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Bug#804079: [Xen-devel] Kernel panic on Xen virtualisation in Debian

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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@jabber.windfluechter.net
> 
> 
> gpg pubkey:  http://www.juergensmann.de/ij_public_key.asc

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Bug#804079: [Xen-devel] Kernel panic on Xen virtualisation in Debian Ingo Jürgensmann <ij@2013.bluespice.org> - 2016-07-25 14:30 +0200
  Bug#804079: [Xen-devel] Kernel panic on Xen virtualisation in Debian Wei Liu <wei.liu2@citrix.com> - 2016-07-25 15:30 +0200
    Bug#804079: [Xen-devel] Kernel panic on Xen virtualisation in Debian Andreas Ziegler <ml@andreas-ziegler.de> - 2016-07-29 14:00 +0200
      Bug#804079: [Xen-devel] Kernel panic on Xen virtualisation in Debian Wei Liu <wei.liu2@citrix.com> - 2016-07-29 15:10 +0200
      Bug#804079: [Xen-devel] Kernel panic on Xen virtualisation in Debian Wei Liu <wei.liu2@citrix.com> - 2016-08-02 11:30 +0200
        Bug#804079: [Xen-devel] Kernel panic on Xen virtualisation in Debian Ingo Jürgensmann <ij@2013.bluespice.org> - 2016-08-02 12:40 +0200
          Bug#804079: [Xen-devel] Kernel panic on Xen virtualisation in Debian Wei Liu <wei.liu2@citrix.com> - 2016-08-02 14:50 +0200
            Bug#804079: [Xen-devel] Kernel panic on Xen virtualisation in Debian Andreas Ziegler <ml@andreas-ziegler.de> - 2016-11-14 17:00 +0100
              Bug#804079: [Xen-devel] Kernel panic on Xen virtualisation in Debian Wei Liu <wei.liu2@citrix.com> - 2016-11-29 10:30 +0100
                Bug#804079: [Xen-devel] Kernel panic on Xen virtualisation in Debian Ingo Jürgensmann <ij@2013.bluespice.org> - 2016-11-29 22:10 +0100
                Bug#804079: [Xen-devel] Kernel panic on Xen virtualisation in Debian Wei Liu <wei.liu2@citrix.com> - 2016-12-01 14:40 +0100
                Bug#804079: [Xen-devel] Kernel panic on Xen virtualisation in Debian Wei Liu <wei.liu2@citrix.com> - 2016-12-01 15:10 +0100
                Bug#804079: [Xen-devel] Kernel panic on Xen virtualisation in Debian Ingo Jürgensmann <ij@2013.bluespice.org> - 2016-12-01 15:40 +0100
                Bug#804079: [Xen-devel] Kernel panic on Xen virtualisation in Debian Sander Eikelenboom <linux@eikelenboom.it> - 2016-12-01 16:10 +0100

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