Re: 2.6.10-rc1-bk4 and kernel/futex.c:542

[Ingo Molnar]

* Florian Schmidt <mista.tapas@xxxxxxx> wrote:

> On Tue, 26 Oct 2004 11:35:50 +0200
> Michael Geithe <warpy@xxxxxx> 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
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/