--- /dev/null
+// SPDX-License-Identifier: GPL-2.0
+/* Converted from tools/testing/selftests/bpf/verifier/value_ptr_arith.c */
+
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+#include <errno.h>
+#include "bpf_misc.h"
+
+#define MAX_ENTRIES 11
+
+struct test_val {
+ unsigned int index;
+ int foo[MAX_ENTRIES];
+};
+
+struct {
+ __uint(type, BPF_MAP_TYPE_ARRAY);
+ __uint(max_entries, 1);
+ __type(key, int);
+ __type(value, struct test_val);
+} map_array_48b SEC(".maps");
+
+struct other_val {
+ long long foo;
+ long long bar;
+};
+
+struct {
+ __uint(type, BPF_MAP_TYPE_HASH);
+ __uint(max_entries, 1);
+ __type(key, long long);
+ __type(value, struct other_val);
+} map_hash_16b SEC(".maps");
+
+struct {
+ __uint(type, BPF_MAP_TYPE_HASH);
+ __uint(max_entries, 1);
+ __type(key, long long);
+ __type(value, struct test_val);
+} map_hash_48b SEC(".maps");
+
+SEC("socket")
+__description("map access: known scalar += value_ptr unknown vs const")
+__success __failure_unpriv
+__msg_unpriv("R1 tried to add from different maps, paths or scalars")
+__retval(1)
+__naked void value_ptr_unknown_vs_const(void)
+{
+ asm volatile (" \
+ r0 = *(u32*)(r1 + %[__sk_buff_len]); \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ if r0 == 1 goto l0_%=; \
+ r1 = %[map_hash_16b] ll; \
+ if r0 != 1 goto l1_%=; \
+l0_%=: r1 = %[map_array_48b] ll; \
+l1_%=: call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l2_%=; \
+ r4 = *(u8*)(r0 + 0); \
+ if r4 == 1 goto l3_%=; \
+ r1 = 6; \
+ r1 = -r1; \
+ r1 &= 0x7; \
+ goto l4_%=; \
+l3_%=: r1 = 3; \
+l4_%=: r1 += r0; \
+ r0 = *(u8*)(r1 + 0); \
+l2_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b),
+ __imm_addr(map_hash_16b),
+ __imm_const(__sk_buff_len, offsetof(struct __sk_buff, len))
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: known scalar += value_ptr const vs unknown")
+__success __failure_unpriv
+__msg_unpriv("R1 tried to add from different maps, paths or scalars")
+__retval(1)
+__naked void value_ptr_const_vs_unknown(void)
+{
+ asm volatile (" \
+ r0 = *(u32*)(r1 + %[__sk_buff_len]); \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ if r0 == 1 goto l0_%=; \
+ r1 = %[map_hash_16b] ll; \
+ if r0 != 1 goto l1_%=; \
+l0_%=: r1 = %[map_array_48b] ll; \
+l1_%=: call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l2_%=; \
+ r4 = *(u8*)(r0 + 0); \
+ if r4 == 1 goto l3_%=; \
+ r1 = 3; \
+ goto l4_%=; \
+l3_%=: r1 = 6; \
+ r1 = -r1; \
+ r1 &= 0x7; \
+l4_%=: r1 += r0; \
+ r0 = *(u8*)(r1 + 0); \
+l2_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b),
+ __imm_addr(map_hash_16b),
+ __imm_const(__sk_buff_len, offsetof(struct __sk_buff, len))
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: known scalar += value_ptr const vs const (ne)")
+__success __failure_unpriv
+__msg_unpriv("R1 tried to add from different maps, paths or scalars")
+__retval(1)
+__naked void ptr_const_vs_const_ne(void)
+{
+ asm volatile (" \
+ r0 = *(u32*)(r1 + %[__sk_buff_len]); \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ if r0 == 1 goto l0_%=; \
+ r1 = %[map_hash_16b] ll; \
+ if r0 != 1 goto l1_%=; \
+l0_%=: r1 = %[map_array_48b] ll; \
+l1_%=: call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l2_%=; \
+ r4 = *(u8*)(r0 + 0); \
+ if r4 == 1 goto l3_%=; \
+ r1 = 3; \
+ goto l4_%=; \
+l3_%=: r1 = 5; \
+l4_%=: r1 += r0; \
+ r0 = *(u8*)(r1 + 0); \
+l2_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b),
+ __imm_addr(map_hash_16b),
+ __imm_const(__sk_buff_len, offsetof(struct __sk_buff, len))
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: known scalar += value_ptr const vs const (eq)")
+__success __success_unpriv __retval(1)
+__naked void ptr_const_vs_const_eq(void)
+{
+ asm volatile (" \
+ r0 = *(u32*)(r1 + %[__sk_buff_len]); \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ if r0 == 1 goto l0_%=; \
+ r1 = %[map_hash_16b] ll; \
+ if r0 != 1 goto l1_%=; \
+l0_%=: r1 = %[map_array_48b] ll; \
+l1_%=: call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l2_%=; \
+ r4 = *(u8*)(r0 + 0); \
+ if r4 == 1 goto l3_%=; \
+ r1 = 5; \
+ goto l4_%=; \
+l3_%=: r1 = 5; \
+l4_%=: r1 += r0; \
+ r0 = *(u8*)(r1 + 0); \
+l2_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b),
+ __imm_addr(map_hash_16b),
+ __imm_const(__sk_buff_len, offsetof(struct __sk_buff, len))
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: known scalar += value_ptr unknown vs unknown (eq)")
+__success __success_unpriv __retval(1)
+__naked void ptr_unknown_vs_unknown_eq(void)
+{
+ asm volatile (" \
+ r0 = *(u32*)(r1 + %[__sk_buff_len]); \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ if r0 == 1 goto l0_%=; \
+ r1 = %[map_hash_16b] ll; \
+ if r0 != 1 goto l1_%=; \
+l0_%=: r1 = %[map_array_48b] ll; \
+l1_%=: call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l2_%=; \
+ r4 = *(u8*)(r0 + 0); \
+ if r4 == 1 goto l3_%=; \
+ r1 = 6; \
+ r1 = -r1; \
+ r1 &= 0x7; \
+ goto l4_%=; \
+l3_%=: r1 = 6; \
+ r1 = -r1; \
+ r1 &= 0x7; \
+l4_%=: r1 += r0; \
+ r0 = *(u8*)(r1 + 0); \
+l2_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b),
+ __imm_addr(map_hash_16b),
+ __imm_const(__sk_buff_len, offsetof(struct __sk_buff, len))
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: known scalar += value_ptr unknown vs unknown (lt)")
+__success __failure_unpriv
+__msg_unpriv("R1 tried to add from different maps, paths or scalars")
+__retval(1)
+__naked void ptr_unknown_vs_unknown_lt(void)
+{
+ asm volatile (" \
+ r0 = *(u32*)(r1 + %[__sk_buff_len]); \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ if r0 == 1 goto l0_%=; \
+ r1 = %[map_hash_16b] ll; \
+ if r0 != 1 goto l1_%=; \
+l0_%=: r1 = %[map_array_48b] ll; \
+l1_%=: call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l2_%=; \
+ r4 = *(u8*)(r0 + 0); \
+ if r4 == 1 goto l3_%=; \
+ r1 = 6; \
+ r1 = -r1; \
+ r1 &= 0x3; \
+ goto l4_%=; \
+l3_%=: r1 = 6; \
+ r1 = -r1; \
+ r1 &= 0x7; \
+l4_%=: r1 += r0; \
+ r0 = *(u8*)(r1 + 0); \
+l2_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b),
+ __imm_addr(map_hash_16b),
+ __imm_const(__sk_buff_len, offsetof(struct __sk_buff, len))
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: known scalar += value_ptr unknown vs unknown (gt)")
+__success __failure_unpriv
+__msg_unpriv("R1 tried to add from different maps, paths or scalars")
+__retval(1)
+__naked void ptr_unknown_vs_unknown_gt(void)
+{
+ asm volatile (" \
