linux-kernel - Re: 2.6.18-rt1

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Date:	Wed, 20 Sep 2006 16:17:24 -0400
From:	Gene Heskett <gene.heskett@...izon.net>
To:	linux-kernel@...r.kernel.org
Cc:	Daniel Walker <dwalker@...sta.com>, paulmck@...ibm.com,
	Ingo Molnar <mingo@...e.hu>,
	Thomas Gleixner <tglx@...utronix.de>,
	John Stultz <johnstul@...ibm.com>,
	Dipankar Sarma <dipankar@...ibm.com>,
	Arjan van de Ven <arjan@...radead.org>
Subject: Re: 2.6.18-rt1

On Wednesday 20 September 2006 14:34, Daniel Walker wrote:
>On Wed, 2006-09-20 at 11:25 -0700, Paul E. McKenney wrote:
>> OK, using that instead.
>>
>> I get the following at startup, which probably means that I need to use
>> some machine other than a NUMA-Q.  Trying a different machine...
>>
>>       Thanx, Paul
>>
>> BUG: unable to handle kernel NULL pointer dereference at virtual
>> address 00000000 printing eip:
>> c01151ff
>> *pde = 34d21001
>> *pte = 00000000
>> stopped custom tracer.
>> Oops: 0000 [#1]
>> PREEMPT SMP
>> Modules linked in:
>> CPU:    2
>> EIP:    0060:[<c01151ff>]    Not tainted VLI
>> EFLAGS: 00010246   (2.6.18-rt2-autokern1 #1)
>> EIP is at __wake_up_common+0x10/0x55
>
>I get this too, it happens when HRT is off.. If you turn HRT on it will
>boot .. I haven't found a fix for it, but I imagine Thomas will find it
>soon.
>
>Daniel

I'm re-building with HRT on now, but I just noticed another side effect of 
2.6.18.  I have an led sniffer plugged into the pl2302 usb<->serial 
adaptor laying where I can see it, and all leds are red, as if the 
interface has not been inited properly.  And I don't see it being 
initialized in the dmesg.  I thought the default was to build it.  Yup, 
pl2303.ko is present in the /lib/modules trees all across the board.

Any ideas on this one folks?

-- 
Cheers, Gene
"There are four boxes to be used in defense of liberty:
 soap, ballot, jury, and ammo. Please use in that order."
-Ed Howdershelt (Author)
Yahoo.com and AOL/TW attorneys please note, additions to the above
message by Gene Heskett are:
Copyright 2006 by Maurice Eugene Heskett, all rights reserved.
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