diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2025-11-04 22:54:04 +0100 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2025-11-05 17:05:19 -0800 |
| commit | c9e208fa93cd66f8077ee15df0728e62b105a687 (patch) | |
| tree | fce6edd39982663dcd0785fb3cea8c31ee9fd87c /tools/testing/selftests/bpf/test_kmods/bpf_testmod.c | |
| parent | 20a0bc10272fa17a44fc857c31574a8306f60d20 (diff) | |
selftests/bpf: Add stacktrace ips test for kprobe_multi/kretprobe_multi
Adding test that attaches kprobe/kretprobe multi and verifies the
ORC stacktrace matches expected functions.
Adding bpf_testmod_stacktrace_test function to bpf_testmod kernel
module which is called through several functions so we get reliable
call path for stacktrace.
The test is only for ORC unwinder to keep it simple.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20251104215405.168643-4-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Diffstat (limited to 'tools/testing/selftests/bpf/test_kmods/bpf_testmod.c')
| -rw-r--r-- | tools/testing/selftests/bpf/test_kmods/bpf_testmod.c | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/test_kmods/bpf_testmod.c b/tools/testing/selftests/bpf/test_kmods/bpf_testmod.c index 8074bc5f6f20..ed0a4721d8fd 100644 --- a/tools/testing/selftests/bpf/test_kmods/bpf_testmod.c +++ b/tools/testing/selftests/bpf/test_kmods/bpf_testmod.c @@ -417,6 +417,30 @@ noinline int bpf_testmod_fentry_test11(u64 a, void *b, short c, int d, return a + (long)b + c + d + (long)e + f + g + h + i + j + k; } +noinline void bpf_testmod_stacktrace_test(void) +{ + /* used for stacktrace test as attach function */ + asm volatile (""); +} + +noinline void bpf_testmod_stacktrace_test_3(void) +{ + bpf_testmod_stacktrace_test(); + asm volatile (""); +} + +noinline void bpf_testmod_stacktrace_test_2(void) +{ + bpf_testmod_stacktrace_test_3(); + asm volatile (""); +} + +noinline void bpf_testmod_stacktrace_test_1(void) +{ + bpf_testmod_stacktrace_test_2(); + asm volatile (""); +} + int bpf_testmod_fentry_ok; noinline ssize_t @@ -497,6 +521,8 @@ bpf_testmod_test_read(struct file *file, struct kobject *kobj, 21, 22, 23, 24, 25, 26) != 231) goto out; + bpf_testmod_stacktrace_test_1(); + bpf_testmod_fentry_ok = 1; out: return -EIO; /* always fail */ |