netdev - Re: [PATCH net 1/4] netfilter: xt_recent: Fix attempt to update deleted entry

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Date:   Sun, 7 Feb 2021 20:36:16 +0100 (CET)
From:   Jozsef Kadlecsik <kadlec@...filter.org>
To:     Reindl Harald <h.reindl@...lounge.net>
cc:     Pablo Neira Ayuso <pablo@...filter.org>,
        netfilter-devel@...r.kernel.org, davem@...emloft.net,
        netdev@...r.kernel.org, kuba@...nel.org
Subject: Re: [PATCH net 1/4] netfilter: xt_recent: Fix attempt to update
 deleted entry

On Fri, 5 Feb 2021, Reindl Harald wrote:

> what makes me thinking about the ones without --reap - how is it 
> handeled in that case, i mean there must be some LRU logic present 
> anyways given that --reap is not enabled by default (otherwise that bug 
> would not have hitted me so long randomly)

Yes, checking the code I was wrong: when the recent table is full, the 
oldest entry is automatically removed to make space for the new one.

Best regards,
Jozsef
-
E-mail  : kadlec@...ckhole.kfki.hu, kadlecsik.jozsef@...ner.hu
PGP key : https://wigner.hu/~kadlec/pgp_public_key.txt
Address : Wigner Research Centre for Physics
          H-1525 Budapest 114, POB. 49, Hungary