Index: head/sys/vm/vm_radix.c
===================================================================
--- head/sys/vm/vm_radix.c
+++ head/sys/vm/vm_radix.c
@@ -112,7 +112,7 @@
 {
 	struct vm_radix_node *rnode;
 
-	rnode = uma_zalloc(vm_radix_node_zone, M_NOWAIT | M_ZERO);
+	rnode = uma_zalloc(vm_radix_node_zone, M_NOWAIT);
 	if (rnode == NULL)
 		return (NULL);
 	rnode->rn_owner = owner;
@@ -283,6 +283,16 @@
 }
 #endif
 
+static int
+vm_radix_node_zone_init(void *mem, int size __unused, int flags __unused)
+{
+	struct vm_radix_node *rnode;
+
+	rnode = mem;
+	bzero(rnode, sizeof(*rnode));
+	return (0);
+}
+
 #ifndef UMA_MD_SMALL_ALLOC
 void vm_radix_reserve_kva(void);
 /*
@@ -321,7 +331,7 @@
 #else
 	    NULL,
 #endif
-	    NULL, NULL, VM_RADIX_PAD, UMA_ZONE_VM);
+	    vm_radix_node_zone_init, NULL, VM_RADIX_PAD, UMA_ZONE_VM);
 }
 
 /*