Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752270AbdHPUKq (ORCPT ); Wed, 16 Aug 2017 16:10:46 -0400 Received: from mx0b-001b2d01.pphosted.com ([148.163.158.5]:59514 "EHLO mx0a-001b2d01.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751678AbdHPUKo (ORCPT ); Wed, 16 Aug 2017 16:10:44 -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" , "linux-block@vger.kernel.org" , "brking@us.ibm.com" , "sfr@canb.auug.org.au" , "axboe@kernel.dk" References: <1502906852.3305.33.camel@abdul.in.ibm.com> <1502907345.2421.8.camel@wdc.com> From: Brian King Date: Wed, 16 Aug 2017 15:10:39 -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: <1502907345.2421.8.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: 17081620-0048-0000-0000-000001D49D02 X-IBM-SpamModules-Scores: X-IBM-SpamModules-Versions: BY=3.00007556; HX=3.00000241; KW=3.00000007; PH=3.00000004; SC=3.00000221; SDB=6.00903287; UDB=6.00452484; IPR=6.00683503; BA=6.00005537; NDR=6.00000001; ZLA=6.00000005; ZF=6.00000009; ZB=6.00000000; ZP=6.00000000; ZH=6.00000000; ZU=6.00000002; MB=3.00016725; XFM=3.00000015; UTC=2017-08-16 20:10:42 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 17081620-0049-0000-0000-000042418D59 Message-Id: <4fe35be3-c631-e4ed-a135-110e536823bc@linux.vnet.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10432:,, definitions=2017-08-16_08:,, 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-1708160332 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2375 Lines: 60 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 Thanks, Brian -- Brian King Power Linux I/O IBM Linux Technology Center