From owner-freebsd-fs@FreeBSD.ORG  Mon Dec  6 20:56:29 2004
Return-Path: <owner-freebsd-fs@FreeBSD.ORG>
Delivered-To: freebsd-fs@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP id BC3F316A4CE
	for <freebsd-fs@freebsd.org>; Mon,  6 Dec 2004 20:56:29 +0000 (GMT)
Received: from freefall.freebsd.org (freefall.freebsd.org [216.136.204.21])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id 934C043D54; Mon,  6 Dec 2004 20:56:29 +0000 (GMT)
	(envelope-from kan@FreeBSD.org)
Received: from freefall.freebsd.org (kan@localhost [127.0.0.1])
	by freefall.freebsd.org (8.13.1/8.13.1) with ESMTP id iB6KuTVK003680;
	Mon, 6 Dec 2004 20:56:29 GMT
	(envelope-from kan@freefall.freebsd.org)
Received: (from kan@localhost)
	by freefall.freebsd.org (8.13.1/8.13.1/Submit) id iB6KuS20003679;
	Mon, 6 Dec 2004 20:56:28 GMT
	(envelope-from kan)
Date: Mon, 6 Dec 2004 20:56:28 +0000
From: Alexander Kabaev <kan@freebsd.org>
To: Thomas Nystrom <thn@saeab.se>
Message-ID: <20041206205628.GA3309@freefall.freebsd.org>
References: <41B0C899.C005AE1E@saeab.se>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <41B0C899.C005AE1E@saeab.se>
User-Agent: Mutt/1.4.2.1i
cc: freebsd-fs@freebsd.org
Subject: Re: Dead vnode locking against itself
X-BeenThere: freebsd-fs@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Filesystems <freebsd-fs.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
	<mailto:freebsd-fs-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-fs>
List-Post: <mailto:freebsd-fs@freebsd.org>
List-Help: <mailto:freebsd-fs-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-fs>,
	<mailto:freebsd-fs-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Mon, 06 Dec 2004 20:56:29 -0000

On Fri, Dec 03, 2004 at 09:12:09PM +0100, Thomas Nystrom wrote:
> 
> If I look at the source I can see that in sys/kern/vfs_subr.c:2696
> (in vgonel) the vnode is locked by VI_XLOCK. Later on (via vclean)
> dead_lock is called and founds that the vnode is locked. It then
> waits for it to be unlocked and the results is a hanged process.
> 
> What have I missed or have I found a bug?
> 
> /thn
> 
I wonder why vclean was called on a vnode with dead_vnodeops in the
first place. Could you please post an output of 'print *vp' for
the vnode being cleaned?

--
Alexander Kabaev