Index: head/sys/vm/vm_map.c
===================================================================
--- head/sys/vm/vm_map.c
+++ head/sys/vm/vm_map.c
@@ -283,12 +283,7 @@
 	struct vmspace *vm;
 
 	vm = uma_zalloc(vmspace_zone, M_WAITOK);
-
 	KASSERT(vm->vm_map.pmap == NULL, ("vm_map.pmap must be NULL"));
-
-	if (pinit == NULL)
-		pinit = &pmap_pinit;
-
 	if (!pinit(vmspace_pmap(vm))) {
 		uma_zfree(vmspace_zone, vm);
 		return (NULL);
@@ -3424,7 +3419,8 @@
 
 	old_map = &vm1->vm_map;
 	/* Copy immutable fields of vm1 to vm2. */
-	vm2 = vmspace_alloc(vm_map_min(old_map), vm_map_max(old_map), NULL);
+	vm2 = vmspace_alloc(vm_map_min(old_map), vm_map_max(old_map),
+	    pmap_pinit);
 	if (vm2 == NULL)
 		return (NULL);
 	vm2->vm_taddr = vm1->vm_taddr;
@@ -3975,7 +3971,7 @@
 
 	KASSERT((curthread->td_pflags & TDP_EXECVMSPC) == 0,
 	    ("vmspace_exec recursed"));
-	newvmspace = vmspace_alloc(minuser, maxuser, NULL);
+	newvmspace = vmspace_alloc(minuser, maxuser, pmap_pinit);
 	if (newvmspace == NULL)
 		return (ENOMEM);
 	newvmspace->vm_swrss = oldvmspace->vm_swrss;