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

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Message-Id: <200804211919.03070.rjw@sisk.pl>
Date:	Mon, 21 Apr 2008 19:19:01 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Jiri Slaby <jirislaby@...il.com>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	LKML <linux-kernel@...r.kernel.org>, Ingo Molnar <mingo@...e.hu>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-ext4@...r.kernel.org,
	Herbert Xu <herbert@...dor.apana.org.au>,
	"Paul E. McKenney" <paulmck@...ibm.com>,
	"David S. Miller" <davem@...emloft.net>
Subject: Re: 2.6.25-git2: BUG: unable to handle kernel paging request at ffffffffffffffff

On Monday, 21 of April 2008, Jiri Slaby wrote:
> On 04/21/2008 06:54 PM, Linus Torvalds wrote:
> > Jiri - could you also confirm whether you are usign SLUB (which is not 
> > necessarily at all indicative of a SLUB bug itself - it's just that SLAB 
> > won't ever even merge different allocations of the same size into the same 
> > buckets, so if it's a cross-slab corruption, you'd simply never see it 
> > with SLAB).
> 
> Yeah, I'm using slub. Going to boot to slub_debug.
> 
> Thanks so far.
> 
> BTW. I haven't see this without suspend/resume cycle, do you, Rafael?

Well, I've seen it only once so far. :-)

> It doesn't mean anything, since it needs longer time to trigger, but anyway,
> it might be a clue.

I think we need some more data anyway.

Thanks,
Rafael
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