linux-kernel - Re: Linux 2.6.22-rc4

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Message-ID: <20070605201643.GA4424@elf.ucw.cz>
Date:	Tue, 5 Jun 2007 22:16:43 +0200
From:	Pavel Machek <pavel@....cz>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
Cc:	Ingo Molnar <mingo@...e.hu>,
	Michal Piotrowski <michal.k.k.piotrowski@...il.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	linux-pm@...ts.linux-foundation.org,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>
Subject: Re: Linux 2.6.22-rc4

Hi!

> > isnt the refrigerator() suspend related? Perhaps suspend disables irqs 
> > somewhere that we forgot to track?
> 
> There _is_ something strange there. For that whole sequence to trigger, 
> the current task has to have the TIF_FREEZE bit set, but I don't see why 
> it would be during shutdown.

[  116.733327] PM: suspend-to-disk mode set to 'shutdown'
[  116.738849] swsusp: Basic memory bitmaps created
[  116.745353] Stopping tasks ... WARNING: at
/home/devel/linux-git/kernel/lockdep.c:2414 check_flags()
[  116.754921]  [<c0404fbf>] show_trace_log_lvl+0x1a/0x2f
[  116.754937]  [<c0405bd6>] show_trace+0x12/0x14

No, he's not shutting down, he's trying to snapshot his
machine. 'shutdown' will be done at end of hibernation, _way_ after
this.

								Pavel

-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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