From ebcae94e4fa0a14363989ebb213ca3cd1ff044fc Mon Sep 17 00:00:00 2001
From: Garrett Wollman <wollman@FreeBSD.org>
Date: Wed, 27 Mar 1996 18:23:16 +0000
Subject: [PATCH] In tcp_respond(), check that ro->ro_rt is non-null before
 RTFREEing it.

---
 sys/netinet/tcp_subr.c     | 4 ++--
 sys/netinet/tcp_timewait.c | 4 ++--
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/sys/netinet/tcp_subr.c b/sys/netinet/tcp_subr.c
index 6a1f903013a..87137f4dc62 100644
--- a/sys/netinet/tcp_subr.c
+++ b/sys/netinet/tcp_subr.c
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)tcp_subr.c	8.2 (Berkeley) 5/24/95
- *	$Id: tcp_subr.c,v 1.26 1996/03/11 15:13:33 davidg Exp $
+ *	$Id: tcp_subr.c,v 1.27 1996/03/22 18:11:25 wollman Exp $
  */
 
 #include <sys/param.h>
@@ -236,7 +236,7 @@ tcp_respond(tp, ti, m, ack, seq, flags)
 		tcp_trace(TA_OUTPUT, 0, tp, ti, 0);
 #endif
 	(void) ip_output(m, NULL, ro, 0, NULL);
-	if (ro == &sro) {
+	if (ro == &sro && ro->ro_rt) {
 		RTFREE(ro->ro_rt);
 	}
 }
diff --git a/sys/netinet/tcp_timewait.c b/sys/netinet/tcp_timewait.c
index 6a1f903013a..87137f4dc62 100644
--- a/sys/netinet/tcp_timewait.c
+++ b/sys/netinet/tcp_timewait.c
@@ -31,7 +31,7 @@
  * SUCH DAMAGE.
  *
  *	@(#)tcp_subr.c	8.2 (Berkeley) 5/24/95
- *	$Id: tcp_subr.c,v 1.26 1996/03/11 15:13:33 davidg Exp $
+ *	$Id: tcp_subr.c,v 1.27 1996/03/22 18:11:25 wollman Exp $
  */
 
 #include <sys/param.h>
@@ -236,7 +236,7 @@ tcp_respond(tp, ti, m, ack, seq, flags)
 		tcp_trace(TA_OUTPUT, 0, tp, ti, 0);
 #endif
 	(void) ip_output(m, NULL, ro, 0, NULL);
-	if (ro == &sro) {
+	if (ro == &sro && ro->ro_rt) {
 		RTFREE(ro->ro_rt);
 	}
 }