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| author | Dmitrii Dolgov <9erthalion6@gmail.com> | 2024-01-03 22:05:47 +0300 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2024-01-05 07:40:49 +0300 |
| commit | e02feb3f1f47509ec1e07b604bfbeff8c3b4e639 (patch) | |
| tree | 0597b83407e92f101be92851c0b2e0eb5181b045 /tools/testing/selftests/bpf/progs | |
| parent | 715d82ba636cb3629a6e18a33bb9dbe53f9936ee (diff) | |
| download | linux-e02feb3f1f47509ec1e07b604bfbeff8c3b4e639.tar.xz | |
selftests/bpf: Test re-attachment fix for bpf_tracing_prog_attach
Add a test case to verify the fix for "prog->aux->dst_trampoline and
tgt_prog is NULL" branch in bpf_tracing_prog_attach. The sequence of
events:
1. load rawtp program
2. load fentry program with rawtp as target_fd
3. create tracing link for fentry program with target_fd = 0
4. repeat 3
Acked-by: Jiri Olsa <olsajiri@gmail.com>
Acked-by: Song Liu <song@kernel.org>
Signed-off-by: Dmitrii Dolgov <9erthalion6@gmail.com>
Link: https://lore.kernel.org/r/20240103190559.14750-5-9erthalion6@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'tools/testing/selftests/bpf/progs')
| -rw-r--r-- | tools/testing/selftests/bpf/progs/fentry_recursive_target.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/progs/fentry_recursive_target.c b/tools/testing/selftests/bpf/progs/fentry_recursive_target.c index cb18a8bfffac..267c876d0aba 100644 --- a/tools/testing/selftests/bpf/progs/fentry_recursive_target.c +++ b/tools/testing/selftests/bpf/progs/fentry_recursive_target.c @@ -14,3 +14,12 @@ int BPF_PROG(test1, int a) { return 0; } + +/* Dummy bpf prog for testing attach_btf presence when attaching an fentry + * program. + */ +SEC("raw_tp/sys_enter") +int BPF_PROG(fentry_target, struct pt_regs *regs, long id) +{ + return 0; +} |