From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756138AbZAAVIt (ORCPT ); Thu, 1 Jan 2009 16:08:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1750741AbZAAVIk (ORCPT ); Thu, 1 Jan 2009 16:08:40 -0500 Received: from verein.lst.de ([213.95.11.210]:54747 "EHLO verein.lst.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750733AbZAAVIk (ORCPT ); Thu, 1 Jan 2009 16:08:40 -0500 Date: Thu, 1 Jan 2009 22:08:31 +0100 From: Christoph Hellwig To: Jens Axboe Cc: linux-kernel@vger.kernel.org Subject: Re: oops in __bounce_end_io_read under kvm Message-ID: <20090101210831.GA20419@lst.de> References: <20081226173606.GA14933@lst.de> <20081228181057.GV32491@kernel.dk> <20081228181948.GA23568@lst.de> <20081228182459.GX32491@kernel.dk> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20081228182459.GX32491@kernel.dk> User-Agent: Mutt/1.3.28i X-Spam-Score: -0.001 () BAYES_44 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sun, Dec 28, 2008 at 07:25:00PM +0100, Jens Axboe wrote: > On Sun, Dec 28 2008, Christoph Hellwig wrote: > > On Sun, Dec 28, 2008 at 07:10:59PM +0100, Jens Axboe wrote: > > > Is this -rc9 stock + xfs patches, or does it include -mm or -next > > > patches (or the block patches)? > > > > Just -rc9 and xfs updates. The only change outside of fs/xfs/ is a new > > define in fs.h and a couple new helpers in inode.c > > OK, then it's surely a new bug. Could you do a gdb l *0xbla on that > address to check where it's faulting? It took a while to reproduce it again, but I got it again today. (gdb) l *0xc01a5444 0xc01a5444 is in __bounce_end_io_read (/home/hch/work/xfs/arch/x86/include/asm/string_32.h:35). 30 extern size_t strlen(const char *s); 31 32 static __always_inline void *__memcpy(void *to, const void *from, size_t n) 33 { 34 int d0, d1, d2; 35 asm volatile("rep ; movsl\n\t" 36 "movl %4,%%ecx\n\t" 37 "andl $3,%%ecx\n\t" 38 "jz 1f\n\t" 39 "rep ; movsb\n\t"