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authorozaki-r <ozaki-r@NetBSD.org>2021-08-17 09:43:21 +0000
committerozaki-r <ozaki-r@NetBSD.org>2021-08-17 09:43:21 +0000
commit18f462c6fb40a32175647c20b0d0d83d8eb581ac (patch)
treee4b7fd07ffe9f33cc9607cdea10311c0b20ffe88 /sys/netinet6
parented59f49e9fb8cec2fa7a9597f2a31396ed5d052c (diff)
nd6: prevent ln from being freed while releasing held packets
Diffstat (limited to 'sys/netinet6')
-rw-r--r--sys/netinet6/nd6.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/sys/netinet6/nd6.c b/sys/netinet6/nd6.c
index bc4a857a784..8b0e13e7ee3 100644
--- a/sys/netinet6/nd6.c
+++ b/sys/netinet6/nd6.c
@@ -1,4 +1,4 @@
-/* $NetBSD: nd6.c,v 1.276 2020/12/28 20:19:50 nia Exp $ */
+/* $NetBSD: nd6.c,v 1.277 2021/08/17 09:43:21 ozaki-r 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 1.276 2020/12/28 20:19:50 nia Exp $");
+__KERNEL_RCSID(0, "$NetBSD: nd6.c,v 1.277 2021/08/17 09:43:21 ozaki-r Exp $");
#ifdef _KERNEL_OPT
#include "opt_compat_netbsd.h"
@@ -1305,6 +1305,7 @@ nd6_llinfo_release_pkts(struct llentry *ln, struct ifnet *ifp)
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;
@@ -1318,6 +1319,7 @@ nd6_llinfo_release_pkts(struct llentry *ln, struct ifnet *ifp)
ip6_if_output(ifp, ifp, m_hold, &sin6, NULL);
}
LLE_WLOCK(ln);
+ LLE_REMREF(ln);
}
/*