linux-kernel - Re: 2.6.21.5 june 30th to july 1st date hang?

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Message-ID: <20070703135949.GB19565@master.home>
Date:	Tue, 3 Jul 2007 15:59:49 +0200
From:	Florian Attenberger <valdyn@...il.com>
To:	linux-kernel@...r.kernel.org
Subject: Re: 2.6.21.5 june 30th to july 1st date hang?

On Tue, Jul 03, 2007 at 08:44:00AM -0400, Fortier,Vincent [Montreal] wrote:
> Hi all,
> 
> All my servers and workstations running a 2.6.21.5 kernel hanged exactly
> when the date shift from june 30th to july 1st.
> 
> On my monitoring system every single station running a 2.6.21.5 kernel
> stoped responding exactly after midnight on the date shift from June
> 30th to July 1st.  Although, stations still running 2.6.18 to 2.6.20.11
> worked flawlessly.
> 
> I first tought there had been an electricity outage but two of my
> servers (dell PE 2950 dual-quad core) on UPS in our server room also
> hanged:
> Jun 30 23:55:01 urpdev1 /USR/SBIN/CRON[31298]: (root) CMD ([ -x
> /usr/lib/sysstat/sa1 ] && { [ -r "$DEFAULT" ] && . "$DEFAULT" ; [
> "$ENABLED" = "true" ] && exec /usr/lib/sysstat/sa1; })
> Jul  3 11:54:03 urpdev1 syslogd 1.4.1#17: restart.
> 
> I could not get anything on any of the 20+ consoles...  All the systems
> hanged at around the exact same time... When the date shifted from June
> 30th to July 1st in UTC ...?
> 
> Any clue any one?
> 
> - vin
> -
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>
there was one 'special' event at that date:
syslog.2.gz:Jul  1 01:59:59 master kernel: Clock: inserting leap second
23:59:60 UTC

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