diff --git a/sys/vm/vm_meter.c b/sys/vm/vm_meter.c
--- a/sys/vm/vm_meter.c
+++ b/sys/vm/vm_meter.c
@@ -433,6 +433,8 @@
 
 	vmm = gd->gd_cnt;
 	vmm.v_intr += vmm.v_ipi + vmm.v_timer;
+	vmm.v_lock_addr = NULL;
+	bzero(vmm.v_lock_name, sizeof(vmm.v_lock_name));
 	return (sysctl_handle_opaque(oidp, &vmm, sizeof(vmm), req));
 }