diff --git a/[refs] b/[refs]
index 2afac0e2e548..eb24d4b5a324 100644
--- a/[refs]
+++ b/[refs]
@@ -1,2 +1,2 @@
 ---
-refs/heads/master: 3e2f61cd7a4e7642dcac4371734426e572f10370
+refs/heads/master: b4dd006760d671337b62532277b0296bcee8dfd4
diff --git a/trunk/net/ipv6/inet6_connection_sock.c b/trunk/net/ipv6/inet6_connection_sock.c
index c4f934176cab..30647857a375 100644
--- a/trunk/net/ipv6/inet6_connection_sock.c
+++ b/trunk/net/ipv6/inet6_connection_sock.c
@@ -252,6 +252,7 @@ struct dst_entry *inet6_csk_update_pmtu(struct sock *sk, u32 mtu)
 		return NULL;
 	dst->ops->update_pmtu(dst, sk, NULL, mtu);
 
-	return inet6_csk_route_socket(sk, &fl6);
+	dst = inet6_csk_route_socket(sk, &fl6);
+	return IS_ERR(dst) ? NULL : dst;
 }
 EXPORT_SYMBOL_GPL(inet6_csk_update_pmtu);