From owner-freebsd-alpha  Mon Feb 17  6:12: 9 2003
Delivered-To: freebsd-alpha@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id BE46737B401; Mon, 17 Feb 2003 06:12:08 -0800 (PST)
Received: from duke.cs.duke.edu (duke.cs.duke.edu [152.3.140.1])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id 1199543F75; Mon, 17 Feb 2003 06:12:08 -0800 (PST)
	(envelope-from gallatin@cs.duke.edu)
Received: from grasshopper.cs.duke.edu (grasshopper.cs.duke.edu [152.3.145.30])
	by duke.cs.duke.edu (8.12.6/8.12.6) with ESMTP id h1HEC78I017571
	(version=TLSv1/SSLv3 cipher=EDH-RSA-DES-CBC3-SHA bits=168 verify=NO);
	Mon, 17 Feb 2003 09:12:07 -0500 (EST)
Received: (from gallatin@localhost)
	by grasshopper.cs.duke.edu (8.11.6/8.9.1) id h1HEC2K42899;
	Mon, 17 Feb 2003 09:12:02 -0500 (EST)
	(envelope-from gallatin@cs.duke.edu)
From: Andrew Gallatin <gallatin@cs.duke.edu>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Transfer-Encoding: 7bit
Message-ID: <15952.60850.445423.454870@grasshopper.cs.duke.edu>
Date: Mon, 17 Feb 2003 09:12:02 -0500 (EST)
To: Dag-Erling Smorgrav <des@ofug.org>
Cc: alpha@FreeBSD.ORG, current@FreeBSD.ORG
Subject: Re: top-of-tree alpha kernel panics during boot
In-Reply-To: <xzpfzqn57pi.fsf@flood.ping.uio.no>
References: <xzpn0l0v119.fsf@flood.ping.uio.no>
	<xzpk7fz58r0.fsf@flood.ping.uio.no>
	<xzpfzqn57pi.fsf@flood.ping.uio.no>
X-Mailer: VM 6.75 under 21.1 (patch 12) "Channel Islands" XEmacs Lucid
Sender: owner-freebsd-alpha@FreeBSD.ORG
Precedence: bulk
List-ID: <freebsd-alpha.FreeBSD.ORG>
List-Archive: <http://docs.freebsd.org/mail/> (Web Archive)
List-Help: <mailto:majordomo@FreeBSD.ORG?subject=help> (List Instructions)
List-Subscribe: <mailto:majordomo@FreeBSD.ORG?subject=subscribe%20freebsd-alpha>
List-Unsubscribe: <mailto:majordomo@FreeBSD.ORG?subject=unsubscribe%20freebsd-alpha>
X-Loop: FreeBSD.org


Dag-Erling Smorgrav writes:
 > Dag-Erling Smorgrav <des@ofug.org> writes:
 > > Any suggestions as to how I can figure out who used that block of
 > > memory before it was allocated to the ess driver?
 > 
 > I threw in a call to Debugger(), but...
 > 
 > mtrash_dtor(0xfffffc00007b6000, 8192, 0)
 > here's the culprit!
 > Stopped at      0xfffffc0000577578:     zapnot  v0,#0xf,v0      <v0=0x6>
 > db> trace
 > db> c
 > 
 > no backtrace :(
 > 

Can you look at the registers and match $ra with a line number using
addr2line or gdb?  (sorry, forgot if ddb can even look at registers)

Drew

To Unsubscribe: send mail to majordomo@FreeBSD.org
with "unsubscribe freebsd-alpha" in the body of the message