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From: John Baldwin <jhb@FreeBSD.org>
Date: Tue, 7 Feb 2012 22:13:54 +0000 (UTC)
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Subject: svn commit: r231166 - stable/8/sys/netinet6
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Author: jhb
Date: Tue Feb  7 22:13:54 2012
New Revision: 231166
URL: http://svn.freebsd.org/changeset/base/231166

Log:
  MFC 229465: Use correct locking when traversing interface address list.

Modified:
  stable/8/sys/netinet6/in6.c
Directory Properties:
  stable/8/sys/   (props changed)
  stable/8/sys/amd64/include/xen/   (props changed)
  stable/8/sys/cddl/contrib/opensolaris/   (props changed)
  stable/8/sys/contrib/dev/acpica/   (props changed)
  stable/8/sys/contrib/pf/   (props changed)
  stable/8/sys/dev/e1000/   (props changed)

Modified: stable/8/sys/netinet6/in6.c
==============================================================================
--- stable/8/sys/netinet6/in6.c	Tue Feb  7 22:13:38 2012	(r231165)
+++ stable/8/sys/netinet6/in6.c	Tue Feb  7 22:13:54 2012	(r231166)
@@ -2128,9 +2128,7 @@ in6_ifawithifp(struct ifnet *ifp, struct
 		IF_ADDR_UNLOCK(ifp);
 		return (besta);
 	}
-	IF_ADDR_UNLOCK(ifp);
 
-	IN6_IFADDR_RLOCK();
 	TAILQ_FOREACH(ifa, &ifp->if_addrhead, ifa_link) {
 		if (ifa->ifa_addr->sa_family != AF_INET6)
 			continue;
@@ -2148,10 +2146,10 @@ in6_ifawithifp(struct ifnet *ifp, struct
 
 		if (ifa != NULL)
 			ifa_ref(ifa);
-		IN6_IFADDR_RUNLOCK();
+		IF_ADDR_UNLOCK(ifp);
 		return (struct in6_ifaddr *)ifa;
 	}
-	IN6_IFADDR_RUNLOCK();
+	IF_ADDR_UNLOCK(ifp);
 
 	/* use the last-resort values, that are, deprecated addresses */
 	if (dep[0])