linux-kernel - Re: [PATCH 00/11] [ANNOUNCE] 3.0.12-rt30-rc2

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Message-ID: <201112070909.56992.tim.sander@hbm.com>
Date:	Wed, 7 Dec 2011 09:09:56 +0100
From:	"Tim Sander" <tim.sander@....com>
To:	"Steven Rostedt" <rostedt@...dmis.org>
Cc:	"Thomas Gleixner" <tglx@...utronix.de>,
	"Tim Sander" <tim01@...i.informatik.tu-darmstadt.de>,
	<linux-kernel@...r.kernel.org>,
	"linux-rt-users" <linux-rt-users@...r.kernel.org>,
	"Carsten Emde" <C.Emde@...dl.org>, "John Kacur" <jkacur@...hat.com>
Subject: Re: [PATCH 00/11] [ANNOUNCE] 3.0.12-rt30-rc2

Hi Steve
> > I should also point out, that this phenomen was not always happening, but
> > only sometimes and then again disapeared without any known reason.
> 
> Hmm, then are you sure that the tasklet patch causes the bug? Or perhaps
> it only changes the timing to cause it. The bug may be without the patch
> too.
Well, we are running the preempt rt patchset 3.0 since the rt-9 release and we 
have not seen this kind of error. It just started popping up after i applied 
the patch which i took directly from the mailing list when it was posted, 
since we had this ksoftirq issue especially after firmware update when ubifs 
has been updated.

The bad thing is that it is not happening deterministic but seemingly at 
random. But i will try your next prerelease and will report any results.

My patch is also not completly vanilla mainline. I am using the recomended 
patch from ubifs/master, some small platform patches and some timer patches 
Thomas Gleixner knows best about.

Best regards
Tim

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