+ r0 = *(u32*)(r1 + %[__sk_buff_len]); \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ if r0 == 1 goto l0_%=; \
+ r1 = %[map_hash_16b] ll; \
+ if r0 != 1 goto l1_%=; \
+l0_%=: r1 = %[map_array_48b] ll; \
+l1_%=: call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l2_%=; \
+ r4 = *(u8*)(r0 + 0); \
+ if r4 == 1 goto l3_%=; \
+ r1 = 6; \
+ r1 = -r1; \
+ r1 &= 0x7; \
+ goto l4_%=; \
+l3_%=: r1 = 6; \
+ r1 = -r1; \
+ r1 &= 0x3; \
+l4_%=: r1 += r0; \
+ r0 = *(u8*)(r1 + 0); \
+l2_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b),
+ __imm_addr(map_hash_16b),
+ __imm_const(__sk_buff_len, offsetof(struct __sk_buff, len))
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: known scalar += value_ptr from different maps")
+__success __success_unpriv __retval(1)
+__naked void value_ptr_from_different_maps(void)
+{
+ asm volatile (" \
+ r0 = *(u32*)(r1 + %[__sk_buff_len]); \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ if r0 == 1 goto l0_%=; \
+ r1 = %[map_hash_16b] ll; \
+ if r0 != 1 goto l1_%=; \
+l0_%=: r1 = %[map_array_48b] ll; \
+l1_%=: call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l2_%=; \
+ r1 = 4; \
+ r1 += r0; \
+ r0 = *(u8*)(r1 + 0); \
+l2_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b),
+ __imm_addr(map_hash_16b),
+ __imm_const(__sk_buff_len, offsetof(struct __sk_buff, len))
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr -= known scalar from different maps")
+__success __failure_unpriv
+__msg_unpriv("R0 min value is outside of the allowed memory range")
+__retval(1)
+__naked void known_scalar_from_different_maps(void)
+{
+ asm volatile (" \
+ r0 = *(u32*)(r1 + %[__sk_buff_len]); \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ if r0 == 1 goto l0_%=; \
+ r1 = %[map_hash_16b] ll; \
+ if r0 != 1 goto l1_%=; \
+l0_%=: r1 = %[map_array_48b] ll; \
+l1_%=: call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l2_%=; \
+ r1 = 4; \
+ r0 -= r1; \
+ r0 += r1; \
+ r0 = *(u8*)(r0 + 0); \
+l2_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b),
+ __imm_addr(map_hash_16b),
+ __imm_const(__sk_buff_len, offsetof(struct __sk_buff, len))
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: known scalar += value_ptr from different maps, but same value properties")
+__success __success_unpriv __retval(1)
+__naked void maps_but_same_value_properties(void)
+{
+ asm volatile (" \
+ r0 = *(u32*)(r1 + %[__sk_buff_len]); \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ if r0 == 1 goto l0_%=; \
+ r1 = %[map_hash_48b] ll; \
+ if r0 != 1 goto l1_%=; \
+l0_%=: r1 = %[map_array_48b] ll; \
+l1_%=: call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l2_%=; \
+ r1 = 4; \
+ r1 += r0; \
+ r0 = *(u8*)(r1 + 0); \
+l2_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b),
+ __imm_addr(map_hash_48b),
+ __imm_const(__sk_buff_len, offsetof(struct __sk_buff, len))
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: mixing value pointer and scalar, 1")
+__success __failure_unpriv __msg_unpriv("R2 pointer comparison prohibited")
+__retval(0)
+__naked void value_pointer_and_scalar_1(void)
+{
+ asm volatile (" \
+ /* load map value pointer into r0 and r2 */ \
+ r0 = 1; \
+ r1 = %[map_array_48b] ll; \
+ r2 = r10; \
+ r2 += -16; \
+ r6 = 0; \
+ *(u64*)(r10 - 16) = r6; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 != 0 goto l0_%=; \
+ exit; \
+l0_%=: /* load some number from the map into r1 */ \
+ r1 = *(u8*)(r0 + 0); \
+ /* depending on r1, branch: */ \
+ if r1 != 0 goto l1_%=; \
+ /* branch A */ \
+ r2 = r0; \
+ r3 = 0; \
+ goto l2_%=; \
+l1_%=: /* branch B */ \
+ r2 = 0; \
+ r3 = 0x100000; \
+l2_%=: /* common instruction */ \
+ r2 += r3; \
+ /* depending on r1, branch: */ \
+ if r1 != 0 goto l3_%=; \
+ /* branch A */ \
+ goto l4_%=; \
+l3_%=: /* branch B */ \
+ r0 = 0x13371337; \
+ /* verifier follows fall-through */ \
+ if r2 != 0x100000 goto l4_%=; \
+ r0 = 0; \
+ exit; \
+l4_%=: /* fake-dead code; targeted from branch A to \
+ * prevent dead code sanitization \
+ */ \
+ r0 = *(u8*)(r0 + 0); \
+ r0 = 0; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: mixing value pointer and scalar, 2")
+__success __failure_unpriv __msg_unpriv("R0 invalid mem access 'scalar'")
+__retval(0)
+__naked void value_pointer_and_scalar_2(void)
+{
+ asm volatile (" \
+ /* load map value pointer into r0 and r2 */ \
+ r0 = 1; \
+ r1 = %[map_array_48b] ll; \
+ r2 = r10; \
+ r2 += -16; \
+ r6 = 0; \
+ *(u64*)(r10 - 16) = r6; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 != 0 goto l0_%=; \
+ exit; \
+l0_%=: /* load some number from the map into r1 */ \
+ r1 = *(u8*)(r0 + 0); \
+ /* depending on r1, branch: */ \
+ if r1 == 0 goto l1_%=; \
+ /* branch A */ \
+ r2 = 0; \
+ r3 = 0x100000; \
+ goto l2_%=; \
+l1_%=: /* branch B */ \
+ r2 = r0; \
+ r3 = 0; \
+l2_%=: /* common instruction */ \
+ r2 += r3; \
+ /* depending on r1, branch: */ \
+ if r1 != 0 goto l3_%=; \
+ /* branch A */ \
+ goto l4_%=; \
+l3_%=: /* branch B */ \
+ r0 = 0x13371337; \
+ /* verifier follows fall-through */ \
+ if r2 != 0x100000 goto l4_%=; \
+ r0 = 0; \
+ exit; \
+l4_%=: /* fake-dead code; targeted from branch A to \
+ * prevent dead code sanitization, rejected \
+ * via branch B however \
+ */ \
+ r0 = *(u8*)(r0 + 0); \
+ r0 = 0; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("sanitation: alu with different scalars 1")
+__success __success_unpriv __retval(0x100000)
+__naked void alu_with_different_scalars_1(void)
+{
+ asm volatile (" \
+ r0 = 1; \
+ r1 = %[map_array_48b] ll; \
+ r2 = r10; \
+ r2 += -16; \
+ r6 = 0; \
+ *(u64*)(r10 - 16) = r6; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 != 0 goto l0_%=; \
+ exit; \
+l0_%=: r1 = *(u32*)(r0 + 0); \
+ if r1 == 0 goto l1_%=; \
+ r2 = 0; \
+ r3 = 0x100000; \
+ goto l2_%=; \
+l1_%=: r2 = 42; \
+ r3 = 0x100001; \
+l2_%=: r2 += r3; \
+ r0 = r2; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("sanitation: alu with different scalars 2")
+__success __success_unpriv __retval(0)
+__naked void alu_with_different_scalars_2(void)
+{
+ asm volatile (" \
+ r0 = 1; \
+ r1 = %[map_array_48b] ll; \
+ r6 = r1; \
+ r2 = r10; \
+ r2 += -16; \
+ r7 = 0; \
+ *(u64*)(r10 - 16) = r7; \
+ call %[bpf_map_delete_elem]; \
+ r7 = r0; \
+ r1 = r6; \
+ r2 = r10; \
+ r2 += -16; \
+ call %[bpf_map_delete_elem]; \
+ r6 = r0; \
+ r8 = r6; \
+ r8 += r7; \
+ r0 = r8; \
+ r0 += %[einval]; \
+ r0 += %[einval]; \
+ exit; \
+" :
+ : __imm(bpf_map_delete_elem),
+ __imm_addr(map_array_48b),
