From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754757AbdEHOAs (ORCPT ); Mon, 8 May 2017 10:00:48 -0400 Received: from mail-it0-f44.google.com ([209.85.214.44]:36363 "EHLO mail-it0-f44.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754614AbdEHOAp (ORCPT ); Mon, 8 May 2017 10:00:45 -0400 Subject: Re: [linux-next][bock] WARNING: CPU: 22 PID: 0 at block/blk-core.c:2655 .blk_update_request+0x4f8/0x500 To: Abdul Haleem References: <1493965539.7355.44.camel@abdul.in.ibm.com> <15a0a50a-d57d-736b-634c-4d0131ec5af3@kernel.dk> <1494227599.2983.2.camel@abdul.in.ibm.com> Cc: linux-block , sachinp , Stephen Rothwell , linuxppc-dev , linux-kernel , "Martin K. Petersen" , Christoph Hellwig From: Jens Axboe Message-ID: Date: Mon, 8 May 2017 08:00:41 -0600 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:45.0) Gecko/20100101 Thunderbird/45.8.0 MIME-Version: 1.0 In-Reply-To: <1494227599.2983.2.camel@abdul.in.ibm.com> Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 05/08/2017 01:13 AM, Abdul Haleem wrote: > On Fri, 2017-05-05 at 08:02 -0600, Jens Axboe wrote: >> On 05/05/2017 12:25 AM, Abdul Haleem wrote: >>> Hi, >>> >>> 4.11.0 Linus mainline booted with Warnings on PowerPC. >>> >>> We did not see this on next-20170407 but on next-20170410 and later. >> >> Have you tried current Linus -git? Both of the -next versions you list >> are rather old. >> > > Hi Jens, > > Warning is still seen with next-20170505 and also with today's mainline. > > It was first seen on next-20170410, so the last good was next-20170407. The log between the known good and first bad version, condensed a bit for primary suspects, is below. Christoph Hellwig (4): sd: split sd_setup_discard_cmnd sd: implement REQ_OP_WRITE_ZEROES sd: implement unmapping Write Zeroes block: remove the discard_zeroes_data flag Martin K. Petersen (2): scsi: sd: Separate zeroout and discard command choices scsi: sd: Remove LBPRZ dependency for discards Christoph Hellwig (7): block: implement splitting of REQ_OP_WRITE_ZEROES bios block: stop using blkdev_issue_write_same for zeroing block: add a flags argument to (__)blkdev_issue_zeroout block: add a REQ_NOUNMAP flag for REQ_OP_WRITE_ZEROES block: add a new BLKDEV_ZERO_NOFALLBACK flag block: stop using discards for zeroing block: remove the discard_zeroes_data flag Christoph, Martin - any ideas? Trace from Abdul below. WARNING: CPU: 12 PID: 0 at block/blk-core.c:2651 .blk_update_request+0x4cc/0x4e0 Modules linked in: sg(E) nfsd(E) auth_rpcgss(E) nfs_acl(E) lockd(E) grace(E) sunrpc(E) binfmt_misc(E) ip_tables(E) ext4(E) mbcache(E) jbd2(E) sd_mod(E) ibmvscsi(E) scsi_transport_srp(E) ibmveth(E) CPU: 12 PID: 0 Comm: swapper/12 Tainted: G E 4.11.0-autotest #1 task: c0000009f455ee80 task.stack: c0000009fb2e8000 NIP: c00000000050bd1c LR: c00000000050b8ec CTR: c0000000005114b0 REGS: c0000013fff73740 TRAP: 0700 Tainted: G E (4.11.0-autotest) MSR: 8000000000029032 CR: 48042048 XER: 00000001 CFAR: c00000000050bb34 SOFTE: 1 GPR00: c00000000050b8ec c0000013fff739c0 c000000001389c00 c0000009eca9c800 GPR04: 0000000000000000 0000000000000000 0000000000000001 0000000000000060 GPR08: 0000000000067887 0000000000000000 c0000009eca9c800 d00000000e5f7e30 GPR12: 0000000088044044 c00000000e9f6c00 c0000009fb2ebf90 0000000000200042 GPR16: 00000000ffff9367 c0000013fff70000 0000000000000000 c000000000df4100 GPR20: c0000000013c3b00 c000000000df4100 0000000000000000 0000000000000005 GPR24: 0000000000002ee0 c0000000017789f8 0000000000000000 0000000000000000 GPR28: 0000000000000000 c0000000038ba400 0000000000000000 c0000009eca9c800 NIP [c00000000050bd1c] .blk_update_request+0x4cc/0x4e0 LR [c00000000050b8ec] .blk_update_request+0x9c/0x4e0 Call Trace: [c0000013fff739c0] [c00000000050b8ec] .blk_update_request+0x9c/0x4e0 (unreliable) [c0000013fff73a60] [c0000000006b06fc] .scsi_end_request+0x4c/0x240 [c0000013fff73b10] [c0000000006b4564] .scsi_io_completion+0x1d4/0x6c0 [c0000013fff73be0] [c0000000006a8cd0] .scsi_finish_command+0x100/0x1b0 [c0000013fff73c70] [c0000000006b3978] .scsi_softirq_done+0x188/0x1e0 [c0000013fff73d00] [c000000000516b44] .blk_done_softirq+0xc4/0xf0 [c0000013fff73d90] [c0000000000daef8] .__do_softirq+0x158/0x3b0 [c0000013fff73e90] [c0000000000db5b8] .irq_exit+0x1a8/0x1c0 [c0000013fff73f10] [c000000000014f84] .__do_irq+0x94/0x1f0 [c0000013fff73f90] [c000000000026cbc] .call_do_irq+0x14/0x24 [c0000009fb2eb7f0] [c00000000001516c] .do_IRQ+0x8c/0x100 [c0000009fb2eb890] [c000000000008bf4] hardware_interrupt_common+0x114/0x120 --- interrupt: 501 at .plpar_hcall_norets+0x14/0x20 LR = .check_and_cede_processor+0x24/0x40 [c0000009fb2ebb80] [0000000000000002] 0x2 (unreliable) [c0000009fb2ebbf0] [c0000000007c360c] .dedicated_cede_loop+0x4c/0x150 [c0000009fb2ebc70] [c0000000007c1040] .cpuidle_enter_state+0xb0/0x3b0 [c0000009fb2ebd20] [c00000000012d1bc] .call_cpuidle+0x3c/0x70 [c0000009fb2ebd90] [c00000000012d550] .do_idle+0x280/0x2e0 [c0000009fb2ebe50] [c00000000012d768] .cpu_startup_entry+0x28/0x40 [c0000009fb2ebed0] [c0000000000428a4] .start_secondary+0x304/0x350 [c0000009fb2ebf90] [c00000000000aa6c] start_secondary_prolog+0x10/0x14 Instruction dump: 3f82ff90 3b9cc190 4bfffd8c 3f82ff90 3b9cc1a8 4bfffd80 61290040 b13f0018 4bfffbd4 3cc2ff8b 38c63160 4bfffd9c <0fe00000> 4bfffe18 60000000 60000000 ---[ end trace 0f80359f8fb9c5f4 ]--- EXT4-fs (sda3): Delayed block allocation failed for inode 11011467 at logical offset 0 with max blocks 7 with error 121 EXT4-fs (sda3): This should not happen!! Data will be lost -- Jens Axboe