linux-kernel - Re: [PATCH 4.9 000/105] 4.9.55-stable review

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Date:   Thu, 12 Oct 2017 18:08:57 +0100
From:   Ben Hutchings <ben.hutchings@...ethink.co.uk>
To:     Shuah Khan <shuahkh@....samsung.com>,
        Xin Long <lucien.xin@...il.com>,
        Andreas Radke <andreas.radke@...lbox.org>
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "davem@...emloft.net" <davem@...emloft.net>,
        LKML <linux-kernel@...r.kernel.org>,
        torvalds@...ux-foundation.org, akpm@...ux-foundation.org,
        linux@...ck-us.net, patches@...nelci.org, stable@...r.kernel.org
Subject: Re: [PATCH 4.9 000/105] 4.9.55-stable review

On Thu, 2017-10-12 at 10:54 -0600, Shuah Khan wrote:
> On 10/12/2017 09:35 AM, Shuah Khan wrote:
> > On 10/12/2017 09:25 AM, Xin Long wrote:
> > > On Thu, Oct 12, 2017 at 11:18 PM, Andreas Radke
> > > <andreas.radke@...lbox.org> wrote:
> > > > Building the 4.9.x kernel package for Arch Linux 4.9.55 gives
> > > > this IPv4 error here:
[...]
> > > > Okt 12 17:09:38 server64 dhcpd[638]: Can't install packet
> > > > filter program: Cannot allocate memory
[...]
> > > pls try revert:
> > > commit 02f7e4101092b88e57c73171174976c8a72a3eba
> > 
> > Correction. The commit is:
> > 
> > 345c66695569db83eed100723e4df72cb54df7de
> > 
> > I will try the revert and let you know.
> 
> okay reverting the
> 
> commit 345c66695569db83eed100723e4df72cb54df7de
> Author: Eric Dumazet <edumazet@...gle.com>
> Date:   Mon Oct 2 12:20:51 2017 -0700
> 
>     socket, bpf: fix possible use after free
>     
>     
>     [ Upstream commit eefca20eb20c66b06cf5ed09b49b1a7caaa27b7b ]
[...]
> fixes the issue. Looks like this is a fix for another problem.

It seems to depend on:

commit 4c355cdfbba537971b5c3849680b1b6453a7a383
Author: Reshetova, Elena <elena.reshetova@...el.com>
Date:   Tue Mar 21 13:59:19 2017 +0200

    net: convert sk_filter.refcnt from atomic_t to refcount_t

That split up sk_filter_charge() so that the refcount initialisation
won't trip the increment-from-zero check.

Ben.

> Anyway - I have 4.9.55 - minus
> 345c66695569db83eed100723e4df72cb54df7de
> running now with networking operational.
> 
> thanks,
> -- Shuah
> 
> 
> 
-- 
Ben Hutchings
Software Developer, Codethink Ltd.