linux-kernel - Re: [BUG] futex_unlock_pi() hurts my brain and may cause application deadlock

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Date:	Thu, 31 May 2007 16:55:55 +0200
From:	Ingo Molnar <mingo@...e.hu>
To:	john stultz <johnstul@...ibm.com>
Cc:	lkml <linux-kernel@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Steven Rostedt <rostedt@...dmis.org>,
	Sripathi Kodi <sripathik@...ibm.com>,
	Oleg Nesterov <oleg@...sign.ru>,
	Alexey Kuznetsov <kuznet@....inr.ac.ru>
Subject: Re: [BUG] futex_unlock_pi() hurts my brain and may cause application deadlock


* john stultz <johnstul@...ibm.com> wrote:

> > > --- a/kernel/futex.c
> > > +++ b/kernel/futex.c
> > > @@ -2011,6 +2011,7 @@ pi_faulted:
> > >  					 attempt);
> > >  		if (ret)
> > >  			goto out_unlock;
> > > +		uval = 0;
> > >  		goto retry_locked;
> > 
> > this looks good to me. Oleg has posted a few more fixes as well - 
> > have you tried those too?
> 
> Do you have a URL or subject line for the discussion? I'll take a look 
> and give them a whirl.

i meant to say Alexey, not Oleg :-) Here's the thread:

   http://lkml.org/lkml/2007/5/7/129

i've Cc:-ed Alexey too.

	Ingo
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