[src/trunk]: src/sys/netinet6 Bail out in case m_pulldown failed.

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

details:   https://anonhg.NetBSD.org/src/rev/1ce158f693c6
branches:  trunk
changeset: 326847:1ce158f693c6
user:      joerg <joerg%NetBSD.org@localhost>
date:      Thu Feb 20 13:36:06 2014 +0000

description:
Bail out in case m_pulldown failed.

diffstat:

 sys/netinet6/icmp6.c |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (27 lines):

diff -r eab71dd56225 -r 1ce158f693c6 sys/netinet6/icmp6.c
--- a/sys/netinet6/icmp6.c      Thu Feb 20 11:08:57 2014 +0000
+++ b/sys/netinet6/icmp6.c      Thu Feb 20 13:36:06 2014 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: icmp6.c,v 1.163 2013/11/23 14:20:22 christos Exp $     */
+/*     $NetBSD: icmp6.c,v 1.164 2014/02/20 13:36:06 joerg Exp $        */
 /*     $KAME: icmp6.c,v 1.217 2001/06/20 15:03:29 jinmei Exp $ */
 
 /*
@@ -62,7 +62,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: icmp6.c,v 1.163 2013/11/23 14:20:22 christos Exp $");
+__KERNEL_RCSID(0, "$NetBSD: icmp6.c,v 1.164 2014/02/20 13:36:06 joerg Exp $");
 
 #include "opt_inet.h"
 #include "opt_ipsec.h"
@@ -630,6 +630,8 @@
                }
                IP6_EXTHDR_GET(nicmp6, struct icmp6_hdr *, n, off,
                    sizeof(*nicmp6));
+               if (nicmp6 == NULL)
+                       goto freeit;
                nicmp6->icmp6_type = ICMP6_ECHO_REPLY;
                nicmp6->icmp6_code = 0;
                if (n) {