linux-kernel - [PATCH] selftests: net: avoid memory leak

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Message-Id: <20250826031540.28010-1-min_halo@163.com>
Date: Tue, 26 Aug 2025 11:15:40 +0800
From: Zongmin Zhou <min_halo@....com>
To: davem@...emloft.net,
	edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	horms@...nel.org,
	shuah@...nel.org
Cc: netdev@...r.kernel.org,
	linux-kselftest@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Zongmin Zhou <zhouzongmin@...inos.cn>
Subject: [PATCH] selftests: net: avoid memory leak

From: Zongmin Zhou <zhouzongmin@...inos.cn>

The buffer be used without free,fix it to avoid memory leak.

Signed-off-by: Zongmin Zhou <zhouzongmin@...inos.cn>
---
 tools/testing/selftests/net/cmsg_sender.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/tools/testing/selftests/net/cmsg_sender.c b/tools/testing/selftests/net/cmsg_sender.c
index a825e628aee7..5358aa09ecb9 100644
--- a/tools/testing/selftests/net/cmsg_sender.c
+++ b/tools/testing/selftests/net/cmsg_sender.c
@@ -491,6 +491,7 @@ int main(int argc, char *argv[])
 	if (err) {
 		fprintf(stderr, "Can't resolve address [%s]:%s\n",
 			opt.host, opt.service);
+		free(buf);
 		return ERN_SOCK_CREATE;
 	}
 
@@ -501,6 +502,7 @@ int main(int argc, char *argv[])
 	if (fd < 0) {
 		fprintf(stderr, "Can't open socket: %s\n", strerror(errno));
 		freeaddrinfo(ai);
+		free(buf);
 		return ERN_RESOLVE;
 	}
 
@@ -575,5 +577,6 @@ int main(int argc, char *argv[])
 err_out:
 	close(fd);
 	freeaddrinfo(ai);
+	free(buf);
 	return err;
 }
-- 
2.34.1