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Date:   Mon, 13 May 2019 10:36:51 +0000
From:   Jagdish Motwani <>
To:     Pablo Neira Ayuso <>,
        Jagdish Motwani <>
CC:     "" <>,
        Jozsef Kadlecsik <>,
        Florian Westphal <>,
        "David S. Miller" <>,
        "" <>,
        "" <>,
        "" <>
Subject: RE: [PATCH net] netfilter: nf_queue:fix reinject verdict handling

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.

-----Original Message-----
From: Pablo Neira Ayuso <>
Sent: Monday, May 13, 2019 2:52 PM
To: Jagdish Motwani <>
Cc:; Jagdish Motwani <>; Jozsef Kadlecsik <>; Florian Westphal <>; David S. Miller <>;;;
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 <>
> 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 <>



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