selftests/bpf: verifier/helper_packet_access.c converted to inline assembly

Test verifier/helper_packet_access.c automatically converted to use inline assembly.

Signed-off-by: Eduard Zingerman <eddyz87@gmail.com>
Link: https://lore.kernel.org/r/20230325025524.144043-22-eddyz87@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

diff --git a/tools/testing/selftests/bpf/prog_tests/verifier.c b/tools/testing/selftests/bpf/prog_tests/verifier.c
index 22d7e15..1cd162d 100644 (file)
--- a/tools/testing/selftests/bpf/prog_tests/verifier.c
+++ b/tools/testing/selftests/bpf/prog_tests/verifier.c
@@ -18,6 +18,7 @@
 #include "verifier_div0.skel.h"
 #include "verifier_div_overflow.skel.h"
 #include "verifier_helper_access_var_len.skel.h"
+#include "verifier_helper_packet_access.skel.h"
 
 __maybe_unused
 static void run_tests_aux(const char *skel_name, skel_elf_bytes_fn elf_bytes_factory)
@@ -58,3 +59,4 @@ void test_verifier_direct_stack_access_wraparound(void) { RUN(verifier_direct_st
 void test_verifier_div0(void)                 { RUN(verifier_div0); }
 void test_verifier_div_overflow(void)         { RUN(verifier_div_overflow); }
 void test_verifier_helper_access_var_len(void) { RUN(verifier_helper_access_var_len); }
+void test_verifier_helper_packet_access(void) { RUN(verifier_helper_packet_access); }

diff --git a/tools/testing/selftests/bpf/progs/verifier_helper_packet_access.c b/tools/testing/selftests/bpf/progs/verifier_helper_packet_access.c
new file mode 100644 (file)
index 0000000..74f5f9c
--- /dev/null
+++ b/tools/testing/selftests/bpf/progs/verifier_helper_packet_access.c
@@ -0,0 +1,550 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Converted from tools/testing/selftests/bpf/verifier/helper_packet_access.c */
+
+#include <linux/bpf.h>
+#include <bpf/bpf_helpers.h>
+#include "bpf_misc.h"
+
+struct {
+       __uint(type, BPF_MAP_TYPE_HASH);
+       __uint(max_entries, 1);
+       __type(key, long long);
+       __type(value, long long);
+} map_hash_8b SEC(".maps");
+
+SEC("xdp")
+__description("helper access to packet: test1, valid packet_ptr range")
+__success __retval(0)
+__naked void test1_valid_packet_ptr_range(void)
+{
+       asm volatile ("                                 \
+       r2 = *(u32*)(r1 + %[xdp_md_data]);              \
+       r3 = *(u32*)(r1 + %[xdp_md_data_end]);          \
+       r1 = r2;                                        \
+       r1 += 8;                                        \
+       if r1 > r3 goto l0_%=;                          \
+       r1 = %[map_hash_8b] ll;                         \
+       r3 = r2;                                        \
+       r4 = 0;                                         \
+       call %[bpf_map_update_elem];                    \
+l0_%=: r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_map_update_elem),
+         __imm_addr(map_hash_8b),
+         __imm_const(xdp_md_data, offsetof(struct xdp_md, data)),
+         __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end))
+       : __clobber_all);
+}
+
+SEC("xdp")
+__description("helper access to packet: test2, unchecked packet_ptr")
+__failure __msg("invalid access to packet")
+__naked void packet_test2_unchecked_packet_ptr(void)
+{
+       asm volatile ("                                 \
+       r2 = *(u32*)(r1 + %[xdp_md_data]);              \
+       r1 = %[map_hash_8b] ll;                         \
+       call %[bpf_map_lookup_elem];                    \
+       r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_map_lookup_elem),
+         __imm_addr(map_hash_8b),
+         __imm_const(xdp_md_data, offsetof(struct xdp_md, data))
+       : __clobber_all);
+}
+
+SEC("xdp")
+__description("helper access to packet: test3, variable add")
+__success __retval(0)
+__naked void to_packet_test3_variable_add(void)
+{
+       asm volatile ("                                 \
+       r2 = *(u32*)(r1 + %[xdp_md_data]);              \
+       r3 = *(u32*)(r1 + %[xdp_md_data_end]);          \
+       r4 = r2;                                        \
+       r4 += 8;                                        \
+       if r4 > r3 goto l0_%=;                          \
+       r5 = *(u8*)(r2 + 0);                            \
+       r4 = r2;                                        \
+       r4 += r5;                                       \
+       r5 = r4;                                        \
+       r5 += 8;                                        \
+       if r5 > r3 goto l0_%=;                          \
+       r1 = %[map_hash_8b] ll;                         \
+       r2 = r4;                                        \
+       call %[bpf_map_lookup_elem];                    \
+l0_%=: r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_map_lookup_elem),
+         __imm_addr(map_hash_8b),
+         __imm_const(xdp_md_data, offsetof(struct xdp_md, data)),
