Re: [PANIC] _rw_rlock (radix node head): wlock already held _at_ /usr/src/sys/net/route.c:291

> I upgraded to CURRENT Dec 12 11pm and get this panic when ifconfig tries to 
> add an ipv6 route.

I've gotten similar panics and am currently using the enclosed patch.

- Tor Egge

Index: sys/netinet/in_rmx.c
===================================================================
RCS file: /home/ncvs/src/sys/netinet/in_rmx.c,v
retrieving revision 1.65
diff -u -r1.65 in_rmx.c
--- sys/netinet/in_rmx.c	2 Dec 2008 21:37:28 -0000	1.65
+++ sys/netinet/in_rmx.c	13 Dec 2008 15:43:33 -0000
_at__at_ -115,7 +115,7 _at__at_
 		 * ARP entry and delete it if so.
 		 */
 		rt2 = in_rtalloc1((struct sockaddr *)sin, 0,
-		    RTF_CLONING, rt->rt_fibnum);
+		    RTF_CLONING | RTF_RNH_LOCKED, rt->rt_fibnum);
 		if (rt2) {
 			if (rt2->rt_flags & RTF_LLINFO &&
 			    rt2->rt_flags & RTF_HOST &&
Index: sys/netinet6/in6_rmx.c
===================================================================
RCS file: /home/ncvs/src/sys/netinet6/in6_rmx.c,v
retrieving revision 1.31
diff -u -r1.31 in6_rmx.c
--- sys/netinet6/in6_rmx.c	8 Dec 2008 00:28:21 -0000	1.31
+++ sys/netinet6/in6_rmx.c	13 Dec 2008 19:51:18 -0000
_at__at_ -160,7 +160,8 _at__at_
 		 * Find out if it is because of an
 		 * ARP entry and delete it if so.
 		 */
-		rt2 = rtalloc1((struct sockaddr *)sin6, 0, RTF_CLONING);
+		rt2 = rtalloc1((struct sockaddr *)sin6, 0,
+			       RTF_CLONING | RTF_RNH_LOCKED);
 		if (rt2) {
 			if (rt2->rt_flags & RTF_LLINFO &&
 				rt2->rt_flags & RTF_HOST &&
_at__at_ -187,7 +188,8 _at__at_
 		 *	net route entry, 3ffe:0501:: -> if0.
 		 *	This case should not raise an error.
 		 */
-		rt2 = rtalloc1((struct sockaddr *)sin6, 0, RTF_CLONING);
+		rt2 = rtalloc1((struct sockaddr *)sin6, 0,
+			       RTF_CLONING | RTF_RNH_LOCKED);
 		if (rt2) {
 			if ((rt2->rt_flags & (RTF_CLONING|RTF_HOST|RTF_GATEWAY))
 					== RTF_CLONING