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xfrm: fix a read lock imbalance in make_blackhole

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[ Upstream commit 433a195480 ]

if xfrm_policy_get_afinfo returns 0, it has already released the read
lock, xfrm_policy_put_afinfo should not be called again.

Signed-off-by: Li RongQing <roy.qing.li@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Li RongQing
2012-09-17 22:40:10 +00:00
committed by Greg Kroah-Hartman
parent 182d22d51b
commit 72ab84bd19
1 changed files with 1 additions and 1 deletions
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2
net/xfrm/xfrm_policy.c
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@@ -1759,7 +1759,7 @@ static struct dst_entry *make_blackhole(struct net *net, u16 family,
if (!afinfo) {
dst_release(dst_orig);
ret = ERR_PTR(-EINVAL);
return ERR_PTR(-EINVAL);
} else {
ret = afinfo->blackhole_route(net, dst_orig);
}