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Date: Wed, 29 Jul 2009 21:36:44 -0700
From: "Philip A. Prindeville" <philipp_subx@redfish-solutions.com>
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To: Bob Copeland <me@bobcopeland.com>
CC: "Luis R. Rodriguez" <mcgrof@gmail.com>,
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Subject: Re: Using compat-wireless w/ 2.6.27.26
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Bob Copeland wrote:
> On Thu, Jul 23, 2009 at 6:45 PM, Philip A.
> Prindeville<philipp_subx@redfish-solutions.com> wrote:
>> Bob Copeland wrote:
>>> On Thu, Jul 23, 2009 at 5:53 PM, Philip A.
>>> Prindeville<philipp_subx@redfish-solutions.com> wrote:
>>>>> Getting closer :-)
>>>>>
>>>>> ath5k_tx_processq(sc, &sc->txqs[i]);
>>>>>
>>>> Didn't work with rc4:
>>> What did you apply against?  It's supposed to be against
>>> wireless-testing (or, at worst, latest compat-wireless).
>>>
>>>> BUG: unable to handle kernel NULL pointer dereference at 00000000
>>>> IP: [<d0935658>] :ath5k:ath5k_tasklet_tx+0x5e/0x27b
> 
>> This was against compat-wireless-2.6.31-rc4.
>>
>> Alas, I already blew away the build directory...
> 
> I think you need to use the unstable compat-wireless snapshots;
> I have a feeling that the above doesn't have all of the tx queues.
> 
> Check out ath5k.h, the txq array in struct ath5k_softc should have
> NUM_TX_QUEUES entries, an earlier version only had 2.
> 
> Although your compiler generates rather different code from mine
> (different config or whatever), it looks like the oops happened
> in the list_for_each_entry(... txq->q ...) -- but I don't see how
> that can happen in my copy, since txq[i].q is initialized at the
> same time as txq[i].setup.
> 

Give me a shout when this patch makes its way into compat-wireless-2.6.31-rcN and I'll try again with that.

-Philip