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SubjectRe: [PATCH 0/6] KVM: nVMX: propperly handle enlightened vmptrld failure conditions
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On 09/03/20 16:52, Vitaly Kuznetsov wrote:
> Miaohe Lin noticed that we incorrectly handle enlightened vmptrld failures
> in nested_vmx_run(). Trying to handle errors correctly, I fixed
> a few things:
> - NULL pointer dereference with invalid eVMCS GPAs [PATCH1]
> - moved eVMCS mapping after migration to nested_get_vmcs12_pages() from
> nested_sync_vmcs12_to_shadow() [PATCH2]
> - added propper nested_vmx_handle_enlightened_vmptrld() error handling
> [PATCH3]
> - added selftests for incorrect eVMCS revision id and GPA [PATCHes4-6]
>
> PATCH1 fixes a DoS and thus marked for stable@.
>
> Vitaly Kuznetsov (6):
> KVM: nVMX: avoid NULL pointer dereference with incorrect EVMCS GPAs
> KVM: nVMX: stop abusing need_vmcs12_to_shadow_sync for eVMCS mapping
> KVM: nVMX: properly handle errors in
> nested_vmx_handle_enlightened_vmptrld()
> KVM: selftests: define and use EVMCS_VERSION
> KVM: selftests: test enlightened vmenter with wrong eVMCS version
> KVM: selftests: enlightened VMPTRLD with an incorrect GPA
>
> arch/x86/kvm/vmx/evmcs.h | 7 ++
> arch/x86/kvm/vmx/nested.c | 64 +++++++++++++------
> tools/testing/selftests/kvm/include/evmcs.h | 2 +
> tools/testing/selftests/kvm/lib/x86_64/vmx.c | 2 +-
> .../testing/selftests/kvm/x86_64/evmcs_test.c | 25 ++++++--
> 5 files changed, 72 insertions(+), 28 deletions(-)
>

Queued, thanks.

Paolo

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