WARNING - OLD ARCHIVES

This is an archived copy of the Xen.org mailing list, which we have preserved to ensure that existing links to archives are not broken. The live archive, which contains the latest emails, can be found at http://lists.xen.org/
   
 
 
Xen 
 
Home Products Support Community News
 
   
 

xen-bugs

[Xen-bugs] Dom0 crash with xen 4

To: xen-bugs@xxxxxxxxxxxxxxxxxxx
Subject: [Xen-bugs] Dom0 crash with xen 4
From: Emile den Tex <emile@xxxxxxxxxxxx>
Date: Mon, 05 Jul 2010 16:02:35 +0200
Delivery-date: Wed, 28 Jul 2010 07:34:53 -0700
Envelope-to: www-data@xxxxxxxxxxxxxxxxxxx
List-help: <mailto:xen-bugs-request@lists.xensource.com?subject=help>
List-id: Xen Bugzilla <xen-bugs.lists.xensource.com>
List-post: <mailto:xen-bugs@lists.xensource.com>
List-subscribe: <http://lists.xensource.com/mailman/listinfo/xen-bugs>, <mailto:xen-bugs-request@lists.xensource.com?subject=subscribe>
List-unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-bugs>, <mailto:xen-bugs-request@lists.xensource.com?subject=unsubscribe>
Sender: xen-bugs-bounces@xxxxxxxxxxxxxxxxxxx
Hello,

We are running Linux 2.6.32.13 (x86_64) as dom0 with a Xen 4.0.0
hypervisor and experienced a dom0 kernel crash. This was in the night,
with no one logged in, no xen commands issued.

This is what to the kernel said before it died (copied from a screen
shot):

[..] xen_restore_fl_direct_end+0x0/0x1
[..] _spin_unlock_irqrestore+0x2b/0x50
[..] down_trylock+0x30/0x50
[..] oops_end+0xe1/0xf0
[..] do_divide_error+0x7e/0xa
[..] find_busiest_group+0x5f6/0xb50
[..] br_forward_finish+0x0/0x60 [bridge]
[..] nf_hook_slow+0xa6/0x100
[..] br_forward_finish+0x0/0x60 [bridge]
[..] divide_error+0x1b/0x20
[..] find_busiest_group+0x5f6/0xb50
[..] run_rebalance_domains+0x190/0x5c0
[..] __do_softirq+0xae/0x140
[..] call_softirq+0x65/0xa0
[..] xen_evtchn_do_upcall+0x3a/0x60
[..] xen_do_hypervisor_callback+0x1e/0x30
<EOI> [..] hypercall_page+0x3aa/0x1010
[..] xen_safe_halt+0xc/0x20
[..] xen_idle+0x3d/0x70
[..] cpu_idle+0xae/0xf0
[..] xen_irq_enable_direct_end+0x0/0x7
[..] cpu_bringup+0x68/0x6d

Unfortunatly this is all we have.

Only two things unusual te report in the setup:
- During dom0 boot we do got 'Unable to read CPU state' messages, but xm
info and the xenpm tool does give me an accurate report on the cpus.
- when doing 'ps aux' the xend daemon process has an incorrect age,
claims to run for over something like 21170349:10 hours (which is
impossible because unix wasn't developed back then) The system clock is
operating normally with tsc clocksource.

The hardware is an IBM X3550, 64GB ram, 2x quad-core Xeon CPU (E5506)

Any help would be greatly appreciated. We would love to bring xen 4 into
production, but are obviously a little intimidated by this crash.
Please mail if you need any more information.

Thanks alot,

Emile


_______________________________________________
Xen-bugs mailing list
Xen-bugs@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-bugs

<Prev in Thread] Current Thread [Next in Thread>
  • [Xen-bugs] Dom0 crash with xen 4, Emile den Tex <=