selftests/bpf: Add stacktrace ips test for raw_tp

Adding test that verifies we get expected initial 2 entries from
stacktrace for rawtp probe via ORC unwind.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Link: https://lore.kernel.org/r/20251104215405.168643-5-jolsa@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>

diff --git a/tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c b/tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c
index 6fca459ba550cb6ef0ab94b51249e1f80b572d7f..c9efdd2a5b18a5fff8e44b11b3ff4b53313d39c3 100644 (file)
--- a/tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c
+++ b/tools/testing/selftests/bpf/prog_tests/stacktrace_ips.c
@@ -84,12 +84,58 @@ cleanup:
        stacktrace_ips__destroy(skel);
 }
 
+static void test_stacktrace_ips_raw_tp(void)
+{
+       __u32 info_len = sizeof(struct bpf_prog_info);
+       LIBBPF_OPTS(bpf_test_run_opts, topts);
+       struct bpf_prog_info info = {};
+       struct stacktrace_ips *skel;
+       __u64 bpf_prog_ksym = 0;
+       int err;
+
+       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.rawtp_test = bpf_program__attach_raw_tracepoint(
+                                                       skel->progs.rawtp_test,
+                                                       "bpf_testmod_test_read");
+       if (!ASSERT_OK_PTR(skel->links.rawtp_test, "bpf_program__attach_raw_tracepoint"))
+               goto cleanup;
+
+       /* get bpf program address */
+       info.jited_ksyms = ptr_to_u64(&bpf_prog_ksym);
+       info.nr_jited_ksyms = 1;
+       err = bpf_prog_get_info_by_fd(bpf_program__fd(skel->progs.rawtp_test),
+                                     &info, &info_len);
+       if (!ASSERT_OK(err, "bpf_prog_get_info_by_fd"))
+               goto cleanup;
+
+       trigger_module_test_read(1);
+
+       load_kallsyms();
+
+       check_stacktrace_ips(bpf_map__fd(skel->maps.stackmap), skel->bss->stack_key, 2,
+                            bpf_prog_ksym,
+                            ksym_get_addr("bpf_trace_run2"));
+
+cleanup:
+       stacktrace_ips__destroy(skel);
+}
+
 static void __test_stacktrace_ips(void)
 {
        if (test__start_subtest("kprobe_multi"))
                test_stacktrace_ips_kprobe_multi(false);
        if (test__start_subtest("kretprobe_multi"))
                test_stacktrace_ips_kprobe_multi(true);
+       if (test__start_subtest("raw_tp"))
+               test_stacktrace_ips_raw_tp();
 }
 #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 e2eb30945c1b473355fc9cdbee51009aae73f182..a96c8150d7f5ae73dfd75c61fbd827062aa97589 100644 (file)
--- a/tools/testing/selftests/bpf/progs/stacktrace_ips.c
+++ b/tools/testing/selftests/bpf/progs/stacktrace_ips.c
@@ -38,4 +38,12 @@ int kprobe_multi_test(struct pt_regs *ctx)
        return 0;
 }
 
+SEC("raw_tp/bpf_testmod_test_read")
+int rawtp_test(void *ctx)
+{
+       /* Skip ebpf program entry in the stack. */
+       stack_key = bpf_get_stackid(ctx, &stackmap, 0);
+       return 0;
+}
+
 char _license[] SEC("license") = "GPL";