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ipv6: drop metadata dst in ip6_route_input

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The fix in commit 48fb6b5545 is incomplete, as now ip6_route_input can be
called with non-NULL dst if it's a metadata dst and the reference is leaked.
Drop the reference.

Fixes: 48fb6b5545 ("ipv6: fix crash over flow-based vxlan device")
Fixes: ee122c79d4 ("vxlan: Flow based tunneling")
CC: Wei-Chun Chao <weichunc@plumgrid.com>
CC: Thomas Graf <tgraf@suug.ch>
Signed-off-by: Jiri Benc <jbenc@redhat.com>
Acked-by: Thomas Graf <tgraf@suug.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jiri Benc 2015-08-20 13:56:26 +02:00 committed by David S. Miller
parent 61adedf3e3
commit 06e9d040ba
1 changed files with 1 additions and 0 deletions
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net/ipv6/route.c
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@ -1140,6 +1140,7 @@ void ip6_route_input(struct sk_buff *skb)
.flowi6_proto = iph->nexthdr,
};
skb_dst_drop(skb);
skb_dst_set(skb, ip6_route_input_lookup(net, skb->dev, &fl6, flags));
}