_TAG_ENC(NAME_NTH(2), 2),               /* [3] */
7528                         BTF_PTR_ENC(3),                                 /* [4] */
7529                         /* ptr -> tag1 -> tag2 -> int */
7530                         BTF_TYPE_TAG_ENC(NAME_NTH(2), 1),               /* [5] */
7531                         BTF_TYPE_TAG_ENC(NAME_NTH(1), 5),               /* [6] */
7532                         BTF_PTR_ENC(6),                                 /* [7] */
7533                         BTF_END_RAW,
7534                 },
7535                 BTF_STR_SEC("\0tag1\0tag2"),
7536         },
7537         .expect = {
7538                 .raw_types = {
7539                         /* ptr -> tag2 -> tag1 -> int */
7540                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
7541                         BTF_TYPE_TAG_ENC(NAME_NTH(1), 1),               /* [2] */
7542                         BTF_TYPE_TAG_ENC(NAME_NTH(2), 2),               /* [3] */
7543                         BTF_PTR_ENC(3),                                 /* [4] */
7544                         /* ptr -> tag1 -> tag2 -> int */
7545                         BTF_TYPE_TAG_ENC(NAME_NTH(2), 1),               /* [5] */
7546                         BTF_TYPE_TAG_ENC(NAME_NTH(1), 5),               /* [6] */
7547                         BTF_PTR_ENC(6),                                 /* [7] */
7548                         BTF_END_RAW,
7549                 },
7550                 BTF_STR_SEC("\0tag1\0tag2"),
7551         },
7552 },
7553 {
7554         .descr = "dedup: btf_type_tag #4",
7555         .input = {
7556                 .raw_types = {
7557                         /* ptr -> tag1 -> int */
7558                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
7559                         BTF_TYPE_TAG_ENC(NAME_NTH(1), 1),               /* [2] */
7560                         BTF_PTR_ENC(2),                                 /* [3] */
7561                         /* ptr -> tag1 -> long */
7562                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 64, 8),  /* [4] */
7563                         BTF_TYPE_TAG_ENC(NAME_NTH(1), 4),               /* [5] */
7564                         BTF_PTR_ENC(5),                                 /* [6] */
7565                         BTF_END_RAW,
7566                 },
7567                 BTF_STR_SEC("\0tag1"),
7568         },
7569         .expect = {
7570                 .raw_types = {
7571                         /* ptr -> tag1 -> int */
7572                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),  /* [1] */
7573                         BTF_TYPE_TAG_ENC(NAME_NTH(1), 1),               /* [2] */
7574                         BTF_PTR_ENC(2),                                 /* [3] */
7575                         /* ptr -> tag1 -> long */
7576                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 64, 8),  /* [4] */
7577                         BTF_TYPE_TAG_ENC(NAME_NTH(1), 4),               /* [5] */
7578                         BTF_PTR_ENC(5),                                 /* [6] */
7579                         BTF_END_RAW,
7580                 },
7581                 BTF_STR_SEC("\0tag1"),
7582         },
7583 },
7584 {
7585         .descr = "dedup: btf_type_tag #5, struct",
7586         .input = {
7587                 .raw_types = {
7588                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                          /* [1] */
7589                         BTF_TYPE_TAG_ENC(NAME_NTH(1), 1),                                       /* [2] */
7590                         BTF_TYPE_ENC(NAME_NTH(2), BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 1), 4),      /* [3] */
7591                         BTF_MEMBER_ENC(NAME_NTH(3), 2, BTF_MEMBER_OFFSET(0, 0)),
7592                         BTF_TYPE_TAG_ENC(NAME_NTH(1), 1),                                       /* [4] */
7593                         BTF_TYPE_ENC(NAME_NTH(2), BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 1), 4),      /* [5] */
7594                         BTF_MEMBER_ENC(NAME_NTH(3), 4, BTF_MEMBER_OFFSET(0, 0)),
7595                         BTF_END_RAW,
7596                 },
7597                 BTF_STR_SEC("\0tag1\0t\0m"),
7598         },
7599         .expect = {
7600                 .raw_types = {
7601                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4),                          /* [1] */
