netdev - [PATCH net-next] ipv6: fix a bad cast in ip6_dst_lookup

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Message-ID: <1341559145.3265.141.camel@edumazet-glaptop>
Date:	Fri, 06 Jul 2012 09:19:05 +0200
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	David Miller <davem@...emloft.net>
Cc:	wfg@...ux.intel.com, netdev@...r.kernel.org,
	steffen.klassert@...unet.com
Subject: [PATCH net-next] ipv6: fix a bad cast in ip6_dst_lookup_tail()

From: Eric Dumazet <edumazet@...gle.com>

Fix a bug in ip6_dst_lookup_tail(), where typeof(dst) is 
"struct dst_entry **", not "struct dst_entry *"

Reported-by: Fengguang Wu <wfg@...ux.intel.com>
Signed-off-by: Eric Dumazet <edumazet@...gle.com>
---
diff --git a/net/ipv6/ip6_output.c b/net/ipv6/ip6_output.c
index 6d9c0ab..c6af596 100644
--- a/net/ipv6/ip6_output.c
+++ b/net/ipv6/ip6_output.c
@@ -975,7 +975,7 @@ static int ip6_dst_lookup_tail(struct sock *sk,
 	 * dst entry of the nexthop router
 	 */
 	rcu_read_lock();
-	rt = (struct rt6_info *) dst;
+	rt = (struct rt6_info *) *dst;
 	n = rt->n;
 	if (n && !(n->nud_state & NUD_VALID)) {
 		struct inet6_ifaddr *ifp;


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