diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index 0407bbc5a028be646cbbdab861489fa0314400db..354a5b8d016ffa37f7969aa13d6b3a02d3e31691 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -2201,10 +2201,12 @@ static struct dst_entry *ip6_negative_advice(struct dst_entry *dst)
 
 	if (rt) {
 		if (rt->rt6i_flags & RTF_CACHE) {
+			rcu_read_lock();
 			if (rt6_check_expired(rt)) {
 				rt6_remove_exception_rt(rt);
 				dst = NULL;
 			}
+			rcu_read_unlock();
 		} else {
 			dst_release(dst);
 			dst = NULL;