Index: sys/vm/vm_map.c
===================================================================
--- sys/vm/vm_map.c
+++ sys/vm/vm_map.c
@@ -4687,7 +4687,7 @@
 	vm_map_entry_t entry;
 	vm_map_t map = *var_map;
 	vm_prot_t prot;
-	vm_prot_t fault_type = fault_typea;
+	vm_prot_t fault_type;
 	vm_object_t eobject;
 	vm_size_t size;
 	struct ucred *cred;
@@ -4731,7 +4731,7 @@
 		    vm_map_growstack(map, vaddr, entry) == KERN_SUCCESS)
 			goto RetryLookupLocked;
 	}
-	fault_type &= VM_PROT_READ | VM_PROT_WRITE | VM_PROT_EXECUTE;
+	fault_type = fault_typea & VM_PROT_ALL;
 	if ((fault_type & prot) != fault_type || prot == VM_PROT_NONE) {
 		vm_map_unlock_read(map);
 		return (KERN_PROTECTION_FAILURE);