diff --git a/net/ipv6/reassembly.c b/net/ipv6/reassembly.c
index da5bd0e..dce699f 100644
--- a/net/ipv6/reassembly.c
+++ b/net/ipv6/reassembly.c
@@ -208,18 +208,17 @@
 	fq_kill(fq);
 
 	net = container_of(fq->q.net, struct net, ipv6.frags);
-	dev = dev_get_by_index(net, fq->iif);
-	if (!dev)
-		goto out;
-
 	rcu_read_lock();
+	dev = dev_get_by_index_rcu(net, fq->iif);
+	if (!dev)
+		goto out_rcu_unlock;
+
 	IP6_INC_STATS_BH(net, __in6_dev_get(dev), IPSTATS_MIB_REASMTIMEOUT);
 	IP6_INC_STATS_BH(net, __in6_dev_get(dev), IPSTATS_MIB_REASMFAILS);
-	rcu_read_unlock();
 
 	/* Don't send error if the first segment did not arrive. */
 	if (!(fq->q.last_in & INET_FRAG_FIRST_IN) || !fq->q.fragments)
-		goto out;
+		goto out_rcu_unlock;
 
 	/*
 	   But use as source device on which LAST ARRIVED
@@ -228,9 +227,9 @@
 	 */
 	fq->q.fragments->dev = dev;
 	icmpv6_send(fq->q.fragments, ICMPV6_TIME_EXCEED, ICMPV6_EXC_FRAGTIME, 0, dev);
+out_rcu_unlock:
+	rcu_read_unlock();
 out:
-	if (dev)
-		dev_put(dev);
 	spin_unlock(&fq->q.lock);
 	fq_put(fq);
 }