[RFC bpf-next 08/10] selftests/bpf: Add uprobe session errors test
From: Jiri Olsa <jolsa@kernel.org>
Date: 2024-06-04 20:04:12
Also in:
bpf, lkml
Subsystem:
bpf [general] (safe dynamic programs and tools), bpf [selftests] (test runners & infrastructure), kernel selftest framework, the rest · Maintainers:
Alexei Starovoitov, Daniel Borkmann, Andrii Nakryiko, Eduard Zingerman, Kumar Kartikeya Dwivedi, Shuah Khan, Linus Torvalds
Adding uprobe session test to check that just single session instance is allowed or single uprobe. Signed-off-by: Jiri Olsa <jolsa@kernel.org> --- .../bpf/prog_tests/uprobe_multi_test.c | 27 +++++++++++++++++++ 1 file changed, 27 insertions(+)
diff --git a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c
index fddca2597818..4bff681f0d7d 100644
--- a/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c
+++ b/tools/testing/selftests/bpf/prog_tests/uprobe_multi_test.c@@ -533,6 +533,31 @@ static void test_session_skel_api(void) uprobe_multi_session__destroy(skel); } +static void test_session_error_multiple_instances(void) +{ + struct uprobe_multi_session *skel_1 = NULL, *skel_2 = NULL; + int err; + + skel_1 = uprobe_multi_session__open_and_load(); + if (!ASSERT_OK_PTR(skel_1, "fentry_raw_skel_load")) + goto cleanup; + + err = uprobe_multi_session__attach(skel_1); + if (!ASSERT_OK(err, " kprobe_multi_session__attach")) + goto cleanup; + + skel_2 = uprobe_multi_session__open_and_load(); + if (!ASSERT_OK_PTR(skel_2, "fentry_raw_skel_load")) + goto cleanup; + + err = uprobe_multi_session__attach(skel_2); + ASSERT_EQ(err, -EBUSY, " kprobe_multi_session__attach"); + +cleanup: + uprobe_multi_session__destroy(skel_1); + uprobe_multi_session__destroy(skel_2); +} + static void test_bench_attach_uprobe(void) { long attach_start_ns = 0, attach_end_ns = 0;
@@ -623,4 +648,6 @@ void test_uprobe_multi_test(void) test_attach_api_fails(); if (test__start_subtest("session")) test_session_skel_api(); + if (test__start_subtest("session_errors")) + test_session_error_multiple_instances(); }
--
2.45.1