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net/sched: act_ct: fix err check for nf_conntrack_confirm

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commit 8955b90c3c 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>
This commit is contained in:
wenxu 2021-07-02 11:34:31 +08:00 • committed by Greg Kroah-Hartman
commit c3bc9ce7d4
1 changed files with 2 additions and 1 deletions
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3
net/sched/act_ct.c
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@ -1023,7 +1023,8 @@ do_nat:
/* This will take care of sending queued events
* even if the connection is already confirmed.
*/
nf_conntrack_confirm(skb);
if (nf_conntrack_confirm(skb) != NF_ACCEPT)
goto drop;
}
if (!skip_add)