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Re: [Xen-devel] BUG: x86-64 VT crash backtrace

To: Rik van Riel <riel@xxxxxxxxxx>
Subject: Re: [Xen-devel] BUG: x86-64 VT crash backtrace
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Tue, 25 Jul 2006 17:57:59 +0100
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, jun.nakajima@xxxxxxxxx
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On 25 Jul 2006, at 17:02, Rik van Riel wrote:

Hi Jun,

here is the x86-64 VT crash backtrace, as promised. I can trigger it within minutes by simply starting up a 64 bit VT domain on a 64 bit system.

The hideously long (but apparently valid) call sequence has overflowed the 4kB Xen stack. Given that stacks are only per-cpu on x86 Xen, I should probably just make them bigger (perhaps 8kB on debug builds, 16kB on non-debug builds). 64-bit non-debug builds already have (almost) 8kB stacks, so shouldn't see this crash.

 -- Keir

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