[src/trunk]: src/sys/net in ether_ifdetach(), clear if_mowner before releasin...

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

details:   https://anonhg.NetBSD.org/src/rev/1a90146045ac
branches:  trunk
changeset: 779216:1a90146045ac
user:      chs <chs%NetBSD.org@localhost>
date:      Fri May 11 04:05:54 2012 +0000

description:
in ether_ifdetach(), clear if_mowner before releasing what it points to.
fixes PR 42982.

diffstat:

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

diffs (26 lines):

diff -r 5b9f1fcf76e8 -r 1a90146045ac sys/net/if_ethersubr.c
--- a/sys/net/if_ethersubr.c    Thu May 10 19:53:26 2012 +0000
+++ b/sys/net/if_ethersubr.c    Fri May 11 04:05:54 2012 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: if_ethersubr.c,v 1.188 2011/06/16 19:47:30 kefren Exp $        */
+/*     $NetBSD: if_ethersubr.c,v 1.189 2012/05/11 04:05:54 chs Exp $   */
 
 /*
  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -61,7 +61,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: if_ethersubr.c,v 1.188 2011/06/16 19:47:30 kefren Exp $");
+__KERNEL_RCSID(0, "$NetBSD: if_ethersubr.c,v 1.189 2012/05/11 04:05:54 chs Exp $");
 
 #include "opt_inet.h"
 #include "opt_atalk.h"
@@ -1168,6 +1168,7 @@
        if_free_sadl(ifp);
 #endif
 
+       ifp->if_mowner = NULL;
        MOWNER_DETACH(&ec->ec_rx_mowner);
        MOWNER_DETACH(&ec->ec_tx_mowner);
 }