From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752723AbYDEAu6 (ORCPT ); Fri, 4 Apr 2008 20:50:58 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751369AbYDEAut (ORCPT ); Fri, 4 Apr 2008 20:50:49 -0400 Received: from fmmailgate05.web.de ([217.72.192.243]:39480 "EHLO fmmailgate05.web.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751350AbYDEAus convert rfc822-to-8bit (ORCPT ); Fri, 4 Apr 2008 20:50:48 -0400 Date: Sat, 05 Apr 2008 02:50:47 +0200 Message-Id: <226243507@web.de> MIME-Version: 1.0 From: devzero@web.de To: rogerheflin@gmail.com Cc: dan.hecht@vmware.com, johnstul@us.ibm.com, linux-kernel@vger.kernel.org, zippel@linux-m68k.org Subject: =?iso-8859-15?Q?Re:_Clock_has_stopped_(time/date_looping_over_5_second?= =?iso-8859-15?Q?s),_things_are?= Organization: http://freemail.web.de/ X-Provags-Id: V01U2FsdGVkX18Ubf5AqZwOLuY1Dp13Kb0qP3VT1WAvPgtUpIaPtizpgf21Z nduGPWNpUknvbIojdj7sb6sBwzmz5n2wLfckRgHkhMxUHZCeAo= Content-Type: text/plain; charset=iso-8859-15 Content-Transfer-Encoding: 8BIT Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org so, this happens on real hardware for you? i could reproduce this with a linux virtual machine on vmware - whenever i suspended the windows host with a linux vm running in vmware, after resume the linux vm showed exactly this issue. after some investigation i found, that it would recover from that state after some time - and the time needed for recover was (more or less) proportional to that time the host was in suspend(hibernate) state. also see http://marc.info/?l=linux-kernel&m=120186717701371&w=2 i thought that was vmware related and i gave a bug report to dan hecht - i didn`t hear anything since then, but i think it`s worth CC`ing him. not sure if [PATCH 1/2] Introduce clocksource_forward_now -> http://marc.info/?l=linux-kernel&m=120716471203567&w=2 [PATCH 2/2] Introduce CLOCK_MONOTONIC_RAW -> http://marc.info/?l=linux-kernel&m=120596518521892&w=2 is related ? (also CC`d the patch authors, they will probably know) regards roland List: linux-kernel Subject: Clock has stopped (time/date looping over 5 seconds), things are From: Roger Heflin Date: 2008-04-04 21:27:11 Message-ID: 47F69D2F.8010607 () gmail ! com [Download message RAW] So far what I have is that the clock is moving between 10:01:03 to 10:01:07 (when it gets to 07 it goes back to 03), doing rdate -s results in things changing: 16:12:38 to 16:12:43 (resets back to :38). Doing this: while true ; do date; usleep 1000000; done Fri Apr 4 16:12:39 CDT 2008 Fri Apr 4 16:12:40 CDT 2008 Fri Apr 4 16:12:41 CDT 2008 Fri Apr 4 16:12:42 CDT 2008 Fri Apr 4 16:12:43 CDT 2008 It stops at :43, ^C is required, and you can then restart it with repeatable results. This F7 - 2.6.23.15-80.fc7 dmesg/messages contain nothing abnormal. This machine has done it several times, a freqency of maybe 1x per every couple of weeks or so. I believe it had also done this with: 2.6.22.9-91.fc7 so it has been doing this for a while. It used to work with some older kernel (I don't know which). Given what the clock is doing, things that sleep at the wrong time hang forever, and a number of other things fail to work. vmstat 1 results in a single line being printed out, and then a floating point exception. "shutdown -r now" fails to complete, power cycle is required to get the machine back up. I don't believe any hardware failure that I can think of would cause the clock to do what mine is doing. Ideas? Roger _________________________________________________________________________ Mit der Gruppen-SMS von WEB.DE FreeMail können Sie eine SMS an alle Freunde gleichzeitig schicken: http://freemail.web.de/features/?mc=021179