Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755869AbbESNc3 (ORCPT ); Tue, 19 May 2015 09:32:29 -0400 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:61797 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753623AbbESNc1 (ORCPT ); Tue, 19 May 2015 09:32:27 -0400 Message-ID: <555B3B5D.7040601@fb.com> Date: Tue, 19 May 2015 09:32:13 -0400 From: Josef Bacik User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Thunderbird/31.6.0 MIME-Version: 1.0 To: Govindarajulu Varadarajan <_govind@gmx.com>, , , CC: , Subject: Re: btrfs: kernel BUG at mm/page-writeback.c:2286! References: In-Reply-To: Content-Type: text/plain; charset="windows-1252"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [192.168.52.13] X-Proofpoint-Spam-Reason: safe X-FB-Internal: Safe X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.14.151,1.0.33,0.0.0000 definitions=2015-05-19_04:2015-05-19,2015-05-19,1970-01-01 signatures=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1081 Lines: 27 On 05/19/2015 03:55 AM, Govindarajulu Varadarajan wrote: > Hi all > > I am seeing the following crash on my btrfs filesystem with nfs export. > If I disable the nfs share and reboot, I do not hit the crash. Look like > the crash happens on btrfs with nfs export. > > Is this a known issue? Has anyone else faced this? Let me know if you > need more > information. > Somebody else is unlocking the page while we have it locked (by somebody else I mean somebody other than in this particular code path, so could totally still be us, it's just not obvious.) What are your mount options? Are you capable of building your own kernel? A git bisect would be good to try and find where the problem was introduced, seems like it's easy to reproduce. I'll look through our recent commits and see if anything pops out. Thanks, Josef -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/