linux-kernel - Re: [RFC/RFT PATCH] sched: automated per tty task groups

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Message-Id: <1287585713.18165.3.camel@marge.simson.net>
Date:	Wed, 20 Oct 2010 16:41:53 +0200
From:	Mike Galbraith <efault@....de>
To:	Markus Trippelsdorf <markus@...ppelsdorf.de>
Cc:	linux-kernel@...r.kernel.org
Subject: Re: [RFC/RFT PATCH] sched: automated per tty task groups

On Wed, 2010-10-20 at 15:55 +0200, Markus Trippelsdorf wrote:
> Mike Galbraith wrote:
> 
> > Comments, suggestions etc highly welcome.
> 
> I've tested your patch and it runs smoothly on my machine.
> However I had several NULL pointer dereference BUGs that happened when I 
> left X or rebooted my system. I think this is caused by your patch. 
> There is nothing in the logs unfortunately, but I scribbled down the 
> following by hand (not the whole trace, I'm too lazy):
> 
> BUG: unable to handle NULL pointer dereference at 0..038
> IP:   pick_next_task_fair 0xa7/0x1a0
> ...
> Call Trace: schedule 
> ...

Hm.  Not much I can do without the trace, but thanks for testing and
reporting anyway, guess I need to do some heavy stress testing.  I'm
re-writing it as I write this anyway.

        thanks,

        -Mike

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