linux-kernel - Re: [PATCH 00/11] 2.6.32-stable: Fix for leapsecond deadlock & hrtimer/futex issue

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Date:	Thu, 19 Jul 2012 14:56:53 +0200
From:	Willy Tarreau <w@....eu>
To:	John Stultz <johnstul@...ibm.com>
Cc:	stable@...r.kernel.org, Prarit Bhargava <prarit@...hat.com>,
	Thomas Gleixner <tglx@...utronix.de>,
	Linux Kernel <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 00/11] 2.6.32-stable: Fix for leapsecond deadlock & hrtimer/futex issue

On Thu, Jul 19, 2012 at 11:53:11AM +0200, Willy Tarreau wrote:
> On Tue, Jul 17, 2012 at 05:34:30PM -0700, John Stultz wrote:
> > On 07/17/2012 03:05 PM, John Stultz wrote:
> > >This is the last backport I have ready at this time. I realize there's
> > >still the 2.6.27 tree, but if I recall correctly I had some trouble
> > >getting that booted in my test environment. I can take a swing at
> > >backporting it, but I may need a hand with testing.
> > 
> > And if anyone is interested in helping test, I've got a first pass 
> > (builds & mostly boots) of the 2.6.27-stable backports here:
> > git://git.linaro.org/people/jstultz/linux.git leapfix/2.6.27.62
> > 
> > http://git.linaro.org/gitweb?p=people/jstultz/linux.git;a=shortlog;h=refs/heads/leapfix/2.6.27.62
> > 
> > Unfortunately I run into udev issues trying to boot this on my more 
> > recent test environment.
> 
> John, don't waste your time trying to boot older kernels, I'm well
> equipped for this task and it's much easier for me, so let's split
> the work efficiently :-)

OK so first, I managed to crash latest 2.6.32.x in less than one minute
using leapcrash and I cannot crash it anymore after an hour with your
patches applied.

I'll try to develop a small futex-based PoC to test the other reproducer,
then I'll duplicate the tests on 2.6.27.

Looks good so far.

Thanks,
Willy

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