From: veritas501 <hxzene@gmail.com>
To: davem@davemloft.net
Cc: veritas501 <hxzene@gmail.com>, Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>,
Simon Horman <horms@kernel.org>, Ingo Molnar <mingo@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Herbert Xu <herbert@gondor.apana.org.au>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH] net: appletalk: Fix device refcount leak in atrtr_create()
Date: Tue, 8 Jul 2025 09:04:30 +0000 [thread overview]
Message-ID: <20250708090431.472195-1-hxzene@gmail.com> (raw)
When updating an existing route entry in atrtr_create(), the old device
reference was not being released before assigning the new device,
leading to a device refcount leak. Fix this by calling dev_put() to
release the old device reference before holding the new one.
Fixes: c7f905f0f6d4 ("[ATALK]: Add missing dev_hold() to atrtr_create().")
Signed-off-by: veritas501 <hxzene@gmail.com>
---
net/appletalk/ddp.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/net/appletalk/ddp.c b/net/appletalk/ddp.c
index 73ea7e67f05a..e5708870a249 100644
--- a/net/appletalk/ddp.c
+++ b/net/appletalk/ddp.c
@@ -576,6 +576,8 @@ static int atrtr_create(struct rtentry *r, struct net_device *devhint)
/* Fill in the routing entry */
rt->target = ta->sat_addr;
+ if (rt->dev)
+ dev_put(rt->dev); /* Release old device */
dev_hold(devhint);
rt->dev = devhint;
rt->flags = r->rt_flags;
--
2.34.1
next reply other threads:[~2025-07-08 9:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-08 9:04 veritas501 [this message]
2025-07-08 13:04 ` Jakub Kicinski
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