Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933682Ab1CXS6q (ORCPT ); Thu, 24 Mar 2011 14:58:46 -0400 Received: from mx1.fusionio.com ([64.244.102.30]:38071 "EHLO mx1.fusionio.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757088Ab1CXS6g (ORCPT ); Thu, 24 Mar 2011 14:58:36 -0400 X-ASG-Debug-ID: 1300993115-03d6a54f62d27c0001-xx1T2L X-Barracuda-Envelope-From: JAxboe@fusionio.com Message-ID: <4D8B9457.2020608@fusionio.com> Date: Thu, 24 Mar 2011 19:58:31 +0100 From: Jens Axboe MIME-Version: 1.0 To: Markus Trippelsdorf CC: Linus Torvalds , "linux-kernel@vger.kernel.org" , Chris Mason Subject: Re: [GIT PULL] Core block IO bits for 2.6.39 - early Oops References: <4D8B4A89.80608@fusionio.com> <20110324183019.GA1676@gentoo.trippels.de> <4D8B8F34.5000203@fusionio.com> <4D8B92AE.8090308@fusionio.com> <20110324185445.GB1696@gentoo.trippels.de> X-ASG-Orig-Subj: Re: [GIT PULL] Core block IO bits for 2.6.39 - early Oops In-Reply-To: <20110324185445.GB1696@gentoo.trippels.de> Content-Type: text/plain; charset="ISO-8859-1" Content-Transfer-Encoding: 7bit X-Barracuda-Connect: mail1.int.fusionio.com[10.101.1.21] X-Barracuda-Start-Time: 1300993115 X-Barracuda-URL: http://10.101.1.180:8000/cgi-mod/mark.cgi X-Barracuda-Spam-Score: 0.00 X-Barracuda-Spam-Status: No, SCORE=0.00 using per-user scores of TAG_LEVEL=1000.0 QUARANTINE_LEVEL=1000.0 KILL_LEVEL=9.0 tests= X-Barracuda-Spam-Report: Code version 3.2, rules version 3.2.2.58855 Rule breakdown below pts rule name description ---- ---------------------- -------------------------------------------------- Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1403 Lines: 43 On 2011-03-24 19:54, Markus Trippelsdorf wrote: > On 2011.03.24 at 19:51 +0100, Jens Axboe wrote: >> On 2011-03-24 19:36, Jens Axboe wrote: >>> On 2011-03-24 19:30, Markus Trippelsdorf wrote: >>>> On 2011.03.24 at 14:43 +0100, Jens Axboe wrote: >>>>> >>>>> This is the main pull request for the block IO layer and friends for >>>>> 2.6.39. >>>> >>>> This merge results in an early oops on my system (amd64, xfs). >>>> See the attached photo. >>>> >>> >>> Auch. Can you ensure that you have CONFIG_DEBUGINFO=y in your .config >>> and then do: >>> >>> $ gdb vmlinux >>> ... >>> l *cfq_insert_request+0x32 >>> >>> and send that output? >> >> I took a closer look at the oops, and it most likely looks like q == >> NULL (offset 0x18 == q->elevator). You left out the Code part, so I >> can't verify that for certain. Which makes very little sense. I take it >> this is 100% reproducible? When you send the gdb output, please also >> attach your .config. > > Yes, it's 100% reproducible here. My .config follows: Can you try this patch and see if it makes a difference? If you boot without the patch and add elevator=noop, does it then work? -- Jens Axboe -- 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/