Hi,
> If i associate to a random AP "x" (what happened automatically as i
> was configured by ifup scripts to do that), and then scan and
> associate to my desired AP "y", i notice that AP "x" was not removed
> from the mac80211 station table. Then, what happened was that during
> ieee80211_stop, when we reach
>
> list_for_each_entry_rcu(sta, &local->sta_list, list) {
> if (sta->sdata == sdata)
> ieee80211_sta_tear_down_BA_sessions(dev, sta->addr);
> }
>
> we try to tear down sessions to irrelevant stations (AP "x" in my
> example), which leads to bugs.
Why would that lead to bugs? That station was known, and there are no
sessions for that AP.
> did i miss something, or is there really a problem in the state
> machine in the described scenario?
There might be a problem in that we forget to remove that AP under some
circumstances but it shouldn't matter, we always can have multiple
stations in our table.
johannes
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