Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753542AbdHQTS3 (ORCPT ); Thu, 17 Aug 2017 15:18:29 -0400 Received: from mx0a-001b2d01.pphosted.com ([148.163.156.1]:34686 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753147AbdHQTS1 (ORCPT ); Thu, 17 Aug 2017 15:18:27 -0400 Subject: Re: WARNING: CPU: 15 PID: 0 at block/blk-mq.c:1111 __blk_mq_run_hw_queue+0x1d8/0x1f0 To: Bart Van Assche , "linuxppc-dev@lists.ozlabs.org" , "abdhalee@linux.vnet.ibm.com" Cc: "sachinp@linux.vnet.ibm.com" , "linux-kernel@vger.kernel.org" , "sfr@canb.auug.org.au" , "linux-block@vger.kernel.org" , "brking@us.ibm.com" , "axboe@kernel.dk" References: <1502906852.3305.33.camel@abdul.in.ibm.com> <1502907345.2421.8.camel@wdc.com> <4fe35be3-c631-e4ed-a135-110e536823bc@linux.vnet.ibm.com> <1502983941.2615.5.camel@wdc.com> From: Brian King Date: Thu, 17 Aug 2017 14:18:18 -0500 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.2.0 MIME-Version: 1.0 In-Reply-To: <1502983941.2615.5.camel@wdc.com> Content-Type: text/plain; charset=utf-8 Content-Language: en-US Content-Transfer-Encoding: 7bit X-TM-AS-GCONF: 00 x-cbid: 17081719-0052-0000-0000-000002516229 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00007562; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000222; SDB=6.00903749; UDB=6.00452762; IPR=6.00683961; BA=6.00005538; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00016744; XFM=3.00000015; UTC=2017-08-17 19:18:23 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17081719-0053-0000-0000-000051B487CB Message-Id: <072f9589-7489-ac6a-2899-0f12aed3e2fe@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-08-17_10:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 suspectscore=0 malwarescore=0 phishscore=0 adultscore=0 bulkscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1707230000 definitions=main-1708170310 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2787 Lines: 69 On 08/17/2017 10:32 AM, Bart Van Assche wrote: > On Wed, 2017-08-16 at 15:10 -0500, Brian King wrote: >> On 08/16/2017 01:15 PM, Bart Van Assche wrote: >>> On Wed, 2017-08-16 at 23:37 +0530, Abdul Haleem wrote: >>>> Linux-next booted with the below warnings on powerpc >>>> >>>> [ ... ] >>>> >>>> boot warnings: >>>> -------------- >>>> kvm: exiting hardware virtualization >>>> ------------[ cut here ]------------ >>>> WARNING: CPU: 15 PID: 0 at block/blk-mq.c:1111 __blk_mq_run_hw_queue >>>> +0x1d8/0x1f0 >>>> Modules linked in: iptable_mangle ipt_MASQUERADE nf_nat_masquerade_ipv4 >>>> Call Trace: >>>> [c000000ffff37990] [c00000000088f7b0] __blk_mq_delay_run_hw_queue >>>> +0x1f0/0x210 >>>> [c000000ffff379d0] [c00000000088fcb8] blk_mq_start_hw_queue+0x58/0x80 >>>> [c000000ffff379f0] [c00000000088fd40] blk_mq_start_hw_queues+0x60/0xb0 >>>> [c000000ffff37a30] [c000000000ae2b54] scsi_kick_queue+0x34/0xa0 >>>> [c000000ffff37a50] [c000000000ae2f70] scsi_run_queue+0x3b0/0x660 >>>> [c000000ffff37ac0] [c000000000ae7ed4] scsi_run_host_queues+0x64/0xc0 >>>> [c000000ffff37b00] [c000000000ae7f64] scsi_unblock_requests+0x34/0x60 >>>> [c000000ffff37b20] [c000000000b14998] ipr_ioa_bringdown_done+0xf8/0x3a0 >>>> [c000000ffff37bc0] [c000000000b12528] ipr_reset_ioa_job+0xd8/0x170 >>>> [c000000ffff37c00] [c000000000b18790] ipr_reset_timer_done+0x110/0x160 >>>> [c000000ffff37c50] [c00000000024db50] call_timer_fn+0xa0/0x3a0 >>>> [c000000ffff37ce0] [c00000000024e058] expire_timers+0x1b8/0x350 >>>> [c000000ffff37d50] [c00000000024e2f0] run_timer_softirq+0x100/0x3e0 >>>> [c000000ffff37df0] [c000000000162edc] __do_softirq+0x20c/0x620 >>>> [c000000ffff37ee0] [c000000000163a80] irq_exit+0x230/0x290 >>>> [c000000ffff37f10] [c00000000001d770] __do_irq+0x170/0x410 >>>> [c000000ffff37f90] [c00000000003ea20] call_do_irq+0x14/0x24 >>>> [c0000007f84e3a70] [c00000000001dae0] do_IRQ+0xd0/0x190 >>>> [c0000007f84e3ac0] [c000000000008c58] hardware_interrupt_common >>>> +0x158/0x160 >>> >>> Hello Brian, >>> >>> In the MAINTAINERS file I found the following: >>> >>> IBM Power Linux RAID adapter >>> M: Brian King >>> S: Supported >>> F: drivers/scsi/ipr.* >>> >>> Is that information up-to-date? Do you agree that the above message indicates >>> a bug in the ipr driver? >> >> Yes. Can you try with this patch that is in 4.13/scsi-fixes: >> >> https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git/commit/?h=4.13/scsi-fixes&id=b0e17a9b0df29590c45dfb296f541270a5941f41 > > Hello Brian, > > Sorry but I don't have access to a setup on which I can test the ipr driver ... Understood. That request was intended for Abdul, who reported the issue. I should have just cc'ed you... Thanks, Brian -- Brian King Power Linux I/O IBM Linux Technology Center