From: Shigeru Yoshida <syoshida@redhat.com>
Date: Sat, 2 Sep 2023 17:07:08 +0000 (+0900)
Subject: kcm: Destroy mutex in kcm_exit_net()
X-Git-Tag: v4.14.326~48
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=4ffbdd3a536d80fc676279ba5ba55040db7d0d96;p=thirdparty%2Fkernel%2Fstable.git

kcm: Destroy mutex in kcm_exit_net()

[ Upstream commit 6ad40b36cd3b04209e2d6c89d252c873d8082a59 ]

kcm_exit_net() should call mutex_destroy() on knet->mutex. This is especially
needed if CONFIG_DEBUG_MUTEXES is enabled.

Fixes: ab7ac4eb9832 ("kcm: Kernel Connection Multiplexor module")
Signed-off-by: Shigeru Yoshida <syoshida@redhat.com>
Link: https://lore.kernel.org/r/20230902170708.1727999-1-syoshida@redhat.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/net/kcm/kcmsock.c b/net/kcm/kcmsock.c
index fdce053f1099d..0589b6b560eca 100644
--- a/net/kcm/kcmsock.c
+++ b/net/kcm/kcmsock.c
@@ -1988,6 +1988,8 @@ static __net_exit void kcm_exit_net(struct net *net)
 	 * that all multiplexors and psocks have been destroyed.
 	 */
 	WARN_ON(!list_empty(&knet->mux_list));
+
+	mutex_destroy(&knet->mutex);
 }
 
 static struct pernet_operations kcm_net_ops = {