[src/trunk]: src/sys/arch/usermode/usermode Check if we pee'd outside the box!

[reinoud <reinoud%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/25d35c64427e
branches:  trunk
changeset: 768707:25d35c64427e
user:      reinoud <reinoud%NetBSD.org@localhost>
date:      Thu Aug 25 15:02:54 2011 +0000

description:
Check if we pee'd outside the box!

diffstat:

 sys/arch/usermode/usermode/trap.c |  7 +++++--
 1 files changed, 5 insertions(+), 2 deletions(-)

diffs (28 lines):

diff -r bbaa8390cd5d -r 25d35c64427e sys/arch/usermode/usermode/trap.c
--- a/sys/arch/usermode/usermode/trap.c Thu Aug 25 14:55:36 2011 +0000
+++ b/sys/arch/usermode/usermode/trap.c Thu Aug 25 15:02:54 2011 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: trap.c,v 1.4 2011/08/25 14:38:56 reinoud Exp $ */
+/* $NetBSD: trap.c,v 1.5 2011/08/25 15:02:54 reinoud Exp $ */
 
 /*-
  * Copyright (c) 2011 Reinoud Zandijk <reinoud%netbsd.org@localhost>
@@ -27,7 +27,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.4 2011/08/25 14:38:56 reinoud Exp $");
+__KERNEL_RCSID(0, "$NetBSD: trap.c,v 1.5 2011/08/25 15:02:54 reinoud Exp $");
 
 #include <sys/types.h>
 #include <sys/param.h>
@@ -125,6 +125,9 @@
                        kmem = 0;
                        vm_map = &vm->vm_map;
                }
+               if ((va < VM_MIN_ADDRESS) || (va > VM_MAX_ADDRESS)) {
+                       panic("peeing outside the box!");
+               }
 
                pcb->pcb_onfault = NULL;
                /* XXX atype?? */