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packet: fix possible dev refcnt leak when bind fail 

If bind is fail when bind is called after set PACKET_FANOUT
sock option, the dev refcnt will leak.

Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Wei Yongjun 2011-12-27 22:32:41 -05:00 committed by David S. Miller
parent c43c5f3958
commit aef950b4ba
1 changed files with 5 additions and 1 deletions
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6
net/packet/af_packet.c
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@ -2448,8 +2448,12 @@ static int packet_do_bind(struct sock *sk, struct net_device *dev, __be16 protoc
{
struct packet_sock *po = pkt_sk(sk);
if (po->fanout)
if (po->fanout) {
if (dev)
dev_put(dev);
return -EINVAL;
}
lock_sock(sk);