linux-kernel - Re: double free issue, mvpp2 driver, armada375 modules

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Date:   Tue, 13 Dec 2016 17:55:18 +0100
From:   Thomas Petazzoni <thomas.petazzoni@...e-electrons.com>
To:     Raphael G <raphael.glon@...p.ovh.com>
Cc:     <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <netdev@...r.kernel.org>,
        marcin wojtas <mw@...ihalf.com>, <davem@...emloft.net>,
        Grégory Clement 
        <gregory.clement@...e-electrons.com>
Subject: Re: double free issue, mvpp2 driver, armada375 modules

Hello,

On Mon, 2 May 2016 11:46:46 +0200, Raphael G wrote:

> enclosed the kernel panic we obtain after boot with a slightly patched 
> upstream kernel (4.5.2).
> 
> (as well as the patchset applied to the upstream kernel, so that you can 
> know which code we are talking about. Too bad we cannot use the upstream 
> kernel but we had no choice about this + we're no experts so we rely on 
> provided patches, adapted to our bootloader and hardware for this)
> 
> Reproduce:
> boot on kernel on an armada375 module, connect to it, launch a top in 
> commandline
> 
> As seen with Marcin Wojtas, reverting commit 
> e864b4c7b184bde36fa6a02bb3190983d2f796f9 fixes this issue.
> 
> Reporting upstream so that you can decide what should be done next

Thanks for your report. I have finally submitted a fix for this issue.
You can find it at:

  http://lists.infradead.org/pipermail/linux-arm-kernel/2016-December/473989.html

If you have the time to test it and report back, it would be very
useful.

Thanks a lot!

Thomas
-- 
Thomas Petazzoni, CTO, Free Electrons
Embedded Linux and Kernel engineering
http://free-electrons.com