From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Jan Beulich" <JBeulich@novell.com>
Subject: Re: live migration fails (assert in shadow_hash_delete)
Date: Fri, 26 Feb 2010 10:27:33 +0000
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	<C7AAB773.B23E%keir.fraser@eu.citrix.com>
	<20100226095225.GT368@whitby.uk.xensource.com>
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To: Tim Deegan <Tim.Deegan@citrix.com>
Cc: Ashish Bijlani <ashish.bijlani@gmail.com>, "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>, Keir Fraser <keir.fraser@eu.citrix.com>
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>>> Tim Deegan <Tim.Deegan@citrix.com> 26.02.10 10:52 >>>
>The bug seems to have come in between 4.0.0 rc1 (20789) and 20822.
>Bisecting between those is more fun because PV domain creation and =
migration
>were broken in libxc then.  Reverting 20808 (the only cset there that
>touches the shadow code) doesn't fix the problem.
>
>Selective backporting yesterday seemed to blame 20812 ("xend: NUMA: fix
>division by zero on unpopulated nodes"), which seems unlikely.  I'll dig
>further.

I'd think 20792 is a good candidate - a copy-and-paste mistake would
cause the page subsequent to the one allocated to be overwritten.
Will send a patch in a minute.

Jan