Hi Pablo,
The case I am referring to is : If there are more than 1 hooks returning NF_QUEUE verdict.
When the first queue reinjects the packet, 'nf_reinject' starts traversing hooks with hook_index (i).
However if it again receives a NF_QUEUE verdict (by some other netfilter hook), it queue with the wrong hook_index.
So, when the second queue reinjects the packet, it re-executes some hooks in between the first 2 hooks.
Thanks, I will mark : Fixes: 960632ece694 ("netfilter: convert hook list to an array") and update the description also.
Regards,
Jagdish
-----Original Message-----
From: Pablo Neira Ayuso <pablo@xxxxxxxxxxxxx>
Sent: Monday, May 13, 2019 2:52 PM
To: Jagdish Motwani <j.k.motwani@xxxxxxxxx>
Cc: netdev@xxxxxxxxxxxxxxx; Jagdish Motwani <Jagdish.Motwani@xxxxxxxxxx>; Jozsef Kadlecsik <kadlec@xxxxxxxxxxxxxxxxx>; Florian Westphal <fw@xxxxxxxxx>; David S. Miller <davem@xxxxxxxxxxxxx>; netfilter-devel@xxxxxxxxxxxxxxx; coreteam@xxxxxxxxxxxxx; linux-kernel@xxxxxxxxxxxxxxx
Subject: Re: [PATCH net] netfilter: nf_queue:fix reinject verdict handling
Hi Jagdish,
On Thu, May 09, 2019 at 12:01:14AM +0530, Jagdish Motwani wrote:
> From: Jagdish Motwani <jagdish.motwani@xxxxxxxxxx>
>
> In case of more than 1 nf_queues, hooks between them are being
> executed more than once.
This refers to NF_REPEAT, correct?
I think this broke with 960632ece6949. If so, it would be good to add the following tag to this patch then. It's useful for robots collecting fixes for -stable kernels.
Fixes: 960632ece694 ("netfilter: convert hook list to an array")
> Signed-off-by: Jagdish Motwani <jagdish.motwani@xxxxxxxxxx>
Thanks.
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