[src/trunk]: src/sys/kern Cast to int, to properly handle dstoff > MHLEN (whi...

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

details:   https://anonhg.NetBSD.org/src/rev/82005034be90
branches:  trunk
changeset: 322150:82005034be90
user:      maxv <maxv%NetBSD.org@localhost>
date:      Fri Apr 20 06:01:59 2018 +0000

description:
Cast to int, to properly handle dstoff > MHLEN (which never happens).

diffstat:

 sys/kern/uipc_mbuf.c |  6 +++---
 1 files changed, 3 insertions(+), 3 deletions(-)

diffs (27 lines):

diff -r 02ee7b04f559 -r 82005034be90 sys/kern/uipc_mbuf.c
--- a/sys/kern/uipc_mbuf.c      Fri Apr 20 03:03:13 2018 +0000
+++ b/sys/kern/uipc_mbuf.c      Fri Apr 20 06:01:59 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: uipc_mbuf.c,v 1.192 2018/04/19 05:16:02 maxv Exp $     */
+/*     $NetBSD: uipc_mbuf.c,v 1.193 2018/04/20 06:01:59 maxv Exp $     */
 
 /*
  * Copyright (c) 1999, 2001 The NetBSD Foundation, Inc.
@@ -62,7 +62,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: uipc_mbuf.c,v 1.192 2018/04/19 05:16:02 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: uipc_mbuf.c,v 1.193 2018/04/20 06:01:59 maxv Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_mbuftrace.h"
@@ -1112,7 +1112,7 @@
        int count, space;
 
        KASSERT(len != M_COPYALL);
-       if (len > (MHLEN - dstoff))
+       if (len > ((int)MHLEN - dstoff))
                goto bad;
        m = m_get(M_DONTWAIT, n->m_type);
        if (m == NULL)