From 6cbbe26f98d65e9da145a865217ea77dab5407bc Mon Sep 17 00:00:00 2001
From: Bruce M Simpson <bms@FreeBSD.org>
Date: Sun, 13 Sep 2009 01:00:24 +0000
Subject: [PATCH] In expire_mfc(), add an assert on the multicast forwarding
 cache mutex.

PR:		138666
---
 sys/netinet/ip_mroute.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/netinet/ip_mroute.c b/sys/netinet/ip_mroute.c
index 39c71b06c06..f074fea9b0b 100644
--- a/sys/netinet/ip_mroute.c
+++ b/sys/netinet/ip_mroute.c
@@ -1025,6 +1025,8 @@ expire_mfc(struct mfc *rt)
 {
 	struct rtdetq *rte, *nrte;
 
+	MFC_LOCK_ASSERT();
+
 	free_bw_list(rt->mfc_bw_meter);
 
 	TAILQ_FOREACH_SAFE(rte, &rt->mfc_stall, rte_link, nrte) {