diff options
| author | Yonghong Song <yonghong.song@linux.dev> | 2024-02-06 23:01:07 -0800 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2024-02-13 11:11:25 -0800 |
| commit | fc1c9e40da37905f87c73711a1ecc57f52c1fe1c (patch) | |
| tree | b952abe8f9f1f32783a44801d5e99973ee43b0a6 /tools/testing/selftests/bpf/prog_tests/tracing_failure.c | |
| parent | 178c54666f9c4d2f49f2ea661d0c11b52f0ed190 (diff) | |
| download | lwn-fc1c9e40da37905f87c73711a1ecc57f52c1fe1c.tar.gz lwn-fc1c9e40da37905f87c73711a1ecc57f52c1fe1c.zip | |
selftests/bpf: Ensure fentry prog cannot attach to bpf_spin_{lock,unlcok}()
Add two tests to ensure fentry programs cannot attach to
bpf_spin_{lock,unlock}() helpers. The tracing_failure.c files
can be used in the future for other tracing failure cases.
Signed-off-by: Yonghong Song <yonghong.song@linux.dev>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20240207070107.335341-1-yonghong.song@linux.dev
Diffstat (limited to 'tools/testing/selftests/bpf/prog_tests/tracing_failure.c')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/tracing_failure.c | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/tracing_failure.c b/tools/testing/selftests/bpf/prog_tests/tracing_failure.c new file mode 100644 index 000000000000..a222df765bc3 --- /dev/null +++ b/tools/testing/selftests/bpf/prog_tests/tracing_failure.c @@ -0,0 +1,37 @@ +// SPDX-License-Identifier: GPL-2.0 +/* Copyright (c) 2024 Meta Platforms, Inc. and affiliates. */ +#include <test_progs.h> +#include "tracing_failure.skel.h" + +static void test_bpf_spin_lock(bool is_spin_lock) +{ + struct tracing_failure *skel; + int err; + + skel = tracing_failure__open(); + if (!ASSERT_OK_PTR(skel, "tracing_failure__open")) + return; + + if (is_spin_lock) + bpf_program__set_autoload(skel->progs.test_spin_lock, true); + else + bpf_program__set_autoload(skel->progs.test_spin_unlock, true); + + err = tracing_failure__load(skel); + if (!ASSERT_OK(err, "tracing_failure__load")) + goto out; + + err = tracing_failure__attach(skel); + ASSERT_ERR(err, "tracing_failure__attach"); + +out: + tracing_failure__destroy(skel); +} + +void test_tracing_failure(void) +{ + if (test__start_subtest("bpf_spin_lock")) + test_bpf_spin_lock(true); + if (test__start_subtest("bpf_spin_unlock")) + test_bpf_spin_lock(false); +} |