--- a/sys/vm/vm_map.c
+++ b/sys/vm/vm_map.c
@@ -4248,7 +4248,9 @@
 			   0, NULL,
 			   addr, stack_entry->ba.start,
 			   VM_MAPTYPE_NORMAL,
-			   VM_SUBSYS_STACK, VM_PROT_ALL, VM_PROT_ALL, 0);
+			   VM_SUBSYS_STACK,
+			   stack_entry->protection,
+			   stack_entry->max_protection, 0);
 
 	/* Adjust the available stack space by the amount we grew. */
 	if (rv == KERN_SUCCESS) {