diff -Nuar xnu-792.2.4.orig/bsd/kern/kern_xxx.c xnu-792.2.4/bsd/kern/kern_xxx.c
--- xnu-792.2.4.orig/bsd/kern/kern_xxx.c	2005-07-12 14:36:55.000000000 -0700
+++ xnu-792.2.4/bsd/kern/kern_xxx.c	2005-10-17 13:29:55.000000000 -0700
@@ -96,3 +96,12 @@
 	return(error);
 }
 
+void __stack_smash_handler(char [], int __attribute__((unused)));
+
+long	__guard[8] = {0,0,0,0,0,0,0,0} ;
+
+void
+__stack_smash_handler(char func[], int damaged)
+{
+	panic("smashed stack in %s", func);
+}