From owner-svn-src-stable-8@FreeBSD.ORG  Fri Aug 19 13:41:00 2011
Return-Path: <owner-svn-src-stable-8@FreeBSD.ORG>
Delivered-To: svn-src-stable-8@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 668931065672;
	Fri, 19 Aug 2011 13:41:00 +0000 (UTC)
	(envelope-from vanhu@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id 55B2D8FC21;
	Fri, 19 Aug 2011 13:41:00 +0000 (UTC)
Received: from svn.freebsd.org (localhost [127.0.0.1])
	by svn.freebsd.org (8.14.4/8.14.4) with ESMTP id p7JDf09w005973;
	Fri, 19 Aug 2011 13:41:00 GMT (envelope-from vanhu@svn.freebsd.org)
Received: (from vanhu@localhost)
	by svn.freebsd.org (8.14.4/8.14.4/Submit) id p7JDf0ph005971;
	Fri, 19 Aug 2011 13:41:00 GMT (envelope-from vanhu@svn.freebsd.org)
Message-Id: <201108191341.p7JDf0ph005971@svn.freebsd.org>
From: VANHULLEBUS Yvan <vanhu@FreeBSD.org>
Date: Fri, 19 Aug 2011 13:41:00 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
	svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org
X-SVN-Group: stable-8
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
Cc: 
Subject: svn commit: r225011 - stable/8/sys/netipsec
X-BeenThere: svn-src-stable-8@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: SVN commit messages for only the 8-stable src tree
	<svn-src-stable-8.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-stable-8>, 
	<mailto:svn-src-stable-8-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-stable-8>
List-Post: <mailto:svn-src-stable-8@freebsd.org>
List-Help: <mailto:svn-src-stable-8-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-stable-8>, 
	<mailto:svn-src-stable-8-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 19 Aug 2011 13:41:00 -0000

Author: vanhu
Date: Fri Aug 19 13:41:00 2011
New Revision: 225011
URL: http://svn.freebsd.org/changeset/base/225011

Log:
  MFC:
  fixed two race conditions when inserting/removing SAs via PFKey,
  which can both lead to a kernel panic when adding/removing quickly
  a lot of SAs.
  
  Obtained from:	NETASQ

Modified:
  stable/8/sys/netipsec/key.c
Directory Properties:
  stable/8/sys/   (props changed)

Modified: stable/8/sys/netipsec/key.c
==============================================================================
--- stable/8/sys/netipsec/key.c	Fri Aug 19 13:34:05 2011	(r225010)
+++ stable/8/sys/netipsec/key.c	Fri Aug 19 13:41:00 2011	(r225011)
@@ -2866,9 +2866,10 @@ key_newsav(m, mhp, sah, errp, where, tag
 	sa_initref(newsav);
 	newsav->state = SADB_SASTATE_LARVAL;
 
-	/* XXX locking??? */
+	SAHTREE_LOCK();
 	LIST_INSERT_TAIL(&sah->savtree[SADB_SASTATE_LARVAL], newsav,
 			secasvar, chain);
+	SAHTREE_UNLOCK();
 done:
 	KEYDEBUG(KEYDEBUG_IPSEC_STAMP,
 		printf("DP %s from %s:%u return SP:%p\n", __func__,
@@ -5712,8 +5713,8 @@ key_delete(so, m, mhp)
 	}
 
 	key_sa_chgstate(sav, SADB_SASTATE_DEAD);
-	SAHTREE_UNLOCK();
 	KEY_FREESAV(&sav);
+	SAHTREE_UNLOCK();
 
     {
 	struct mbuf *n;