Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751502AbdF0EQV (ORCPT ); Tue, 27 Jun 2017 00:16:21 -0400 Received: from mail-pf0-f180.google.com ([209.85.192.180]:36654 "EHLO mail-pf0-f180.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750850AbdF0EQN (ORCPT ); Tue, 27 Jun 2017 00:16:13 -0400 Subject: Re: [block] 044f1daaaa kernel BUG at block/blk-mq.c:415! To: Fengguang Wu Cc: Linus Torvalds , LKML , linux-block@vger.kernel.org, LKP References: <20170627035301.j4slju6w4hah76tt@wfg-t540p.sh.intel.com> From: Jens Axboe Message-ID: <4eea705d-fa46-8ae5-a5bc-d47384a75d2e@kernel.dk> Date: Mon, 26 Jun 2017 22:16:09 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.1.1 MIME-Version: 1.0 In-Reply-To: <20170627035301.j4slju6w4hah76tt@wfg-t540p.sh.intel.com> Content-Type: text/plain; charset=windows-1252 Content-Language: en-US Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 956 Lines: 26 On 06/26/2017 09:53 PM, Fengguang Wu wrote: > Greetings, > > Sorry the report is a bit late, this bug looks still active: > First I've heard about it! > [ 36.037364] sector 2, nr/cnr 0/2 > [ 36.037367] bio ffff88001af84e80, biotail ffff88001af84e80, len 0 > [ 36.037367] bio ffff88001af84e80, biotail ffff88001af84e80, len 0 > [ 36.037424] ------------[ cut here ]------------ > [ 36.037424] ------------[ cut here ]------------ > [ 36.037428] kernel BUG at block/blk-mq.c:415! > [ 36.037428] kernel BUG at block/blk-mq.c:415! > [ 36.037433] invalid opcode: 0000 [#1] PREEMPT SMP > [ 36.037433] invalid opcode: 0000 [#1] PREEMPT SMP > [ 36.037434] Modules linked in: > [ 36.037434] Modules linked in: Do you have the full dmesg of this? I looked at the one attached to the bug report, but that's a completely different bug (NULL deref in drm). Are you sure it's still the above blk-mq BUG() we're hitting? -- Jens Axboe