Re: KVM: MMU: handle invalid root_hpa at __direct_map

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On Sun, Dec 22, 2013 at 11:17:21AM +0200, Rom Freiman wrote:
> Hello everyone,
> 
> I've been chasing this bug for a while.
> 
> According to my research, this bug fix is works fine for
> 3.11.9-200.fc19.x86_64 kernel version (and I also came to almost similar
> solution and really solved the crash).
> 
> But, the problem is, that it seems that this patch does not work on 3.13.0-rc2+
> - it looks like the code flow is different and it crashes in ept_page_fault
> and does not reach __direct_map:

Yep, similar problem, care to send a patch against

FNAME(page_fault), kvm_mmu_get_spte_hierarchy

Maybe there are more vulnerable sites, should secure them all.

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