It’s been a long time since I saw that, but I had a similar issue.
IIRC, the kernel you’re running has a bug in iSCSI, fixed in the 3.8.0-35 
version
What we experienced (in Ubuntu 12.04) was when a user would detach a cinder 
volume, the compute node would KP.
Kernel upgrade fixed it.
I’m not 100% certain that is your issue, but you may be looking at a 
maintenance window and a kernel package upgrade.

On Sep 11, 2014, at 12:51 PM, Flávio Ramalho <[email protected]> wrote:

> Hello Abel,
> 
> Sorry for the missing info.
> 
> I am running Ubuntu 12.04 - 3.8.0-29-generic, QEMU emulator version
> 1.5.0 and Openstack Havana.
> 
> 2014-09-11 16:31 GMT-03:00 Abel Lopez <[email protected]>:
>> More info please!
>> What distro? What kernel version? what version of kvm? what version of 
>> openstack?
>> 
>> On Sep 11, 2014, at 12:26 PM, Flávio Ramalho <[email protected]> wrote:
>> 
>>> Hi,
>>> 
>>> Some compute nodes are frequently having kernel panic and, as far as I see, 
>>> the kernel
>>> panics are related with KVM.
>>> 
>>> Do you guys have any recommendation about the kernel and KVM version to be 
>>> used in
>>> an production environment?
>>> 
>>> Thanks,
>>> 
>>> Flávio
>>> _______________________________________________
>>> OpenStack-operators mailing list
>>> [email protected]
>>> http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack-operators
>> 
> 
> 
> 
> -- 
> []'s
> Flávio

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