netdev - [PATCH] selftests/bpf: fix potential unreleased lock

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Date:   Fri, 27 Aug 2021 00:41:40 -0700
From:   Chengfeng Ye <cyeaa@...nect.ust.hk>
To:     ast@...nel.org, daniel@...earbox.net, kafai@...com
Cc:     andrii@...nel.org, songliubraving@...com, yhs@...com,
        john.fastabend@...il.com, kpsingh@...nel.org,
        netdev@...r.kernel.org, bpf@...r.kernel.org,
        linux-kselftest@...r.kernel.org,
        Chengfeng Ye <cyeaa@...nect.ust.hk>
Subject: [PATCH] selftests/bpf: fix potential unreleased lock

This lock is not released if the program
return at the patched branch.

Cc: cyeaa@...nect.ust.hk
Signed-off-by: Chengfeng Ye <cyeaa@...nect.ust.hk>
---
 tools/testing/selftests/bpf/prog_tests/sockopt_inherit.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/prog_tests/sockopt_inherit.c b/tools/testing/selftests/bpf/prog_tests/sockopt_inherit.c
index ec281b0363b8..86f97681ad89 100644
--- a/tools/testing/selftests/bpf/prog_tests/sockopt_inherit.c
+++ b/tools/testing/selftests/bpf/prog_tests/sockopt_inherit.c
@@ -195,8 +195,10 @@ static void run_test(int cgroup_fd)
 
 	pthread_mutex_lock(&server_started_mtx);
 	if (CHECK_FAIL(pthread_create(&tid, NULL, server_thread,
-				      (void *)&server_fd)))
+				      (void *)&server_fd))) {
+		pthread_mutex_unlock(&server_started_mtx);
 		goto close_server_fd;
+	}
 	pthread_cond_wait(&server_started, &server_started_mtx);
 	pthread_mutex_unlock(&server_started_mtx);
 
-- 
2.17.1