From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965264AbWFINgf (ORCPT ); Fri, 9 Jun 2006 09:36:35 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S965265AbWFINgf (ORCPT ); Fri, 9 Jun 2006 09:36:35 -0400 Received: from adsl-70-250-156-241.dsl.austtx.swbell.net ([70.250.156.241]:37256 "EHLO gw.microgate.com") by vger.kernel.org with ESMTP id S965264AbWFINgf (ORCPT ); Fri, 9 Jun 2006 09:36:35 -0400 Message-ID: <44897937.9010201@microgate.com> Date: Fri, 09 Jun 2006 08:35:51 -0500 From: Paul Fulghum User-Agent: Mozilla Thunderbird 1.0 (Windows/20041206) X-Accept-Language: en-us, en MIME-Version: 1.0 To: Chuck Ebbert <76306.1226@compuserve.com> CC: Alan Cox , linux-kernel Subject: Re: 2.6.16.18 kernel freezes while pppd is exiting References: <200606081909_MC3-1-C1F0-8B6B@compuserve.com> In-Reply-To: <200606081909_MC3-1-C1F0-8B6B@compuserve.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Chuck Ebbert wrote: >>What kind of device are you using with pppd? >>(so I can identify which driver is feeding >>the tty layer receive data) > > > Just a regular 16550A port at 57600 baud using the 8250 driver. > > >>Are you setting the low_latency flag on that device? >>(setserial) > > > Not that I know of. OK, thanks. I'm 99.9% sure I've identified the problem correctly, as it would effect the free list in precisely the way necessary to cause an infinite loop when trying to free the list. My first suggested fix has problems, but there is a straight forward solution I'll try to post today (I've got a backlog of stuff to do here at work before I can get to that.) -- Paul Fulghum Microgate Systems, Ltd.