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

[Wei Liu <wei.liu2@xxxxxxxxxx>]

On Mon, Jul 25, 2016 at 01:41:41PM +0200, Ingo Jürgensmann wrote:
> 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?
> 

I was thinking about building directly from xen.git.

http://wiki.xenproject.org/wiki/Compiling_Xen_From_Source

Probably try the Xen 4.7 release.

Wei.

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