linux-kernel - [lkp] [workqueue] 82607adcf9: BUG: workqueue lockup - pool cpus=0 flags=0x4 nice=0 stuck for 42s!

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Message-ID: <87y4ao6qx3.fsf@yhuang-dev.intel.com>
Date:	Sun, 14 Feb 2016 09:07:04 +0800
From:	kernel test robot <ying.huang@...ux.intel.com>
TO:	Tejun Heo <tj@...nel.org>
CC:	Don Zickus <dzickus@...hat.com>
Subject: [lkp] [workqueue] 82607adcf9: BUG: workqueue lockup - pool cpus=0
 flags=0x4 nice=0 stuck for 42s!

FYI, we noticed the below changes on

https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master
commit 82607adcf9cdf40fb7b5331269780c8f70ec6e35 ("workqueue: implement lockup detector")


[   75.684302] virtio-pci 0000:00:06.0: virtio_pci: leaving for legacy driver
[   88.791869] ACPI: PCI Interrupt Link [LNKC] enabled at IRQ 11
[   88.795120] virtio-pci 0000:00:07.0: virtio_pci: leaving for legacy driver
[   90.789792] BUG: workqueue lockup - pool cpus=0 flags=0x4 nice=0 stuck for 42s!
[   90.794158] Showing busy workqueues and worker pools:
[   90.796507] workqueue cgroup_pidlist_destroy: flags=0x0
[   90.798976]   pwq 0: cpus=0 node=0 flags=0x0 nice=0 active=1/1





Thanks,
Kernel Test Robot

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