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xfrm: fix rcu_read_unlock usage in xfrm_local_error 

[ Upstream commit 46c0ef6e1e ]

In the xfrm_local_error, rcu_read_unlock should be called when afinfo
is not NULL. because xfrm_state_get_afinfo calls rcu_read_unlock
if afinfo is NULL.

Fixes: af5d27c4e1 ("xfrm: remove xfrm_state_put_afinfo")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
pull/10/head
Taehee Yoo 2018-03-16 11:35:51 +09:00 committed by Greg Kroah-Hartman
parent 942138f356
commit 404cbeb36e
1 changed files with 3 additions and 2 deletions
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5
net/xfrm/xfrm_output.c
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@ -285,8 +285,9 @@ void xfrm_local_error(struct sk_buff *skb, int mtu)
return;
afinfo = xfrm_state_get_afinfo(proto);
if (afinfo)
if (afinfo) {
afinfo->local_error(skb, mtu);
rcu_read_unlock();
rcu_read_unlock();
}
}
EXPORT_SYMBOL_GPL(xfrm_local_error);