Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756090AbbESNn0 (ORCPT ); Tue, 19 May 2015 09:43:26 -0400 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:1265 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754476AbbESNnV (ORCPT ); Tue, 19 May 2015 09:43:21 -0400 Message-ID: <555B3DEE.1000900@fb.com> Date: Tue, 19 May 2015 09:43:10 -0400 From: Chris Mason 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" Content-Transfer-Encoding: 7bit X-Originating-IP: [192.168.54.13] 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: 1209 Lines: 37 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. > > Thanks > > mm/page-writeback.c:2286: > int clear_page_dirty_for_io(struct page *page) { > struct address_space *mapping = page_mapping(page); > > 2286--->BUG_ON(!PageLocked(page)); > > [ 166.769868] BTRFS info (device sdf): no csum found for inode 1154 > start 43192320 > [ 166.774334] BTRFS info (device sdf): csum failed ino 1154 extent > 4434247680 csum 1388825687 wanted 0 mirror 0 Josef and I both missed this the first time you pasted it, but the unlocked page is almost certainly related to this csum error. While we're looking at things can you please scrub? -chris -- 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/