linux-kernel - Re: Subject: Warning in workqueue.c

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Message-ID: <52F8F0FB.3080206@linux.vnet.ibm.com>
Date:	Mon, 10 Feb 2014 10:32:11 -0500
From:	"Jason J. Herne" <jjherne@...ux.vnet.ibm.com>
To:	Tejun Heo <tj@...nel.org>
CC:	linux-kernel@...r.kernel.org, Lai Jiangshan <laijs@...fujitsu.com>
Subject: Re: Subject: Warning in workqueue.c

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@...ux.vnet.ibm.com)

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