+         __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end))
+       : __clobber_all);
+}
+
+SEC("xdp")
+__description("helper access to packet: test4, packet_ptr with bad range")
+__failure __msg("invalid access to packet")
+__naked void packet_ptr_with_bad_range_1(void)
+{
+       asm volatile ("                                 \
+       r2 = *(u32*)(r1 + %[xdp_md_data]);              \
+       r3 = *(u32*)(r1 + %[xdp_md_data_end]);          \
+       r4 = r2;                                        \
+       r4 += 4;                                        \
+       if r4 > r3 goto l0_%=;                          \
+       r0 = 0;                                         \
+       exit;                                           \
+l0_%=: r1 = %[map_hash_8b] ll;                         \
+       call %[bpf_map_lookup_elem];                    \
+       r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_map_lookup_elem),
+         __imm_addr(map_hash_8b),
+         __imm_const(xdp_md_data, offsetof(struct xdp_md, data)),
+         __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end))
+       : __clobber_all);
+}
+
+SEC("xdp")
+__description("helper access to packet: test5, packet_ptr with too short range")
+__failure __msg("invalid access to packet")
+__naked void ptr_with_too_short_range_1(void)
+{
+       asm volatile ("                                 \
+       r2 = *(u32*)(r1 + %[xdp_md_data]);              \
+       r3 = *(u32*)(r1 + %[xdp_md_data_end]);          \
+       r2 += 1;                                        \
+       r4 = r2;                                        \
+       r4 += 7;                                        \
+       if r4 > r3 goto l0_%=;                          \
+       r1 = %[map_hash_8b] ll;                         \
+       call %[bpf_map_lookup_elem];                    \
+l0_%=: r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_map_lookup_elem),
+         __imm_addr(map_hash_8b),
+         __imm_const(xdp_md_data, offsetof(struct xdp_md, data)),
+         __imm_const(xdp_md_data_end, offsetof(struct xdp_md, data_end))
+       : __clobber_all);
+}
+
+SEC("tc")
+__description("helper access to packet: test6, cls valid packet_ptr range")
+__success __retval(0)
+__naked void cls_valid_packet_ptr_range(void)
+{
+       asm volatile ("                                 \
+       r2 = *(u32*)(r1 + %[__sk_buff_data]);           \
+       r3 = *(u32*)(r1 + %[__sk_buff_data_end]);       \
+       r1 = r2;                                        \
+       r1 += 8;                                        \
+       if r1 > r3 goto l0_%=;                          \
+       r1 = %[map_hash_8b] ll;                         \
+       r3 = r2;                                        \
+       r4 = 0;                                         \
+       call %[bpf_map_update_elem];                    \
+l0_%=: r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_map_update_elem),
+         __imm_addr(map_hash_8b),
+         __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("helper access to packet: test7, cls unchecked packet_ptr")
+__failure __msg("invalid access to packet")
+__naked void test7_cls_unchecked_packet_ptr(void)
+{
+       asm volatile ("                                 \
+       r2 = *(u32*)(r1 + %[__sk_buff_data]);           \
+       r1 = %[map_hash_8b] ll;                         \
+       call %[bpf_map_lookup_elem];                    \
+       r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_map_lookup_elem),
+         __imm_addr(map_hash_8b),
+         __imm_const(__sk_buff_data, offsetof(struct __sk_buff, data))
+       : __clobber_all);
+}
+
+SEC("tc")
+__description("helper access to packet: test8, cls variable add")
+__success __retval(0)
+__naked void packet_test8_cls_variable_add(void)
+{
+       asm volatile ("                                 \
+       r2 = *(u32*)(r1 + %[__sk_buff_data]);           \
+       r3 = *(u32*)(r1 + %[__sk_buff_data_end]);       \
+       r4 = r2;                                        \
+       r4 += 8;                                        \
+       if r4 > r3 goto l0_%=;                          \
+       r5 = *(u8*)(r2 + 0);                            \
+       r4 = r2;                                        \
+       r4 += r5;                                       \
+       r5 = r4;                                        \
+       r5 += 8;                                        \
+       if r5 > r3 goto l0_%=;                          \
+       r1 = %[map_hash_8b] ll;                         \
+       r2 = r4;                                        \
+       call %[bpf_map_lookup_elem];                    \
+l0_%=: r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_map_lookup_elem),
+         __imm_addr(map_hash_8b),
+         __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("helper access to packet: test9, cls packet_ptr with bad range")
