From owner-freebsd-drivers@FreeBSD.ORG  Fri Jun 25 15:09:42 2010
Return-Path: <owner-freebsd-drivers@FreeBSD.ORG>
Delivered-To: freebsd-drivers@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id DA1AF106566C
	for <freebsd-drivers@freebsd.org>; Fri, 25 Jun 2010 15:09:42 +0000 (UTC)
	(envelope-from jhb@freebsd.org)
Received: from cyrus.watson.org (cyrus.watson.org [65.122.17.42])
	by mx1.freebsd.org (Postfix) with ESMTP id AD3C78FC13
	for <freebsd-drivers@freebsd.org>; Fri, 25 Jun 2010 15:09:42 +0000 (UTC)
Received: from bigwig.baldwin.cx (66.111.2.69.static.nyinternet.net
	[66.111.2.69])
	by cyrus.watson.org (Postfix) with ESMTPSA id 334B246B09;
	Fri, 25 Jun 2010 11:09:42 -0400 (EDT)
Received: from jhbbsd.localnet (smtp.hudson-trading.com [209.249.190.9])
	by bigwig.baldwin.cx (Postfix) with ESMTPSA id 847EC8A03C;
	Fri, 25 Jun 2010 11:09:41 -0400 (EDT)
From: John Baldwin <jhb@freebsd.org>
To: "KGB" <e01630112a@yahoo.com.cn>
Date: Fri, 25 Jun 2010 11:09:21 -0400
User-Agent: KMail/1.12.1 (FreeBSD/7.3-CBSD-20100217; KDE/4.3.1; amd64; ; )
References: <tencent_396C7B805EC70CA730530752@qq.com>
In-Reply-To: <tencent_396C7B805EC70CA730530752@qq.com>
MIME-Version: 1.0
Content-Type: Text/Plain;
  charset="iso-8859-15"
Content-Transfer-Encoding: 7bit
Message-Id: <201006251109.21471.jhb@freebsd.org>
X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.0.1
	(bigwig.baldwin.cx); Fri, 25 Jun 2010 11:09:41 -0400 (EDT)
X-Virus-Scanned: clamav-milter 0.95.1 at bigwig.baldwin.cx
X-Virus-Status: Clean
X-Spam-Status: No, score=-2.6 required=4.2 tests=AWL,BAYES_00 autolearn=ham
	version=3.2.5
X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on bigwig.baldwin.cx
Cc: freebsd-drivers <freebsd-drivers@freebsd.org>
Subject: Re: Kernel panic of "spin lock held too long"
X-BeenThere: freebsd-drivers@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Writing device drivers for FreeBSD <freebsd-drivers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-drivers>, 
	<mailto:freebsd-drivers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-drivers>
List-Post: <mailto:freebsd-drivers@freebsd.org>
List-Help: <mailto:freebsd-drivers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-drivers>,
	<mailto:freebsd-drivers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 25 Jun 2010 15:09:42 -0000

On Friday 25 June 2010 9:56:13 am KGB wrote:
> I met the kernel dump again.The message is below.

Do you use any interrupt handlers?  If so, are you using a filter function?

Also, you can use the 'tid' command in kgdb to switch to a thread via a tid to 
avoid having to search for a 'tid' in info threads.

-- 
John Baldwin