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Re: [Xen-devel] 3.1/2 live migration panic

To: John Levon <levon@xxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] 3.1/2 live migration panic
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Thu, 17 Jan 2008 08:11:56 +0000
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, Tim Deegan <Tim.Deegan@xxxxxxxxxx>
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On 17/1/08 02:42, "John Levon" <levon@xxxxxxxxxxxxxxxxx> wrote:

> Right, I added something to dig out the pending serial console buffer:
> 
>> ::serlog
> .1.2-xvm  x86_64  debug=y  Not tainted ]----
> (XEN) CPU:    3
> (XEN) RIP:    e008:[<ffff828c801b4848>] shadow_get_and_create_l1e+0x47/0x32f

Oh, also this debug build backtrace is very different from the non-debug
one. Do you think the non-debug backtrace was totally bogus, or are we
looking at a common-mode fault that can have both symptoms (i.e, almost-NULL
pointer in shadow_set_l1e(); *and* bogus linear pagetable pointer in
shadow_get_and_create_l1e())?

 -- Keir



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