From: Peter Zijlstra <peterz@infradead.org>
To: Tim Sander <tim.sander@hbm.com>
Cc: Thomas Gleixner <tglx@linutronix.de>,
LKML <linux-kernel@vger.kernel.org>,
linux-rt-users <linux-rt-users@vger.kernel.org>,
"Paul E. McKenney" <paulmck@linux.vnet.ibm.com>
Subject: Re: [ANNOUNCE] 3.0-rt6 : BUG at kernel/trmutex.c:724!
Date: Thu, 04 Aug 2011 18:37:09 +0200 [thread overview]
Message-ID: <1312475829.16729.45.camel@twins> (raw)
In-Reply-To: <201108041834.20575.tim.sander@hbm.com>
On Thu, 2011-08-04 at 18:34 +0200, Tim Sander wrote:
> I was really happy to find 6 preempt rt releases for the 3.0 kernel after holliday :-).
>
> So i went for a testdrive and found an error: The error occurs in a non released non
> mainline kernel and is available from me upon request. It has been working on
> (2.6.39,3.0) but is not working on 3.0-rt6. It fails in an interrupt which calls:
>
> wake_up_interruptible(&hbm_device.wait);
>
> The waitque has been initialized with:
> init_waitqueue_head(&hbm_device.wait);
> before interrupts where enabled. So i don't think its a race.
looks like it tries to use waitqueues from hardirq context, that's a
no-no for -rt. That interrupt should be a threaded interrupt.
next prev parent reply other threads:[~2011-08-04 16:37 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-07-28 21:43 [ANNOUNCE] 3.0-rt6 Thomas Gleixner
2011-07-28 23:33 ` Peter W. Morreale
2011-07-29 0:56 ` Thomas Gleixner
2011-07-29 6:05 ` Mike Galbraith
2011-07-29 14:03 ` Paul E. McKenney
2011-07-29 15:57 ` [ANNOUNCE] 3.0-rt6 (kgdb working) Darren Hart
2011-07-30 15:49 ` [ANNOUNCE] 3.0-rt6 Remy Bohmer
2011-07-30 20:21 ` Remy Bohmer
2011-08-07 10:44 ` Remy Bohmer
2011-08-01 8:42 ` Rolando Martins
2011-08-01 10:34 ` Mike Galbraith
2011-08-01 10:45 ` Rolando Martins
2011-08-01 11:06 ` Peter Zijlstra
2011-08-01 11:10 ` Rolando Martins
2011-08-04 6:34 ` Fernando Lopez-Lezcano
2011-08-04 9:42 ` Peter Zijlstra
2011-08-04 19:05 ` Fernando Lopez-Lezcano
2011-08-04 20:15 ` Uwe Kleine-König
2011-08-05 9:28 ` Uwe Kleine-König
2011-08-05 16:03 ` Fernando Lopez-Lezcano
2011-08-08 17:25 ` Fernando Lopez-Lezcano
2011-08-04 16:34 ` [ANNOUNCE] 3.0-rt6 : BUG at kernel/trmutex.c:724! Tim Sander
2011-08-04 16:37 ` Peter Zijlstra [this message]
2011-08-04 17:04 ` Tim Sander
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