[src/netbsd-6]: src/sys/dev/pci Pull up following revision(s) (requested by m...

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

details:   https://anonhg.NetBSD.org/src/rev/8c0200555448
branches:  netbsd-6
changeset: 777212:8c0200555448
user:      snj <snj%NetBSD.org@localhost>
date:      Fri Aug 18 15:00:53 2017 +0000

description:
Pull up following revision(s) (requested by mrg in ticket #1474):
        sys/dev/pci/if_et.c: revision 1.15
Check for MCLGET failure in et_newbuf.
>From Ilja Van Sprundel.

diffstat:

 sys/dev/pci/if_et.c |  8 ++++++--
 1 files changed, 6 insertions(+), 2 deletions(-)

diffs (29 lines):

diff -r 7a9371f56822 -r 8c0200555448 sys/dev/pci/if_et.c
--- a/sys/dev/pci/if_et.c       Fri Aug 18 14:58:15 2017 +0000
+++ b/sys/dev/pci/if_et.c       Fri Aug 18 15:00:53 2017 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_et.c,v 1.3.2.1 2012/11/19 18:41:59 riz Exp $        */
+/*     $NetBSD: if_et.c,v 1.3.2.2 2017/08/18 15:00:53 snj Exp $        */
 /*     $OpenBSD: if_et.c,v 1.11 2008/06/08 06:18:07 jsg Exp $  */
 /*
  * Copyright (c) 2007 The DragonFly Project.  All rights reserved.
@@ -37,7 +37,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_et.c,v 1.3.2.1 2012/11/19 18:41:59 riz Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_et.c,v 1.3.2.2 2017/08/18 15:00:53 snj Exp $");
 
 #include "opt_inet.h"
 #include "vlan.h"
@@ -2048,6 +2048,10 @@
                if (m == NULL)
                        return (ENOBUFS);
                MCLGET(m, init ? M_WAITOK : M_DONTWAIT);
+               if ((m->m_flags & M_EXT) == 0) {
+                       m_freem(m);
+                       return (ENOBUFS);
+               }
                len = MCLBYTES;
        } else {
                MGETHDR(m, init ? M_WAITOK : M_DONTWAIT, MT_DATA);