Commit a6192d40 authored by Liran Alon's avatar Liran Alon Committed by Paolo Bonzini

KVM: nVMX: Fail VMLAUNCH and VMRESUME on shadow VMCS

Signed-off-by: default avatarLiran Alon <liran.alon@oracle.com>
Signed-off-by: default avatarJim Mattson <jmattson@google.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent fa97d7db
...@@ -11876,6 +11876,17 @@ static int nested_vmx_run(struct kvm_vcpu *vcpu, bool launch) ...@@ -11876,6 +11876,17 @@ static int nested_vmx_run(struct kvm_vcpu *vcpu, bool launch)
vmcs12 = get_vmcs12(vcpu); vmcs12 = get_vmcs12(vcpu);
/*
* Can't VMLAUNCH or VMRESUME a shadow VMCS. Despite the fact
* that there *is* a valid VMCS pointer, RFLAGS.CF is set
* rather than RFLAGS.ZF, and no error number is stored to the
* VM-instruction error field.
*/
if (vmcs12->hdr.shadow_vmcs) {
nested_vmx_failInvalid(vcpu);
goto out;
}
if (enable_shadow_vmcs) if (enable_shadow_vmcs)
copy_shadow_to_vmcs12(vmx); copy_shadow_to_vmcs12(vmx);
......
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