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From: Thomas Gleixner <tglx@linutronix.de>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Frans Pop <elendil@planet.nl>,
	linux-kernel@vger.kernel.org, john stultz <johnstul@us.ibm.com>
Subject: Re: [stable 2.6.24] WARNING: at kernel/time/clockevents.c
Date: Wed, 13 Feb 2008 09:21:28 +0100 (CET)	[thread overview]
Message-ID: <alpine.LFD.1.00.0802130845380.12988@apollo.tec.linutronix.de> (raw)
In-Reply-To: <20080212230741.576b8004.akpm@linux-foundation.org>

On Tue, 12 Feb 2008, Andrew Morton wrote:
> On Sun, 10 Feb 2008 14:40:21 +0100 Frans Pop <elendil@planet.nl> wrote:
> the hrtimer code is preparing an invalid ktime_t.  Note that
> clockevents_program_event() actually fails when this happens - I am
> surprised that this is not causing observeable userspace problems.
> 
> The WARN_ON_ONCE() means that you'll only see this warning once per boot. 
> But the actually error could be happening any number of times without being
> reported.
> 
> Looks pretty serious?

Yes. It's the same problem, which got fixed with:

http://git.kernel.org/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=62f0f61e6673e67151a7c8c0f9a09c7ea43fe2b5

Frans, Thanks for reporting !

I'm working on a fix.

Thanks,

	tglx

  reply	other threads:[~2008-02-13  8:30 UTC|newest]

Thread overview: 9+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-02-10 13:40 Frans Pop
2008-02-10 14:20 ` Frans Pop
2008-02-13  7:07 ` Andrew Morton
2008-02-13  8:21   ` Thomas Gleixner [this message]
2008-02-13  8:47     ` Frans Pop
2008-02-13  9:32       ` Thomas Gleixner
2008-02-13 21:40         ` Frans Pop
2008-02-14  0:20           ` Thomas Gleixner
2008-02-14 11:30             ` Frans Pop

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