[src/trunk]: src/sys/kern assert that uio passed to uiomove() has valid uio_i...

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

details:   https://anonhg.NetBSD.org/src/rev/27728f99cc0c
branches:  trunk
changeset: 551947:27728f99cc0c
user:      yamt <yamt%NetBSD.org@localhost>
date:      Sun Sep 14 11:12:14 2003 +0000

description:
assert that uio passed to uiomove() has valid uio_iovcnt.

diffstat:

 sys/kern/kern_subr.c |  5 +++--
 1 files changed, 3 insertions(+), 2 deletions(-)

diffs (26 lines):

diff -r fe870855fe18 -r 27728f99cc0c sys/kern/kern_subr.c
--- a/sys/kern/kern_subr.c      Sun Sep 14 11:09:48 2003 +0000
+++ b/sys/kern/kern_subr.c      Sun Sep 14 11:12:14 2003 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: kern_subr.c,v 1.104 2003/09/10 10:55:50 yamt Exp $     */
+/*     $NetBSD: kern_subr.c,v 1.105 2003/09/14 11:12:14 yamt Exp $     */
 
 /*-
  * Copyright (c) 1997, 1998, 1999, 2002 The NetBSD Foundation, Inc.
@@ -86,7 +86,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: kern_subr.c,v 1.104 2003/09/10 10:55:50 yamt Exp $");
+__KERNEL_RCSID(0, "$NetBSD: kern_subr.c,v 1.105 2003/09/14 11:12:14 yamt Exp $");
 
 #include "opt_ddb.h"
 #include "opt_md.h"
@@ -155,6 +155,7 @@
                iov = uio->uio_iov;
                cnt = iov->iov_len;
                if (cnt == 0) {
+                       KASSERT(uio->uio_iovcnt > 0);
                        uio->uio_iov++;
                        uio->uio_iovcnt--;
                        continue;