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From: Christian Lamparter <chunkeey@googlemail.com>
To: Blaise Gassend <blaise@willowgarage.com>
Subject: Re: General protection fault in ieee80211_stop_tx_ba_sessions
Date: Sat, 16 Oct 2010 00:37:06 +0200
Cc: linux-wireless@vger.kernel.org
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On Saturday 16 October 2010 00:20:19 Blaise Gassend wrote:
> I have been getting a general protection fault in
> ieee80211_stop_tx_ba_sessions. This mostly seems to happen within a
> few tens of seconds of bringing the interface up.
> 
> I am pasting a backtrace and system information below below. What
> other information would be useful to help track this down?
>
> Kernel:
> Linux version 2.6.32-24-generic (buildd@crested) (gcc version 4.4.3
> (Ubuntu 4.4.3-4ubuntu5) ) #42-Ubuntu SMP Fri Aug 20 14:21:58 UTC 2010
> 
> Wireless:
> compat-wireless-2010-10-04
please update, because it looks like your problem could be fixed by:
"mac80211: delete AddBA response timer" (2010-10-05)
http://www.spinics.net/lists/linux-wireless/msg56886.html

> Backtrace (Keeps spewing for a really long time, I can provide more if
> necessary):
> general protection fault: 0000 [#1] SMP
> RIP: 0010:[<xyz>]  [<xyz>] ieee80211_stop_tx_ba_session+0x35/0xd0 [mac80211]
> Process swapper (pid: 0, threadinfo ffff88013392e000,
> Call Trace:
>  <IRQ>
>  [<81019e69>] ? sched_clock+0x9/0x10
>  [<a0120a40>] ? sta_addba_resp_timer_expired+0x0/0x50 [mac80211] <<<
>  [<a0120a87>] ? sta_addba_resp_timer_expired+0x47/0x50 [mac80211]
>  [<8107776b>] ? run_timer_softirq+0x19b/0x340
>  [<812b92bd>] ? rb_insert_color+0x9d/0x160
>  [<8108f723>] ? ktime_get+0x63/0xe0