From owner-freebsd-current@FreeBSD.ORG  Fri Jun 27 08:30:08 2008
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
Delivered-To: current@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 05D561065675;
	Fri, 27 Jun 2008 08:30:08 +0000 (UTC)
	(envelope-from rea-fbsd@codelabs.ru)
Received: from 0.mx.codelabs.ru (0.mx.codelabs.ru [144.206.177.45])
	by mx1.freebsd.org (Postfix) with ESMTP id B41BC8FC0C;
	Fri, 27 Jun 2008 08:30:07 +0000 (UTC)
	(envelope-from rea-fbsd@codelabs.ru)
DomainKey-Signature: a=rsa-sha1; q=dns; c=simple; s=one; d=codelabs.ru;
	h=Received:Date:From:To:Cc:Subject:Message-ID:References:MIME-Version:Content-Type:Content-Disposition:In-Reply-To:Sender;
	b=O7JtHpJYJCeDh/1kcCoQH5SC66gmVEWKm7Gq3Jmb47j0CO5P12+4ATgtacCJdwjXnohG4jVXzB+zCihjob8FbWk9f+zSfGxtQg1KCM30vM+bwUbOcUKZhxDxCwqn9BDpkNOZU7lh8H6a3SFM30TBtoslwi69QAp6r3pUA3TsxRA=;
Received: from void.codelabs.ru (void.codelabs.ru [144.206.177.25])
	by 0.mx.codelabs.ru with esmtpsa (TLSv1:AES256-SHA:256)
	id 1KC9LK-000Ck4-6F; Fri, 27 Jun 2008 12:30:06 +0400
Date: Fri, 27 Jun 2008 12:30:04 +0400
From: Eygene Ryabinkin <rea-fbsd@codelabs.ru>
To: John Baldwin <jhb@freebsd.org>
Message-ID: <u4uXu8ke1W57gMiLvLGjhl//+Rg@uqQrEgtX6U4NMXCt5NDlpXxAUIM>
References: <91492.1214431446@critter.freebsd.dk>
	<20080626122202.O83875@maildrop.int.zabbadoz.net>
	<4K5+lNH1xm4QaKlQAizl2ATEu4I@w17qTvyS5I3zcalA0LVEglQwDKY>
	<200806262019.47095.jhb@freebsd.org>
MIME-Version: 1.0
Content-Type: text/plain; charset=koi8-r
Content-Disposition: inline
In-Reply-To: <200806262019.47095.jhb@freebsd.org>
Sender: rea-fbsd@codelabs.ru
Cc: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net>,
	Poul-Henning Kamp <phk@phk.freebsd.dk>, freebsd-current@freebsd.org,
	Pawel Jakub Dawidek <pjd@freebsd.org>,
	FreeBSD current mailing list <current@freebsd.org>
Subject: Re: panic in geom (spindown + eil + journal)
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: Fri, 27 Jun 2008 08:30:08 -0000

Thu, Jun 26, 2008 at 08:19:46PM -0400, John Baldwin wrote:
> > and when system will panic and debugger will be invoked, issue
> > commands 'p *(bp->bio_offset)' and 'p *(cp->provider)' at the stack
> > frame corresponding to the function g_io_request?
> 
> Note that DDB can't handle structure dereferences like that (nor evaluate 
> symbols for local variables), you'll need to get a crash dump and use kgdb 
> for that sort of thing.

Yes, you're right -- thanks for correcting me.  Bjoern, can you obtain
the crash dump and see what is inside the passed structures?
-- 
Eygene

Remember that it is hard to read the on-line manual while single-stepping
the kernel.  -- FreeBSD Developers handbook