linux-kernel - Re: Bug: Status/Summary of slashdot leap-second crash on new years 2008-2009

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Date:	Fri, 02 Jan 2009 14:25:45 -0600
From:	Robert Hancock <hancockr@...w.ca>
To:	linux-kernel@...r.kernel.org
Cc:	linasvepstas@...il.com, "Jeffrey J. Kosowsky" <jeff@...owsky.org>,
	MentalMooMan <slashdot@...eshallam.info>,
	Travis Crump <pretzalz@...hhouse.org>,
	Goodgerster <goodgerster@...il.com>, burdell@...ntheinter.net
Subject:  Re: Bug: Status/Summary of slashdot leap-second crash on new years
   2008-2009

Diego Calleja wrote:
> El Fri, 2 Jan 2009 13:25:38 -0600, "Linas Vepstas" <linasvepstas@...il.com> escribió:
> 
>> Suspect its an kernel race condition triggered by ntp bumping the second.
> 
> How could I create a test case that reproduces what ntp does? Just add
> a second?

I'd think that setting the clock to just before midnight on Dec.31 and 
using the adjtimex syscall to set the TIME_INS state on the clock, then 
waiting until midnight rolls around would be a reasonable test..

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