net/sched: act_ct: fix err check for nf_conntrack_confirm
commit 8955b90c3cdad199137809aac8ccbbb585355913 upstream.
The confirm operation should be checked. If there are any failed,
the packet should be dropped like in ovs and netfilter.
Fixes: b57dc7c13e
("net/sched: Introduce action ct")
Signed-off-by: wenxu <wenxu@ucloud.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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parent
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@ -474,7 +474,8 @@ static int tcf_ct_act(struct sk_buff *skb, const struct tc_action *a,
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/* This will take care of sending queued events
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* even if the connection is already confirmed.
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*/
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nf_conntrack_confirm(skb);
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if (nf_conntrack_confirm(skb) != NF_ACCEPT)
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goto drop;
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}
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out_push:
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