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| author | Viktor Malik <[email protected]> | 2023-03-10 07:41:00 +0000 |
|---|---|---|
| committer | Alexei Starovoitov <[email protected]> | 2023-03-16 01:38:30 +0000 |
| commit | aa3d65de4b9004d799f97700751a86d3ebd7d5f9 (patch) | |
| tree | ec9df74470d9a94d7cd6baaa2bd6a47453081879 /tools/testing/selftests/bpf/prog_tests/tcp_hdr_options.c | |
| parent | bpf: Fix attaching fentry/fexit/fmod_ret/lsm to modules (diff) | |
| download | kernel-aa3d65de4b9004d799f97700751a86d3ebd7d5f9.tar.gz kernel-aa3d65de4b9004d799f97700751a86d3ebd7d5f9.zip | |
bpf/selftests: Test fentry attachment to shadowed functions
Adds a new test that tries to attach a program to fentry of two
functions of the same name, one located in vmlinux and the other in
bpf_testmod.
To avoid conflicts with existing tests, a new function
"bpf_fentry_shadow_test" was created both in vmlinux and in bpf_testmod.
The previous commit fixed a bug which caused this test to fail. The
verifier would always use the vmlinux function's address as the target
trampoline address, hence trying to create two trampolines for a single
address, which is forbidden.
The test (similarly to other fentry/fexit tests) is not working on arm64
at the moment.
Signed-off-by: Viktor Malik <[email protected]>
Acked-by: Jiri Olsa <[email protected]>
Link: https://lore.kernel.org/r/5fe2f364190b6f79b085066ed7c5989c5bc475fa.1678432753.git.vmalik@redhat.com
Signed-off-by: Alexei Starovoitov <[email protected]>
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/tcp_hdr_options.c')
0 files changed, 0 insertions, 0 deletions