linux-kernel - Re: futex strangeness in 2.6.23-mm1/UML

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Message-Id: <20071023090039.94e1717a.akpm@linux-foundation.org>
Date:	Tue, 23 Oct 2007 09:00:39 -0700
From:	Andrew Morton <akpm@...ux-foundation.org>
To:	Rik van Riel <riel@...hat.com>
Cc:	Pavel Emelyanov <xemul@...nvz.org>,
	Miklos Szeredi <miklos@...redi.hu>,
	linux-kernel@...r.kernel.org, raven@...maw.net
Subject: Re: futex strangeness in 2.6.23-mm1/UML

On Tue, 23 Oct 2007 09:52:08 -0400 Rik van Riel <riel@...hat.com> wrote:

> On Tue, 23 Oct 2007 12:55:44 +0400
> Pavel Emelyanov <xemul@...nvz.org> wrote:
> 
> > I look at the 2.6.23-mm1 and see that there's one hunk lost. This
> > is the one Oleg re-sent some days ago (the mail thread subject was
> > 2.6.23-mm1 thread exit_group issue). Here it is (sent 13 oct 2007):
> > 
> > --- kernel/fork.c~	2007-10-13 15:41:35.000000000 +0400
> > +++ kernel/fork.c	2007-10-13 15:41:41.000000000 +0400
> > @@ -1443,6 +1443,9 @@ long do_fork(unsigned long clone_flags,
> >  			task_pid_nr_ns(p, current->nsproxy->pid_ns) :
> >  				task_pid_vnr(p);
> >  
> > +		if (clone_flags & CLONE_PARENT_SETTID)
> > +			put_user(nr, parent_tidptr);
> > +
> >  		if (clone_flags & CLONE_VFORK) {
> >  			p->vfork_done = &vfork;
> >  			init_completion(&vfork);
> > 
> > Please, try with this patch.
> 
> The patch above fixes the issue for me.
> 
> Autofs works again as expected.

argh.  Sorry guys, I'd completely forgotten that that bug was present in
-mm1 and I didn't upload the fix into hot-fixes/.  Bad me.
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