From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932804AbcKGRS0 (ORCPT ); Mon, 7 Nov 2016 12:18:26 -0500 Received: from mail-qk0-f178.google.com ([209.85.220.178]:35308 "EHLO mail-qk0-f178.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932778AbcKGRSX (ORCPT ); Mon, 7 Nov 2016 12:18:23 -0500 Subject: Re: CISS driver error introduced with kernel-4.9.0-0.rc2.git1.1.fc26 To: Johnny Bieren , don.brace@microsemi.com References: <58207715.9000403@redhat.com> Cc: iss_storagedev@hp.com, esc.storagedev@microsemi.com, linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org From: Laura Abbott Message-ID: <7bbbf5e8-2a29-0673-8116-181c9b8df26a@redhat.com> Date: Mon, 7 Nov 2016 09:18:18 -0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.4.0 MIME-Version: 1.0 In-Reply-To: <58207715.9000403@redhat.com> Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 11/07/2016 04:44 AM, Johnny Bieren wrote: > Hello, > > It appears that a check_unmap kernel failure for the CISS driver was introduced with kernel-4.9.0-0.rc2.git1.1.fc26. When booting this kernel, or any newer kernel, I see the following: > > [ 3.676658] HP CISS Driver (v 3.6.26) > 0m] Reached target System Initialization. > Starting dracut initqueue hook... > Starting Show Plymouth Boot Screen... > [ 3.756592] scsi host0: pata_amd > [ 3.772866] scsi host1: pata_amd > [ 3.782052] ata1: PATA max UDMA/133 cmd 0x1f0 ctl 0x3f6 bmdma 0x2000 irq 14 > [ 3.789616] ata2: PATA max UDMA/133 cmd 0x170 ctl 0x376 bmdma 0x2008 irq 15 > [ 3.825789] cciss 0000:02:04.0: cciss0: <0x46> at PCI 0000:02:04.0 IRQ 24 using DAC > [ 3.836530] audit: type=1130 audit(1478270493.962:10): pid=1 uid=0 auid=4294967295 ses=4294967295 subj=kernel msg='unit=plymouth-start comm="systemd" exe="/usr/lib/systemd/systemd" hostname=? addr=? terminal=? res=success' > [ > OK > ] Started Show[ 3.839544] ------------[ cut here ]------------ > Plymouth Boot S[ 3.839555] WARNING: CPU: 0 PID: 193 at lib/dma-debug.c:1164 check_unmap+0x4af/0x940 > creen. > [ 3.839559] cciss 0000:02:04.0: DMA-API: device driver failed to check map error[device address=0x0000000038f521c0] [size=36 bytes] [mapped as single] > [ 3.839563] Modules linked in: serio_raw cciss(+) pata_amd > [ 3.839566] CPU: 0 PID: 193 Comm: kworker/0:2 Not tainted 4.9.0-0.rc2.git1.1.fc26.x86_64 #1 > [ 3.839567] Hardware name: HP ProLiant DL385 G1, BIOS A05 03/01/2006 > [ 3.839573] Workqueue: events work_for_cpu_fn > [ 3.839577] ffff9e9ec05938f8 ffffffff8546cd23 ffff9e9ec0593948 0000000000000000 > [ 3.839579] ffff9e9ec0593938 ffffffff850af4cb 0000048c00000082 ffff8aa07ca0ea60 > [ 3.839582] ffffffff87483a00 ffff8aa07b878180 0000000000000282 ffffffff85c5ad66 > [ 3.839582] Call Trace: > [ 3.839588] [] dump_stack+0x86/0xc3 > [ 3.839591] [] __warn+0xcb/0xf0 > [ 3.839593] [] warn_slowpath_fmt+0x5f/0x80 > [ 3.839595] [] check_unmap+0x4af/0x940 > [ 3.839597] [] debug_dma_unmap_page+0x79/0xa0 > [ 3.839613] [] sendcmd_withirq_core+0x217/0x260 [cciss] > [ 3.839618] [] ? wait_for_completion+0x110/0x140 > [ 3.839623] [] sendcmd_withirq+0x98/0xb0 [cciss] > [ 3.839628] [] cciss_init_one+0x1a8f/0x1f70 [cciss] > [ 3.839632] [] local_pci_probe+0x45/0xa0 > [ 3.839634] [] work_for_cpu_fn+0x14/0x20 > [ 3.839637] [] process_one_work+0x23e/0x6f0 > [ 3.839638] [] ? process_one_work+0x1ba/0x6f0 > [ 3.839641] [] worker_thread+0x1d3/0x490 > [ 3.839642] [] ? process_one_work+0x6f0/0x6f0 > [ 3.839644] [] ? process_one_work+0x6f0/0x6f0 > [ 3.839648] [] kthread+0x102/0x120 > [ 3.839652] [] ? trace_hardirqs_on_caller+0xf5/0x1b0 > [ 3.839655] [] ? kthread_park+0x60/0x60 > [ 3.839658] [] ret_from_fork+0x2a/0x40 > [ 3.839659] ---[ end trace 1ec289ff52b16fd7 ]--- > [ 3.839660] Mapped at: > [ 3.839663] > [ 3.839663] [] debug_dma_map_page+0x8c/0x160 > [ 3.839668] > [ 3.839668] [] fill_cmd+0x1bf/0x420 [cciss] > [ 3.839672] > [ 3.839672] [] sendcmd_withirq+0x64/0xb0 [cciss] > [ 3.839676] > [ 3.839676] [] cciss_init_one+0x1a8f/0x1f70 [cciss] > [ 3.839679] > [ 3.839679] [] local_pci_probe+0x45/0xa0 > [ 3.859535] scsi host2: cciss > > This problem does not appear when booting with kernel-4.9.0-0.rc2.git0.1.fc26. It reproduces 100% of the time, simply try to boot kernel-4.9.0-0.rc2.git1.1.fc26 on a host with a CISS disk. > > Thank you, > Johnny For reference, the corresponding upstream commits for the Fedora tags are 6edc51a8d43b0bb8263fefaa8eb0cf62e8499978 and 9fe68cad6e74967b88d0c6aeca7d9cd6b6e91942 although I think those two tags may be a misdirection because kernel-4.9.0-0.rc2.git0.1.fc26 had DMA_API_DEBUG turned off. Thanks, Laura