Re: [PATCH 1/2] virtio-net: Verify page list size before fitting into skb

[Pekka Enberg]

On Mon, Sep 26, 2011 at 10:37 PM, Sasha Levin <levinsasha928@xxxxxxxxx> wrote:
>> Interesting.  This is a theoretical issue, correct?
>> Not a crash you actually see.
>
> Actually it was an actual crash caused when our virtio-net driver in kvm
> tools did funny things and passed '(u32)-1' length as a buffer length to
> the guest kernel.

I'm not sure what Michael means with "theoretical issue" here. Can the guest
driver assume that the hypervisor doesn't attempt to do nasty things?

                          Pekka
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