Kernel panic on CentOS

Kernel panic on CentOS

[Mikko C.]

Hi,
we keep getting kernel panics on our CentOS 6.3 server, running about 40 
KVM virtual machines.

Here's the screenshot of the trace: http://i.imgur.com/yaRyF.png

# uname -a
Linux srv010 2.6.32-71.el6.x86_64 #1 SMP Fri May 20 03:51:51 BST 2011 
x86_64 x86_64 x86_64 GNU/Linux

CPU is Intel i7-2600K with 32GB DDR3 ram.

If there's any more info we can provide, please let me know.
Thanks
Mikko

Re: Kernel panic on CentOS

[Chris Ball]

Hi,

On Mon, Oct 15 2012, Mikko C. wrote:
> we keep getting kernel panics on our CentOS 6.3 server, running about
> 40 KVM virtual machines.
>
> Here's the screenshot of the trace: http://i.imgur.com/yaRyF.png

The presence of machine_check() suggests that you have a hardware
problem that the kernel doesn't know how to recover from.
(Although you only sent part of the trace.)

http://en.wikipedia.org/wiki/Machine_Check_Exception

- Chris.
-- 
Chris Ball   <cjb@laptop.org>   <http://printf.net/>
One Laptop Per Child

Re: Kernel panic on CentOS

[Alan Cox]

On Mon, 15 Oct 2012 21:41:20 +0200
"Mikko C." <mikko.cal@gmail.com> wrote:

> Hi,
> we keep getting kernel panics on our CentOS 6.3 server, running about 40 
> KVM virtual machines.
> 
> Here's the screenshot of the trace: http://i.imgur.com/yaRyF.png
> 
> # uname -a
> Linux srv010 2.6.32-71.el6.x86_64 #1 SMP Fri May 20 03:51:51 BST 2011 
> x86_64 x86_64 x86_64 GNU/Linux
> 
> CPU is Intel i7-2600K with 32GB DDR3 ram.
> 
> If there's any more info we can provide, please let me know.

You are in the wrong place - the Red Hat enterprise kernels deviate a lot
from upstream and are very old. Really you need to go back to the Centos
community with it.

Alan

Re: Kernel panic on CentOS

[Akemi Yagi]

On Tue, 16 Oct 2012 00:10:07 +0100, Alan Cox wrote:

> On Mon, 15 Oct 2012 21:41:20 +0200 "Mikko C." <mikko.cal@gmail.com>
> wrote:
> 
>> Hi,
>> we keep getting kernel panics on our CentOS 6.3 server, running about
>> 40 KVM virtual machines.
>> 
>> Here's the screenshot of the trace: http://i.imgur.com/yaRyF.png
>> 
>> # uname -a Linux srv010 2.6.32-71.el6.x86_64 #1 SMP Fri May 20 03:51:51
>> BST 2011 x86_64 x86_64 x86_64 GNU/Linux

> You are in the wrong place - the Red Hat enterprise kernels deviate a
> lot from upstream and are very old. Really you need to go back to the
> Centos community with it.
> 
> Alan

This is more like general info/tip: anyone wishing to test the latest 
mainline/stable kernels from kernel.org on RHEL systems can do so by 
installing kernel-ml [1] from the ELRepo Project. As of today, 3.6.2 and 
3.0.46 are available for RHEL-6.

Akemi

[1] http://elrepo.org/tiki/kernel-ml