[Pkg-xen-devel] domU lenny not working: kernel BUG at lib/radix-tree.c:474!

[Ian Campbell]

On Sun, 2008-08-24 at 12:42 +0100, Sally-Anne Edwards wrote:
> 
> 
> On Sun, Aug 24, 2008 at 12:38 PM, Ian Campbell <ijc at hellion.org.uk>
> wrote:
>         On Sun, 2008-08-24 at 11:48 +0100, Sally-Anne Edwards wrote:
>         >
>         >
>         >         If you remove the vfb from your guest configuration
>         and
>         >         install over the
>         >         hvc console it ought to work. The Xen images don't
>         currently
>         >         support
>         >
>         >
>         >
>         > That fixed it, but now I have a new bug
>         >
>         > My disk is defined like this:
>         >
>         > disk = ['phy:/dev/mapper/VolGroup00-debtest1,xvda,w']
>         
>         
>         Mine is the same.
>         
>         >   │ [   97.520018] BUG: unable to handle kernel paging
>         request at
>         > e7437cc0  │
>         
>         This is a new one to me. How much RAM do the host and guest
>         have? Your
>         host is running an Etch kernel on Lenny hypervisor + tools?
> 
> Host: 4GB, etch kernel, lenny, all amd64
> Guest: 256MB, lenny 

Mine is pretty much the same. I'm using a 2.6.18 dom0 kernel built from
the xensource tree at http://xenbits.xensource.com/linux-2.6.18-xen.hg
but I don't see that would make a difference although when I get a
chance I'll reboot into an Etch kernel to be sure.

My guest was only 128M but I just upped it to 256M and it was ok. Can
you send the complete config file you are using.

>         It would be much appreciated if you would report this one to
>         upstream.
> 
> How should I do that?

email to linux-kernel at vger.kernel.org cc'ing Jeremy Fitzhardinge
<jeremy at goop.org>. please cc me to so I can follow the thread.

> Is there any other diagnostic output I should look for?

You could try adding "debug" to your kernel command line (taking away
quiet if present). Jeremy will likely suggest some others.

> Can you suggest any workaround I can try?

I can't think of one.

> 
> Win XP Pro SP2 is working in HVM on the same dom0.

Excellent.

Ian.
-- 
Ian Campbell

Be valiant, but not too venturous.
Let thy attire be comely, but not costly.
		-- John Lyly
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