[src/trunk]: src/sys/arch/usermode/dev fix range check for mmap

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

details:   https://anonhg.NetBSD.org/src/rev/a4f128528979
branches:  trunk
changeset: 772398:a4f128528979
user:      jmcneill <jmcneill%NetBSD.org@localhost>
date:      Mon Jan 02 00:20:30 2012 +0000

description:
fix range check for mmap

diffstat:

 sys/arch/usermode/dev/vncfb.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r 8162a749c2fa -r a4f128528979 sys/arch/usermode/dev/vncfb.c
--- a/sys/arch/usermode/dev/vncfb.c     Sun Jan 01 23:42:03 2012 +0000
+++ b/sys/arch/usermode/dev/vncfb.c     Mon Jan 02 00:20:30 2012 +0000
@@ -1,4 +1,4 @@
-/* $NetBSD: vncfb.c,v 1.10 2011/12/30 20:08:36 jmcneill Exp $ */
+/* $NetBSD: vncfb.c,v 1.11 2012/01/02 00:20:30 jmcneill Exp $ */
 
 /*-
  * Copyright (c) 2011 Jared D. McNeill <jmcneill%invisible.ca@localhost>
@@ -35,7 +35,7 @@
 #include "opt_wsemul.h"
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: vncfb.c,v 1.10 2011/12/30 20:08:36 jmcneill Exp $");
+__KERNEL_RCSID(0, "$NetBSD: vncfb.c,v 1.11 2012/01/02 00:20:30 jmcneill Exp $");
 
 #include <sys/param.h>
 #include <sys/systm.h>
@@ -507,7 +507,7 @@
        paddr_t pa;
        vaddr_t va;
 
-       if (offset < 0 || offset + PAGE_SIZE > sc->sc_framebufsize) {
+       if (offset < 0 || offset >= sc->sc_framebufsize) {
                device_printf(sc->sc_dev, "mmap: offset 0x%x, fbsize 0x%x"
                    " out of range!\n",
                    (unsigned int)offset, (unsigned int)sc->sc_framebufsize);