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971f7c32 |
| 14-Sep-2023 |
Artem Savkov <asavkov@redhat.com> |
selftests/bpf: Skip module_fentry_shadow test when bpf_testmod is not available
This test relies on bpf_testmod, so skip it if the module is not available.
Fixes: aa3d65de4b900 ("bpf/selftests: Tes
selftests/bpf: Skip module_fentry_shadow test when bpf_testmod is not available
This test relies on bpf_testmod, so skip it if the module is not available.
Fixes: aa3d65de4b900 ("bpf/selftests: Test fentry attachment to shadowed functions") Signed-off-by: Artem Savkov <asavkov@redhat.com> Signed-off-by: Andrii Nakryiko <andrii@kernel.org> Link: https://lore.kernel.org/bpf/20230914124928.340701-1-asavkov@redhat.com
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aa3d65de |
| 10-Mar-2023 |
Viktor Malik <vmalik@redhat.com> |
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_te
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 <vmalik@redhat.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: https://lore.kernel.org/r/5fe2f364190b6f79b085066ed7c5989c5bc475fa.1678432753.git.vmalik@redhat.com Signed-off-by: Alexei Starovoitov <ast@kernel.org>
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