From mboxrd@z Thu Jan  1 00:00:00 1970
From: Avi Kivity <avi@qumranet.com>
Subject: Re: Oops for sale
Date: Fri, 06 Jun 2008 23:48:55 +0300
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References: <48494341.1060007@redhat.com>
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Cc: kvm@vger.kernel.org
To: Gerd Hoffmann <kraxel@redhat.com>
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Gerd Hoffmann wrote:
>   Hi,
>
> Got a kernel oops with a stack trace deep somewhere in kvm ...
>
> This is a stock Fedora-8 kernel with kvm-69 external modules.
> Happens when trying to boot the Fedora-9 xen kernel using xenner.
>   

This is page_header_update_slot().  Looks like 'sp' == 1 here.

Does it reproduce (and quickly)?  If so, please try MMU_DEBUG.

-- 
Do not meddle in the internals of kernels, for they are subtle and quick to panic.