From: Steffen Klassert <steffen.klassert@secunet.com>
Date: Fri, 25 Aug 2017 07:05:42 +0000 (+0200)
Subject: ipv6: Fix may be used uninitialized warning in rt6_check
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=239dd6f928f51241453c6d0b19eb6143774e0879;p=pandora-kernel.git

ipv6: Fix may be used uninitialized warning in rt6_check

commit 3614364527daa870264f6dde77f02853cdecd02c upstream.

rt_cookie might be used uninitialized, fix this by
initializing it.

Fixes: c5cff8561d2d ("ipv6: add rcu grace period before freeing fib6_node")
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
[bwh: Backported to 3.2: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---

diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index b1eb89c74ff6..6fc91f9e8e1b 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -964,7 +964,7 @@ 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;
+	u32 rt_cookie = 0;
 
 	rt = (struct rt6_info *) dst;