From: Darren Hart <dvhltc@us.ibm.com>
To: Mike Galbraith <efault@gmx.de>
Cc: Thomas Gleixner <tglx@linutronix.de>,
linux-rt-users <linux-rt-users@vger.kernel.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>
Subject: Re: 2.6.33.[56]-rt23: howto create repeatable explosion in wakeup_next_waiter()
Date: Thu, 08 Jul 2010 07:12:15 -0700 [thread overview]
Message-ID: <4C35DCBF.9070109@us.ibm.com> (raw)
In-Reply-To: <1278590730.10399.3.camel@marge.simson.net>
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
next prev parent reply other threads:[~2010-07-08 14:12 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-07-07 4:46 2.6.33.[56]-rt23: howto create repeatable explosion in wakeup_next_waiter() Mike Galbraith
2010-07-07 8:03 ` Mike Galbraith
2010-07-07 11:57 ` Thomas Gleixner
2010-07-07 12:50 ` Mike Galbraith
2010-07-07 11:57 ` Thomas Gleixner
2010-07-07 14:03 ` Darren Hart
2010-07-07 14:17 ` Mike Galbraith
2010-07-08 12:05 ` Mike Galbraith
2010-07-08 14:12 ` Darren Hart [this message]
2010-07-09 2:11 ` Darren Hart
2010-07-09 4:32 ` Mike Galbraith
[not found] ` <4C36CD83.6070809@us.ibm.com>
2010-07-09 8:13 ` Mike Galbraith
2010-07-09 13:58 ` Mike Galbraith
2010-07-09 14:51 ` Mike Galbraith
2010-07-09 16:35 ` Darren Hart
2010-07-09 19:34 ` Mike Galbraith
2010-07-09 20:05 ` Darren Hart
2010-07-13 8:03 ` [PATCH][RT] futex: protect against pi_blocked_on corruption during requeue PI Darren Hart
2010-07-13 9:25 ` Thomas Gleixner
2010-07-13 10:28 ` Thomas Gleixner
2010-07-13 11:52 ` [PATCH][RT] futex: protect against pi_blocked_on corruption during requeue PI -V2 Thomas Gleixner
2010-07-13 15:57 ` Mike Galbraith
2010-07-13 18:59 ` Darren Hart
2010-07-18 8:32 ` Mike Galbraith
2010-07-13 9:58 ` [PATCH][RT] futex: protect against pi_blocked_on corruption during requeue PI Thomas Gleixner
2010-07-07 14:11 ` 2.6.33.[56]-rt23: howto create repeatable explosion in wakeup_next_waiter() gowrishankar
2010-07-07 14:31 ` Mike Galbraith
2010-07-07 15:05 ` Darren Hart
2010-07-07 17:45 ` Mike Galbraith
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