From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io0-f200.google.com (mail-io0-f200.google.com [209.85.223.200]) by kanga.kvack.org (Postfix) with ESMTP id 9A2CA6B03A1 for ; Mon, 10 Apr 2017 10:15:14 -0400 (EDT) Received: by mail-io0-f200.google.com with SMTP id y22so67269768ioe.9 for ; Mon, 10 Apr 2017 07:15:14 -0700 (PDT) Received: from dggrg01-dlp.huawei.com (szxga01-in.huawei.com. [45.249.212.187]) by mx.google.com with ESMTPS id g204si14384365ioe.207.2017.04.10.07.15.12 for (version=TLS1 cipher=AES128-SHA bits=128/128); Mon, 10 Apr 2017 07:15:13 -0700 (PDT) Message-ID: <58EB92A0.2090509@huawei.com> Date: Mon, 10 Apr 2017 22:11:44 +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> <20170410140646.hyfbzc5367442hty@techsingularity.net> In-Reply-To: <20170410140646.hyfbzc5367442hty@techsingularity.net> Content-Type: text/plain; charset="ISO-8859-15" Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Mel Gorman Cc: Michal Hocko , Johannes Weiner , vdavydov.dev@gmail.com, Vlastimil Babka , Linux Memory Management List , LKML On 2017/4/10 22:06, Mel Gorman wrote: > On Mon, Apr 10, 2017 at 08:10:06PM +0800, 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. >> >> Commit 624483f3ea8 ("mm: rmap: fix use-after-free in __put_anon_vma") exclude in >> the RHEL 7.2. it looks seems to the issue. but I don't know how it triggered. >> or it is not the correct fix. Any suggestion? Thanks >> > I'm afraid you'll need to bring it up with RHEL support as it contains > a number of backported patches from them that cannot be meaningfully > evaluated outside of RedHat and they may have additional questions on the > patches applied on top. > Thanks -- 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