+ __imm_const(einval, EINVAL)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("sanitation: alu with different scalars 3")
+__success __success_unpriv __retval(0)
+__naked void alu_with_different_scalars_3(void)
+{
+ asm volatile (" \
+ r0 = %[einval]; \
+ r0 *= -1; \
+ r7 = r0; \
+ r0 = %[einval]; \
+ r0 *= -1; \
+ r6 = r0; \
+ r8 = r6; \
+ r8 += r7; \
+ r0 = r8; \
+ r0 += %[einval]; \
+ r0 += %[einval]; \
+ exit; \
+" :
+ : __imm_const(einval, EINVAL)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr += known scalar, upper oob arith, test 1")
+__success __failure_unpriv
+__msg_unpriv("R0 pointer arithmetic of map value goes out of range")
+__retval(1)
+__naked void upper_oob_arith_test_1(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = 48; \
+ r0 += r1; \
+ r0 -= r1; \
+ r0 = *(u8*)(r0 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr += known scalar, upper oob arith, test 2")
+__success __failure_unpriv
+__msg_unpriv("R0 pointer arithmetic of map value goes out of range")
+__retval(1)
+__naked void upper_oob_arith_test_2(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = 49; \
+ r0 += r1; \
+ r0 -= r1; \
+ r0 = *(u8*)(r0 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr += known scalar, upper oob arith, test 3")
+__success __success_unpriv __retval(1)
+__naked void upper_oob_arith_test_3(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = 47; \
+ r0 += r1; \
+ r0 -= r1; \
+ r0 = *(u8*)(r0 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr -= known scalar, lower oob arith, test 1")
+__failure __msg("R0 min value is outside of the allowed memory range")
+__failure_unpriv
+__msg_unpriv("R0 pointer arithmetic of map value goes out of range")
+__naked void lower_oob_arith_test_1(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = 47; \
+ r0 += r1; \
+ r1 = 48; \
+ r0 -= r1; \
+ r0 = *(u8*)(r0 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr -= known scalar, lower oob arith, test 2")
+__success __failure_unpriv
+__msg_unpriv("R0 pointer arithmetic of map value goes out of range")
+__retval(1)
+__naked void lower_oob_arith_test_2(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = 47; \
+ r0 += r1; \
+ r1 = 48; \
+ r0 -= r1; \
+ r1 = 1; \
+ r0 += r1; \
+ r0 = *(u8*)(r0 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr -= known scalar, lower oob arith, test 3")
+__success __success_unpriv __retval(1)
+__naked void lower_oob_arith_test_3(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = 47; \
+ r0 += r1; \
+ r1 = 47; \
+ r0 -= r1; \
+ r0 = *(u8*)(r0 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: known scalar += value_ptr")
+__success __success_unpriv __retval(1)
+__naked void access_known_scalar_value_ptr_1(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = 4; \
+ r1 += r0; \
+ r0 = *(u8*)(r1 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr += known scalar, 1")
+__success __success_unpriv __retval(1)
+__naked void value_ptr_known_scalar_1(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = 4; \
+ r0 += r1; \
+ r1 = *(u8*)(r0 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr += known scalar, 2")
+__failure __msg("invalid access to map value")
+__failure_unpriv
+__naked void value_ptr_known_scalar_2_1(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = 49; \
+ r0 += r1; \
+ r1 = *(u8*)(r0 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr += known scalar, 3")
+__failure __msg("invalid access to map value")
+__failure_unpriv
+__naked void value_ptr_known_scalar_3(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = -1; \
+ r0 += r1; \
+ r1 = *(u8*)(r0 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr += known scalar, 4")
+__success __success_unpriv __retval(1)
+__naked void value_ptr_known_scalar_4(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = 5; \
+ r0 += r1; \
+ r1 = -2; \
+ r0 += r1; \
+ r1 = -1; \
+ r0 += r1; \
+ r1 = *(u8*)(r0 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr += known scalar, 5")
+__success __success_unpriv __retval(0xabcdef12)
+__naked void value_ptr_known_scalar_5(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = %[__imm_0]; \
+ r1 += r0; \
+ r0 = *(u32*)(r1 + 0); \
+l0_%=: exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b),
+ __imm_const(__imm_0, (6 + 1) * sizeof(int))
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr += known scalar, 6")
+__success __success_unpriv __retval(0xabcdef12)
+__naked void value_ptr_known_scalar_6(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = %[__imm_0]; \
+ r0 += r1; \
+ r1 = %[__imm_1]; \
+ r0 += r1; \
+ r0 = *(u32*)(r0 + 0); \
+l0_%=: exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b),
+ __imm_const(__imm_0, (3 + 1) * sizeof(int)),
+ __imm_const(__imm_1, 3 * sizeof(int))
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr += N, value_ptr -= N known scalar")
+__success __success_unpriv __retval(0x12345678)
+__naked void value_ptr_n_known_scalar(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ w1 = 0x12345678; \
+ *(u32*)(r0 + 0) = r1; \
+ r0 += 2; \
+ r1 = 2; \
+ r0 -= r1; \
+ r0 = *(u32*)(r0 + 0); \
+l0_%=: exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: unknown scalar += value_ptr, 1")
+__success __success_unpriv __retval(1)
+__naked void unknown_scalar_value_ptr_1(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = *(u8*)(r0 + 0); \
+ r1 &= 0xf; \
+ r1 += r0; \
+ r0 = *(u8*)(r1 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: unknown scalar += value_ptr, 2")
+__success __success_unpriv __retval(0xabcdef12) __flag(BPF_F_ANY_ALIGNMENT)
+__naked void unknown_scalar_value_ptr_2(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = *(u32*)(r0 + 0); \
+ r1 &= 31; \
+ r1 += r0; \
+ r0 = *(u32*)(r1 + 0); \
+l0_%=: exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: unknown scalar += value_ptr, 3")
+__success __failure_unpriv
+__msg_unpriv("R0 pointer arithmetic of map value goes out of range")
+__retval(0xabcdef12) __flag(BPF_F_ANY_ALIGNMENT)
+__naked void unknown_scalar_value_ptr_3(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = -1; \
+ r0 += r1; \
+ r1 = 1; \
+ r0 += r1; \
+ r1 = *(u32*)(r0 + 0); \
+ r1 &= 31; \
+ r1 += r0; \
+ r0 = *(u32*)(r1 + 0); \
+l0_%=: exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: unknown scalar += value_ptr, 4")
+__failure __msg("R1 max value is outside of the allowed memory range")
+__msg_unpriv("R1 pointer arithmetic of map value goes out of range")
+__flag(BPF_F_ANY_ALIGNMENT)