+__failure __msg("invalid access to packet")
+__naked void packet_ptr_with_bad_range_2(void)
+{
+       asm volatile ("                                 \
+       r2 = *(u32*)(r1 + %[__sk_buff_data]);           \
+       r3 = *(u32*)(r1 + %[__sk_buff_data_end]);       \
+       r4 = r2;                                        \
+       r4 += 4;                                        \
+       if r4 > r3 goto l0_%=;                          \
+       r0 = 0;                                         \
+       exit;                                           \
+l0_%=: r1 = %[map_hash_8b] ll;                         \
+       call %[bpf_map_lookup_elem];                    \
+       r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_map_lookup_elem),
+         __imm_addr(map_hash_8b),
+         __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("helper access to packet: test10, cls packet_ptr with too short range")
+__failure __msg("invalid access to packet")
+__naked void ptr_with_too_short_range_2(void)
+{
+       asm volatile ("                                 \
+       r2 = *(u32*)(r1 + %[__sk_buff_data]);           \
+       r3 = *(u32*)(r1 + %[__sk_buff_data_end]);       \
+       r2 += 1;                                        \
+       r4 = r2;                                        \
+       r4 += 7;                                        \
+       if r4 > r3 goto l0_%=;                          \
+       r1 = %[map_hash_8b] ll;                         \
+       call %[bpf_map_lookup_elem];                    \
+l0_%=: r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_map_lookup_elem),
+         __imm_addr(map_hash_8b),
+         __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("helper access to packet: test11, cls unsuitable helper 1")
+__failure __msg("helper access to the packet")
+__naked void test11_cls_unsuitable_helper_1(void)
+{
+       asm volatile ("                                 \
+       r6 = *(u32*)(r1 + %[__sk_buff_data]);           \
+       r7 = *(u32*)(r1 + %[__sk_buff_data_end]);       \
+       r6 += 1;                                        \
+       r3 = r6;                                        \
+       r3 += 7;                                        \
+       if r3 > r7 goto l0_%=;                          \
+       r2 = 0;                                         \
+       r4 = 42;                                        \
+       r5 = 0;                                         \
+       call %[bpf_skb_store_bytes];                    \
+l0_%=: r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_skb_store_bytes),
+         __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("helper access to packet: test12, cls unsuitable helper 2")
+__failure __msg("helper access to the packet")
+__naked void test12_cls_unsuitable_helper_2(void)
+{
+       asm volatile ("                                 \
+       r6 = *(u32*)(r1 + %[__sk_buff_data]);           \
+       r7 = *(u32*)(r1 + %[__sk_buff_data_end]);       \
+       r3 = r6;                                        \
+       r6 += 8;                                        \
+       if r6 > r7 goto l0_%=;                          \
+       r2 = 0;                                         \
+       r4 = 4;                                         \
+       call %[bpf_skb_load_bytes];                     \
+l0_%=: r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_skb_load_bytes),
+         __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("helper access to packet: test13, cls helper ok")
+__success __retval(0)
+__naked void packet_test13_cls_helper_ok(void)
+{
+       asm volatile ("                                 \
+       r6 = *(u32*)(r1 + %[__sk_buff_data]);           \
+       r7 = *(u32*)(r1 + %[__sk_buff_data_end]);       \
+       r6 += 1;                                        \
+       r1 = r6;                                        \
+       r1 += 7;                                        \
+       if r1 > r7 goto l0_%=;                          \
+       r1 = r6;                                        \
+       r2 = 4;                                         \
+       r3 = 0;                                         \
+       r4 = 0;                                         \
+       r5 = 0;                                         \
+       call %[bpf_csum_diff];                          \
+l0_%=: r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_csum_diff),
+         __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("helper access to packet: test14, cls helper ok sub")
+__success __retval(0)
+__naked void test14_cls_helper_ok_sub(void)
+{
+       asm volatile ("                                 \
+       r6 = *(u32*)(r1 + %[__sk_buff_data]);           \
+       r7 = *(u32*)(r1 + %[__sk_buff_data_end]);       \
+       r6 += 1;                                        \
