netdev - [patch -next] rtnetlink: unlock on error path in netlink

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Message-ID: <20110615131142.GE23739@shale.localdomain>
Date:	Wed, 15 Jun 2011 16:11:42 +0300
From:	Dan Carpenter <error27@...il.com>
To:	Greg Rose <gregory.v.rose@...el.com>
Cc:	Eric Dumazet <eric.dumazet@...il.com>,
	Patrick McHardy <kaber@...sh.net>,
	Chris Wright <chrisw@...s-sol.org>,
	"David S. Miller" <davem@...emloft.net>,
	Jeff Kirsher <jeffrey.t.kirsher@...el.com>,
	"open list:NETWORKING [GENERAL]" <netdev@...r.kernel.org>,
	kernel-janitors@...r.kernel.org
Subject: [patch -next] rtnetlink: unlock on error path in netlink_dump()

In c7ac8679bec939 "rtnetlink: Compute and store minimum ifinfo dump
size", we moved the allocation under the lock so we need to unlock
on error path.

Signed-off-by: Dan Carpenter <error27@...il.com>

diff --git a/net/netlink/af_netlink.c b/net/netlink/af_netlink.c
index 0b92f7549..ca5276c 100644
--- a/net/netlink/af_netlink.c
+++ b/net/netlink/af_netlink.c
@@ -1676,7 +1676,7 @@ static int netlink_dump(struct sock *sk)
 
 	skb = sock_rmalloc(sk, alloc_size, 0, GFP_KERNEL);
 	if (!skb)
-		goto errout;
+		goto errout_skb;
 
 	len = cb->dump(skb, cb);
 
@@ -1716,7 +1716,6 @@ static int netlink_dump(struct sock *sk)
 errout_skb:
 	mutex_unlock(nlk->cb_mutex);
 	kfree_skb(skb);
-errout:
 	return err;
 }
 
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