+__naked void unknown_scalar_value_ptr_4(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = 19; \
+ r0 += r1; \
+ r1 = *(u32*)(r0 + 0); \
+ r1 &= 31; \
+ r1 += r0; \
+ r0 = *(u32*)(r1 + 0); \
+l0_%=: exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr += unknown scalar, 1")
+__success __success_unpriv __retval(1)
+__naked void value_ptr_unknown_scalar_1(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = *(u8*)(r0 + 0); \
+ r1 &= 0xf; \
+ r0 += r1; \
+ r1 = *(u8*)(r0 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr += unknown scalar, 2")
+__success __success_unpriv __retval(0xabcdef12) __flag(BPF_F_ANY_ALIGNMENT)
+__naked void value_ptr_unknown_scalar_2_1(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = *(u32*)(r0 + 0); \
+ r1 &= 31; \
+ r0 += r1; \
+ r0 = *(u32*)(r0 + 0); \
+l0_%=: exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr += unknown scalar, 3")
+__success __success_unpriv __retval(1)
+__naked void value_ptr_unknown_scalar_3(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = *(u64*)(r0 + 0); \
+ r2 = *(u64*)(r0 + 8); \
+ r3 = *(u64*)(r0 + 16); \
+ r1 &= 0xf; \
+ r3 &= 1; \
+ r3 |= 1; \
+ if r2 > r3 goto l0_%=; \
+ r0 += r3; \
+ r0 = *(u8*)(r0 + 0); \
+ r0 = 1; \
+l1_%=: exit; \
+l0_%=: r0 = 2; \
+ goto l1_%=; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr += value_ptr")
+__failure __msg("R0 pointer += pointer prohibited")
+__failure_unpriv
+__naked void access_value_ptr_value_ptr_1(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r0 += r0; \
+ r1 = *(u8*)(r0 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: known scalar -= value_ptr")
+__failure __msg("R1 tried to subtract pointer from scalar")
+__failure_unpriv
+__naked void access_known_scalar_value_ptr_2(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = 4; \
+ r1 -= r0; \
+ r0 = *(u8*)(r1 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr -= known scalar")
+__failure __msg("R0 min value is outside of the allowed memory range")
+__failure_unpriv
+__naked void access_value_ptr_known_scalar(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = 4; \
+ r0 -= r1; \
+ r1 = *(u8*)(r0 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr -= known scalar, 2")
+__success __success_unpriv __retval(1)
+__naked void value_ptr_known_scalar_2_2(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = 6; \
+ r2 = 4; \
+ r0 += r1; \
+ r0 -= r2; \
+ r1 = *(u8*)(r0 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: unknown scalar -= value_ptr")
+__failure __msg("R1 tried to subtract pointer from scalar")
+__failure_unpriv
+__naked void access_unknown_scalar_value_ptr(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = *(u8*)(r0 + 0); \
+ r1 &= 0xf; \
+ r1 -= r0; \
+ r0 = *(u8*)(r1 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr -= unknown scalar")
+__failure __msg("R0 min value is negative")
+__failure_unpriv
+__naked void access_value_ptr_unknown_scalar(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = *(u8*)(r0 + 0); \
+ r1 &= 0xf; \
+ r0 -= r1; \
+ r1 = *(u8*)(r0 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr -= unknown scalar, 2")
+__success __failure_unpriv
+__msg_unpriv("R0 pointer arithmetic of map value goes out of range")
+__retval(1)
+__naked void value_ptr_unknown_scalar_2_2(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r1 = *(u8*)(r0 + 0); \
+ r1 &= 0xf; \
+ r1 |= 0x7; \
+ r0 += r1; \
+ r1 = *(u8*)(r0 + 0); \
+ r1 &= 0x7; \
+ r0 -= r1; \
+ r1 = *(u8*)(r0 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: value_ptr -= value_ptr")
+__failure __msg("R0 invalid mem access 'scalar'")
+__msg_unpriv("R0 pointer -= pointer prohibited")
+__naked void access_value_ptr_value_ptr_2(void)
+{
+ asm volatile (" \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 == 0 goto l0_%=; \
+ r0 -= r0; \
+ r1 = *(u8*)(r0 + 0); \
+l0_%=: r0 = 1; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("socket")
+__description("map access: trying to leak tainted dst reg")
+__failure __msg("math between map_value pointer and 4294967295 is not allowed")
+__failure_unpriv
+__naked void to_leak_tainted_dst_reg(void)
+{
+ asm volatile (" \
+ r0 = 0; \
+ r1 = 0; \
+ *(u64*)(r10 - 8) = r1; \
+ r2 = r10; \
+ r2 += -8; \
+ r1 = %[map_array_48b] ll; \
+ call %[bpf_map_lookup_elem]; \
+ if r0 != 0 goto l0_%=; \
+ exit; \
+l0_%=: r2 = r0; \
+ w1 = 0xFFFFFFFF; \
+ w1 = w1; \
+ r2 -= r1; \
+ *(u64*)(r0 + 0) = r2; \
+ r0 = 0; \
+ exit; \
+" :
+ : __imm(bpf_map_lookup_elem),
+ __imm_addr(map_array_48b)
+ : __clobber_all);
+}
+
+SEC("tc")
+__description("32bit pkt_ptr -= scalar")
+__success __retval(0) __flag(BPF_F_ANY_ALIGNMENT)
+__naked void _32bit_pkt_ptr_scalar(void)
+{
+ asm volatile (" \
+ r8 = *(u32*)(r1 + %[__sk_buff_data_end]); \
+ r7 = *(u32*)(r1 + %[__sk_buff_data]); \
+ r6 = r7; \
+ r6 += 40; \
+ if r6 > r8 goto l0_%=; \
+ w4 = w7; \
+ w6 -= w4; \
+l0_%=: r0 = 0; \
+ exit; \
+" :
+ : __imm_const(__sk_buff_data, offsetof(struct __sk_buff, data)),
+ __imm_const(__sk_buff_data_end, offsetof(struct __sk_buff, data_end))
+ : __clobber_all);
+}
+
+SEC("tc")
+__description("32bit scalar -= pkt_ptr")
+__success __retval(0) __flag(BPF_F_ANY_ALIGNMENT)
+__naked void _32bit_scalar_pkt_ptr(void)
+{
+ asm volatile (" \
+ r8 = *(u32*)(r1 + %[__sk_buff_data_end]); \
+ r7 = *(u32*)(r1 + %[__sk_buff_data]); \
+ r6 = r7; \
+ r6 += 40; \
+ if r6 > r8 goto l0_%=; \
+ w4 = w6; \
+ w4 -= w7; \
+l0_%=: r0 = 0; \
+ exit; \
+" :
+ : __imm_const(__sk_buff_data, offsetof(struct __sk_buff, data)),
+ __imm_const(__sk_buff_data_end, offsetof(struct __sk_buff, data_end))
+ : __clobber_all);
+}
+
+char _license[] SEC("license") = "GPL";
+++ /dev/null
-{
- "map access: known scalar += value_ptr unknown vs const",
- .insns = {
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
- offsetof(struct __sk_buff, len)),
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 1, 3),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 1, 2),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 9),
- BPF_LDX_MEM(BPF_B, BPF_REG_4, BPF_REG_0, 0),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_4, 1, 4),
- BPF_MOV64_IMM(BPF_REG_1, 6),
- BPF_ALU64_IMM(BPF_NEG, BPF_REG_1, 0),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0x7),
- BPF_JMP_IMM(BPF_JA, 0, 0, 1),
- BPF_MOV64_IMM(BPF_REG_1, 3),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_0),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_hash_16b = { 5 },
