From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752781Ab3BDHII (ORCPT ); Mon, 4 Feb 2013 02:08:08 -0500 Received: from science.horizon.com ([71.41.210.146]:59844 "HELO science.horizon.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1751437Ab3BDHIH (ORCPT ); Mon, 4 Feb 2013 02:08:07 -0500 Date: 4 Feb 2013 02:08:05 -0500 Message-ID: <20130204070805.28980.qmail@science.horizon.com> From: "George Spelvin" To: jslaby@suse.cz, linux-serial@vger.kernel.org Subject: Re: 3.8-rc regression with pps-ldisc due to 70ece7a731 Cc: giometti@linux.it, lasaine@lvk.cs.msu.su, linux-kernel@vger.kernel.org, linux@horizon.com In-Reply-To: <20130204041857.12347.qmail@science.horizon.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Just a quick update: the previously posted patch *does* work; the crash I was experiencing was pilot error. My NTP server is running a 3.8.0-rc6-dirty kernel right now. I'll research whether that race I talk about in pps_tty_dcd_change is actually possible or not (can interrupts start arriving before the ->open() method returns?) and work out a finished minimal bugfix patch if nobody else finds a better solution. Sorry for the delay tracking this down; I've known about the crash for a week or so now, but was short of around tuitts to track it down. (Have I mentioned how ANNOYING it is when the kernel dumps more than 50 lines of crash message to the console screen and then locks the keyboard so I can't scroll back?)