Re: [Xen-devel] Kernel panic on Xen virtualisation in Debian

[Ingo Jürgensmann <ij@xxxxxxxxxxxxxxxxxx>]

On 25.07.2016 12:23, Wei Liu wrote:

First, thank you for replying! Very much appreciated! :)

> I did skim your emails. But the oops was happening in memcpy+0x6 which
> indicated it came back to the origin question why would it got an
> exception there.
>
> Just by staring at the code doesn't get me anywhere. Without a concrete
> reproduction of the issue, I'm afraid I can't provide more input here.
Well, from my point of view, it happens quite often when accessing the 
server via SSH. For example today it crashed when I wanted to add 
something and after I clicked into putty and typed the first char. In 
another putty, where I have my netconsole log open, I instantly saw the 
oops.
But what exactly causing these kinds of reboots, I'm clueless as you 
too. Only that I do experience far more frequent crashes when accessing 
the server from workplace via putty on Windows than via SSH on OSX or 
Debian Linux.
> There are several moving parts:
> 0. Hardware
> 1. Xen hypervisor
> 2. Dom0 kernel
> Your report and the debian report suggested that Dom0 kernel is less
> likely to be the culprit because you've tried different Dom0 kernels.
As just written in the other mail, I already tried kernel 4.5 from 
backports. Still crashing.
> As for Xen, not sure if you would be up for trying a debug build from
> source tree. That would help provide information on whether this is a
> bug in Xen or not.
Will try to build from Debian source, but how to enable debug build?

--
Ciao...          //        http://blog.windfluechter.net
      Ingo     \X/     XMPP: ij@xxxxxxxxxxxxxxxxxxxxxxxx


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