NAK: [SRU][F:linux-bluefield][PATCH] net/sched: act_ct: fix err check for nf_conntrack_confirm

[Tim Gardner]

See v2

On 7/6/21 2:12 PM, Bodong Wang wrote:
> From: wenxu <wenxu at ucloud.cn>
> 
> BugLink: https://bugs.launchpad.net/bugs/1934819
> 
> The confirm operation should be checked. If there are any failed,
> the packet should be dropped like in ovs and netfilter.
> 
> Fixes: b57dc7c13ea9 ("net/sched: Introduce action ct")
> Signed-off-by: wenxu <wenxu at ucloud.cn>
> Signed-off-by: David S. Miller <davem at davemloft.net>
> (cherry picked from commit 8955b90c3cdad199137809aac8ccbbb585355913)
> https://patchwork.kernel.org/project/netdevbpf/patch/1625196871-2780-1-git-send-email-wenxu@ucloud.cn/
> Signed-off-by: Bodong Wang <bodong at nvidia.com>
> ---
>   net/sched/act_ct.c | 3 ++-
>   1 file changed, 2 insertions(+), 1 deletion(-)
> 
> diff --git a/net/sched/act_ct.c b/net/sched/act_ct.c
> index 43c5b3f..6299214 100644
> --- a/net/sched/act_ct.c
> +++ b/net/sched/act_ct.c
> @@ -1004,7 +1004,8 @@ static int tcf_ct_act(struct sk_buff *skb, const struct tc_action *a,
>   		/* 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)
> 

-- 
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Tim Gardner
Canonical, Inc