From: Ingo Molnar <mingo@elte.hu>
To: Florian Schmidt <mista.tapas@gmx.net>
Cc: Michael Geithe <warpy@gmx.de>,
Linux Kernel list <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@osdl.org>
Subject: Re: 2.6.10-rc1-bk4 and kernel/futex.c:542
Date: Tue, 26 Oct 2004 13:24:15 +0200 [thread overview]
Message-ID: <20041026112415.GA21015@elte.hu> (raw)
In-Reply-To: <20041026133126.1b44fb38@mango.fruits.de>
* Florian Schmidt <mista.tapas@gmx.net> wrote:
> On Tue, 26 Oct 2004 11:35:50 +0200
> Michael Geithe <warpy@gmx.de> wrote:
>
> > hi,
> > here are some error messages after reboot in my logs.
> >
> > Badness in futex_wait at kernel/futex.c:542
>
> Hey Ingo,
>
> this futex.c:542 looks familiar to me (see the BUG logs for RP-V0.2). Dunno
> if it's coincidence though. Just guessing they might be correlated.
yeah, it definitely looks like there is some futex race that the
PREEMPT_REALTIME kernel triggers in no time. (this is because the
locking in the PREEMPT_REALTIME kernel is equivalent to an SMP system
with an infinite number of CPUs and will trigger the same races.)
Ingo
next prev parent reply other threads:[~2004-10-26 11:23 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-10-26 9:35 2.6.10-rc1-bk4 and kernel/futex.c:542 Michael Geithe
2004-10-26 11:31 ` Florian Schmidt
2004-10-26 11:24 ` Ingo Molnar [this message]
2004-10-26 11:38 ` Michael Geithe
2004-10-26 12:04 ` Nick Piggin
2004-10-26 18:50 ` Ingo Molnar
2004-10-26 17:21 ` Michal Schmidt
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