diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 45be9e9c595ff5582aa576cbf3408fbdb39f2ebe..05e2b7acf4d7bb83a4b3530ccac139a398af7bc1 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -170,7 +170,7 @@ static void rt6_uncached_list_flush_dev(struct net_device *dev)
 			struct inet6_dev *rt_idev = rt->rt6i_idev;
 			struct net_device *rt_dev = rt->dst.dev;
 
-			if (rt_idev->dev == dev) {
+			if (rt_idev && rt_idev->dev == dev) {
 				rt->rt6i_idev = in6_dev_get(blackhole_netdev);
 				in6_dev_put(rt_idev);
 			}