From: Steffen Klassert <steffen.klassert@secunet.com>
Date: Fri, 25 Aug 2017 09:05:42 +0200
Subject: [PATCH] ipv6: Fix may be used uninitialized warning in rt6_check
References: bnc#1060662
Patch-mainline: v4.12.14
Git-commit: 3614364527daa870264f6dde77f02853cdecd02c
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>
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
net/ipv6/route.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/net/ipv6/route.c b/net/ipv6/route.c
index b75f79a07962..9b93b4a1f48e 100644
--- a/net/ipv6/route.c
+++ b/net/ipv6/route.c
@@ -1290,7 +1290,7 @@ static void rt6_dst_from_metrics_check(struct rt6_info *rt)
static struct dst_entry *rt6_check(struct rt6_info *rt, u32 cookie)
{
- u32 rt_cookie;
+ u32 rt_cookie = 0;
if (!rt6_get_cookie_safe(rt, &rt_cookie) || rt_cookie != cookie)
return NULL;
--
2.14.2