From mboxrd@z Thu Jan  1 00:00:00 1970
From: Luis R. Rodriguez <lrodriguez@atheros.com>
Date: Thu, 22 Jan 2009 11:44:35 -0800
Subject: [ath9k-devel] modprobe ath9k == BUG: unable to handle
	kernel	NULL pointer dereference at 000001dc
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On Thu, Jan 22, 2009 at 11:19:00AM -0800, Joseph Cheek wrote:
> I just got a repro of this on 2.6.27.12 with compat-wireless
> 2009-01-19.  i'm going back to 2.6.27.11 with compat-wireless 2008-12-31
> to see if it is more stable (I never got the bug on that one).
> 
> here are the config_debug options i had on for this last strace.  please
> let me know what other options you would like me to turn on so i can
> make the trace more useful.
> 
> thanks!
> 
> Joseph Cheek
> 
> CONFIG_DEBUG_KERNEL=y
> CONFIG_DEBUG_PREEMPT=y
> CONFIG_DEBUG_BUGVERBOSE=y
> CONFIG_DEBUG_INFO=y
> CONFIG_DEBUG_MEMORY_INIT=y
> CONFIG_DEBUG_PAGEALLOC=y

These are good, CONFIG_DEBUG_INFO=y is what I was looking for too.
Not sure why you don't get what I expect. Try using ksymoops then,
or you can also just recompile using wireless-testing kernel directly:

http://wireless.kernel.org/en/developers/Documentation/git-guide

This has the latest RC kernel + all the wireless stuff we have queued up
for 2.6.30 (what compat-wireless picks up).

  Luis