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xfrm: fix rcu_read_unlock usage in xfrm_local_error 

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>
This commit is contained in:
Taehee Yoo 2018-03-16 11:35:51 +09:00 committed by Steffen Klassert
parent 51d4740f88
commit 46c0ef6e1e
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; return;
afinfo = xfrm_state_get_afinfo(proto); afinfo = xfrm_state_get_afinfo(proto);
if (afinfo) if (afinfo) {
afinfo->local_error(skb, mtu); afinfo->local_error(skb, mtu);
rcu_read_unlock(); rcu_read_unlock();
}
} }
EXPORT_SYMBOL_GPL(xfrm_local_error); EXPORT_SYMBOL_GPL(xfrm_local_error);