linux-kernel - Re: futex: race in lock and unlock&exit for robust futex with PI?

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Message-ID: <20100628154002.GB24127@tiehlicka.suse.cz>
Date:	Mon, 28 Jun 2010 17:40:02 +0200
From:	Michal Hocko <mhocko@...e.cz>
To:	Darren Hart <dvhltc@...ibm.com>
Cc:	Thomas Gleixner <tglx@...utronix.de>,
	Peter Zijlstra <a.p.zijlstra@...llo.nl>,
	LKML <linux-kernel@...r.kernel.org>,
	Nick Piggin <npiggin@...e.de>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: futex: race in lock and unlock&exit for robust futex with PI?

On Mon 28-06-10 17:32:14, Michal Hocko wrote:
[...]
> Btw. I guess that there is a typo in the condition and it should be
> like this:
> 	if (cred->euid != pcred->euid &&
> -		    cred->euid != pcred->uid)
> + 		    cred->uid != pcred->uid)

Scratch that. This looks correct.


-- 
Michal Hocko
L3 team 
SUSE LINUX s.r.o.
Lihovarska 1060/12
190 00 Praha 9    
Czech Republic
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