From owner-freebsd-hackers@FreeBSD.ORG  Fri May 30 09:24:41 2003
Return-Path: <owner-freebsd-hackers@FreeBSD.ORG>
Delivered-To: freebsd-hackers@freebsd.org
Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125])
	by hub.freebsd.org (Postfix) with ESMTP
	id 28F2437B401; Fri, 30 May 2003 09:24:41 -0700 (PDT)
Received: from mail.pcnet.com (mail.pcnet.com [204.213.232.4])
	by mx1.FreeBSD.org (Postfix) with ESMTP
	id 726FC43F75; Fri, 30 May 2003 09:24:40 -0700 (PDT)
	(envelope-from eischen@pcnet.com)
Received: from mail.pcnet.com (mail.pcnet.com [204.213.232.4])
	by mail.pcnet.com (8.12.8/8.12.1) with ESMTP id h4UGOdNc006123;
	Fri, 30 May 2003 12:24:39 -0400 (EDT)
Date: Fri, 30 May 2003 12:24:39 -0400 (EDT)
From: Daniel Eischen <eischen@pcnet.com>
To: Enache Adrian <enache@rdslink.ro>
In-Reply-To: <20030530160723.GB872@ratsnest.hole>
Message-ID: <Pine.GSO.4.10.10305301223220.5117-100000@pcnet5.pcnet.com>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII
cc: Daniel Eischen <deischen@freebsd.org>
cc: Sergey Starosek <star@sunbay.com>
cc: hackers@freebsd.org
cc: Yaroslav Levchenko <yarick@sunbay.com>
Subject: Re: libc_r: threaded application could stuck in accept(2)
X-BeenThere: freebsd-hackers@freebsd.org
X-Mailman-Version: 2.1.1
Precedence: list
List-Id: Technical Discussions relating to FreeBSD
	<freebsd-hackers.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-hackers>
List-Post: <mailto:freebsd-hackers@freebsd.org>
List-Help: <mailto:freebsd-hackers-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-hackers>,
	<mailto:freebsd-hackers-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 30 May 2003 16:24:41 -0000

On Fri, 30 May 2003, Enache Adrian wrote:

> On Fri, May 30, 2003 at 05:35:41PM +0300, Ruslan Ermilov wrote:
> > We had a bug in our threaded application that would mistakenly close
> > the descriptor 0, and this triggers a bug in libc_r which I will try
> > to describe below.
> ...
> > Some important notes: this bug is only applicable to descriptors
> > 0 - 2 (stdio set), and might have something to do with the code
> > in uthread_fd.c.  If you remove two lines that free the descriptor
> > 0 in the attached test case, the bug won't manifest itself.
> 
> please have a look at
> 
> http://www.freebsd.org/cgi/query-pr.cgi?pr=51535

Yes, and PR 49087 also.  If someone (Ruslan?) wants to commit them,
go ahead.  They are probably applicable to -stable also.

-- 
Dan Eischen