Use ASSERT_OK_FD to check the return value of join cgroup, or else this test will pass even if the fd < 0. ASSERT_OK_FD can print the error message to the console. Link: https://lore.kernel.org/all/6d62bd77-6733-40c7-b240-a1aeff55566c@xxxxxxxxx/ Suggested-by: Martin KaFai Lau <martin.lau@xxxxxxxxxx> Signed-off-by: Jason Xing <kerneljasonxing@xxxxxxxxx> --- tools/testing/selftests/bpf/prog_tests/setget_sockopt.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/selftests/bpf/prog_tests/setget_sockopt.c b/tools/testing/selftests/bpf/prog_tests/setget_sockopt.c index e12255121c15..e4dac529d424 100644 --- a/tools/testing/selftests/bpf/prog_tests/setget_sockopt.c +++ b/tools/testing/selftests/bpf/prog_tests/setget_sockopt.c @@ -202,7 +202,7 @@ static void test_nonstandard_opt(int family) void test_setget_sockopt(void) { cg_fd = test__join_cgroup(CG_NAME); - if (cg_fd < 0) + if (!ASSERT_OK_FD(cg_fd, "join cgroup")) return; if (create_netns()) -- 2.43.5
