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

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Message-ID: <c4e36d110804231327t3a4f90e0ya44b68c42e9dee2e@mail.gmail.com>
Date:	Wed, 23 Apr 2008 22:27:53 +0200
From:	"Zdenek Kabelac" <zdenek.kabelac@...il.com>
To:	"Pekka J Enberg" <penberg@...helsinki.fi>
Cc:	"Christoph Lameter" <clameter@....com>,
	"Linus Torvalds" <torvalds@...ux-foundation.org>,
	"Ingo Molnar" <mingo@...e.hu>, "Jiri Slaby" <jirislaby@...il.com>,
	"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
Subject: Re: 2.6.25-git2: BUG: unable to handle kernel paging request at ffffffffffffffff

2008/4/23, Pekka J Enberg <penberg@...helsinki.fi>:
> On Wed, 23 Apr 2008, Christoph Lameter wrote:
>  > We should have returned from the function and not printed this message. If
>  > we somehow skipped the test for !fault then end could have wrapped around
>  > which gets us to 4GB.
>
>
> Aah, looks like it's just a silly bug in slab_fix(). If this looks ok to
>  Christoph, can you re-test with this patch applied Zdenek? That way we'll
>  actually know where SLUB expected to see POISON_INUSE.

Unfortunately it won't  be easy to retest - I just know it happened to
me with some wi-fi networking interaction after resume. I'll rebuild
kernel with these slab patches - but I have now idea how to trigger
the bug.

In the attachment is bzip-ed dmesg in case it would be still needed
for something.

Zdenek

Download attachment "messages.txt.bz2" of type "application/x-bzip2" (17363 bytes)