Subject: Re: kernel BUG at drivers/net/wireless/iwlwifi/iwl3945-base.c:3127!
From: reinette chatre <reinette.chatre@intel.com>
To: Jason Andryuk <jandryuk@gmail.com>
Cc: Samuel Ortiz <samuel@sortiz.org>, Tomas Winkler <tomasw@gmail.com>,
	"linux-wireless@vger.kernel.org" <linux-wireless@vger.kernel.org>
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	 <20090127162437.GA3596@sortiz.org>
	 <c4d76b3b0901271531q19578871idbc59b5a23ac868e@mail.gmail.com>
	 <1ba2fa240901272312j270eedb5x33534a9703d26e06@mail.gmail.com>
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Date: Wed, 04 Mar 2009 11:19:30 -0800
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On Tue, 2009-03-03 at 20:32 -0800, Jason Andryuk wrote:
> On Sun, Mar 1, 2009 at 10:37 PM, Jason Andryuk <jandryuk@gmail.com> wrote:
> > I tested c2a0aa3cb733452e749727680e380dca6cc10a68 "iwl3945: use
> > iwl_rb_status" with the additional patches to initialize rb_stts
> > (copied from iwl_rx_queue_alloc) and to convert the BUG_ON to a
> > WARN_ON.
> >
> > The driver runs without segfaulting.  So far the WARN_ON has not been
> > triggered, but the driver fails to finish authentication with the AP.
> > I receive "wlan0: authentication with AP 00:30:bd:c0:90:24 timed out"
> 
> Ok, I started poking around with manually checking interesting commits instead of git bisect.
> 
> 55b3e21... iwl3945: use iwl-io.h and delete iwl-3945-io.h with BUG->WARN patch works.
> 
> bb64785... iwlwifi: use iwl_cmd instead of iwl3945_cmd
> fails to authenticate to the AP.  It generates a Microcode SW Error attached below.
> 
> The previous revision:
> a0dedce... iwlwifi: replace IWL_ERROR with IWL_ERR
> Authenticates to the AP and works just fine.
> 
> I keep looking over commitdiff bb64785... but I cannot see what is causing problems.  I even tried modifying iwl3945_cmd in various ways from a0dedce... but those attempts kept working.
> 
> During testing, I saw a lot of UNKNOWN 0x1b
> [ 8892.625374] ieee80211 phy0: I iwl3945_rx_handle r = 162, i = 160, UNKNOWN, 0x1b
> Currently in the logs for commit a0dedce... it shows up as REPLY_3945_RX.
> 
> Any ideas?

Thank you very much for this digging. 

Are you running on 64bit?

Reinette