+       r1 = r6;                                        \
+       r1 += 7;                                        \
+       if r1 > r7 goto l0_%=;                          \
+       r1 -= 4;                                        \
+       r2 = 4;                                         \
+       r3 = 0;                                         \
+       r4 = 0;                                         \
+       r5 = 0;                                         \
+       call %[bpf_csum_diff];                          \
+l0_%=: r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_csum_diff),
+         __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("helper access to packet: test15, cls helper fail sub")
+__failure __msg("invalid access to packet")
+__naked void test15_cls_helper_fail_sub(void)
+{
+       asm volatile ("                                 \
+       r6 = *(u32*)(r1 + %[__sk_buff_data]);           \
+       r7 = *(u32*)(r1 + %[__sk_buff_data_end]);       \
+       r6 += 1;                                        \
+       r1 = r6;                                        \
+       r1 += 7;                                        \
+       if r1 > r7 goto l0_%=;                          \
+       r1 -= 12;                                       \
+       r2 = 4;                                         \
+       r3 = 0;                                         \
+       r4 = 0;                                         \
+       r5 = 0;                                         \
+       call %[bpf_csum_diff];                          \
+l0_%=: r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_csum_diff),
+         __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("helper access to packet: test16, cls helper fail range 1")
+__failure __msg("invalid access to packet")
+__naked void cls_helper_fail_range_1(void)
+{
+       asm volatile ("                                 \
+       r6 = *(u32*)(r1 + %[__sk_buff_data]);           \
+       r7 = *(u32*)(r1 + %[__sk_buff_data_end]);       \
+       r6 += 1;                                        \
+       r1 = r6;                                        \
+       r1 += 7;                                        \
+       if r1 > r7 goto l0_%=;                          \
+       r1 = r6;                                        \
+       r2 = 8;                                         \
+       r3 = 0;                                         \
+       r4 = 0;                                         \
+       r5 = 0;                                         \
+       call %[bpf_csum_diff];                          \
+l0_%=: r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_csum_diff),
+         __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("helper access to packet: test17, cls helper fail range 2")
+__failure __msg("R2 min value is negative")
+__naked void cls_helper_fail_range_2(void)
+{
+       asm volatile ("                                 \
+       r6 = *(u32*)(r1 + %[__sk_buff_data]);           \
+       r7 = *(u32*)(r1 + %[__sk_buff_data_end]);       \
+       r6 += 1;                                        \
+       r1 = r6;                                        \
+       r1 += 7;                                        \
+       if r1 > r7 goto l0_%=;                          \
+       r1 = r6;                                        \
+       r2 = -9;                                        \
+       r3 = 0;                                         \
+       r4 = 0;                                         \
+       r5 = 0;                                         \
+       call %[bpf_csum_diff];                          \
+l0_%=: r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_csum_diff),
+         __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("helper access to packet: test18, cls helper fail range 3")
+__failure __msg("R2 min value is negative")
+__naked void cls_helper_fail_range_3(void)
+{
+       asm volatile ("                                 \
+       r6 = *(u32*)(r1 + %[__sk_buff_data]);           \
+       r7 = *(u32*)(r1 + %[__sk_buff_data_end]);       \
+       r6 += 1;                                        \
+       r1 = r6;                                        \
+       r1 += 7;                                        \
+       if r1 > r7 goto l0_%=;                          \
+       r1 = r6;                                        \
+       r2 = %[__imm_0];                                \
+       r3 = 0;                                         \
+       r4 = 0;                                         \
+       r5 = 0;                                         \
+       call %[bpf_csum_diff];                          \
+l0_%=: r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_csum_diff),
+         __imm_const(__imm_0, ~0),
+         __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("helper access to packet: test19, cls helper range zero")
