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Bug#674411: linux-image-2.6.32-5-xen-686: Kernel crashes if AIO is used on pages belonging to guests



On Thu, 2012-05-24 at 11:57 +0000, George Dunlap wrote:
> Package: linux-2.6
> Version: 2.6.32-45
> Severity: normal
> 
> The kernel version in this package does not handle AIO to pages 
> owned by guest domains ("foreign domains") properly.  Newer versions of qemu
> will attempt to use AIO for disk reads and writes; this causes domain 0 to crash
> if you're running.

Thanks George. Do you happen to have a log of the actual kernel crash?

I think Stefano (CCd) has been fixing this issue (or at least one which
sounds very similar) in the upstream kernels recently. Stefano is there
anything specific I can backport to a Jeremy xen.git 2.6.32 style pvops
kernel? Or is there another appropriate fix?

FYI Squeeze's kernel is based on e73f4955a821 from Jeremy's tree,
although with a bunch of fixes backported too.

Thanks,
Ian.

-- 
Ian Campbell


Likewise, the national appetizer, brine-cured herring with raw onions,
wins few friends, Germans excepted.
		-- Darwin Porter "Scandinavia On $50 A Day"

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