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Date:	Wed, 11 Nov 2009 22:15:08 +0100
From:	Oliver Neukum <>
To:	Oleg Nesterov <>
Cc:	"Rafael J. Wysocki" <>,
	Linus Torvalds <>,
	Thomas Gleixner <>,
	Mike Galbraith <>, Ingo Molnar <>,
	LKML <>,
	pm list <>,
	Greg KH <>,
	Jesse Barnes <>,
	Tejun Heo <>,
	Marcel Holtmann <>,
Subject: Re: GPF in run_workqueue()/list_del_init(cwq-> on resume (was: Re: Help needed: Resume problems in 2.6.32-rc, perhaps related to preempt_count leakage in keventd)

Am Mittwoch, 11. November 2009 21:24:33 schrieb Oleg Nesterov:
> > So, it looks like the bug is in btusb_destruct(), which should call
> > cancel_work_sync() on data->waker before freeing 'data'.  I guess it
> > should do the same for data->work.
> Or. btusb_suspend() and btusb_close() do cancel_work_sync(data->work),
> perhaps they should cancel data->waker as well, I dunno.
> I added Oliver to cc.

btusb_close() must do it. btusb_suspend() must not do it.

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