I'll look in a bit - but > + mutex_unlock(&sta->ampdu_mlme.mtx); > ___ieee80211_stop_rx_ba_session( > sta, tid, WLAN_BACK_RECIPIENT, > WLAN_REASON_QSTA_TIMEOUT, true); This already has three underscores so shouldn't drop. > > + mutex_unlock(&sta->ampdu_mlme.mtx); > ___ieee80211_stop_rx_ba_session( ditto > + mutex_unlock(&sta->ampdu_mlme.mtx); > __ieee80211_start_rx_ba_session(sta, 0, 0, > 0, 1, tid, maybe this one needs a ___ version then? > + mutex_unlock(&sta->ampdu_mlme.mtx); > ___ieee80211_stop_rx_ba_session( > already ___ I'm surprised nobody saw this before - though perhaps Sebastian's useless report is the same. johannes