- .fixup_map_array_48b = { 8 },
- .result_unpriv = REJECT,
- .errstr_unpriv = "R1 tried to add from different maps, paths or scalars",
- .result = ACCEPT,
- .retval = 1,
-},
-{
- "map access: known scalar += value_ptr const vs unknown",
- .insns = {
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
- offsetof(struct __sk_buff, len)),
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 1, 3),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 1, 2),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 9),
- BPF_LDX_MEM(BPF_B, BPF_REG_4, BPF_REG_0, 0),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_4, 1, 2),
- BPF_MOV64_IMM(BPF_REG_1, 3),
- BPF_JMP_IMM(BPF_JA, 0, 0, 3),
- BPF_MOV64_IMM(BPF_REG_1, 6),
- BPF_ALU64_IMM(BPF_NEG, BPF_REG_1, 0),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0x7),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_0),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_hash_16b = { 5 },
- .fixup_map_array_48b = { 8 },
- .result_unpriv = REJECT,
- .errstr_unpriv = "R1 tried to add from different maps, paths or scalars",
- .result = ACCEPT,
- .retval = 1,
-},
-{
- "map access: known scalar += value_ptr const vs const (ne)",
- .insns = {
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
- offsetof(struct __sk_buff, len)),
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 1, 3),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 1, 2),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 7),
- BPF_LDX_MEM(BPF_B, BPF_REG_4, BPF_REG_0, 0),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_4, 1, 2),
- BPF_MOV64_IMM(BPF_REG_1, 3),
- BPF_JMP_IMM(BPF_JA, 0, 0, 1),
- BPF_MOV64_IMM(BPF_REG_1, 5),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_0),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_hash_16b = { 5 },
- .fixup_map_array_48b = { 8 },
- .result_unpriv = REJECT,
- .errstr_unpriv = "R1 tried to add from different maps, paths or scalars",
- .result = ACCEPT,
- .retval = 1,
-},
-{
- "map access: known scalar += value_ptr const vs const (eq)",
- .insns = {
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
- offsetof(struct __sk_buff, len)),
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 1, 3),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 1, 2),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 7),
- BPF_LDX_MEM(BPF_B, BPF_REG_4, BPF_REG_0, 0),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_4, 1, 2),
- BPF_MOV64_IMM(BPF_REG_1, 5),
- BPF_JMP_IMM(BPF_JA, 0, 0, 1),
- BPF_MOV64_IMM(BPF_REG_1, 5),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_0),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_hash_16b = { 5 },
- .fixup_map_array_48b = { 8 },
- .result = ACCEPT,
- .retval = 1,
-},
-{
- "map access: known scalar += value_ptr unknown vs unknown (eq)",
- .insns = {
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
- offsetof(struct __sk_buff, len)),
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 1, 3),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 1, 2),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 11),
- BPF_LDX_MEM(BPF_B, BPF_REG_4, BPF_REG_0, 0),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_4, 1, 4),
- BPF_MOV64_IMM(BPF_REG_1, 6),
- BPF_ALU64_IMM(BPF_NEG, BPF_REG_1, 0),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0x7),
- BPF_JMP_IMM(BPF_JA, 0, 0, 3),
- BPF_MOV64_IMM(BPF_REG_1, 6),
- BPF_ALU64_IMM(BPF_NEG, BPF_REG_1, 0),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0x7),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_0),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_hash_16b = { 5 },
- .fixup_map_array_48b = { 8 },
- .result = ACCEPT,
- .retval = 1,
-},
-{
- "map access: known scalar += value_ptr unknown vs unknown (lt)",
- .insns = {
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
- offsetof(struct __sk_buff, len)),
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 1, 3),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 1, 2),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 11),
- BPF_LDX_MEM(BPF_B, BPF_REG_4, BPF_REG_0, 0),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_4, 1, 4),
- BPF_MOV64_IMM(BPF_REG_1, 6),
- BPF_ALU64_IMM(BPF_NEG, BPF_REG_1, 0),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0x3),
- BPF_JMP_IMM(BPF_JA, 0, 0, 3),
- BPF_MOV64_IMM(BPF_REG_1, 6),
- BPF_ALU64_IMM(BPF_NEG, BPF_REG_1, 0),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0x7),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_0),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_hash_16b = { 5 },
- .fixup_map_array_48b = { 8 },
- .result_unpriv = REJECT,
- .errstr_unpriv = "R1 tried to add from different maps, paths or scalars",
- .result = ACCEPT,
- .retval = 1,
-},
-{
- "map access: known scalar += value_ptr unknown vs unknown (gt)",
- .insns = {
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
- offsetof(struct __sk_buff, len)),
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 1, 3),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 1, 2),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 11),
- BPF_LDX_MEM(BPF_B, BPF_REG_4, BPF_REG_0, 0),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_4, 1, 4),
- BPF_MOV64_IMM(BPF_REG_1, 6),
- BPF_ALU64_IMM(BPF_NEG, BPF_REG_1, 0),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0x7),
- BPF_JMP_IMM(BPF_JA, 0, 0, 3),
- BPF_MOV64_IMM(BPF_REG_1, 6),
- BPF_ALU64_IMM(BPF_NEG, BPF_REG_1, 0),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0x3),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_0),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_hash_16b = { 5 },
- .fixup_map_array_48b = { 8 },
- .result_unpriv = REJECT,
- .errstr_unpriv = "R1 tried to add from different maps, paths or scalars",
- .result = ACCEPT,
- .retval = 1,
-},
-{
- "map access: known scalar += value_ptr from different maps",
- .insns = {
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
- offsetof(struct __sk_buff, len)),
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 1, 3),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 1, 2),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3),
- BPF_MOV64_IMM(BPF_REG_1, 4),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_0),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_hash_16b = { 5 },
- .fixup_map_array_48b = { 8 },
- .result = ACCEPT,
- .retval = 1,
-},
-{
