[Hardy, Intrepid] SRU: Under long-running load test, KVM guest freeze and host oops
Tim Gardner
tim.gardner at canonical.com
Tue Mar 3 02:22:46 UTC 2009
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
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