7602                         BTF_TYPE_TAG_ENC(NAME_NTH(1), 1),                                       /* [2] */
7603                         BTF_TYPE_ENC(NAME_NTH(2), BTF_INFO_ENC(BTF_KIND_STRUCT, 1, 1), 4),      /* [3] */
7604                         BTF_MEMBER_ENC(NAME_NTH(3), 2, BTF_MEMBER_OFFSET(0, 0)),
7605                         BTF_END_RAW,
7606                 },
7607                 BTF_STR_SEC("\0tag1\0t\0m"),
7608         },
7609 },
7610 {
7611         .descr = "dedup: enum64, standalone",
7612         .input = {
7613                 .raw_types = {
7614                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 1), 8),
7615                                 BTF_ENUM64_ENC(NAME_NTH(2), 1, 123),
7616                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 1), 8),
7617                                 BTF_ENUM64_ENC(NAME_NTH(2), 1, 123),
7618                         BTF_END_RAW,
7619                 },
7620                 BTF_STR_SEC("\0e1\0e1_val"),
7621         },
7622         .expect = {
7623                 .raw_types = {
7624                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 1), 8),
7625                                 BTF_ENUM64_ENC(NAME_NTH(2), 1, 123),
7626                         BTF_END_RAW,
7627                 },
7628                 BTF_STR_SEC("\0e1\0e1_val"),
7629         },
7630 },
7631 {
7632         .descr = "dedup: enum64, fwd resolution",
7633         .input = {
7634                 .raw_types = {
7635                         /* [1] fwd enum64 'e1' before full enum */
7636                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 0), 8),
7637                         /* [2] full enum64 'e1' after fwd */
7638                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 1), 8),
7639                                 BTF_ENUM64_ENC(NAME_NTH(2), 1, 123),
7640                         /* [3] full enum64 'e2' before fwd */
7641                         BTF_TYPE_ENC(NAME_NTH(3), BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 1), 8),
7642                                 BTF_ENUM64_ENC(NAME_NTH(4), 0, 456),
7643                         /* [4] fwd enum64 'e2' after full enum */
7644                         BTF_TYPE_ENC(NAME_NTH(3), BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 0), 8),
7645                         /* [5] incompatible full enum64 with different value */
7646                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 1), 8),
7647                                 BTF_ENUM64_ENC(NAME_NTH(2), 0, 321),
7648                         BTF_END_RAW,
7649                 },
7650                 BTF_STR_SEC("\0e1\0e1_val\0e2\0e2_val"),
7651         },
7652         .expect = {
7653                 .raw_types = {
7654                         /* [1] full enum64 'e1' */
7655                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 1), 8),
7656                                 BTF_ENUM64_ENC(NAME_NTH(2), 1, 123),
7657                         /* [2] full enum64 'e2' */
7658                         BTF_TYPE_ENC(NAME_NTH(3), BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 1), 8),
7659                                 BTF_ENUM64_ENC(NAME_NTH(4), 0, 456),
7660                         /* [3] incompatible full enum64 with different value */
7661                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 1), 8),
7662                                 BTF_ENUM64_ENC(NAME_NTH(2), 0, 321),
7663                         BTF_END_RAW,
7664                 },
7665                 BTF_STR_SEC("\0e1\0e1_val\0e2\0e2_val"),
7666         },
7667 },
7668 {
7669         .descr = "dedup: enum and enum64, no dedup",
7670         .input = {
7671                 .raw_types = {
7672                         /* [1] enum 'e1' */
7673                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4),
7674                                 BTF_ENUM_ENC(NAME_NTH(2), 1),
7675                         /* [2] enum64 'e1' */
7676                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 1), 4),
7677                                 BTF_ENUM64_ENC(NAME_NTH(2), 1, 0),
7678                         BTF_END_RAW,
7679                 },
7680                 BTF_STR_SEC("\0e1\0e1_val"),
7681         },
7682         .expect = {
7683                 .raw_types = {
7684                         /* [1] enum 'e1' */
7685                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4),
7686                                 BTF_ENUM_ENC(NAME_NTH(2), 1),