- "map access: value_ptr -= known scalar from different maps",
- .insns = {
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
- offsetof(struct __sk_buff, len)),
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 1, 3),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 1, 2),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
- BPF_MOV64_IMM(BPF_REG_1, 4),
- BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_hash_16b = { 5 },
- .fixup_map_array_48b = { 8 },
- .result = ACCEPT,
- .result_unpriv = REJECT,
- .errstr_unpriv = "R0 min value is outside of the allowed memory range",
- .retval = 1,
-},
-{
- "map access: known scalar += value_ptr from different maps, but same value properties",
- .insns = {
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1,
- offsetof(struct __sk_buff, len)),
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 1, 3),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 1, 2),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3),
- BPF_MOV64_IMM(BPF_REG_1, 4),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_0),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_hash_48b = { 5 },
- .fixup_map_array_48b = { 8 },
- .result = ACCEPT,
- .retval = 1,
-},
-{
- "map access: mixing value pointer and scalar, 1",
- .insns = {
- // load map value pointer into r0 and r2
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_LD_MAP_FD(BPF_REG_ARG1, 0),
- BPF_MOV64_REG(BPF_REG_ARG2, BPF_REG_FP),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_ARG2, -16),
- BPF_ST_MEM(BPF_DW, BPF_REG_FP, -16, 0),
- BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
- BPF_EXIT_INSN(),
- // load some number from the map into r1
- BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
- // depending on r1, branch:
- BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 3),
- // branch A
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_0),
- BPF_MOV64_IMM(BPF_REG_3, 0),
- BPF_JMP_A(2),
- // branch B
- BPF_MOV64_IMM(BPF_REG_2, 0),
- BPF_MOV64_IMM(BPF_REG_3, 0x100000),
- // common instruction
- BPF_ALU64_REG(BPF_ADD, BPF_REG_2, BPF_REG_3),
- // depending on r1, branch:
- BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 1),
- // branch A
- BPF_JMP_A(4),
- // branch B
- BPF_MOV64_IMM(BPF_REG_0, 0x13371337),
- // verifier follows fall-through
- BPF_JMP_IMM(BPF_JNE, BPF_REG_2, 0x100000, 2),
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- // fake-dead code; targeted from branch A to
- // prevent dead code sanitization
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 1 },
- .result = ACCEPT,
- .result_unpriv = REJECT,
- .errstr_unpriv = "R2 pointer comparison prohibited",
- .retval = 0,
-},
-{
- "map access: mixing value pointer and scalar, 2",
- .insns = {
- // load map value pointer into r0 and r2
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_LD_MAP_FD(BPF_REG_ARG1, 0),
- BPF_MOV64_REG(BPF_REG_ARG2, BPF_REG_FP),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_ARG2, -16),
- BPF_ST_MEM(BPF_DW, BPF_REG_FP, -16, 0),
- BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
- BPF_EXIT_INSN(),
- // load some number from the map into r1
- BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
- // depending on r1, branch:
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 3),
- // branch A
- BPF_MOV64_IMM(BPF_REG_2, 0),
- BPF_MOV64_IMM(BPF_REG_3, 0x100000),
- BPF_JMP_A(2),
- // branch B
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_0),
- BPF_MOV64_IMM(BPF_REG_3, 0),
- // common instruction
- BPF_ALU64_REG(BPF_ADD, BPF_REG_2, BPF_REG_3),
- // depending on r1, branch:
- BPF_JMP_IMM(BPF_JNE, BPF_REG_1, 0, 1),
- // branch A
- BPF_JMP_A(4),
- // branch B
- BPF_MOV64_IMM(BPF_REG_0, 0x13371337),
- // verifier follows fall-through
- BPF_JMP_IMM(BPF_JNE, BPF_REG_2, 0x100000, 2),
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- // fake-dead code; targeted from branch A to
- // prevent dead code sanitization, rejected
- // via branch B however
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 1 },
- .result = ACCEPT,
- .result_unpriv = REJECT,
- .errstr_unpriv = "R0 invalid mem access 'scalar'",
- .retval = 0,
-},
-{
- "sanitation: alu with different scalars 1",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_LD_MAP_FD(BPF_REG_ARG1, 0),
- BPF_MOV64_REG(BPF_REG_ARG2, BPF_REG_FP),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_ARG2, -16),
- BPF_ST_MEM(BPF_DW, BPF_REG_FP, -16, 0),
- BPF_EMIT_CALL(BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
- BPF_EXIT_INSN(),
- BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_1, 0, 3),
- BPF_MOV64_IMM(BPF_REG_2, 0),
- BPF_MOV64_IMM(BPF_REG_3, 0x100000),
- BPF_JMP_A(2),
- BPF_MOV64_IMM(BPF_REG_2, 42),
- BPF_MOV64_IMM(BPF_REG_3, 0x100001),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_2, BPF_REG_3),
- BPF_MOV64_REG(BPF_REG_0, BPF_REG_2),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 1 },
- .result = ACCEPT,
- .retval = 0x100000,
-},
-{
- "sanitation: alu with different scalars 2",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_MOV64_REG(BPF_REG_6, BPF_REG_1),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_FP),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -16),
- BPF_ST_MEM(BPF_DW, BPF_REG_FP, -16, 0),
- BPF_EMIT_CALL(BPF_FUNC_map_delete_elem),
- BPF_MOV64_REG(BPF_REG_7, BPF_REG_0),
- BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_FP),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -16),
- BPF_EMIT_CALL(BPF_FUNC_map_delete_elem),
- BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
- BPF_MOV64_REG(BPF_REG_8, BPF_REG_6),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_8, BPF_REG_7),
- BPF_MOV64_REG(BPF_REG_0, BPF_REG_8),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 1 },
- .result = ACCEPT,
- .retval = -EINVAL * 2,
-},
-{
- "sanitation: alu with different scalars 3",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_0, EINVAL),
- BPF_ALU64_IMM(BPF_MUL, BPF_REG_0, -1),
- BPF_MOV64_REG(BPF_REG_7, BPF_REG_0),
- BPF_MOV64_IMM(BPF_REG_0, EINVAL),
- BPF_ALU64_IMM(BPF_MUL, BPF_REG_0, -1),
- BPF_MOV64_REG(BPF_REG_6, BPF_REG_0),
- BPF_MOV64_REG(BPF_REG_8, BPF_REG_6),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_8, BPF_REG_7),
- BPF_MOV64_REG(BPF_REG_0, BPF_REG_8),
- BPF_EXIT_INSN(),
- },
- .result = ACCEPT,
- .retval = -EINVAL * 2,
-},
-{
- "map access: value_ptr += known scalar, upper oob arith, test 1",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
