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authorEric Dumazet <eric.dumazet@gmail.com>2010-06-01 06:04:49 -0400
committerDavid S. Miller <davem@davemloft.net>2010-06-02 05:26:39 -0400
commitfafeeb6c80e3842c6dc19d05de09a23f23eef0d8 (patch)
tree47a177d76fa0833a324737e103d5128ad77b231b
parentb42d9165e1e3d92e4e3318642463dbe592a12568 (diff)
xfrm: force a dst reference in __xfrm_route_forward()
Packets going through __xfrm_route_forward() have a not refcounted dst entry, since we enabled a noref forwarding path. xfrm_lookup() might incorrectly release this dst entry. It's a bit late to make invasive changes in xfrm_lookup(), so lets force a refcount in this path. Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
-rw-r--r--net/xfrm/xfrm_policy.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/net/xfrm/xfrm_policy.c b/net/xfrm/xfrm_policy.c
index d965a2bad8d3..4bf27d901333 100644
--- a/net/xfrm/xfrm_policy.c
+++ b/net/xfrm/xfrm_policy.c
@@ -2153,6 +2153,7 @@ int __xfrm_route_forward(struct sk_buff *skb, unsigned short family)
2153 return 0; 2153 return 0;
2154 } 2154 }
2155 2155
2156 skb_dst_force(skb);
2156 dst = skb_dst(skb); 2157 dst = skb_dst(skb);
2157 2158
2158 res = xfrm_lookup(net, &dst, &fl, NULL, 0) == 0; 2159 res = xfrm_lookup(net, &dst, &fl, NULL, 0) == 0;