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Date: Sun, 15 Feb 2009 18:02:15 +0100
From: Frederic Weisbecker <fweisbec@gmail.com>
To: Sitsofe Wheeler <sitsofe@yahoo.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Poking ieee80211_default_rc_algo causes kernel lockups
Message-ID: <20090215170214.GK5835@nowhere>
References: <slrngpgfil.5gc.sitsofe@sitsofe.eeepc.localdomain>
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On Sun, Feb 15, 2009 at 04:09:57PM +0000, Sitsofe Wheeler wrote:
> Hi,
> 
> As mentioned on
> http://groups.google.com/group/fa.linux.kernel/browse_frm/thread/d4a6ce26360613fa/b362792a2debced6?#b362792a2debced6
> , poking /sys/module/mac80211/parameters/ieee80211_default_rc_algo and
> then trying to read values back is currently causing the kernel to go
> funny. E.g.
> echo blah > /sys/module/mac80211/parameters/ieee80211_default_rc_algo
> cat /sys/module/mac80211/parameters/ieee80211_default_rc_algo
> 
> Causes 2.6.29rc5 on my EeePC 900 to lock up.
> 
> -- 
> Sitsofe


Hi,

I'm currently building a 2.6.29-rc5 with CONFIG_MAC80211 enabled
to test it.

Could you please enable the CONFIG_DETECT_SOFTLOCKUP option in your kernel?
It's on Kernel Hacking > Detect Soft Lockups.
With some chances you will have a relevant stacktrace of the lockup, in case
I couldn't reproduce it.

 
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