+__success __retval(0)
+__naked void test19_cls_helper_range_zero(void)
+{
+       asm volatile ("                                 \
+       r6 = *(u32*)(r1 + %[__sk_buff_data]);           \
+       r7 = *(u32*)(r1 + %[__sk_buff_data_end]);       \
+       r6 += 1;                                        \
+       r1 = r6;                                        \
+       r1 += 7;                                        \
+       if r1 > r7 goto l0_%=;                          \
+       r1 = r6;                                        \
+       r2 = 0;                                         \
+       r3 = 0;                                         \
+       r4 = 0;                                         \
+       r5 = 0;                                         \
+       call %[bpf_csum_diff];                          \
+l0_%=: r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_csum_diff),
+         __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("helper access to packet: test20, pkt end as input")
+__failure __msg("R1 type=pkt_end expected=fp")
+__naked void test20_pkt_end_as_input(void)
+{
+       asm volatile ("                                 \
+       r6 = *(u32*)(r1 + %[__sk_buff_data]);           \
+       r7 = *(u32*)(r1 + %[__sk_buff_data_end]);       \
+       r6 += 1;                                        \
+       r1 = r6;                                        \
+       r1 += 7;                                        \
+       if r1 > r7 goto l0_%=;                          \
+       r1 = r7;                                        \
+       r2 = 4;                                         \
+       r3 = 0;                                         \
+       r4 = 0;                                         \
+       r5 = 0;                                         \
+       call %[bpf_csum_diff];                          \
+l0_%=: r0 = 0;                                         \
+       exit;                                           \
+"      :
+       : __imm(bpf_csum_diff),
+         __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("helper access to packet: test21, wrong reg")
+__failure __msg("invalid access to packet")
+__naked void to_packet_test21_wrong_reg(void)
+{
+       asm volatile ("                                 \
+       r6 = *(u32*)(r1 + %[__sk_buff_data]);           \
+       r7 = *(u32*)(r1 + %[__sk_buff_data_end]);       \
+       r6 += 1;                                        \
+       r1 = r6;                                        \
+       r1 += 7;                                        \
+       if r1 > r7 goto l0_%=;                          \
+       r2 = 4;                                         \
+       r3 = 0;                                         \
+       r4 = 0;                                         \
+       r5 = 0;                                         \
+       call %[bpf_csum_diff];                          \
+       r0 = 0;                                         \
+l0_%=: exit;                                           \
+"      :
+       : __imm(bpf_csum_diff),
+         __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";

diff --git a/tools/testing/selftests/bpf/verifier/helper_packet_access.c b/tools/testing/selftests/bpf/verifier/helper_packet_access.c
deleted file mode 100644 (file)
index ae54587..0000000
--- a/tools/testing/selftests/bpf/verifier/helper_packet_access.c
+++ /dev/null
@@ -1,460 +0,0 @@
-{
-       "helper access to packet: test1, valid packet_ptr range",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, offsetof(struct xdp_md, data)),
-       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
-                   offsetof(struct xdp_md, data_end)),
-       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_3, 5),
-       BPF_LD_MAP_FD(BPF_REG_1, 0),
-       BPF_MOV64_REG(BPF_REG_3, BPF_REG_2),
-       BPF_MOV64_IMM(BPF_REG_4, 0),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_update_elem),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .fixup_map_hash_8b = { 5 },
-       .result_unpriv = ACCEPT,
-       .result = ACCEPT,
-       .prog_type = BPF_PROG_TYPE_XDP,
-},
-{
-       "helper access to packet: test2, unchecked packet_ptr",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, offsetof(struct xdp_md, data)),
-       BPF_LD_MAP_FD(BPF_REG_1, 0),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .fixup_map_hash_8b = { 1 },
-       .result = REJECT,
-       .errstr = "invalid access to packet",
-       .prog_type = BPF_PROG_TYPE_XDP,
-},
-{
-       "helper access to packet: test3, variable add",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, offsetof(struct xdp_md, data)),
-       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
-                       offsetof(struct xdp_md, data_end)),
