Re: Machine check exception

["F. P. Beekhof" <fpbeekhof@gmail.com>]

On 07/27/2011 07:03 PM, Borislav Petkov wrote:
> On Wed, Jul 27, 2011 at 05:31:56PM +0200, F. P. Beekhof wrote:
>> $ sudo rdmsr 0xc001001f
>> 8
>>
>> Is there anything else I can do ?
>
> Ok, I'd like you to try something out:
>
> Boot into runlevel 1: you need this because you get the MCE before
> you've done starting apache. For that, add a "1" to your kernel command
> line and boot. When you get the prompt, type in your root pwd and do
>
> wrmsr 0xc001001f $(( $(rdmsr -u 0xc001001f) | (1<<  20) ))
>
> Then do
>
> rdmsr -x 0xc001001f
>
> to verify that the write has succeeded. It should say
>
> 0x00100008.
>
> then exit the prompt to continue to runlevel 2 to see whether this
> setting fixes your MCE issue.
>
> This is for now,
> thanks.
>

Ok, writing the register worked.

Now we just need to wait, these crashes occur at random moments. 
Sometimes there is 5 minutes between two crashes, sometimes a few days...

I'll post an update as soon as I have more information.

Thanks for helping out!