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>
diff --git a/net/packet/af_packet.c b/net/packet/af_packet.c
index 3891702..d9d4970 100644
--- a/net/packet/af_packet.c
+++ b/net/packet/af_packet.c
@@ -2448,8 +2448,12 @@
{
struct packet_sock *po = pkt_sk(sk);
- if (po->fanout)
+ if (po->fanout) {
+ if (dev)
+ dev_put(dev);
+
return -EINVAL;
+ }
lock_sock(sk);