linux-kernel - [PATCH] selftests/bpf:fix a resource leak in run

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Message-Id: <20240711072845.2243176-1-make24@iscas.ac.cn>
Date: Thu, 11 Jul 2024 15:28:45 +0800
From: Ma Ke <make24@...as.ac.cn>
To: andrii@...nel.org,
	eddyz87@...il.com,
	mykolal@...com,
	ast@...nel.org,
	daniel@...earbox.net,
	martin.lau@...ux.dev,
	song@...nel.org,
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	john.fastabend@...il.com,
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	haoluo@...gle.com,
	jolsa@...nel.org,
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Cc: bpf@...r.kernel.org,
	linux-kselftest@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Ma Ke <make24@...as.ac.cn>
Subject: [PATCH] selftests/bpf:fix a resource leak in run_tests()

The requested resources should be closed before return in run_tests(),
otherwise resource leak will occur. Add a check of cg_fd before close().

Fixes: 1d436885b23b ("selftests/bpf: Selftest for sys_bind post-hooks.")
Signed-off-by: Ma Ke <make24@...as.ac.cn>
---
 tools/testing/selftests/bpf/test_sock.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/bpf/test_sock.c b/tools/testing/selftests/bpf/test_sock.c
index 810c3740b2cc..bb5038fc15ac 100644
--- a/tools/testing/selftests/bpf/test_sock.c
+++ b/tools/testing/selftests/bpf/test_sock.c
@@ -550,7 +550,8 @@ int main(int argc, char **argv)
 err:
 	err = -1;
 out:
-	close(cgfd);
+	if (cgfd >= 0)
+		close(cgfd);
 	cleanup_cgroup_environment();
 	return err;
 }
-- 
2.25.1