From owner-svn-src-stable-8@FreeBSD.ORG  Mon Dec  7 20:49:49 2009
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 7F8FE1065697;
	Mon,  7 Dec 2009 20:49:49 +0000 (UTC)
	(envelope-from fabient@FreeBSD.org)
Received: from svn.freebsd.org (svn.freebsd.org [IPv6:2001:4f8:fff6::2c])
	by mx1.freebsd.org (Postfix) with ESMTP id 6D6D08FC18;
	Mon,  7 Dec 2009 20:49:49 +0000 (UTC)
Received: from svn.freebsd.org (localhost [127.0.0.1])
	by svn.freebsd.org (8.14.3/8.14.3) with ESMTP id nB7KnnIT065702;
	Mon, 7 Dec 2009 20:49:49 GMT (envelope-from fabient@svn.freebsd.org)
Received: (from fabient@localhost)
	by svn.freebsd.org (8.14.3/8.14.3/Submit) id nB7KnnUY065700;
	Mon, 7 Dec 2009 20:49:49 GMT (envelope-from fabient@svn.freebsd.org)
Message-Id: <200912072049.nB7KnnUY065700@svn.freebsd.org>
From: Fabien Thomas <fabient@FreeBSD.org>
Date: Mon, 7 Dec 2009 20:49:49 +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: r200236 - stable/8/sys/dev/hwpmc
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: Mon, 07 Dec 2009 20:49:49 -0000

Author: fabient
Date: Mon Dec  7 20:49:49 2009
New Revision: 200236
URL: http://svn.freebsd.org/changeset/base/200236

Log:
  MFC 200060:
  Use a better check for a valid kernel stack address when capturing
  kernel call chains.

Modified:
  stable/8/sys/dev/hwpmc/hwpmc_x86.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/xen/xenpci/   (props changed)

Modified: stable/8/sys/dev/hwpmc/hwpmc_x86.c
==============================================================================
--- stable/8/sys/dev/hwpmc/hwpmc_x86.c	Mon Dec  7 20:47:33 2009	(r200235)
+++ stable/8/sys/dev/hwpmc/hwpmc_x86.c	Mon Dec  7 20:49:49 2009	(r200236)
@@ -176,7 +176,8 @@ pmc_save_kernel_callchain(uintptr_t *cc,
 	stackend = (uintptr_t) td->td_kstack + td->td_kstack_pages * PAGE_SIZE;
 
 	if (PMC_IN_TRAP_HANDLER(pc) ||
-	    !PMC_IN_KERNEL(pc) || !PMC_IN_KERNEL(r) ||
+	    !PMC_IN_KERNEL(pc) ||
+	    !PMC_IN_KERNEL_STACK(r, stackstart, stackend) ||
 	    !PMC_IN_KERNEL_STACK(sp, stackstart, stackend) ||
 	    !PMC_IN_KERNEL_STACK(fp, stackstart, stackend))
 		return (1);
@@ -221,7 +222,7 @@ pmc_save_kernel_callchain(uintptr_t *cc,
 
 		r = fp + sizeof(uintptr_t);
 		if (!PMC_IN_KERNEL_STACK(fp, stackstart, stackend) ||
-		    !PMC_IN_KERNEL(r))
+		    !PMC_IN_KERNEL_STACK(r, stackstart, stackend))
 			break;
 		pc = *(uintptr_t *) r;
 		fp = *(uintptr_t *) fp;