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

To: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Subject: Re: [Xen-devel] 3.1/2 live migration panic
From: John Levon <levon@xxxxxxxxxxxxxxxxx>
Date: Thu, 17 Jan 2008 00:10:09 +0000
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, Tim Deegan <Tim.Deegan@xxxxxxxxxx>
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On Wed, Jan 16, 2008 at 11:01:21PM +0000, Keir Fraser wrote:

> Well that's a lot saner even without being a debug build. Possibly Tim has

I totally missed that I didn't have a debug build. My little script to
build Xen itself was broken, and wasn't setting 'debug=y'. This also
explains the bad Solaris panic stack (no frame pointer, and we expect
it). There was also another problem[1].

I'll reproduce in debug mode, and look some more at stuff around
shadow_set_l1e() as you suggest, and get back to you soon.

cheers
john

[1] because we don't want to get stuck, the Solaris panic path doesn't
take any locks, and that means no console_start_sync(), so we were
leaving the printk serial buffer unprinted.

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