linux-kernel - [PATCH 1/3] selftests: mptcp: Fix incorrect file descriptor check in main

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Message-ID: <20250113085228.121778-2-liucong2@kylinos.cn>
Date: Mon, 13 Jan 2025 16:52:26 +0800
From: Cong Liu <liucong2@...inos.cn>
To: Matthieu Baerts <matttbe@...nel.org>,
	Mat Martineau <martineau@...nel.org>,
	Geliang Tang <geliang@...nel.org>,
	"'David S . Miller'" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>,
	Paolo Abeni <pabeni@...hat.com>,
	Simon Horman <horms@...nel.org>,
	Shuah Khan <shuah@...nel.org>
Cc: Cong Liu <liucong2@...inos.cn>,
	netdev@...r.kernel.org,
	mptcp@...ts.linux.dev,
	linux-kselftest@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/3] selftests: mptcp: Fix incorrect file descriptor check in main_loop

Fix a bug where the code was checking the wrong file descriptor
when opening the input file. The code was checking 'fd' instead
of 'fd_in', which could lead to incorrect error handling.

Signed-off-by: Cong Liu <liucong2@...inos.cn>
---
 tools/testing/selftests/net/mptcp/mptcp_connect.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/selftests/net/mptcp/mptcp_connect.c b/tools/testing/selftests/net/mptcp/mptcp_connect.c
index 4209b9569039..31f4c5618569 100644
--- a/tools/testing/selftests/net/mptcp/mptcp_connect.c
+++ b/tools/testing/selftests/net/mptcp/mptcp_connect.c
@@ -1249,7 +1249,7 @@ int main_loop(void)
 
 	if (cfg_input && cfg_sockopt_types.mptfo) {
 		fd_in = open(cfg_input, O_RDONLY);
-		if (fd < 0)
+		if (fd_in < 0)
 			xerror("can't open %s:%d", cfg_input, errno);
 	}
 
@@ -1272,7 +1272,7 @@ int main_loop(void)
 
 	if (cfg_input && !cfg_sockopt_types.mptfo) {
 		fd_in = open(cfg_input, O_RDONLY);
-		if (fd < 0)
+		if (fd_in < 0)
 			xerror("can't open %s:%d", cfg_input, errno);
 	}
 
-- 
2.43.0