linux-kernel - Re: slab corruption with current -git

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Message-ID: <f7tk2dff0sc.fsf@redhat.com>
Date:   Tue, 11 Oct 2016 09:55:15 -0400
From:   Aaron Conole <aconole@...heb.org>
To:     Michal Kubecek <mkubecek@...e.cz>
Cc:     David Miller <davem@...emloft.net>, torvalds@...ux-foundation.org,
        fw@...len.de, viro@...iv.linux.org.uk, akpm@...ux-foundation.org,
        axboe@...com, tytso@....edu, cl@...ux.com, pablo@...filter.org,
        linux-kernel@...r.kernel.org, linux-fsdevel@...r.kernel.org,
        netdev@...r.kernel.org, netfilter-devel@...r.kernel.org
Subject: Re: slab corruption with current -git

Michal Kubecek <mkubecek@...e.cz> writes:

> On Mon, Oct 10, 2016 at 04:24:01AM -0400, David Miller wrote:
>> From: David Miller <davem@...emloft.net>
>> Date: Sun, 09 Oct 2016 23:57:45 -0400 (EDT)
>> 
>> This means that the netns is possibly getting freed up before we
>> unregister the netfilter hooks.
>
> Sounds a bit like the issue discussed here:
>
>   https://marc.info/?l=netfilter-devel&m=146980917627262&w=2
>
> Could it be (partly) the same race condition?

It looks like it's possible.  It appears that there could be a
long-standing race between these.  I'll look into it more carefully, and
discuss with Pablo and Florian when they're situated from netdev
conference.

-Aaron