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[Xen-devel] Re: 2.6.32.27 dom0 - BUG: unable to handle kernel paging request



On Dec 30, 2010, at 8:29 PM, Jeremy Fitzhardinge wrote:

> On 12/31/2010 09:57 AM, Christopher S. Aker wrote:
>> Xen: 3.4.4-rc1-pre 64bit (xenbits @ 19986)
>> Dom0: 2.6.32.27-1 PAE (xen/stable-2.6.32.x @
>> 75cc13f5aa29b4f3227d269ca165dfa8937c94fe)
>> 
>> We've been running our xen-thrash testsuite on a bunch of hosts
>> against a very recent build, and we've just hit this on one box:
> 
> Ah, interesting.  This looks like something that Ian Jackson found on
> one of his test machines.
> 
> What was going on at the time?

Our xen-thrash testsuite was running.  It was configured to boot:

* 5 domUs swap thrashing (eatmem.c)
* 5 domUs that busy-loop CPU
* 5 domUs running crashme w/ 2.6.18 kernel
* 5 domUs running crashme w/ pv_ops kernel
* 5 domUs in a boot up -> sleep 60 -> shut down loop
* 5 domUs in a boot up -> sleep 60 -> xm destroy loop

We kicked off this identical run on 10 hosts.  On another host I cranked these 
numbers up to total about 80 domUs.  They're all still running fine.

The one that hit this BUG is still up, if any Hypervisor output would be 
helpful.

-Chris


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