diff options
| author | Jiri Olsa <jolsa@kernel.org> | 2026-01-26 22:18:35 +0100 |
|---|---|---|
| committer | Andrii Nakryiko <andrii@kernel.org> | 2026-01-30 13:40:08 -0800 |
| commit | 7373f97e868ad01fc73de8e7b71834eeba25d4f1 (patch) | |
| tree | bdbe9f356a4bb408ab049c45722571442ceaa3ad /tools | |
| parent | 0207f94971e72a13380e28022c86da147e8e090f (diff) | |
selftests/bpf: Add stacktrace ips test for kprobe/kretprobe
Adding test that attaches kprobe/kretprobe and verifies the
ORC stacktrace matches expected functions.
The test is only for ORC unwinder to keep it simple.
Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Signed-off-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/bpf/20260126211837.472802-5-jolsa@kernel.org
Diffstat (limited to 'tools')
| -rw-r--r-- | tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c | 50 | ||||
| -rw-r--r-- | tools/testing/selftests/bpf/progs/stacktrace_ips.c | 7 |
2 files changed, 57 insertions, 0 deletions
diff --git a/tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c b/tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c index c93718dafd9b..852830536109 100644 --- a/tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c +++ b/tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c @@ -137,6 +137,52 @@ cleanup: stacktrace_ips__destroy(skel); } +static void test_stacktrace_ips_kprobe(bool retprobe) +{ + LIBBPF_OPTS(bpf_kprobe_opts, opts, + .retprobe = retprobe + ); + LIBBPF_OPTS(bpf_test_run_opts, topts); + struct stacktrace_ips *skel; + + skel = stacktrace_ips__open_and_load(); + if (!ASSERT_OK_PTR(skel, "stacktrace_ips__open_and_load")) + return; + + if (!skel->kconfig->CONFIG_UNWINDER_ORC) { + test__skip(); + goto cleanup; + } + + skel->links.kprobe_test = bpf_program__attach_kprobe_opts( + skel->progs.kprobe_test, + "bpf_testmod_stacktrace_test", &opts); + if (!ASSERT_OK_PTR(skel->links.kprobe_test, "bpf_program__attach_kprobe_opts")) + goto cleanup; + + trigger_module_test_read(1); + + load_kallsyms(); + + if (retprobe) { + check_stacktrace_ips(bpf_map__fd(skel->maps.stackmap), skel->bss->stack_key, 4, + ksym_get_addr("bpf_testmod_stacktrace_test_3"), + ksym_get_addr("bpf_testmod_stacktrace_test_2"), + ksym_get_addr("bpf_testmod_stacktrace_test_1"), + ksym_get_addr("bpf_testmod_test_read")); + } else { + check_stacktrace_ips(bpf_map__fd(skel->maps.stackmap), skel->bss->stack_key, 5, + ksym_get_addr("bpf_testmod_stacktrace_test"), + ksym_get_addr("bpf_testmod_stacktrace_test_3"), + ksym_get_addr("bpf_testmod_stacktrace_test_2"), + ksym_get_addr("bpf_testmod_stacktrace_test_1"), + ksym_get_addr("bpf_testmod_test_read")); + } + +cleanup: + stacktrace_ips__destroy(skel); +} + static void __test_stacktrace_ips(void) { if (test__start_subtest("kprobe_multi")) @@ -145,6 +191,10 @@ static void __test_stacktrace_ips(void) test_stacktrace_ips_kprobe_multi(true); if (test__start_subtest("raw_tp")) test_stacktrace_ips_raw_tp(); + if (test__start_subtest("kprobe")) + test_stacktrace_ips_kprobe(false); + if (test__start_subtest("kretprobe")) + test_stacktrace_ips_kprobe(true); } #else static void __test_stacktrace_ips(void) diff --git a/tools/testing/selftests/bpf/progs/stacktrace_ips.c b/tools/testing/selftests/bpf/progs/stacktrace_ips.c index a96c8150d7f5..cae077a4061b 100644 --- a/tools/testing/selftests/bpf/progs/stacktrace_ips.c +++ b/tools/testing/selftests/bpf/progs/stacktrace_ips.c @@ -31,6 +31,13 @@ int unused(void) __u32 stack_key; +SEC("kprobe") +int kprobe_test(struct pt_regs *ctx) +{ + stack_key = bpf_get_stackid(ctx, &stackmap, 0); + return 0; +} + SEC("kprobe.multi") int kprobe_multi_test(struct pt_regs *ctx) { |