linux-kernel - [PATCH] Remove extra unlock for the mutex

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Message-Id: <20231010224630.238254-1-singhabhinav9051571833@gmail.com>
Date:   Wed, 11 Oct 2023 04:16:30 +0530
From:   Abhinav Singh <singhabhinav9051571833@...il.com>
To:     davem@...emloft.net, dsahern@...nel.org, edumazet@...gle.com,
        kuba@...nel.org, pabeni@...hat.com
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-kernel-mentees@...ts.linuxfoundation.org,
        Abhinav Singh <singhabhinav9051571833@...il.com>
Subject: [PATCH] Remove extra unlock for the mutex

There is a double unlock on mutex. This can cause undefined behaviour.

Signed-off-by: Abhinav Singh <singhabhinav9051571833@...il.com>
---
 net/ipv4/inet_connection_sock.c | 1 -
 1 file changed, 1 deletion(-)

diff --git a/net/ipv4/inet_connection_sock.c b/net/ipv4/inet_connection_sock.c
index aeebe8816689..f11fe8c727a4 100644
--- a/net/ipv4/inet_connection_sock.c
+++ b/net/ipv4/inet_connection_sock.c
@@ -597,7 +597,6 @@ int inet_csk_get_port(struct sock *sk, unsigned short snum)
 	}
 	if (head2_lock_acquired)
 		spin_unlock(&head2->lock);
-	spin_unlock_bh(&head->lock);
 	return ret;
 }
 EXPORT_SYMBOL_GPL(inet_csk_get_port);
-- 
2.39.2