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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>
This commit is contained in:
Steffen Klassert 2017-08-25 09:05:42 +02:00 committed by syphyr
parent f2195d2e12
commit 5ca6092186
1 changed files with 1 additions and 1 deletions
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net/ipv6/route.c
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@ -1072,7 +1072,7 @@ 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;