From fe6320b468b1d2edc9cfb4ed60f975a4c1ff3e62 Mon Sep 17 00:00:00 2001
From: Kip Macy <kmacy@FreeBSD.org>
Date: Sat, 13 Dec 2008 20:18:05 +0000
Subject: [PATCH] radix node head lock needs to be held when calling
 rnh_addaddr

---
 sys/netinet/ip_fw2.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sys/netinet/ip_fw2.c b/sys/netinet/ip_fw2.c
index 826be2bdcfb..5d5da9f803d 100644
--- a/sys/netinet/ip_fw2.c
+++ b/sys/netinet/ip_fw2.c
@@ -1826,7 +1826,9 @@ add_table_entry(struct ip_fw_chain *ch, uint16_t tbl, in_addr_t addr,
 	ent->mask.sin_addr.s_addr = htonl(mlen ? ~((1 << (32 - mlen)) - 1) : 0);
 	ent->addr.sin_addr.s_addr = addr & ent->mask.sin_addr.s_addr;
 	IPFW_WLOCK(ch);
+	RADIX_NODE_HEAD_LOCK(rnh);
 	if (rnh->rnh_addaddr(&ent->addr, &ent->mask, rnh, (void *)ent) ==
+	RADIX_NODE_HEAD_UNLOCK(rnh);
 	    NULL) {
 		IPFW_WUNLOCK(ch);
 		free(ent, M_IPFW_TBL);