X-Git-Url: https://git.openpandora.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=net%2Fipv6%2Froute.c;h=6fc91f9e8e1b9418ac8839176d4fab649b3d0f18;hb=ae0ebfe24b8ca8b5a10022d9dc448f2ddf32782d;hp=cda5cfe92f6bb8b617d08ee2250ded2361910045;hpb=cb424db7576009c506281f29893c8ee32af33555;p=pandora-kernel.git

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index cda5cfe92f6b..6fc91f9e8e1b 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -964,10 +964,11 @@ struct dst_entry *ip6_blackhole_route(struct net *net, struct dst_entry *dst_ori
 static struct dst_entry *ip6_dst_check(struct dst_entry *dst, u32 cookie)
 {
 	struct rt6_info *rt;
+	u32 rt_cookie = 0;
 
 	rt = (struct rt6_info *) dst;
 
-	if (rt->rt6i_node && (rt->rt6i_node->fn_sernum == cookie)) {
+	if (rt6_get_cookie_safe(rt, &rt_cookie) && rt_cookie == cookie) {
 		if (rt->rt6i_peer_genid != rt6_peer_genid()) {
 			if (!rt->rt6i_peer)
 				rt6_bind_peer(rt, 0);
@@ -1007,8 +1008,15 @@ static void ip6_link_failure(struct sk_buff *skb)
 		if (rt->rt6i_flags&RTF_CACHE) {
 			dst_set_expires(&rt->dst, 0);
 			rt->rt6i_flags |= RTF_EXPIRES;
-		} else if (rt->rt6i_node && (rt->rt6i_flags & RTF_DEFAULT))
-			rt->rt6i_node->fn_sernum = -1;
+		} else {
+			struct fib6_node *fn;
+
+			rcu_read_lock();
+			fn = rcu_dereference(rt->rt6i_node);
+			if (fn && (rt->rt6i_flags & RTF_DEFAULT))
+				fn->fn_sernum = -1;
+			rcu_read_unlock();
+		}
 	}
 }