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a8a71796 |
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18-Sep-2020 |
Jiri Olsa <jolsa@kernel.org> |
selftests/bpf: Fix stat probe in d_path test Some kernels builds might inline vfs_getattr call within fstat syscall code path, so fentry/vfs_getattr trampoline is not called. Add security_inode_getattr to allowlist and switch the d_path test stat trampoline to security_inode_getattr. Keeping dentry_open and filp_close, because they are in their own files, so unlikely to be inlined, but in case they are, adding security_file_open. Adding flags that indicate trampolines were called and failing the test if any of them got missed, so it's easier to identify the issue next time. Fixes: e4d1af4b16f8 ("selftests/bpf: Add test for d_path helper") Suggested-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: Jiri Olsa <jolsa@redhat.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200918112338.2618444-1-jolsa@kernel.org
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e4d1af4b |
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25-Aug-2020 |
Jiri Olsa <jolsa@kernel.org> |
selftests/bpf: Add test for d_path helper Adding test for d_path helper which is pretty much copied from Wenbo Zhang's test for bpf_get_fd_path, which never made it in. The test is doing fstat/close on several fd types, and verifies we got the d_path helper working on kernel probes for vfs_getattr/filp_close functions. Original-patch-by: Wenbo Zhang <ethercflow@gmail.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Andrii Nakryiko <andriin@fb.com> Link: https://lore.kernel.org/bpf/20200825192124.710397-14-jolsa@kernel.org
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