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Re: WARNING in agg-tx.c (3.5.7+, not tainted)

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On Wed, 2012-10-31 at 12:18 -0700, Ben Greear wrote:

> >> 	mutex_lock(&sta->ampdu_mlme.mtx);
> >> 	tid_tx = rcu_dereference_protected_tid_tx(sta, tid);
> >>
> >> 	if (WARN_ON(!tid_tx)) {
> >> #ifdef CONFIG_MAC80211_HT_DEBUG
> >> 		printk(KERN_DEBUG "addBA was not requested!\n");
> >> #endif
> >
> > Hm should probably be a WARN(), but ...
> >
> >>From the backtrace it looks like maybe you were tearing down the
> > interface? So maybe it's possible that you were remove it or something,
> > and the driver had just accepted the session? Hmm.
> 
> I've got 400 interfaces churning, some being reset due to lack of
> fast enough DHCP response, etc.  Could easily be related to that
> drv-remove-interface bug as well..

I didn't even think of that, but yeah, that seems possible.

> it is much more easily reproduced
> in this scenario.  Will re-run some tests with your suggested patch
> applied...

Ok cool.

johannes

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