linux-kernel - Re: 2.6.32.21 - uptime related crashes?

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Date:	Tue, 12 Jul 2011 06:19:38 +0200
From:	Willy Tarreau <w@....eu>
To:	"MINOURA Makoto / ?$BL'1: ?$B??" <minoura@...inux.co.jp>
Cc:	john stultz <johnstul@...ibm.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Faidon Liambotis <paravoid@...ian.org>,
	linux-kernel@...r.kernel.org, stable@...nel.org,
	Nikola Ciprich <nikola.ciprich@...uxbox.cz>,
	seto.hidetoshi@...fujitsu.com,
	Hervé Commowick <hcommowick@...sec.fr>,
	Rand@...per.es
Subject: Re: 2.6.32.21 - uptime related crashes?

On Tue, Jul 12, 2011 at 11:49:57AM +0900, MINOURA Makoto / ?$BL'1: ?$B?? wrote:
> 
> |> In <1310434819.30337.21.camel@...k-vm>
> |>  john stultz <johnstul@...ibm.com> wrote:
> 
> > I'm working on a debug patch that will hopefully trip sched_clock
> > overflows very early to see if we can't shake these issues out.
> 
> Thanks. I hope that'll help.

That certainly will. What currently makes this bug hard to fix is that
it takes around 7 months to test a possible fix. We don't even know if
more recent kernels are affected, it's possible that 2.6.32-stable is
the only one that people don't reboot for an update in 7 months :-/

We need to make this bug more visible, so John's patch will be very
welcome !

Regards,
Willy

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