Re: Subject: Warning in workqueue.c

From: Jason J. Herne
Date: Mon Feb 10 2014 - 10:32:28 EST


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@xxxxxxxxxxxxxxxxxx)

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