1// SPDX-License-Identifier: GPL-2.0
 2/* Converted from tools/testing/selftests/bpf/verifier/btf_ctx_access.c */
 3
 4#include <linux/bpf.h>
 5#include <bpf/bpf_helpers.h>
 6#include "bpf_misc.h"
 7
 8SEC("fentry/bpf_modify_return_test")
 9__description("btf_ctx_access accept")
10__success __retval(0)
11__naked void btf_ctx_access_accept(void)
12{
13	asm volatile ("					\
14	r2 = *(u64 *)(r1 + 8);		/* load 2nd argument value (int pointer) */\
15	r0 = 0;						\
16	exit;						\
17"	::: __clobber_all);
18}
19
20SEC("fentry/bpf_fentry_test9")
21__description("btf_ctx_access u32 pointer accept")
22__success __retval(0)
23__naked void ctx_access_u32_pointer_accept(void)
24{
25	asm volatile ("					\
26	r2 = *(u64 *)(r1 + 0);		/* load 1nd argument value (u32 pointer) */\
27	r0 = 0;						\
28	exit;						\
29"	::: __clobber_all);
30}
31
32SEC("fentry/bpf_fentry_test9")
33__description("btf_ctx_access u32 pointer reject u32")
34__failure __msg("size 4 must be 8")
35__naked void ctx_access_u32_pointer_reject_32(void)
36{
37	asm volatile ("					\
38	r2 = *(u32 *)(r1 + 0);		/* load 1st argument with narrow load */\
39	r0 = 0;						\
40	exit;						\
41"	::: __clobber_all);
42}
43
44SEC("fentry/bpf_fentry_test9")
45__description("btf_ctx_access u32 pointer reject u16")
46__failure __msg("size 2 must be 8")
47__naked void ctx_access_u32_pointer_reject_16(void)
48{
49	asm volatile ("					\
50	r2 = *(u16 *)(r1 + 0);		/* load 1st argument with narrow load */\
51	r0 = 0;						\
52	exit;						\
53"	::: __clobber_all);
54}
55
56SEC("fentry/bpf_fentry_test9")
57__description("btf_ctx_access u32 pointer reject u8")
58__failure __msg("size 1 must be 8")
59__naked void ctx_access_u32_pointer_reject_8(void)
60{
61	asm volatile ("					\
62	r2 = *(u8 *)(r1 + 0);		/* load 1st argument with narrow load */\
63	r0 = 0;						\
64	exit;						\
65"	::: __clobber_all);
66}
67
68char _license[] SEC("license") = "GPL";

 1// SPDX-License-Identifier: GPL-2.0
 2/* Converted from tools/testing/selftests/bpf/verifier/btf_ctx_access.c */
 3
 4#include <linux/bpf.h>
 5#include <bpf/bpf_helpers.h>
 6#include "bpf_misc.h"
 7
 8SEC("fentry/bpf_modify_return_test")
 9__description("btf_ctx_access accept")
10__success __retval(0)
11__naked void btf_ctx_access_accept(void)
12{
13	asm volatile ("					\
14	r2 = *(u32*)(r1 + 8);		/* load 2nd argument value (int pointer) */\
15	r0 = 0;						\
16	exit;						\
17"	::: __clobber_all);
18}
19
20SEC("fentry/bpf_fentry_test9")
21__description("btf_ctx_access u32 pointer accept")
22__success __retval(0)
23__naked void ctx_access_u32_pointer_accept(void)
24{
25	asm volatile ("					\
26	r2 = *(u32*)(r1 + 0);		/* load 1nd argument value (u32 pointer) */\
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
27	r0 = 0;						\
28	exit;						\
29"	::: __clobber_all);
30}
31
32char _license[] SEC("license") = "GPL";