diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
index f9d56c1945de..ad5e0806e1e1 100644
--- a/arch/x86/kvm/vmx.c
+++ b/arch/x86/kvm/vmx.c
@@ -5125,6 +5125,7 @@ static int handle_dr(struct kvm_vcpu *vcpu)
 			vcpu->run->exit_reason = KVM_EXIT_DEBUG;
 			return 0;
 		} else {
+			vcpu->arch.dr6 &= ~15;
 			vcpu->arch.dr6 |= DR6_BD | DR6_RTM;
 			kvm_queue_exception(vcpu, DB_VECTOR);
 			return 1;