7687                         /* [2] enum64 'e1' */
7688                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 1), 4),
7689                                 BTF_ENUM64_ENC(NAME_NTH(2), 1, 0),
7690                         BTF_END_RAW,
7691                 },
7692                 BTF_STR_SEC("\0e1\0e1_val"),
7693         },
7694 },
7695 {
7696         .descr = "dedup: enum of different size: no dedup",
7697         .input = {
7698                 .raw_types = {
7699                         /* [1] enum 'e1' */
7700                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4),
7701                                 BTF_ENUM_ENC(NAME_NTH(2), 1),
7702                         /* [2] enum 'e1' */
7703                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 2),
7704                                 BTF_ENUM_ENC(NAME_NTH(2), 1),
7705                         BTF_END_RAW,
7706                 },
7707                 BTF_STR_SEC("\0e1\0e1_val"),
7708         },
7709         .expect = {
7710                 .raw_types = {
7711                         /* [1] enum 'e1' */
7712                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4),
7713                                 BTF_ENUM_ENC(NAME_NTH(2), 1),
7714                         /* [2] enum 'e1' */
7715                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 2),
7716                                 BTF_ENUM_ENC(NAME_NTH(2), 1),
7717                         BTF_END_RAW,
7718                 },
7719                 BTF_STR_SEC("\0e1\0e1_val"),
7720         },
7721 },
7722 {
7723         .descr = "dedup: enum fwd to enum64",
7724         .input = {
7725                 .raw_types = {
7726                         /* [1] enum64 'e1' */
7727                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 1), 8),
7728                                 BTF_ENUM64_ENC(NAME_NTH(2), 1, 0),
7729                         /* [2] enum 'e1' fwd */
7730                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM, 0, 0), 4),
7731                         /* [3] typedef enum 'e1' td */
7732                         BTF_TYPE_ENC(NAME_NTH(3), BTF_INFO_ENC(BTF_KIND_TYPEDEF, 0, 0), 2),
7733                         BTF_END_RAW,
7734                 },
7735                 BTF_STR_SEC("\0e1\0e1_val\0td"),
7736         },
7737         .expect = {
7738                 .raw_types = {
7739                         /* [1] enum64 'e1' */
7740                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 1), 8),
7741                                 BTF_ENUM64_ENC(NAME_NTH(2), 1, 0),
7742                         /* [2] typedef enum 'e1' td */
7743                         BTF_TYPE_ENC(NAME_NTH(3), BTF_INFO_ENC(BTF_KIND_TYPEDEF, 0, 0), 1),
7744                         BTF_END_RAW,
7745                 },
7746                 BTF_STR_SEC("\0e1\0e1_val\0td"),
7747         },
7748 },
7749 {
7750         .descr = "dedup: enum64 fwd to enum",
7751         .input = {
7752                 .raw_types = {
7753                         /* [1] enum 'e1' */
7754                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4),
7755                                 BTF_ENUM_ENC(NAME_NTH(2), 1),
7756                         /* [2] enum64 'e1' fwd */
7757                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM64, 0, 0), 8),
7758                         /* [3] typedef enum 'e1' td */
7759                         BTF_TYPE_ENC(NAME_NTH(3), BTF_INFO_ENC(BTF_KIND_TYPEDEF, 0, 0), 2),
7760                         BTF_END_RAW,
7761                 },
7762                 BTF_STR_SEC("\0e1\0e1_val\0td"),
7763         },
7764         .expect = {
7765                 .raw_types = {
7766                         /* [1] enum 'e1' */
7767                         BTF_TYPE_ENC(NAME_NTH(1), BTF_INFO_ENC(BTF_KIND_ENUM, 0, 1), 4),
7768                                 BTF_ENUM_ENC(NAME_NTH(2), 1),
7769                         /* [2] typedef enum 'e1' td */
7770                         BTF_TYPE_ENC(NAME_NTH(3), BTF_INFO_ENC(BTF_KIND_TYPEDEF, 0, 0), 1),
7771                         BTF_END_RAW,
7772                 },
7773                 BTF_STR_SEC("\0e1\0e1_val\0td"),
7774         },
7775 },
7776 {
7777         .descr = "dedup: standalone fwd declaration struct",
7778         /*
7779          * Verify that CU1:foo and CU2:foo would be unified and that
7780          * typedef/ptr would be updated to point to CU1:foo.
