[src/netbsd-8]: src/sys/netinet6 Pull up following revision(s) (requested by ...

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

details:   https://anonhg.NetBSD.org/src/rev/b289ba89d08b
branches:  netbsd-8
changeset: 985356:b289ba89d08b
user:      martin <martin%NetBSD.org@localhost>
date:      Fri Aug 20 19:34:49 2021 +0000

description:
Pull up following revision(s) (requested by ozaki-r in ticket #1692):

        sys/netinet6/nd6.c: revision 1.277

nd6: prevent ln from being freed while releasing held packets

diffstat:

 sys/netinet6/nd6.c |  6 ++++--
 1 files changed, 4 insertions(+), 2 deletions(-)

diffs (34 lines):

diff -r de60daed3e3b -r b289ba89d08b sys/netinet6/nd6.c
--- a/sys/netinet6/nd6.c        Sun Aug 15 10:04:53 2021 +0000
+++ b/sys/netinet6/nd6.c        Fri Aug 20 19:34:49 2021 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: nd6.c,v 1.232.2.13 2019/09/30 15:48:45 martin Exp $    */
+/*     $NetBSD: nd6.c,v 1.232.2.14 2021/08/20 19:34:49 martin Exp $    */
 /*     $KAME: nd6.c,v 1.279 2002/06/08 11:16:51 itojun Exp $   */
 
 /*
@@ -31,7 +31,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: nd6.c,v 1.232.2.13 2019/09/30 15:48:45 martin Exp $");
+__KERNEL_RCSID(0, "$NetBSD: nd6.c,v 1.232.2.14 2021/08/20 19:34:49 martin Exp $");
 
 #ifdef _KERNEL_OPT
 #include "opt_net_mpsafe.h"
@@ -2014,6 +2014,7 @@
 
        m_hold = ln->la_hold, ln->la_hold = NULL, ln->la_numheld = 0;
 
+       LLE_ADDREF(ln);
        LLE_WUNLOCK(ln);
        for (; m_hold != NULL; m_hold = m_hold_next) {
                m_hold_next = m_hold->m_nextpkt;
@@ -2027,6 +2028,7 @@
                ip6_if_output(ifp, ifp, m_hold, &sin6, NULL);
        }
        LLE_WLOCK(ln);
+       LLE_REMREF(ln);
 }
 
 /*