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);