linux-ext4 - Re: 2.6.25-git2: BUG: unable to handle kernel paging request at ffffffffffffffff

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Message-ID: <4812108D.6020103@gmail.com>
Date:	Fri, 25 Apr 2008 19:10:37 +0200
From:	Jiri Slaby <jirislaby@...il.com>
To:	Linus Torvalds <torvalds@...ux-foundation.org>
CC:	Zdenek Kabelac <zdenek.kabelac@...il.com>,
	Ingo Molnar <mingo@...e.hu>, "Rafael J. Wysocki" <rjw@...k.pl>,
	paulmck@...ux.vnet.ibm.com, David Miller <davem@...emloft.net>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-ext4@...r.kernel.org, herbert@...dor.apana.org.au,
	Pekka Enberg <penberg@...helsinki.fi>,
	Christoph Lameter <clameter@....com>
Subject: Re: 2.6.25-git2: BUG: unable to handle kernel paging request at ffffffffffffffff

On 04/25/2008 12:41 AM, Linus Torvalds wrote:
> Also, it does seem like you can re-create this at will in ways that others 
> can not. Could you try to bisect it a bit? Right now we have no real clue 
> what it is all about, except that it seems to be related to suspend/resume 
> and there are some indications that it's about networking (and _perhaps_ 
> wireless in particular).

Yes! I'm able to reproduce it 90%! We can exclude X, 80211 and so ath5k too (I 
removed them from /lib/modules, so they won't ever load).

I set the water mark at 1700 megabytes to allocate by the testing programs, so 
that it eats almost all free available memory. Then, I wait to "alloced 1" and 
then pm-suspend on second console. After resume, it spits out the corruption.

I'm going to bisect it, will be back in few hours ;).
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