From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi0-f72.google.com (mail-oi0-f72.google.com [209.85.218.72]) by kanga.kvack.org (Postfix) with ESMTP id 925376B039F for ; Mon, 10 Apr 2017 10:10:30 -0400 (EDT) Received: by mail-oi0-f72.google.com with SMTP id n7so109082013oif.9 for ; Mon, 10 Apr 2017 07:10:30 -0700 (PDT) Received: from dggrg01-dlp.huawei.com (szxga01-in.huawei.com. [45.249.212.187]) by mx.google.com with ESMTPS id y62si6471856oig.20.2017.04.10.07.10.28 for (version=TLS1 cipher=AES128-SHA bits=128/128); Mon, 10 Apr 2017 07:10:29 -0700 (PDT) Message-ID: <58EB9183.2030806@huawei.com> Date: Mon, 10 Apr 2017 22:06:59 +0800 From: zhong jiang MIME-Version: 1.0 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 Sender: owner-linux-mm@kvack.org List-ID: To: Michal Hocko Cc: Mel Gorman , Johannes Weiner , vdavydov.dev@gmail.com, Vlastimil Babka , Linux Memory Management List , LKML 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 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org