linux-kernel - Re: hung task in mac80211

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Date:   Wed, 06 Sep 2017 14:48:35 +0200
From:   Johannes Berg <johannes@...solutions.net>
To:     Stefano Brivio <sbrivio@...hat.com>,
        Matteo Croce <mcroce@...hat.com>
Cc:     linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: hung task in mac80211

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