-       BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 8),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 10),
-       BPF_LDX_MEM(BPF_B, BPF_REG_5, BPF_REG_2, 0),
-       BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
-       BPF_ALU64_REG(BPF_ADD, BPF_REG_4, BPF_REG_5),
-       BPF_MOV64_REG(BPF_REG_5, BPF_REG_4),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_5, 8),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_5, BPF_REG_3, 4),
-       BPF_LD_MAP_FD(BPF_REG_1, 0),
-       BPF_MOV64_REG(BPF_REG_2, BPF_REG_4),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .fixup_map_hash_8b = { 11 },
-       .result = ACCEPT,
-       .prog_type = BPF_PROG_TYPE_XDP,
-},
-{
-       "helper access to packet: test4, packet_ptr with bad range",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, offsetof(struct xdp_md, data)),
-       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
-                   offsetof(struct xdp_md, data_end)),
-       BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 4),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 2),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       BPF_LD_MAP_FD(BPF_REG_1, 0),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .fixup_map_hash_8b = { 7 },
-       .result = REJECT,
-       .errstr = "invalid access to packet",
-       .prog_type = BPF_PROG_TYPE_XDP,
-},
-{
-       "helper access to packet: test5, packet_ptr with too short range",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1, offsetof(struct xdp_md, data)),
-       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
-                   offsetof(struct xdp_md, data_end)),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1),
-       BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 7),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 3),
-       BPF_LD_MAP_FD(BPF_REG_1, 0),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .fixup_map_hash_8b = { 6 },
-       .result = REJECT,
-       .errstr = "invalid access to packet",
-       .prog_type = BPF_PROG_TYPE_XDP,
-},
-{
-       "helper access to packet: test6, cls valid packet_ptr range",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
-                   offsetof(struct __sk_buff, data)),
-       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
-                   offsetof(struct __sk_buff, data_end)),
-       BPF_MOV64_REG(BPF_REG_1, BPF_REG_2),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 8),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_3, 5),
-       BPF_LD_MAP_FD(BPF_REG_1, 0),
-       BPF_MOV64_REG(BPF_REG_3, BPF_REG_2),
-       BPF_MOV64_IMM(BPF_REG_4, 0),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_update_elem),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .fixup_map_hash_8b = { 5 },
-       .result = ACCEPT,
-       .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
-       "helper access to packet: test7, cls unchecked packet_ptr",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
-                   offsetof(struct __sk_buff, data)),
-       BPF_LD_MAP_FD(BPF_REG_1, 0),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .fixup_map_hash_8b = { 1 },
-       .result = REJECT,
-       .errstr = "invalid access to packet",
-       .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
-       "helper access to packet: test8, cls variable add",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
-                       offsetof(struct __sk_buff, data)),
-       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
-                       offsetof(struct __sk_buff, data_end)),
-       BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 8),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 10),
-       BPF_LDX_MEM(BPF_B, BPF_REG_5, BPF_REG_2, 0),
-       BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
-       BPF_ALU64_REG(BPF_ADD, BPF_REG_4, BPF_REG_5),
-       BPF_MOV64_REG(BPF_REG_5, BPF_REG_4),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_5, 8),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_5, BPF_REG_3, 4),
-       BPF_LD_MAP_FD(BPF_REG_1, 0),
-       BPF_MOV64_REG(BPF_REG_2, BPF_REG_4),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .fixup_map_hash_8b = { 11 },
-       .result = ACCEPT,
-       .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
-       "helper access to packet: test9, cls packet_ptr with bad range",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
-                   offsetof(struct __sk_buff, data)),
-       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
-                   offsetof(struct __sk_buff, data_end)),
-       BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 4),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 2),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       BPF_LD_MAP_FD(BPF_REG_1, 0),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .fixup_map_hash_8b = { 7 },
