linux-kernel - 2.6.24-rc7 lockdep warning when poweroff

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Message-ID: <a8e1da0801140104m2d8dceaayd8cf85466659bbf@mail.gmail.com>
Date:	Mon, 14 Jan 2008 17:04:05 +0800
From:	"Dave Young" <hidave.darkstar@...il.com>
To:	"Linus Torvalds" <torvalds@...ux-foundation.org>
Cc:	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	"Ingo Molnar" <mingo@...e.hu>
Subject: 2.6.24-rc7 lockdep warning when poweroff

Hi,

When I "halt -p", lockdep warnings triggered as following (hand copy):

WARNING : at kernel/lockdep.c: 700 lookup_lock_class()

<snip>
lock_acquire
cleanup_workqueue_thread
workqueue_cpu_callback
notifier_call_chain
__raw_notifier_call_chain
raw_notifier_call_chain
__cpu_down
disable_nonboot_cpus
kernel_power_off
sys_reboot
<snip>

Regards
dave
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