7781          *
7782          * // CU 1:
7783          * struct foo { int x; };
7784          *
7785          * // CU 2:
7786          * struct foo;
7787          * typedef struct foo *foo_ptr;
7788          */
7789         .input = {
7790                 .raw_types = {
7791                         /* CU 1 */
7792                         BTF_STRUCT_ENC(NAME_NTH(1), 1, 4),             /* [1] */
7793                         BTF_MEMBER_ENC(NAME_NTH(2), 2, 0),
7794                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [2] */
7795                         /* CU 2 */
7796                         BTF_FWD_ENC(NAME_NTH(1), 0),                   /* [3] */
7797                         BTF_PTR_ENC(3),                                /* [4] */
7798                         BTF_TYPEDEF_ENC(NAME_NTH(3), 4),               /* [5] */
7799                         BTF_END_RAW,
7800                 },
7801                 BTF_STR_SEC("\0foo\0x\0foo_ptr"),
7802         },
7803         .expect = {
7804                 .raw_types = {
7805                         BTF_STRUCT_ENC(NAME_NTH(1), 1, 4),             /* [1] */
7806                         BTF_MEMBER_ENC(NAME_NTH(2), 2, 0),
7807                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [2] */
7808                         BTF_PTR_ENC(1),                                /* [3] */
7809                         BTF_TYPEDEF_ENC(NAME_NTH(3), 3),               /* [4] */
7810                         BTF_END_RAW,
7811                 },
7812                 BTF_STR_SEC("\0foo\0x\0foo_ptr"),
7813         },
7814 },
7815 {
7816         .descr = "dedup: standalone fwd declaration union",
7817         /*
7818          * Verify that CU1:foo and CU2:foo would be unified and that
7819          * typedef/ptr would be updated to point to CU1:foo.
7820          * Same as "dedup: standalone fwd declaration struct" but for unions.
7821          *
7822          * // CU 1:
7823          * union foo { int x; };
7824          *
7825          * // CU 2:
7826          * union foo;
7827          * typedef union foo *foo_ptr;
7828          */
7829         .input = {
7830                 .raw_types = {
7831                         /* CU 1 */
7832                         BTF_UNION_ENC(NAME_NTH(1), 1, 4),              /* [1] */
7833                         BTF_MEMBER_ENC(NAME_NTH(2), 2, 0),
7834                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [2] */
7835                         /* CU 2 */
7836                         BTF_FWD_ENC(NAME_TBD, 1),                      /* [3] */
7837                         BTF_PTR_ENC(3),                                /* [4] */
7838                         BTF_TYPEDEF_ENC(NAME_NTH(3), 4),               /* [5] */
7839                         BTF_END_RAW,
7840                 },
7841                 BTF_STR_SEC("\0foo\0x\0foo_ptr"),
7842         },
7843         .expect = {
7844                 .raw_types = {
7845                         BTF_UNION_ENC(NAME_NTH(1), 1, 4),              /* [1] */
7846                         BTF_MEMBER_ENC(NAME_NTH(2), 2, 0),
7847                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [2] */
7848                         BTF_PTR_ENC(1),                                /* [3] */
7849                         BTF_TYPEDEF_ENC(NAME_NTH(3), 3),               /* [4] */
7850                         BTF_END_RAW,
7851                 },
7852                 BTF_STR_SEC("\0foo\0x\0foo_ptr"),
7853         },
7854 },
7855 {
7856         .descr = "dedup: standalone fwd declaration wrong kind",
7857         /*
7858          * Negative test for btf_dedup_resolve_fwds:
7859          * - CU1:foo is a struct, C2:foo is a union, thus CU2:foo is not deduped;
7860          * - typedef/ptr should remain unchanged as well.
7861          *
7862          * // CU 1:
7863          * struct foo { int x; };
7864          *
7865          * // CU 2:
7866          * union foo;
7867          * typedef union foo *foo_ptr;
7868          */
7869         .input = {
7870                 .raw_types = {
7871                         /* CU 1 */
7872                         BTF_STRUCT_ENC(NAME_NTH(1), 1, 4),             /* [1] */
7873                         BTF_MEMBER_ENC(NAME_NTH(2), 2, 0),
7874                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [2] */
7875                         /* CU 2 */
7876                         BTF_FWD_ENC(NAME_NTH(3), 1),                   /* [3] */
7877                         BTF_PTR_ENC(3),                                /* [4] */
7878                         BTF_TYPEDEF_ENC(NAME_NTH(3), 4),               /* [5] */
7879                         BTF_END_RAW,
7880                 },
7881                 BTF_STR_SEC("\0foo\0x\0foo_ptr"),
7882         },
7883         .expect = {
7884                 .raw_types = {
7885                         /* CU 1 */
7886                         BTF_STRUCT_ENC(NAME_NTH(1), 1, 4),             /* [1] */
7887                         BTF_MEMBER_ENC(NAME_NTH(2), 2, 0),
7888                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [2] */
7889                         /* CU 2 */
7890                         BTF_FWD_ENC(NAME_NTH(3), 1),                   /* [3] */
7891                         BTF_PTR_ENC(3),                                /* [4] */
7892                         BTF_TYPEDEF_ENC(NAME_NTH(3), 4),               /* [5] */
7893                         BTF_END_RAW,
7894                 },
7895                 BTF_STR_SEC("\0foo\0x\0foo_ptr"),
7896         },
7897 },
7898 {
7899         .descr = "dedup: standalone fwd declaration name conflict",
7900         /*
7901          * Negative test for btf_dedup_resolve_fwds:
7902          * - two candidates for CU2:foo dedup, thus it is unchanged;
7903          * - typedef/ptr should remain unchanged as well.
