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Re: memory clobber in rx path, maybe related to ath9k.

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2010/10/13 BjÃrn Smedman <bjorn.smedman@xxxxxxxxxxx>:
> Hi Ben,
>
> First of all keep up the good work. :)
>
> On Wed, Oct 13, 2010 at 6:39 PM, Ben Greear <greearb@xxxxxxxxxxxxxxx> wrote:
> [snip]
>> Either way, it seems safer to null out the bf_ampdu field after
>> the memory is consumed..it could prevent some tricky bugs later.
>
> I think this is a good idea. But it probably wont be enough to null
> out bf_mpdu. You also need to look at bf_buf_addr (which if I
> understand correctly is the physical address the DMA engine will
> actually write RXed frames to) and bf_dmacontext (which seems in most
> cases to hold an identical address and may in fact be where the DMA
> engine will really write the frame).

See the TODO list for ath9k:

  * Remove this redundancy crap: bf->bf_buf_addr = bf->bf_dmacontext;

http://wireless.kernel.org/en/users/Drivers/ath9k/todo

  Luis
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