On Mon, Sep 26, 2011 at 10:45:35PM +0300, Pekka Enberg wrote: > On Mon, Sep 26, 2011 at 10:37 PM, Sasha Levin <[email protected]> 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
IMO yes, hypervisor has full access to guest memory so it's a safe assumption. But surviving in the face of hypervisor bugs is laudable goal, bugs do happen. -- MST -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
