kernel.git/tools/testing/selftests/bpf/progs/fentry_recursive_target.c, branch masterHosts the 0x221E linux distro kernel.
https://git.0xinfinity.dev/distro/kernel.git/atom?h=master2024-01-05T04:40:49Zselftests/bpf: Test re-attachment fix for bpf_tracing_prog_attach2024-01-05T04:40:49ZDmitrii Dolgov2024-01-03T19:05:47Zurn:sha1:e02feb3f1f47509ec1e07b604bfbeff8c3b4e639
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>
selftests/bpf: Add test for recursive attachment of tracing progs2024-01-05T04:40:14ZDmitrii Dolgov2024-01-03T19:05:45Zurn:sha1:5c5371e069e1ffc204dda8b20c609b170b823165
Verify the fact that only one fentry prog could be attached to another
fentry, building up an attachment chain of limited size. Use existing
bpf_testmod as a start of the chain.
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/20240103190559.14750-3-9erthalion6@gmail.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>