7904          *
7905          * // CU 1:
7906          * struct foo { int x; };
7907          *
7908          * // CU 2:
7909          * struct foo;
7910          * typedef struct foo *foo_ptr;
7911          *
7912          * // CU 3:
7913          * struct foo { int x; int y; };
7914          */
7915         .input = {
7916                 .raw_types = {
7917                         /* CU 1 */
7918                         BTF_STRUCT_ENC(NAME_NTH(1), 1, 4),             /* [1] */
7919                         BTF_MEMBER_ENC(NAME_NTH(2), 2, 0),
7920                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [2] */
7921                         /* CU 2 */
7922                         BTF_FWD_ENC(NAME_NTH(1), 0),                   /* [3] */
7923                         BTF_PTR_ENC(3),                                /* [4] */
7924                         BTF_TYPEDEF_ENC(NAME_NTH(4), 4),               /* [5] */
7925                         /* CU 3 */
7926                         BTF_STRUCT_ENC(NAME_NTH(1), 2, 8),             /* [6] */
7927                         BTF_MEMBER_ENC(NAME_NTH(2), 2, 0),
7928                         BTF_MEMBER_ENC(NAME_NTH(3), 2, 0),
7929                         BTF_END_RAW,
7930                 },
7931                 BTF_STR_SEC("\0foo\0x\0y\0foo_ptr"),
7932         },
7933         .expect = {
7934                 .raw_types = {
7935                         /* CU 1 */
7936                         BTF_STRUCT_ENC(NAME_NTH(1), 1, 4),             /* [1] */
7937                         BTF_MEMBER_ENC(NAME_NTH(2), 2, 0),
7938                         BTF_TYPE_INT_ENC(0, BTF_INT_SIGNED, 0, 32, 4), /* [2] */
7939                         /* CU 2 */
7940                         BTF_FWD_ENC(NAME_NTH(1), 0),                   /* [3] */
7941                         BTF_PTR_ENC(3),                                /* [4] */
7942                         BTF_TYPEDEF_ENC(NAME_NTH(4), 4),               /* [5] */
7943                         /* CU 3 */
7944                         BTF_STRUCT_ENC(NAME_NTH(1), 2, 8),             /* [6] */
7945                         BTF_MEMBER_ENC(NAME_NTH(2), 2, 0),
7946                         BTF_MEMBER_ENC(NAME_NTH(3), 2, 0),
7947                         BTF_END_RAW,
7948                 },
7949                 BTF_STR_SEC("\0foo\0x\0y\0foo_ptr"),
7950         },
7951 },
7952 };
7953
7954 static int btf_type_size(const struct btf_type *t)
7955 {
7956         int base_size = sizeof(struct btf_type);
7957         __u16 vlen = BTF_INFO_VLEN(t->info);
7958         __u16 kind = BTF_INFO_KIND(t->info);
7959
7960         switch (kind) {
7961         case BTF_KIND_FWD:
7962         case BTF_KIND_CONST:
7963         case BTF_KIND_VOLATILE:
7964         case BTF_KIND_RESTRICT:
7965         case BTF_KIND_PTR:
7966         case BTF_KIND_TYPEDEF:
7967         case BTF_KIND_FUNC:
7968         case BTF_KIND_FLOAT:
7969         case BTF_KIND_TYPE_TAG:
7970                 return base_size;
7971         case BTF_KIND_INT:
7972                 return base_size + sizeof(__u32);
7973         case BTF_KIND_ENUM:
7974                 return base_size + vlen * sizeof(struct btf_enum);
7975         case BTF_KIND_ENUM64:
7976                 return base_size + vlen * sizeof(struct btf_enum64);
7977         case BTF_KIND_ARRAY:
7978                 return base_size + sizeof(struct btf_array);
7979         case BTF_KIND_STRUCT:
7980         case BTF_KIND_UNION:
7981                 return base_size + vlen * sizeof(struct btf_member);
7982         case BTF_KIND_FUNC_PROTO:
7983                 return base_size + vlen * sizeof(struct btf_param);
7984         case BTF_KIND_VAR:
7985                 return base_size + sizeof(struct btf_var);
7986         case BTF_KIND_DATASEC:
7987                 return base_size + vlen * sizeof(struct btf_var_secinfo);
7988         case BTF_KIND_DECL_TAG:
7989                 return base_size + sizeof(struct btf_decl_tag);
7990         default:
7991                 fprintf(stderr, "Unsupported BTF_KIND:%u\n", kind);
