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Re: 2.6.25-rc6: BUG: unable to handle kernel NULL pointer dereference

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From: Markus Rehbach <markus.rehbach@...>
To: Thomas Gleixner <tglx@...>
Cc: Andrew Morton <akpm@...>, Christian Kujau <lists@...>, LKML <linux-kernel@...>, Rafael J. Wysocki <rjw@...>, Ingo Molnar <mingo@...>
Subject: Re: 2.6.25-rc6: BUG: unable to handle kernel NULL pointer dereference
Date: Thursday, March 27, 2008 - 2:30 pm

Thomas Gleixner schrieb:
 > On Tue, 25 Mar 2008, Andrew Morton wrote:

 >> http://lkml.org/lkml/2008/3/21/202 and it's already in the regresison list.
 >
 > Same here. And both are AMD X2 early stepping machines.

 > A dropped workaround for the prefetch bug in early X2s and
 > Opterons. Patch below.

The patch cures it. Tested with rc5-git5, and it was 100%
reproducible here.

Markus
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Messages in current thread:
2.6.25-rc6: BUG: unable to handle kernel NULL pointer derefe..., Christian Kujau, (Tue Mar 25, 7:08 pm)
Re: 2.6.25-rc6: BUG: unable to handle kernel NULL pointer de..., Andrew Morton, (Wed Mar 26, 2:33 am)
Re: 2.6.25-rc6: BUG: unable to handle kernel NULL pointer de..., Thomas Gleixner, (Thu Mar 27, 11:20 am)
Re: 2.6.25-rc6: BUG: unable to handle kernel NULL pointer de..., Christian Kujau, (Thu Mar 27, 9:46 pm)
Re: 2.6.25-rc6: BUG: unable to handle kernel NULL pointer de..., Ingo Molnar, (Fri Mar 28, 6:25 am)
Re: 2.6.25-rc6: BUG: unable to handle kernel NULL pointer de..., Björn, (Thu Mar 27, 7:50 pm)
Re: 2.6.25-rc6: BUG: unable to handle kernel NULL pointer de..., Christian Kujau, (Fri Mar 28, 4:50 am)
Re: 2.6.25-rc6: BUG: unable to handle kernel NULL pointer de..., Markus Rehbach, (Thu Mar 27, 2:30 pm)
Re: 2.6.25-rc6: BUG: unable to handle kernel NULL pointer de..., Thomas Gleixner, (Thu Mar 27, 3:26 pm)
Re: 2.6.25-rc6: BUG: unable to handle kernel NULL pointer de..., Ingo Molnar, (Thu Mar 27, 11:26 am)
Re: 2.6.25-rc6: BUG: unable to handle kernel NULL pointer de..., Christian Kujau, (Wed Mar 26, 7:57 pm)
Re: 2.6.25-rc6: BUG: unable to handle kernel NULL pointer de..., Rafael J. Wysocki, (Wed Mar 26, 5:56 pm)