From owner-svn-src-all@FreeBSD.ORG  Sat May 17 02:45:05 2014
Return-Path: <owner-svn-src-all@FreeBSD.ORG>
Delivered-To: svn-src-all@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115])
 (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits))
 (No client certificate requested)
 by hub.freebsd.org (Postfix) with ESMTPS id 74231619;
 Sat, 17 May 2014 02:45:05 +0000 (UTC)
Received: from svn.freebsd.org (svn.freebsd.org
 [IPv6:2001:1900:2254:2068::e6a:0])
 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits))
 (Client did not present a certificate)
 by mx1.freebsd.org (Postfix) with ESMTPS id 61D3622C5;
 Sat, 17 May 2014 02:45:05 +0000 (UTC)
Received: from svn.freebsd.org ([127.0.1.70])
 by svn.freebsd.org (8.14.8/8.14.8) with ESMTP id s4H2j5Gx018050;
 Sat, 17 May 2014 02:45:05 GMT (envelope-from jhb@svn.freebsd.org)
Received: (from jhb@localhost)
 by svn.freebsd.org (8.14.8/8.14.8/Submit) id s4H2j50i018049;
 Sat, 17 May 2014 02:45:05 GMT (envelope-from jhb@svn.freebsd.org)
Message-Id: <201405170245.s4H2j50i018049@svn.freebsd.org>
From: John Baldwin <jhb@FreeBSD.org>
Date: Sat, 17 May 2014 02:45:05 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: svn commit: r266281 - head/sys/dev/aac
X-SVN-Group: head
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit
X-BeenThere: svn-src-all@freebsd.org
X-Mailman-Version: 2.1.18
Precedence: list
List-Id: "SVN commit messages for the entire src tree \(except for &quot;
 user&quot; and &quot; projects&quot; \)" <svn-src-all.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/options/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/svn-src-all/>
List-Post: <mailto:svn-src-all@freebsd.org>
List-Help: <mailto:svn-src-all-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/svn-src-all>,
 <mailto:svn-src-all-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 17 May 2014 02:45:05 -0000

Author: jhb
Date: Sat May 17 02:45:04 2014
New Revision: 266281
URL: http://svnweb.freebsd.org/changeset/base/266281

Log:
  Clear the data buffer length field when freeing a command structure so that
  it doesn't leak through when the command structure is reused for a user
  command without a data buffer.
  
  PR:		amd64/189668
  Tested by:	Pete Long <pete@nrth.org>
  MFC after:	1 week

Modified:
  head/sys/dev/aac/aac.c

Modified: head/sys/dev/aac/aac.c
==============================================================================
--- head/sys/dev/aac/aac.c	Sat May 17 02:39:20 2014	(r266280)
+++ head/sys/dev/aac/aac.c	Sat May 17 02:45:04 2014	(r266281)
@@ -1408,6 +1408,7 @@ aac_release_command(struct aac_command *
 	fwprintf(sc, HBA_FLAGS_DBG_FUNCTION_ENTRY_B, "");
 
 	/* (re)initialize the command/FIB */
+	cm->cm_datalen = 0;
 	cm->cm_sgtable = NULL;
 	cm->cm_flags = 0;
 	cm->cm_complete = NULL;