7992                 return -EINVAL;
7993         }
7994 }
7995
7996 static void dump_btf_strings(const char *strs, __u32 len)
7997 {
7998         const char *cur = strs;
7999         int i = 0;
8000
8001         while (cur < strs + len) {
8002                 fprintf(stderr, "string #%d: '%s'\n", i, cur);
8003                 cur += strlen(cur) + 1;
8004                 i++;
8005         }
8006 }
8007
8008 static void do_test_dedup(unsigned int test_num)
8009 {
8010         struct btf_dedup_test *test = &dedup_tests[test_num - 1];
8011         __u32 test_nr_types, expect_nr_types, test_btf_size, expect_btf_size;
8012         const struct btf_header *test_hdr, *expect_hdr;
8013         struct btf *test_btf = NULL, *expect_btf = NULL;
8014         const void *test_btf_data, *expect_btf_data;
8015         const char *ret_test_next_str, *ret_expect_next_str;
8016         const char *test_strs, *expect_strs;
8017         const char *test_str_cur;
8018         const char *expect_str_cur, *expect_str_end;
8019         unsigned int raw_btf_size;
8020         void *raw_btf;
8021         int err = 0, i;
8022
8023         if (!test__start_subtest(test->descr))
8024                 return;
8025
8026         raw_btf = btf_raw_create(&hdr_tmpl, test->input.raw_types,
8027                                  test->input.str_sec, test->input.str_sec_size,
8028                                  &raw_btf_size, &ret_test_next_str);
8029         if (!raw_btf)
8030                 return;
8031
8032         test_btf = btf__new((__u8 *)raw_btf, raw_btf_size);
8033         err = libbpf_get_error(test_btf);
8034         free(raw_btf);
8035         if (CHECK(err, "invalid test_btf errno:%d", err)) {
8036                 err = -1;
8037                 goto done;
8038         }
8039
8040         raw_btf = btf_raw_create(&hdr_tmpl, test->expect.raw_types,
8041                                  test->expect.str_sec,
8042                                  test->expect.str_sec_size,
8043                                  &raw_btf_size, &ret_expect_next_str);
8044         if (!raw_btf)
8045                 return;
8046         expect_btf = btf__new((__u8 *)raw_btf, raw_btf_size);
8047         err = libbpf_get_error(expect_btf);
8048         free(raw_btf);
8049         if (CHECK(err, "invalid expect_btf errno:%d", err)) {
8050                 err = -1;
8051                 goto done;
8052         }
8053
8054         test->opts.sz = sizeof(test->opts);
8055         err = btf__dedup(test_btf, &test->opts);
8056         if (CHECK(err, "btf_dedup failed errno:%d", err)) {
8057                 err = -1;
8058                 goto done;
8059         }
8060
8061         test_btf_data = btf__raw_data(test_btf, &test_btf_size);
8062         expect_btf_data = btf__raw_data(expect_btf, &expect_btf_size);
8063         if (CHECK(test_btf_size != expect_btf_size,
8064                   "test_btf_size:%u != expect_btf_size:%u",
8065                   test_btf_size, expect_btf_size)) {
8066                 err = -1;
8067                 goto done;
8068         }
8069
8070         test_hdr = test_btf_data;
8071         test_strs = test_btf_data + sizeof(*test_hdr) + test_hdr->str_off;
8072         expect_hdr = expect_btf_data;
8073         expect_strs = expect_btf_data + sizeof(*test_hdr) + expect_hdr->str_off;
8074         if (CHECK(test_hdr->str_len != expect_hdr->str_len,
8075                   "test_hdr->str_len:%u != expect_hdr->str_len:%u",
8076                   test_hdr->str_len, expect_hdr->str_len)) {
8077                 fprintf(stderr, "\ntest strings:\n");
8078                 dump_btf_strings(test_strs, test_hdr->str_len);
8079                 fprintf(stderr, "\nexpected strings:\n");
8080                 dump_btf_strings(expect_strs, expect_hdr->str_len);
8081                 err = -1;
8082                 goto done;
8083         }
8084
8085         expect_str_cur = expect_strs;
8086         expect_str_end = expect_strs + expect_hdr->str_len;
8087         while (expect_str_cur < expect_str_end) {
8088                 size_t test_len, expect_len;
