From owner-svn-src-all@FreeBSD.ORG  Tue Oct 22 21:47:35 2013
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 ESMTP id 2FEE4E1A;
 Tue, 22 Oct 2013 21:47:35 +0000 (UTC)
 (envelope-from cognet@FreeBSD.org)
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))
 (No client certificate requested)
 by mx1.freebsd.org (Postfix) with ESMTPS id 1CE872ADD;
 Tue, 22 Oct 2013 21:47:35 +0000 (UTC)
Received: from svn.freebsd.org ([127.0.1.70])
 by svn.freebsd.org (8.14.7/8.14.7) with ESMTP id r9MLlYLL063532;
 Tue, 22 Oct 2013 21:47:34 GMT (envelope-from cognet@svn.freebsd.org)
Received: (from cognet@localhost)
 by svn.freebsd.org (8.14.7/8.14.5/Submit) id r9MLlYw0063531;
 Tue, 22 Oct 2013 21:47:34 GMT (envelope-from cognet@svn.freebsd.org)
Message-Id: <201310222147.r9MLlYw0063531@svn.freebsd.org>
From: Olivier Houchard <cognet@FreeBSD.org>
Date: Tue, 22 Oct 2013 21:47:34 +0000 (UTC)
To: src-committers@freebsd.org, svn-src-all@freebsd.org,
 svn-src-head@freebsd.org
Subject: svn commit: r256941 - head/sys/arm/arm
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: 2.1.14
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: Tue, 22 Oct 2013 21:47:35 -0000

Author: cognet
Date: Tue Oct 22 21:47:34 2013
New Revision: 256941
URL: http://svnweb.freebsd.org/changeset/base/256941

Log:
  Try to make sure the frame is indeed in the kernel memory.

Modified:
  head/sys/arm/arm/stack_machdep.c

Modified: head/sys/arm/arm/stack_machdep.c
==============================================================================
--- head/sys/arm/arm/stack_machdep.c	Tue Oct 22 21:32:28 2013	(r256940)
+++ head/sys/arm/arm/stack_machdep.c	Tue Oct 22 21:47:34 2013	(r256941)
@@ -43,13 +43,16 @@ __FBSDID("$FreeBSD$");
  * APCS where it lays out the stack incorrectly. Because of this we disable
  * this when building for ARM EABI or when building with clang.
  */
+
+extern vm_offset_t kernel_vm_end;
+
 static void
 stack_capture(struct stack *st, u_int32_t *frame)
 {
 #if !defined(__ARM_EABI__) && !defined(__clang__)
 	vm_offset_t callpc;
 
-	while (INKERNEL(frame)) {
+	while (INKERNEL(frame) && (vm_offset_t)frame < kernel_vm_end) {
 		callpc = frame[FR_SCP];
 		if (stack_put(st, callpc) == -1)
 			break;