-       .result = REJECT,
-       .errstr = "invalid access to packet",
-       .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
-       "helper access to packet: test10, cls packet_ptr with too short range",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_2, BPF_REG_1,
-                   offsetof(struct __sk_buff, data)),
-       BPF_LDX_MEM(BPF_W, BPF_REG_3, BPF_REG_1,
-                   offsetof(struct __sk_buff, data_end)),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_2, 1),
-       BPF_MOV64_REG(BPF_REG_4, BPF_REG_2),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_4, 7),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_4, BPF_REG_3, 3),
-       BPF_LD_MAP_FD(BPF_REG_1, 0),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_map_lookup_elem),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .fixup_map_hash_8b = { 6 },
-       .result = REJECT,
-       .errstr = "invalid access to packet",
-       .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
-       "helper access to packet: test11, cls unsuitable helper 1",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
-                   offsetof(struct __sk_buff, data)),
-       BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
-                   offsetof(struct __sk_buff, data_end)),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
-       BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_3, 7),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_3, BPF_REG_7, 4),
-       BPF_MOV64_IMM(BPF_REG_2, 0),
-       BPF_MOV64_IMM(BPF_REG_4, 42),
-       BPF_MOV64_IMM(BPF_REG_5, 0),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_store_bytes),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .result = REJECT,
-       .errstr = "helper access to the packet",
-       .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
-       "helper access to packet: test12, cls unsuitable helper 2",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
-                   offsetof(struct __sk_buff, data)),
-       BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
-                   offsetof(struct __sk_buff, data_end)),
-       BPF_MOV64_REG(BPF_REG_3, BPF_REG_6),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 8),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_6, BPF_REG_7, 3),
-       BPF_MOV64_IMM(BPF_REG_2, 0),
-       BPF_MOV64_IMM(BPF_REG_4, 4),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_skb_load_bytes),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .result = REJECT,
-       .errstr = "helper access to the packet",
-       .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
-       "helper access to packet: test13, cls helper ok",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
-                   offsetof(struct __sk_buff, data)),
-       BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
-                   offsetof(struct __sk_buff, data_end)),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
-       BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
-       BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
-       BPF_MOV64_IMM(BPF_REG_2, 4),
-       BPF_MOV64_IMM(BPF_REG_3, 0),
-       BPF_MOV64_IMM(BPF_REG_4, 0),
-       BPF_MOV64_IMM(BPF_REG_5, 0),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .result = ACCEPT,
-       .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
-       "helper access to packet: test14, cls helper ok sub",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
-                   offsetof(struct __sk_buff, data)),
-       BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
-                   offsetof(struct __sk_buff, data_end)),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
-       BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
-       BPF_ALU64_IMM(BPF_SUB, BPF_REG_1, 4),
-       BPF_MOV64_IMM(BPF_REG_2, 4),
-       BPF_MOV64_IMM(BPF_REG_3, 0),
-       BPF_MOV64_IMM(BPF_REG_4, 0),
-       BPF_MOV64_IMM(BPF_REG_5, 0),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .result = ACCEPT,
-       .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
-       "helper access to packet: test15, cls helper fail sub",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
-                   offsetof(struct __sk_buff, data)),
-       BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
-                   offsetof(struct __sk_buff, data_end)),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
-       BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
-       BPF_ALU64_IMM(BPF_SUB, BPF_REG_1, 12),
-       BPF_MOV64_IMM(BPF_REG_2, 4),
-       BPF_MOV64_IMM(BPF_REG_3, 0),
-       BPF_MOV64_IMM(BPF_REG_4, 0),
-       BPF_MOV64_IMM(BPF_REG_5, 0),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .result = REJECT,
-       .errstr = "invalid access to packet",
