From owner-freebsd-current@FreeBSD.ORG  Sat Aug 25 23:30:08 2007
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 6ECCB16A417
	for <freebsd-current@freebsd.org>; Sat, 25 Aug 2007 23:30:08 +0000 (UTC)
	(envelope-from des@des.no)
Received: from tim.des.no (tim.des.no [194.63.250.121])
	by mx1.freebsd.org (Postfix) with ESMTP id 2F92613C45A
	for <freebsd-current@freebsd.org>; Sat, 25 Aug 2007 23:30:08 +0000 (UTC)
	(envelope-from des@des.no)
Received: from tim.des.no (localhost [127.0.0.1])
	by spam.des.no (Postfix) with ESMTP id 89DFF2085;
	Sun, 26 Aug 2007 01:30:02 +0200 (CEST)
X-Spam-Tests: AWL
X-Spam-Learn: disabled
X-Spam-Score: 0.0/3.0
X-Spam-Checker-Version: SpamAssassin 3.2.1 (2007-05-02) on tim.des.no
Received: from ds4.des.no (des.no [80.203.243.180])
	by smtp.des.no (Postfix) with ESMTP id 55D652084;
	Sun, 26 Aug 2007 01:30:02 +0200 (CEST)
Received: by ds4.des.no (Postfix, from userid 1001)
	id 26E2B84468; Sun, 26 Aug 2007 01:30:02 +0200 (CEST)
From: =?utf-8?Q?Dag-Erling_Sm=C3=B8rgrav?= <des@des.no>
To: Harald Schmalzbauer <h.schmalzbauer@omnisec.de>
References: <200708231028.07743.h.schmalzbauer@omnisec.de>
	<86r6lu1rms.fsf@ds4.des.no>
	<200708252220.27373.h.schmalzbauer@omnisec.de>
	<200708252233.30392.h.schmalzbauer@omnisec.de>
Date: Sun, 26 Aug 2007 01:30:01 +0200
In-Reply-To: <200708252233.30392.h.schmalzbauer@omnisec.de> (Harald
	Schmalzbauer's message of "Sat\, 25 Aug 2007 22\:33\:28 +0200")
Message-ID: <86zm0fkxae.fsf@ds4.des.no>
User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/22.1 (berkeley-unix)
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: quoted-printable
Cc: freebsd-current@freebsd.org
Subject: Re: ichwd and teethless watchdogd
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Sat, 25 Aug 2007 23:30:08 -0000

Harald Schmalzbauer <h.schmalzbauer@omnisec.de> writes:
> I thought I was sure that I checked the bios setting and wd timer was
> set to on, but maybe after the laste BIOS update it was reset to off.
> Problem solved, the box reboots whe sigkilling watchdogd.

Interesting, if your BIOS can disable the WDT without the driver
noticing, it must mean that it implements an SMI handler that resets (or
perhaps stops) the WDT when it expires.  AFAIK there is no (documented)
way to either detect or prevent this.

DES
--=20
Dag-Erling Sm=C3=B8rgrav - des@des.no