On 2018-10-02 01:22, Toke Høiland-Jørgensen wrote:
> Rajkumar Manoharan <rmanohar@codeaurora.org> writes:
> 
>>> Great! I'll fold in the rest, test it with ath9k and submit as a 
>>> proper
>>> patch :)
>>> 
>> Toke,
>> 
>> I noticed a race condition b/w sta cleanup and kick_airtime tasklet.
>> How do you plan to exit kick_airtime gracefully during sta_cleanup?
> 
> Ah, right, there's a lot of stuff going on before we get to purge_txq.
> Hmm, I guess we should either make sure we remove the station from
> active_txqs earlier in the sta cleanup process, or maybe it'd enough to
> just check the removed flag in the tasklet?
> 
> Does the below patch fix the issue?
> 

No. Attaching backtrace. Any clue?

-Rajkumar