8089                 int off;
8090
8091                 off = btf__find_str(test_btf, expect_str_cur);
8092                 if (CHECK(off < 0, "exp str '%s' not found: %d\n", expect_str_cur, off)) {
8093                         err = -1;
8094                         goto done;
8095                 }
8096                 test_str_cur = btf__str_by_offset(test_btf, off);
8097
8098                 test_len = strlen(test_str_cur);
8099                 expect_len = strlen(expect_str_cur);
8100                 if (CHECK(test_len != expect_len,
8101                           "test_len:%zu != expect_len:%zu "
8102                           "(test_str:%s, expect_str:%s)",
8103                           test_len, expect_len, test_str_cur, expect_str_cur)) {
8104                         err = -1;
8105                         goto done;
8106                 }
8107                 if (CHECK(strcmp(test_str_cur, expect_str_cur),
8108                           "test_str:%s != expect_str:%s",
8109                           test_str_cur, expect_str_cur)) {
8110                         err = -1;
8111                         goto done;
8112                 }
8113                 expect_str_cur += expect_len + 1;
8114         }
8115
8116         test_nr_types = btf__type_cnt(test_btf);
8117         expect_nr_types = btf__type_cnt(expect_btf);
8118         if (CHECK(test_nr_types != expect_nr_types,
8119                   "test_nr_types:%u != expect_nr_types:%u",
8120                   test_nr_types, expect_nr_types)) {
8121                 err = -1;
8122                 goto done;
8123         }
8124
8125         for (i = 1; i < test_nr_types; i++) {
8126                 const struct btf_type *test_type, *expect_type;
8127                 int test_size, expect_size;
8128
8129                 test_type = btf__type_by_id(test_btf, i);
8130                 expect_type = btf__type_by_id(expect_btf, i);
8131                 test_size = btf_type_size(test_type);
8132                 expect_size = btf_type_size(expect_type);
8133
8134                 if (CHECK(test_size != expect_size,
8135                           "type #%d: test_size:%d != expect_size:%u",
8136                           i, test_size, expect_size)) {
8137                         err = -1;
8138                         goto done;
8139                 }
8140                 if (CHECK(btf_kind(test_type) != btf_kind(expect_type),
8141                           "type %d kind: exp %d != got %u\n",
8142                           i, btf_kind(expect_type), btf_kind(test_type))) {
8143                         err = -1;
8144                         goto done;
8145                 }
8146                 if (CHECK(test_type->info != expect_type->info,
8147                           "type %d info: exp %d != got %u\n",
8148                           i, expect_type->info, test_type->info)) {
8149                         err = -1;
8150                         goto done;
8151                 }
8152                 if (CHECK(test_type->size != expect_type->size,
8153                           "type %d size/type: exp %d != got %u\n",
8154                           i, expect_type->size, test_type->size)) {
8155                         err = -1;
8156                         goto done;
8157                 }
8158         }
8159
8160 done:
8161         btf__free(test_btf);
8162         btf__free(expect_btf);
8163 }
8164
8165 void test_btf(void)
8166 {
8167         int i;
8168
8169         always_log = env.verbosity > VERBOSE_NONE;
8170
8171         for (i = 1; i <= ARRAY_SIZE(raw_tests); i++)
8172                 do_test_raw(i);
8173         for (i = 1; i <= ARRAY_SIZE(get_info_tests); i++)
8174                 do_test_get_info(i);
8175         for (i = 1; i <= ARRAY_SIZE(file_tests); i++)
8176                 do_test_file(i);
8177         for (i = 1; i <= ARRAY_SIZE(info_raw_tests); i++)
8178                 do_test_info_raw(i);
8179         for (i = 1; i <= ARRAY_SIZE(dedup_tests); i++)
8180                 do_test_dedup(i);
8181         test_pprint();
8182 }