From: Oleg Nesterov <oleg@redhat.com>
To: Kaz Kylheku <kkylheku@gmail.com>
Cc: Roland McGrath <roland@redhat.com>,
linux-kernel@vger.kernel.org,
Andrew Morton <akpm@linux-foundation.org>,
Ulrich Drepper <drepper@redhat.com>
Subject: Re: main thread pthread_exit/sys_exit bug!
Date: Thu, 5 Feb 2009 17:15:44 +0100 [thread overview]
Message-ID: <20090205161544.GA24799@redhat.com> (raw)
In-Reply-To: <3f43f78b0902042055p37ff9ab2u84840273b34c7373@mail.gmail.com>
On 02/04, Kaz Kylheku wrote:
>
> On Wed, Feb 4, 2009 at 7:05 PM, Roland McGrath <roland@redhat.com> wrote:
> > I haven't seen the clear explanation of what specific actual problems there
> > are here. But I'm quite sure this is not the right approach to address them.
> >
> > Kaz has said things that seemed to imply that the behavior is erratic or
> > the semantics are somehow ill-defined when the group leader has died with
> > other threads living on. In fact, this case is perfectly well-specified
> > and there is no mystery about it.
>
> I haven't observed anything that could be called erratic. The behavior that
> occurs, occurs reliably.
Yes we have the bug, and wait_task_stopped() should be fixed. But it is
buggy anyway, even if we delay the death of the main thread. But I also
think we shouldn't.
(and I am sorry, I still can't find the time to redo my old patch, will
try to do this asap).
Oleg.
next prev parent reply other threads:[~2009-02-05 16:18 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-01 22:32 main thread pthread_exit/sys_exit bug! Kaz Kylheku
[not found] ` <20090201174159.4a52e15c.akpm@linux-foundation.org>
2009-02-02 6:45 ` Oleg Nesterov
2009-02-02 7:10 ` Kaz Kylheku
2009-02-02 16:56 ` Oleg Nesterov
2009-02-02 20:10 ` Kaz Kylheku
2009-02-02 20:17 ` Ulrich Drepper
2009-02-02 20:39 ` Kaz Kylheku
2009-02-03 2:39 ` Kaz Kylheku
2009-02-03 13:33 ` Oleg Nesterov
2009-02-03 19:51 ` Kaz Kylheku
2009-02-03 21:32 ` Oleg Nesterov
2009-02-03 23:06 ` Kaz Kylheku
2009-02-05 3:05 ` Roland McGrath
2009-02-05 4:55 ` Kaz Kylheku
2009-02-05 16:15 ` Oleg Nesterov [this message]
2009-02-05 21:22 ` Roland McGrath
2009-02-05 23:22 ` Oleg Nesterov
2009-02-09 3:33 ` Roland McGrath
2009-02-09 4:52 ` Oleg Nesterov
2009-02-09 5:14 ` Oleg Nesterov
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