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 S1753360AbdDJOKg (ORCPT <rfc822;w@1wt.eu>);
        Mon, 10 Apr 2017 10:10:36 -0400
Received: from szxga01-in.huawei.com ([45.249.212.187]:5319 "EHLO
        dggrg01-dlp.huawei.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org
        with ESMTP id S1752760AbdDJOKf (ORCPT
        <rfc822;linux-kernel@vger.kernel.org>);
        Mon, 10 Apr 2017 10:10:35 -0400
Message-ID: <58EB9183.2030806@huawei.com>
Date: Mon, 10 Apr 2017 22:06:59 +0800
From: zhong jiang <zhongjiang@huawei.com>
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20120428 Thunderbird/12.0.1
MIME-Version: 1.0
To: Michal Hocko <mhocko@kernel.org>
CC: Mel Gorman <mgorman@techsingularity.net>,
        Johannes Weiner <hannes@cmpxchg.org>, <vdavydov.dev@gmail.com>,
        Vlastimil Babka <vbabka@suse.cz>,
        Linux Memory Management List <linux-mm@kvack.org>,
        LKML <linux-kernel@vger.kernel.org>
Subject: Re: NULL pointer dereference in the kernel 3.10
References: <58E8E81E.6090304@huawei.com> <20170410085604.zpenj6ggc3dsbgxw@techsingularity.net> <58EB761E.9040002@huawei.com> <20170410124814.GC4618@dhcp22.suse.cz>
In-Reply-To: <20170410124814.GC4618@dhcp22.suse.cz>
Content-Type: text/plain; charset="ISO-8859-1"
Content-Transfer-Encoding: 7bit
X-Originating-IP: [10.177.29.68]
X-CFilter-Loop: Reflected
X-Mirapoint-Virus-RAPID-Raw: score=unknown(0),
        refid=str=0001.0A020206.58EB9194.0108,ss=1,re=0.000,recu=0.000,reip=0.000,cl=1,cld=1,fgs=0,
        ip=0.0.0.0,
        so=2014-11-16 11:51:01,
        dmn=2013-03-21 17:37:32
X-Mirapoint-Loop-Id: f71a8482e51a4bced812ad5fc79a857f
Sender: linux-kernel-owner@vger.kernel.org
List-ID: <linux-kernel.vger.kernel.org>
X-Mailing-List: linux-kernel@vger.kernel.org

On 2017/4/10 20:48, Michal Hocko wrote:
> On Mon 10-04-17 20:10:06, zhong jiang wrote:
>> On 2017/4/10 16:56, Mel Gorman wrote:
>>> On Sat, Apr 08, 2017 at 09:39:42PM +0800, zhong jiang wrote:
>>>> when runing the stabile docker cases in the vm.   The following issue will come up.
>>>>
>>>> #40 [ffff8801b57ffb30] async_page_fault at ffffffff8165c9f8
>>>>     [exception RIP: down_read_trylock+5]
>>>>     RIP: ffffffff810aca65  RSP: ffff8801b57ffbe8  RFLAGS: 00010202
>>>>     RAX: 0000000000000000  RBX: ffff88018ae858c1  RCX: 0000000000000000
>>>>     RDX: 0000000000000000  RSI: 0000000000000000  RDI: 0000000000000008
>>>>     RBP: ffff8801b57ffc10   R8: ffffea0006903de0   R9: ffff8800b3c61810
>>>>     R10: 00000000000022cb  R11: 0000000000000000  R12: ffff88018ae858c0
>>>>     R13: ffffea0006903dc0  R14: 0000000000000008  R15: ffffea0006903dc0
>>>>     ORIG_RAX: ffffffffffffffff  CS: 0010  SS: 0000
>>> Post the full report including the kernel version and state whether any
>>> additional patches to 3.10 are applied.
>>>
>>  Hi, Mel
>>    
>>         Our kernel from RHEL 7.2, Addtional patches all from upstream -- include Bugfix and CVE.
> I believe you should contact Redhat for the support. This is a) old
> kernel and b) with other patches which might or might not be relevant.
  Ok, regardless of the kernel version, we just discuss the situation in theory.  if commit
  624483f3ea8  ("mm: rmap: fix use-after-free in __put_anon_vma")  is not exist. the issue
 will trigger . Any thought.

Thanks
zhongjiang