[Pkg-xen-devel] Bug#912975: xen-hypervisor-4.8-amd64: Dom0 crashes randomly without logs on Debian Stretch with Xen 4.8.4

[Hans van Kranenburg]

On 1/3/19 11:02 AM, Patrick Beckmann wrote:
> 
> this bug description sounds a lot like a problem we have with two Xen
> Dom0s, so I am replying here.

The original reporter for this bug didn't show errors yet to compare,
but at least it's a "something crashes" scenario. ;]

> One of our machines has been running stable on Debian 8 and was newly
> upgraded to Debian 9, another one is new hardware with a fresh
> installation. With the most recent Debian 9 they crash at a rate from
> every 3 days to 3 times a day, suspected to be depending on load.
> Versions are
> - Xen hypervisor: 4.8.4+xsa273+shim4.10.1+xsa273-1+deb9u10
> - Linux Kernel:	  4.9.130-2
> 
> On Tue, 6 Nov 2018 18:54:53 +0100 Hans van Kranenburg <hans at knorrie.org>
> wrote:
>> Are you able to configure and capture output from serial console?
> 
> We have been able to capture the output of our new machine crashing.
> Please find it attached to this e-mail. Unfortunately it lacks the lines
> during boot time. If you need them or any other information, please let
> me know.

That's the same error as discussed in this thread, and it looks like
it's not narrowed down to something reproducible yet.

https://lists.xenproject.org/archives/html/xen-devel/2018-12/msg00938.html

I don't think the Debian packaging people can be of great help here by
sitting in between upstream and you. This is an upstream bug, and I've
never encountered that one myself, nor do I know how to cause it to help
debugging.

Maybe you can join in on that discussion on the Xen mailing list to
provide more info about your situation?

Hans