linux-kernel - Re: CONFIG_NUMA breaks hibernation on x86-32 with PAE

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Message-ID: <20081110082836.GB1969@elf.ucw.cz>
Date:	Mon, 10 Nov 2008 09:28:36 +0100
From:	Pavel Machek <pavel@...e.cz>
To:	Ingo Molnar <mingo@...e.hu>
Cc:	kernel list <linux-kernel@...r.kernel.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>, "H. Peter Anvin" <hpa@...or.com>
Subject: Re: CONFIG_NUMA breaks hibernation on x86-32 with PAE

On Mon 2008-11-10 09:04:36, Ingo Molnar wrote:
> 
> * Pavel Machek <pavel@...e.cz> wrote:
> 
> > > 
> > > * Pavel Machek <pavel@...e.cz> wrote:
> > > 
> > > > ...at least on 2.6.27 and 2.6.28-rc3. Resume gets to 
> > > > acpi_hibernation_leave, then SLAB corruption is detected and machine 
> > > > ends in series of oops.
> > > > 
> > > > Any ideas how to debug that?
> > > 
> > > do you get any serial log or USB key output, so that it's debuggable 
> > > directly?
> > 
> > Well, I can transcribe the BUG() from a picture, I guess, but it does
> > not seem to contain much useful info: SLAB corruption was detected and
> > backtrace is not quite important at that point...
> > 
> > Serial console is probably possible, but would take few days to setup.
> 
> No good ideas - the bug description gives me the impression of memory 
> maps save/restore hickup in the hibernation code - and memory maps are 
> pretty much the only thing that are significantly different on NUMA. 
> (amongst the things that would matter to hibernation - there's a lot 
> more other NUMA details)
> 
> In any case, could you send the .config that fails please, so that 
> this is documented better?

Attached... but exact config does not seem to matter.

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

View attachment ".config" of type "text/plain" (70099 bytes)