From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752620AbaBJPcU (ORCPT ); Mon, 10 Feb 2014 10:32:20 -0500 Received: from e9.ny.us.ibm.com ([32.97.182.139]:36202 "EHLO e9.ny.us.ibm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751791AbaBJPcS (ORCPT ); Mon, 10 Feb 2014 10:32:18 -0500 Message-ID: <52F8F0FB.3080206@linux.vnet.ibm.com> Date: Mon, 10 Feb 2014 10:32:11 -0500 From: "Jason J. Herne" Reply-To: jjherne@linux.vnet.ibm.com Organization: IBM User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.2.0 MIME-Version: 1.0 To: Tejun Heo CC: linux-kernel@vger.kernel.org, Lai Jiangshan Subject: Re: Subject: Warning in workqueue.c References: <52F4F01C.1070800@linux.vnet.ibm.com> <20140207165113.GD3304@htj.dyndns.org> <52F51E10.8050208@linux.vnet.ibm.com> <20140207193604.GA8833@htj.dyndns.org> In-Reply-To: <20140207193604.GA8833@htj.dyndns.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-TM-AS-MML: disable X-Content-Scanned: Fidelis XPS MAILER x-cbid: 14021015-7182-0000-0000-000009CC00F2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/07/2014 02:36 PM, Tejun Heo wrote: > Hello, > > On Fri, Feb 07, 2014 at 12:55:28PM -0500, Jason J. Herne wrote: >> [ 644.517710] XXX: worker->flags=0x1 pool->flags=0x0 cpu=6 pool->cpu=4 >> [ 731.367023] XXX: worker->flags=0x1 pool->flags=0x0 cpu=1 pool->cpu=7 > > Sorry, still no idea how this can happen. Can you please try the > following? > Here are the results: [ 950.778326] ------------[ cut here ]------------ [ 950.778334] WARNING: at kernel/workqueue.c:2156 [ 950.778336] Modules linked in: ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat nf_conntrack_ipv4 nf_defrag_ipv4 xt_conntrack nf_conntrack xt_CHECKSUM iptable_mangle bridge stp llc ip6table_filter ip6_tables ebtable_nat ebtables iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi tape_3590 tape tape_class qeth_l2 vhost_net tun vhost macvtap macvlan lcs dasd_eckd_mod dasd_mod qeth ccwgroup zfcp scsi_transport_fc scsi_tgt qdio dm_multipath [last unloaded: kvm] [ 950.778370] CPU: 6 PID: 16 Comm: kworker/2:0 Not tainted 3.14.0-rc1 #1 [ 950.778375] task: 00000000f7cc4b90 ti: 00000000f7ce8000 task.ti: 00000000f7ce8000 [ 950.778385] Krnl PSW : 0404c00180000000 000000000015b386 (process_one_work+0x59a/0x5c0) [ 950.778389] R:0 T:1 IO:0 EX:0 Key:0 M:1 W:0 P:0 AS:3 CC:0 PM:0 EA:3 Krnl GPRS: 00000000001ee417 00000000f7f0ce00 0000000000bc2a52 0000000000000001 [ 950.778396] 0000000000000000 0000000000000006 0000000000000002 0000000000bc2a4e [ 950.778400] 0000000000000000 0000000084a1f500 0000000084a1b000 0000000084a1b018 [ 950.778404] 00000000f7f52900 0000000000b92500 00000000f7cebdd0 00000000f7cebd68 [ 950.778423] Krnl Code: 000000000015b37a: 92013000 mvi 0(%r3),1 000000000015b37e: a7f4ff31 brc 15,15b1e0 #000000000015b382: a7f40001 brc 15,15b384 >000000000015b386: 92012000 mvi 0(%r2),1 000000000015b38a: a7f4feae brc 15,15b0e6 000000000015b38e: 41102018 la %r1,24(%r2) 000000000015b392: e31020180020 cg %r1,24(%r2) 000000000015b398: a784ff59 brc 8,15b24a [ 950.778451] Call Trace: [ 950.778455] ([<000000000015b0b4>] process_one_work+0x2c8/0x5c0) [ 950.778459] [<000000000015b98e>] worker_thread+0x19a/0x3c0 [ 950.778463] [<00000000001647c2>] kthread+0x10e/0x128 [ 950.778469] [<0000000000728dd6>] kernel_thread_starter+0x6/0xc [ 950.778472] [<0000000000728dd0>] kernel_thread_starter+0x0/0xc [ 950.778475] Last Breaking-Event-Address: [ 950.778478] [<000000000015b382>] process_one_work+0x596/0x5c0 [ 950.778481] ---[ end trace 643b2850ca4b7ed8 ]--- [ 950.778485] XXX: worker->flags=0x1 pool->flags=0x0 cpu=6 pool->cpu=2 rescue_wq= (null) [ 950.778488] XXX: last_unbind=-7 last_rebind=0 last_rebound_clear=0 nr_exected_after_rebound_clear=0 [ 950.778492] XXX: cpus_allowed=2 [ 950.778495] XXX: cpus_allowed_after_rebinding=2 -- -- Jason J. Herne (jjherne@linux.vnet.ibm.com)