linux-kernel - Re: [PATCH] posix-timer: fix deletion race

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Message-ID: <Pine.LNX.4.63.0707181203110.3157@localhost.localdomain>
Date:	Wed, 18 Jul 2007 12:08:06 -0700 (PDT)
From:	Jeremy Katz <jeremy.katz@...driver.com>
To:	Oleg Nesterov <oleg@...sign.ru>
cc:	Thomas Gleixner <tglx@...utronix.de>, linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...l.org>, Ingo Molnar <mingo@...e.hu>,
	Stable Team <stable@...nel.org>
Subject: Re: [PATCH] posix-timer: fix deletion race

On Wed, 18 Jul 2007, Oleg Nesterov wrote:

> Jeremy, I agree with Thomas that your patch should not be right, but it
> does make a difference. Perhaps this is just the timing, but who knows.
> Could you add some printk's to be sure that lock_timer() actually fails
> while it never should?

Agreed.

Unfortunately, adding any significant output appears to alter the 
situation to the point where the issue either does not occur, or takes 
significantly longer to surface.

Jeremy
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