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From: Willy Tarreau <w@1wt.eu>
To: John Stultz <johnstul@us.ibm.com>
Cc: stable@vger.kernel.org, Prarit Bhargava <prarit@redhat.com>,
	Thomas Gleixner <tglx@linutronix.de>,
	Linux Kernel <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 00/11] 3.0-stable: Fix for leapsecond deadlock & hrtimer/futex issue
Date: Tue, 17 Jul 2012 21:05:53 +0200	[thread overview]
Message-ID: <20120717190553.GA4140@1wt.eu> (raw)
In-Reply-To: <5005ABC2.8050006@us.ibm.com>

On Tue, Jul 17, 2012 at 11:15:30AM -0700, John Stultz wrote:
> Attached are two tests. One is general exerciser of the leapsecond code 
> (leap-a-day) which also notes if it sees the hrtimer/futuex early 
> expiration issue, and the other is a much faster (almost immediate) 
> reproducer for the leapsecond deadlock (leapcrash).
> 
> The leapcrash test will likely wedge unpatched systems in hardirq 
> context, and has caused lost (dirty) data in my testing, so BEWARE!
> RUN AT YOUR OWN RISK!

Thank you, and nice note for the big warning above. I have some diskless
machines which don't risk anything, I will test there first :-)

Cheers,
Willy


  parent reply	other threads:[~2012-07-17 19:06 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-07-17 17:33 [PATCH 00/11] 3.0-stable: Fix for leapsecond deadlock & hrtimer/futex issue John Stultz
2012-07-17 17:33 ` [PATCH 01/11] 3.0.x: ntp: Fix leap-second hrtimer livelock John Stultz
2012-07-17 22:49   ` Patch "ntp: Fix leap-second hrtimer livelock" has been added to the 3.0-stable tree gregkh
2012-07-17 17:33 ` [PATCH 02/11] 3.0.x: ntp: Correct TAI offset during leap second John Stultz
2012-07-17 22:49   ` Patch "ntp: Correct TAI offset during leap second" has been added to the 3.0-stable tree gregkh
2012-07-17 17:33 ` [PATCH 03/11] 3.0.x: timekeeping: Fix CLOCK_MONOTONIC inconsistency during leapsecond John Stultz
2012-07-17 22:49   ` Patch "timekeeping: Fix CLOCK_MONOTONIC inconsistency during leapsecond" has been added to the 3.0-stable tree gregkh
2012-07-17 17:33 ` [PATCH 04/11] 3.0.x: time: Move common updates to a function John Stultz
2012-07-17 17:49   ` Jonathan Nieder
2012-07-17 22:50   ` Patch "time: Move common updates to a function" has been added to the 3.0-stable tree gregkh
2012-07-17 17:33 ` [PATCH 05/11] 3.0.x: hrtimer: Provide clock_was_set_delayed() John Stultz
2012-07-17 22:49   ` Patch "hrtimer: Provide clock_was_set_delayed()" has been added to the 3.0-stable tree gregkh
2012-07-17 17:33 ` [PATCH 06/11] 3.0.x: timekeeping: Fix leapsecond triggered load spike issue John Stultz
2012-07-17 22:49   ` Patch "timekeeping: Fix leapsecond triggered load spike issue" has been added to the 3.0-stable tree gregkh
2012-07-17 17:33 ` [PATCH 07/11] 3.0.x: timekeeping: Maintain ktime_t based offsets for hrtimers John Stultz
2012-07-17 22:49   ` Patch "timekeeping: Maintain ktime_t based offsets for hrtimers" has been added to the 3.0-stable tree gregkh
2012-07-17 17:33 ` [PATCH 08/11] 3.0.x: hrtimers: Move lock held region in hrtimer_interrupt() John Stultz
2012-07-17 22:49   ` Patch "hrtimers: Move lock held region in hrtimer_interrupt()" has been added to the 3.0-stable tree gregkh
2012-07-17 17:33 ` [PATCH 09/11] 3.0.x: timekeeping: Provide hrtimer update function John Stultz
2012-07-17 22:49   ` Patch "timekeeping: Provide hrtimer update function" has been added to the 3.0-stable tree gregkh
2012-07-17 17:33 ` [PATCH 10/11] 3.0.x: hrtimer: Update hrtimer base offsets each hrtimer_interrupt John Stultz
2012-07-17 22:49   ` Patch "hrtimer: Update hrtimer base offsets each hrtimer_interrupt" has been added to the 3.0-stable tree gregkh
2012-07-17 17:33 ` [PATCH 11/11] 3.0.x: timekeeping: Add missing update call in timekeeping_resume() John Stultz
2012-07-17 22:49   ` Patch "timekeeping: Add missing update call in timekeeping_resume()" has been added to the 3.0-stable tree gregkh
2012-07-17 17:57 ` [PATCH 00/11] 3.0-stable: Fix for leapsecond deadlock & hrtimer/futex issue Willy Tarreau
2012-07-17 18:15   ` John Stultz
2012-07-17 18:20     ` John Stultz
2012-07-17 18:26       ` Jonathan Nieder
2012-07-17 19:04         ` John Stultz
2012-07-17 19:14           ` Jonathan Nieder
2012-07-17 19:18             ` John Stultz
2012-07-17 19:05     ` Willy Tarreau [this message]
2012-07-17 22:50 ` Greg KH

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