Return-Path: Received: from mx0a-00082601.pphosted.com ([67.231.145.42]:63226 "EHLO mx0a-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754524AbbESOoz (ORCPT ); Tue, 19 May 2015 10:44:55 -0400 Message-ID: <555B4C4E.2020403@fb.com> Date: Tue, 19 May 2015 10:44:30 -0400 From: Chris Mason MIME-Version: 1.0 To: Piotr Szymaniak CC: Govindarajulu Varadarajan <_govind@gmx.com>, , , , , Subject: Re: btrfs: kernel BUG at mm/page-writeback.c:2286! References: <555B3DEE.1000900@fb.com> <20150519135416.GO2539@wloczykij> In-Reply-To: <20150519135416.GO2539@wloczykij> Content-Type: text/plain; charset="utf-8" Sender: linux-nfs-owner@vger.kernel.org List-ID: On 05/19/2015 09:54 AM, Piotr Szymaniak wrote: > On Tue, May 19, 2015 at 09:43:10AM -0400, Chris Mason wrote: >> On 05/19/2015 03:55 AM, Govindarajulu Varadarajan wrote: >>> 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? Josef and I just read through all of this, and I'm not finding a way to connect the crc error to the BUG_ON. Do all kernels crash like this, or was it just 4.1-rc? -chris