-       .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
-       "helper access to packet: test16, cls helper fail range 1",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
-                   offsetof(struct __sk_buff, data)),
-       BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
-                   offsetof(struct __sk_buff, data_end)),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
-       BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
-       BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
-       BPF_MOV64_IMM(BPF_REG_2, 8),
-       BPF_MOV64_IMM(BPF_REG_3, 0),
-       BPF_MOV64_IMM(BPF_REG_4, 0),
-       BPF_MOV64_IMM(BPF_REG_5, 0),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .result = REJECT,
-       .errstr = "invalid access to packet",
-       .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
-       "helper access to packet: test17, cls helper fail range 2",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
-                   offsetof(struct __sk_buff, data)),
-       BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
-                   offsetof(struct __sk_buff, data_end)),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
-       BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
-       BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
-       BPF_MOV64_IMM(BPF_REG_2, -9),
-       BPF_MOV64_IMM(BPF_REG_3, 0),
-       BPF_MOV64_IMM(BPF_REG_4, 0),
-       BPF_MOV64_IMM(BPF_REG_5, 0),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .result = REJECT,
-       .errstr = "R2 min value is negative",
-       .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
-       "helper access to packet: test18, cls helper fail range 3",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
-                   offsetof(struct __sk_buff, data)),
-       BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
-                   offsetof(struct __sk_buff, data_end)),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
-       BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
-       BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
-       BPF_MOV64_IMM(BPF_REG_2, ~0),
-       BPF_MOV64_IMM(BPF_REG_3, 0),
-       BPF_MOV64_IMM(BPF_REG_4, 0),
-       BPF_MOV64_IMM(BPF_REG_5, 0),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .result = REJECT,
-       .errstr = "R2 min value is negative",
-       .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
-       "helper access to packet: test19, cls helper range zero",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
-                   offsetof(struct __sk_buff, data)),
-       BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
-                   offsetof(struct __sk_buff, data_end)),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
-       BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
-       BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
-       BPF_MOV64_IMM(BPF_REG_2, 0),
-       BPF_MOV64_IMM(BPF_REG_3, 0),
-       BPF_MOV64_IMM(BPF_REG_4, 0),
-       BPF_MOV64_IMM(BPF_REG_5, 0),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .result = ACCEPT,
-       .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
-       "helper access to packet: test20, pkt end as input",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
-                   offsetof(struct __sk_buff, data)),
-       BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
-                   offsetof(struct __sk_buff, data_end)),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
-       BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
-       BPF_MOV64_REG(BPF_REG_1, BPF_REG_7),
-       BPF_MOV64_IMM(BPF_REG_2, 4),
-       BPF_MOV64_IMM(BPF_REG_3, 0),
-       BPF_MOV64_IMM(BPF_REG_4, 0),
-       BPF_MOV64_IMM(BPF_REG_5, 0),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .result = REJECT,
-       .errstr = "R1 type=pkt_end expected=fp",
-       .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},
-{
-       "helper access to packet: test21, wrong reg",
-       .insns = {
-       BPF_LDX_MEM(BPF_W, BPF_REG_6, BPF_REG_1,
-                   offsetof(struct __sk_buff, data)),
-       BPF_LDX_MEM(BPF_W, BPF_REG_7, BPF_REG_1,
-                   offsetof(struct __sk_buff, data_end)),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_6, 1),
-       BPF_MOV64_REG(BPF_REG_1, BPF_REG_6),
-       BPF_ALU64_IMM(BPF_ADD, BPF_REG_1, 7),
-       BPF_JMP_REG(BPF_JGT, BPF_REG_1, BPF_REG_7, 6),
-       BPF_MOV64_IMM(BPF_REG_2, 4),
-       BPF_MOV64_IMM(BPF_REG_3, 0),
-       BPF_MOV64_IMM(BPF_REG_4, 0),
-       BPF_MOV64_IMM(BPF_REG_5, 0),
-       BPF_RAW_INSN(BPF_JMP | BPF_CALL, 0, 0, 0, BPF_FUNC_csum_diff),
-       BPF_MOV64_IMM(BPF_REG_0, 0),
-       BPF_EXIT_INSN(),
-       },
-       .result = REJECT,
-       .errstr = "invalid access to packet",
-       .prog_type = BPF_PROG_TYPE_SCHED_CLS,
-},