KVM: VMX: Fix locking imbalance on emulation failure

We have to disable preemption and IRQs on every exit from
handle_invalid_guest_state, otherwise we generate at least a
preempt_disable imbalance.

Signed-off-by: Jan Kiszka <[e-mail]>
Signed-off-by: Marcelo Tosatti <[e-mail]>
Signed-off-by: Avi Kivity <[e-mail]>

arch/x86/kvm/vmx.c

···
 
 		if (err != EMULATE_DONE) {
 			kvm_report_emulation_failure(vcpu, "emulation failure");
-			return;
+			break;
 		}
 
 		if (signal_pending(current))