kernel/tools/testing/selftests/bpf/prog_tests/map_kptr.c, branch linux-6.2.y

selftests/bpf: convert dynptr_fail and map_kptr_fail subtests to generic tester

2022-12-08T01:01:22Z

Convert big chunks of dynptr and map_kptr subtests to use generic verification_tester. They are switched from using manually maintained tables of test cases, specifying program name and expected error verifier message, to btf_decl_tag-based annotations directly on corresponding BPF programs: __failure to specify that BPF program is expected to fail verification, and __msg() to specify expected log message. Acked-by: John Fastabend Signed-off-by: Andrii Nakryiko Acked-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20221207201648.2990661-2-andrii@kernel.org Signed-off-by: Alexei Starovoitov

selftests/bpf: Fix memory leak caused by not destroying skeleton

2022-10-13T17:53:22Z

Some test cases does not destroy skeleton object correctly, causing ASAN to report memory leak warning. Fix it. Fixes: 0ef6740e9777 ("selftests/bpf: Add tests for kptr_ref refcounting") Fixes: 1642a3945e22 ("selftests/bpf: Add struct argument tests with fentry/fexit programs.") Signed-off-by: Xu Kuohai Signed-off-by: Andrii Nakryiko Acked-by: Martin KaFai Lau Link: https://lore.kernel.org/bpf/20221011120108.782373-4-xukuohai@huaweicloud.com

selftests/bpf: Convert some selftests to high-level BPF map APIs

2022-05-13T13:15:21Z

Convert a bunch of selftests to using newly added high-level BPF map APIs. This change exposed that map_kptr selftests allocated too big buffer, which is fixed in this patch as well. Signed-off-by: Andrii Nakryiko Signed-off-by: Daniel Borkmann Link: https://lore.kernel.org/bpf/20220512220713.2617964-2-andrii@kernel.org

selftests/bpf: Add tests for kptr_ref refcounting

2022-05-11T23:57:27Z

Check at runtime how various operations for kptr_ref affect its refcount and verify against the actual count. Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20220511194654.765705-5-memxor@gmail.com Signed-off-by: Alexei Starovoitov

selftests/bpf: Add negative C tests for kptrs

2022-05-11T23:57:27Z

This uses the newly added SEC("?foo") naming to disable autoload of programs, and then loads them one by one for the object and verifies that loading fails and matches the returned error string from verifier. This is similar to already existing verifier tests but provides coverage for BPF C. Signed-off-by: Kumar Kartikeya Dwivedi Link: https://lore.kernel.org/r/20220511194654.765705-4-memxor@gmail.com Signed-off-by: Alexei Starovoitov

selftests/bpf: Add C tests for kptr

2022-04-26T03:26:44Z

This uses the __kptr and __kptr_ref macros as well, and tries to test the stuff that is supposed to work, since we have negative tests in test_verifier suite. Also include some code to test map-in-map support, such that the inner_map_meta matches the kptr_off_tab of map added as element. Signed-off-by: Kumar Kartikeya Dwivedi Signed-off-by: Alexei Starovoitov Link: https://lore.kernel.org/bpf/20220424214901.2743946-12-memxor@gmail.com