Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934080Ab1CXT5t (ORCPT ); Thu, 24 Mar 2011 15:57:49 -0400 Received: from mx1.fusionio.com ([64.244.102.30]:36357 "EHLO mx1.fusionio.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933832Ab1CXT5q (ORCPT ); Thu, 24 Mar 2011 15:57:46 -0400 X-ASG-Debug-ID: 1300996665-03d6a54f61d3640001-xx1T2L X-Barracuda-Envelope-From: JAxboe@fusionio.com Message-ID: <4D8BA235.7060904@fusionio.com> Date: Thu, 24 Mar 2011 20:57:41 +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> <4D8B9457.2020608@fusionio.com> <20110324193441.GA1723@gentoo.trippels.de> <4D8B9D2F.4010504@fusionio.com> <20110324194546.GA1741@gentoo.trippels.de> X-ASG-Orig-Subj: Re: [GIT PULL] Core block IO bits for 2.6.39 - early Oops In-Reply-To: <20110324194546.GA1741@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: 1300996665 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 3.2.2.58859 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: 1869 Lines: 53 On 2011-03-24 20:45, Markus Trippelsdorf wrote: > On 2011.03.24 at 20:36 +0100, Jens Axboe wrote: >> On 2011-03-24 20:34, Markus Trippelsdorf wrote: >>> On 2011.03.24 at 19:58 +0100, Jens Axboe wrote: >>>> 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? >>> >>> There's no patch ;-) >> >> Oh, here it is. >> > It doesn't help, unfortunately. I still get the same BUG at > cfq_insert_request+0x32/0x4d0. OK, still a data point. What was the last -git kernel you used? -- 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/