From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <linux-kernel-owner@vger.kernel.org>
Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand
        id S933571AbcKNQqU (ORCPT <rfc822;w@1wt.eu>);
        Mon, 14 Nov 2016 11:46:20 -0500
Received: from ec2-52-27-115-49.us-west-2.compute.amazonaws.com ([52.27.115.49]:33721
        "EHLO osg.samsung.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org
        with ESMTP id S1752253AbcKNQqR (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Mon, 14 Nov 2016 11:46:17 -0500
Subject: Re: Linux 4.9-rc4 double free from pp_release()
To: Sudip Mukherjee <sudipm.mukherjee@gmail.com>,
        Shuah Khan <shuahkhan@gmail.com>, Greg KH <gregkh@linuxfoundation.org>
References: <CAKocOOMf9mo7ZLtvBUZW_mjOC06i0G6peAbZi-CB9YKD76Kt+g@mail.gmail.com>
 <5823AA6D.8060501@gmail.com>
Cc: LKML <linux-kernel@vger.kernel.org>,
        Shuah Khan <shuahkh@osg.samsung.com>
From: Shuah Khan <shuahkh@osg.samsung.com>
Message-ID: <fc890351-ee10-e1da-57f1-e45ece939e9b@osg.samsung.com>
Date: Mon, 14 Nov 2016 09:45:54 -0700
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101
 Thunderbird/45.4.0
MIME-Version: 1.0
In-Reply-To: <5823AA6D.8060501@gmail.com>
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On 11/09/2016 03:59 PM, Sudip Mukherjee wrote:
> Hi Shuah
> 
> On Wednesday 09 November 2016 10:04 PM, Shuah Khan wrote:
>> Hi Sudip/Greg,
>>
>> I am seeing the following double free from pp_release() in Linux 4.9-rc4
>> Is this a known problem?
> 
> Can you please check if the patch at [1] fixes the problem.
> 
> [1] https://patchwork.kernel.org/patch/9404815/
> 
> 
> Regards
> Sudip
> 
> 

Hi Sudip,

Yes the above patch fixed the problem. I tested it on 4.9-rc5

thanks,
-- Shuah