Re: 2.6.33.[56]-rt23: howto create repeatable explosion in wakeup_next_waiter()

[Darren Hart <dvhltc@xxxxxxxxxx>]

On 07/08/2010 05:05 AM, Mike Galbraith wrote:
> On Wed, 2010-07-07 at 07:03 -0700, Darren Hart wrote:
>
> > I see kernel version is: 2.6.33.6-rt23, have you reproduced this on
> > earlier kernel versions as well? Any 2.6.31 rt kernel would be a good
> > data point.
>
> FUTEX_CMP/WAIT_REQUEUE_PI first appeared in 2.6.29-rt, as does the
> explosion.

Right. I haven't had a chance to look into this yet. I will have some 
time today.

--
Darren Hart
IBM Linux Technology Center
Real-Time Linux Team
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