[Hardy, Intrepid] SRU: Under long-running load test, KVM guest freeze and host oops

[Tim Gardner]

Stefan Bader wrote:
> https://bugs.edge.launchpad.net/ubuntu/+source/linux/+bug/335097
> 
> [Jaunty contains the fix.]
> 
> SRU justification:
> 
> Impact: The function kvm_mmu_remove_write_access() runs under the 
> slots_lock protection but the list it walks can be modified by other 
> codepaths using the mmu_lock. This causes the host to Oops and the 
> guests will hang.
> 
> Fix: Patch backported from upstream to add mmu_lock protection around 
> the list walk.
> 
> Testcase: Running the validation suite for a longer period of time (24hrs).
> 

ACK

-- 
Tim Gardner tim.gardner at canonical.com