From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965435AbaDJDw4 (ORCPT ); Wed, 9 Apr 2014 23:52:56 -0400 Received: from mx0b-00082601.pphosted.com ([67.231.153.30]:31058 "EHLO mx0b-00082601.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965162AbaDJDwx (ORCPT ); Wed, 9 Apr 2014 23:52:53 -0400 Message-ID: <5346158B.90005@fb.com> Date: Wed, 9 Apr 2014 21:52:43 -0600 From: Jens Axboe User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.4.0 MIME-Version: 1.0 To: Benjamin Herrenschmidt CC: Jan Kara , Linux Kernel Mailing List , Frederic Weisbecker , James Bottomley , Brian J King Subject: Re: [BUG] kernel BUG at /.../block/cfq-iosched.c:3145! References: <1397018647.3671.123.camel@pasglop> <53454CBC.9060905@fb.com> <1397087273.3671.150.camel@pasglop> <1397088144.3671.155.camel@pasglop> <5345F476.2000602@fb.com> <1397093815.3671.156.camel@pasglop> <5346012A.50901@fb.com> <1397100937.3671.160.camel@pasglop> In-Reply-To: <1397100937.3671.160.camel@pasglop> Content-Type: text/plain; charset="UTF-8"; format=flowed Content-Transfer-Encoding: 7bit X-Originating-IP: [192.168.57.29] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:5.11.96,1.0.14,0.0.0000 definitions=2014-04-09_05:2014-04-09,2014-04-09,1970-01-01 signatures=0 X-Proofpoint-Spam-Details: rule=fb_default_notspam policy=fb_default score=0 kscore.is_bulkscore=7.04991620636974e-15 kscore.compositescore=0 circleOfTrustscore=5.8201264735473 compositescore=0.307752384302029 urlsuspect_oldscore=0.307752384302029 suspectscore=0 recipient_domain_to_sender_totalscore=0 phishscore=0 bulkscore=0 kscore.is_spamscore=0 recipient_to_sender_totalscore=0 recipient_domain_to_sender_domain_totalscore=2524143 rbsscore=0.307752384302029 spamscore=0 recipient_to_sender_domain_totalscore=16 urlsuspectscore=0.9 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=7.0.1-1402240000 definitions=main-1404100060 X-FB-Internal: deliver Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 2014-04-09 21:35, Benjamin Herrenschmidt wrote: > On Wed, 2014-04-09 at 20:25 -0600, Jens Axboe wrote: >> On 2014-04-09 19:36, Benjamin Herrenschmidt wrote: >>> On Wed, 2014-04-09 at 19:31 -0600, Jens Axboe wrote: >>>> OK, I think we're seeing different symptoms of the same bug. Stay >>>> tuned, will have something for you to test shortly, I hope. >>> >>> Ah thanks. I'll defer the bisection then (it's painful on that machine >>> for various reasons....) >> >> Can you try with these two patches applied? > > Booted to login prompt once ... and twice. Much better ! :-) Excellent! I was hoping it was the same bug :-) I'll amend the commit and add your tested-by. > Not sure if it's related, but in the "good" boots (with the patch), > I see a truckload of: > > systemd-udevd[3264]: starting version 204 > sr 2:6:0:0: [sr0] > Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE > sr 2:6:0:0: [sr0] > Sense Key : Illegal Request [current] > sr 2:6:0:0: [sr0] > Add. Sense: Logical block address out of range > sr 2:6:0:0: [sr0] CDB: > Read(10): 28 00 00 00 00 00 00 00 01 00 > end_request: critical target error, dev sr0, sector 0 > Buffer I/O error on device sr0, logical block 0 > [ OK ] Started udev Kernel Device Manager. > sr 2:6:0:0: [sr0] > Result: hostbyte=DID_OK driverbyte=DRIVER_SENSE > sr 2:6:0:0: [sr0] > Sense Key : Illegal Request [current] > sr 2:6:0:0: [sr0] > Add. Sense: Logical block address out of range > sr 2:6:0:0: [sr0] CDB: > > etc... > > I might have a crap coaster in that drive. It doesn't prevent > the machine from working otherwise, so far... That does look like just a dud cdrom in the tray. -- Jens Axboe