- BPF_MOV64_IMM(BPF_REG_1, 48),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = ACCEPT,
- .result_unpriv = REJECT,
- .errstr_unpriv = "R0 pointer arithmetic of map value goes out of range",
- .retval = 1,
-},
-{
- "map access: value_ptr += known scalar, upper oob arith, test 2",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
- BPF_MOV64_IMM(BPF_REG_1, 49),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = ACCEPT,
- .result_unpriv = REJECT,
- .errstr_unpriv = "R0 pointer arithmetic of map value goes out of range",
- .retval = 1,
-},
-{
- "map access: value_ptr += known scalar, upper oob arith, test 3",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
- BPF_MOV64_IMM(BPF_REG_1, 47),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = ACCEPT,
- .retval = 1,
-},
-{
- "map access: value_ptr -= known scalar, lower oob arith, test 1",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 5),
- BPF_MOV64_IMM(BPF_REG_1, 47),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_MOV64_IMM(BPF_REG_1, 48),
- BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = REJECT,
- .errstr = "R0 min value is outside of the allowed memory range",
- .result_unpriv = REJECT,
- .errstr_unpriv = "R0 pointer arithmetic of map value goes out of range",
-},
-{
- "map access: value_ptr -= known scalar, lower oob arith, test 2",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 7),
- BPF_MOV64_IMM(BPF_REG_1, 47),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_MOV64_IMM(BPF_REG_1, 48),
- BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
- BPF_MOV64_IMM(BPF_REG_1, 1),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = ACCEPT,
- .result_unpriv = REJECT,
- .errstr_unpriv = "R0 pointer arithmetic of map value goes out of range",
- .retval = 1,
-},
-{
- "map access: value_ptr -= known scalar, lower oob arith, test 3",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 5),
- BPF_MOV64_IMM(BPF_REG_1, 47),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_MOV64_IMM(BPF_REG_1, 47),
- BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = ACCEPT,
- .retval = 1,
-},
-{
- "map access: known scalar += value_ptr",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3),
- BPF_MOV64_IMM(BPF_REG_1, 4),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_0),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = ACCEPT,
- .retval = 1,
-},
-{
- "map access: value_ptr += known scalar, 1",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3),
- BPF_MOV64_IMM(BPF_REG_1, 4),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = ACCEPT,
- .retval = 1,
-},
-{
- "map access: value_ptr += known scalar, 2",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3),
- BPF_MOV64_IMM(BPF_REG_1, 49),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = REJECT,
- .errstr = "invalid access to map value",
-},
-{
- "map access: value_ptr += known scalar, 3",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3),
- BPF_MOV64_IMM(BPF_REG_1, -1),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = REJECT,
- .errstr = "invalid access to map value",
-},
-{
- "map access: value_ptr += known scalar, 4",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 7),
- BPF_MOV64_IMM(BPF_REG_1, 5),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_MOV64_IMM(BPF_REG_1, -2),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_MOV64_IMM(BPF_REG_1, -1),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = ACCEPT,
- .retval = 1,
-},
-{
- "map access: value_ptr += known scalar, 5",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3),
- BPF_MOV64_IMM(BPF_REG_1, (6 + 1) * sizeof(int)),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_0),
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, 0),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = ACCEPT,
- .retval = 0xabcdef12,
-},
-{
- "map access: value_ptr += known scalar, 6",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 5),
- BPF_MOV64_IMM(BPF_REG_1, (3 + 1) * sizeof(int)),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_MOV64_IMM(BPF_REG_1, 3 * sizeof(int)),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = ACCEPT,
- .retval = 0xabcdef12,
-},
-{
- "map access: value_ptr += N, value_ptr -= N known scalar",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 6),
- BPF_MOV32_IMM(BPF_REG_1, 0x12345678),
- BPF_STX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, 0),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_0, 2),
- BPF_MOV64_IMM(BPF_REG_1, 2),
- BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = ACCEPT,
- .retval = 0x12345678,
-},
-{
- "map access: unknown scalar += value_ptr, 1",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
- BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0xf),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_0),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = ACCEPT,
- .retval = 1,
-},
-{
- "map access: unknown scalar += value_ptr, 2",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
- BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 31),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_0),
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, 0),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = ACCEPT,
- .retval = 0xabcdef12,
- .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
-},
-{
- "map access: unknown scalar += value_ptr, 3",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 8),
- BPF_MOV64_IMM(BPF_REG_1, -1),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_MOV64_IMM(BPF_REG_1, 1),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 31),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_0),
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, 0),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = ACCEPT,
- .result_unpriv = REJECT,
- .errstr_unpriv = "R0 pointer arithmetic of map value goes out of range",
- .retval = 0xabcdef12,
- .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
-},
-{
- "map access: unknown scalar += value_ptr, 4",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 6),
- BPF_MOV64_IMM(BPF_REG_1, 19),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 31),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_1, BPF_REG_0),
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_1, 0),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = REJECT,
- .errstr = "R1 max value is outside of the allowed memory range",
