static u16 emulator_get_segment_selector(int seg, struct kvm_vcpu *vcpu)
{
	struct kvm_segment kvm_seg;

	kvm_get_segment(vcpu, &kvm_seg, seg);
	return kvm_seg.selector;
}

The product contains a concurrent code sequence that requires temporary, exclusive access to a shared resource, but a timing window exists in which the shared resource can be modified by another code sequence operating concurrently.