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Bug#860236: xen pv domU crash with 3.16 kernel and xen 4.8



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On Thu, 2017-04-13 at 11:18 +0200, Vincent Legout wrote:
> Package: src:linux
> Version: 3.16.39-1+deb8u2
> Severity: normal
> 
> Hi,
> 
> A xen jessie domU crashes around 5 minutes after the boot with the
> attached backtrace (at every boot). dom0 is also a Debian jessie running
> Xen 4.8.
> 
> It only happens when the guest is in pv mode, it works fine with pvhvm.
> 
> It also crashes with older 3.16 kernels and 4.0.2-1, but not with
> 4.2.1-1 (last 2 kernels from snapshot.debian.org).
> 
> # uname -a
> 3.16.0-4-amd64 #1 SMP Debian 3.16.39-1+deb8u2 (2017-03-07) x86_64 GNU/Linux

From the crash log:

> [  300.632389] CPU: 0 PID: 0 Comm: swapper/0 Tainted: G        W     3.16.0-4-amd64 #1 Debian 3.16.39-1+deb8u2

This indicates there was an earlier WARNING message; what was that?

Ben.

-- 
Ben Hutchings
Any sufficiently advanced bug is indistinguishable from a feature.

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