- .errstr_unpriv = "R1 pointer arithmetic of map value goes out of range",
- .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
-},
-{
- "map access: value_ptr += unknown scalar, 1",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
- BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0xf),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = ACCEPT,
- .retval = 1,
-},
-{
- "map access: value_ptr += unknown scalar, 2",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
- BPF_LDX_MEM(BPF_W, BPF_REG_1, BPF_REG_0, 0),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 31),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_W, BPF_REG_0, BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = ACCEPT,
- .retval = 0xabcdef12,
- .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
-},
-{
- "map access: value_ptr += unknown scalar, 3",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 11),
- BPF_LDX_MEM(BPF_DW, BPF_REG_1, BPF_REG_0, 0),
- BPF_LDX_MEM(BPF_DW, BPF_REG_2, BPF_REG_0, 8),
- BPF_LDX_MEM(BPF_DW, BPF_REG_3, BPF_REG_0, 16),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0xf),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_3, 1),
- BPF_ALU64_IMM(BPF_OR, BPF_REG_3, 1),
- BPF_JMP_REG(BPF_JGT, BPF_REG_2, BPF_REG_3, 4),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_3),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- BPF_MOV64_IMM(BPF_REG_0, 2),
- BPF_JMP_IMM(BPF_JA, 0, 0, -3),
- },
- .fixup_map_array_48b = { 3 },
- .result = ACCEPT,
- .retval = 1,
-},
-{
- "map access: value_ptr += value_ptr",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_0),
- BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = REJECT,
- .errstr = "R0 pointer += pointer prohibited",
-},
-{
- "map access: known scalar -= value_ptr",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3),
- BPF_MOV64_IMM(BPF_REG_1, 4),
- BPF_ALU64_REG(BPF_SUB, BPF_REG_1, BPF_REG_0),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = REJECT,
- .errstr = "R1 tried to subtract pointer from scalar",
-},
-{
- "map access: value_ptr -= known scalar",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 3),
- BPF_MOV64_IMM(BPF_REG_1, 4),
- BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = REJECT,
- .errstr = "R0 min value is outside of the allowed memory range",
-},
-{
- "map access: value_ptr -= known scalar, 2",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 5),
- BPF_MOV64_IMM(BPF_REG_1, 6),
- BPF_MOV64_IMM(BPF_REG_2, 4),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_2),
- BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = ACCEPT,
- .retval = 1,
-},
-{
- "map access: unknown scalar -= value_ptr",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
- BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0xf),
- BPF_ALU64_REG(BPF_SUB, BPF_REG_1, BPF_REG_0),
- BPF_LDX_MEM(BPF_B, BPF_REG_0, BPF_REG_1, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = REJECT,
- .errstr = "R1 tried to subtract pointer from scalar",
-},
-{
- "map access: value_ptr -= unknown scalar",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 4),
- BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0xf),
- BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = REJECT,
- .errstr = "R0 min value is negative",
-},
-{
- "map access: value_ptr -= unknown scalar, 2",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 8),
- BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0xf),
- BPF_ALU64_IMM(BPF_OR, BPF_REG_1, 0x7),
- BPF_ALU64_REG(BPF_ADD, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
- BPF_ALU64_IMM(BPF_AND, BPF_REG_1, 0x7),
- BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_1),
- BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = ACCEPT,
- .result_unpriv = REJECT,
- .errstr_unpriv = "R0 pointer arithmetic of map value goes out of range",
- .retval = 1,
-},
-{
- "map access: value_ptr -= value_ptr",
- .insns = {
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JEQ, BPF_REG_0, 0, 2),
- BPF_ALU64_REG(BPF_SUB, BPF_REG_0, BPF_REG_0),
- BPF_LDX_MEM(BPF_B, BPF_REG_1, BPF_REG_0, 0),
- BPF_MOV64_IMM(BPF_REG_0, 1),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 3 },
- .result = REJECT,
- .errstr = "R0 invalid mem access 'scalar'",
- .errstr_unpriv = "R0 pointer -= pointer prohibited",
-},
-{
- "map access: trying to leak tainted dst reg",
- .insns = {
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_ST_MEM(BPF_DW, BPF_REG_10, -8, 0),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_10),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, -8),
- BPF_LD_MAP_FD(BPF_REG_1, 0),
- BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
- BPF_JMP_IMM(BPF_JNE, BPF_REG_0, 0, 1),
- BPF_EXIT_INSN(),
- BPF_MOV64_REG(BPF_REG_2, BPF_REG_0),
- BPF_MOV32_IMM(BPF_REG_1, 0xFFFFFFFF),
- BPF_MOV32_REG(BPF_REG_1, BPF_REG_1),
- BPF_ALU64_REG(BPF_SUB, BPF_REG_2, BPF_REG_1),
- BPF_STX_MEM(BPF_DW, BPF_REG_0, BPF_REG_2, 0),
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .fixup_map_array_48b = { 4 },
- .result = REJECT,
- .errstr = "math between map_value pointer and 4294967295 is not allowed",
-},
-{
- "32bit pkt_ptr -= scalar",
- .insns = {
- BPF_LDX_MEM(BPF_W, BPF_REG_8, BPF_REG_1,
- offsetof(struct __sk_buff, data_end)),
- BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
- offsetof(struct __sk_buff, data)),
- BPF_MOV64_REG(BPF_REG_6, BPF_REG_7),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 40),
- BPF_JMP_REG(BPF_JGT, BPF_REG_6, BPF_REG_8, 2),
- BPF_ALU32_REG(BPF_MOV, BPF_REG_4, BPF_REG_7),
- BPF_ALU32_REG(BPF_SUB, BPF_REG_6, BPF_REG_4),
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
- .result = ACCEPT,
- .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
-},
-{
- "32bit scalar -= pkt_ptr",
- .insns = {
- BPF_LDX_MEM(BPF_W, BPF_REG_8, BPF_REG_1,
- offsetof(struct __sk_buff, data_end)),
- BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
- offsetof(struct __sk_buff, data)),
- BPF_MOV64_REG(BPF_REG_6, BPF_REG_7),
- BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 40),
- BPF_JMP_REG(BPF_JGT, BPF_REG_6, BPF_REG_8, 2),
- BPF_ALU32_REG(BPF_MOV, BPF_REG_4, BPF_REG_6),
- BPF_ALU32_REG(BPF_SUB, BPF_REG_4, BPF_REG_7),
- BPF_MOV64_IMM(BPF_REG_0, 0),
- BPF_EXIT_INSN(),
- },
- .prog_type = BPF_PROG_TYPE_SCHED_CLS,
- .result = ACCEPT,
- .flags = F_NEEDS_EFFICIENT_UNALIGNED_ACCESS,
-},
projects / platform / kernel / linux-starfive.git / commitdiff