Index: sys/kern/kern_exec.c
===================================================================
--- sys/kern/kern_exec.c
+++ sys/kern/kern_exec.c
@@ -1096,7 +1096,7 @@
 	 * are still used to enforce the stack rlimit on the process stack.
 	 */
 	vmspace->vm_ssize = sgrowsiz >> PAGE_SHIFT;
-	vmspace->vm_maxsaddr = (char *)sv->sv_usrstack - ssiz;
+	vmspace->vm_maxsaddr = (char *)stack_addr;
 
 	return (0);
 }