From owner-freebsd-current@FreeBSD.ORG  Wed Mar 31 14:50:03 2004
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: freebsd-current@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id 6541016A4CF
	for <current@FreeBSD.org>; Wed, 31 Mar 2004 14:50:03 -0800 (PST)
Received: from mail4.speakeasy.net (mail4.speakeasy.net [216.254.0.204])
	by mx1.FreeBSD.org (Postfix) with ESMTP id 015A943D46
	for <current@FreeBSD.org>; Wed, 31 Mar 2004 14:50:03 -0800 (PST)
	(envelope-from jhb@FreeBSD.org)
Received: (qmail 13267 invoked from network); 31 Mar 2004 22:50:01 -0000
Received: from dsl027-160-063.atl1.dsl.speakeasy.net (HELO server.baldwin.cx)
	([216.27.160.63])          (envelope-sender <jhb@FreeBSD.org>)
	encrypted SMTP
	for <wpaul@FreeBSD.org>; 31 Mar 2004 22:50:01 -0000
Received: from 10.50.40.205 (gw1.twc.weather.com [216.133.140.1])
	by server.baldwin.cx (8.12.10/8.12.10) with ESMTP id i2VMnXDI049336;
	Wed, 31 Mar 2004 17:49:54 -0500 (EST)
	(envelope-from jhb@FreeBSD.org)
From: John Baldwin <jhb@FreeBSD.org>
To: Lukas Ertl <le@FreeBSD.org>
Date: Wed, 31 Mar 2004 17:48:31 -0500
User-Agent: KMail/1.6
References: <20040330200924.Y641@korben> <200403301907.06346.jhb@FreeBSD.org>
	<20040331225713.H652@korben>
In-Reply-To: <20040331225713.H652@korben>
MIME-Version: 1.0
Content-Disposition: inline
Content-Type: text/plain;
  charset="iso-8859-1"
Content-Transfer-Encoding: 7bit
Message-Id: <200403311748.31702.jhb@FreeBSD.org>
X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on server.baldwin.cx
cc: wpaul@FreeBSD.org
cc: freebsd-current@FreeBSD.org
cc: current@FreeBSD.org
Subject: Re: if_ndis related panic in propagate_priority
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.1
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: Wed, 31 Mar 2004 22:50:03 -0000

On Wednesday 31 March 2004 03:57 pm, Lukas Ertl wrote:
> On Tue, 30 Mar 2004, John Baldwin wrote:
> > On Tuesday 30 March 2004 01:14 pm, Lukas Ertl wrote:
> > > Hi,
> > >
> > > lately I'm seeing random panics when loading the if_ndis module,
> > > sometimes right after loading it, sometimes quite some time later.
> >
> > Do you have invariants on?
>
> No, no INVARIANTS, no WITNESS.

Ok, well, if a thread sleeps while holding a lock then you can get this panic, 
and INVARIANTS and WITNESS catch those acts with a more informative message.
I would recommend at least enabling INVARIANTS.

-- 
John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org