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wifi: mt76: add missing locking to protect against concurrent rx/status calls

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According to the documentation, ieee80211_rx_list must not run concurrently
with ieee80211_tx_status (or its variants).

Cc: [email protected]
Fixes: 88046b2c9f6d ("mt76: add support for reporting tx status with skb")
Reported-by: Brian Coverstone <[email protected]>
Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Felix Fietkau
2023-04-17 15:46:10 +02:00
parent 22f1b7776d
commit d63cb85c12
5 changed files with 18 additions and 3 deletions
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mt7603/mac.c
+4 -1
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@@ -1279,8 +1279,11 @@ void mt7603_mac_add_txs(struct mt7603_dev *dev, void *data)
if (wcidx >= MT7603_WTBL_STA || !sta)
goto out;
if (mt7603_fill_txs(dev, msta, &info, txs_data))
if (mt7603_fill_txs(dev, msta, &info, txs_data)) {
spin_lock_bh(&dev->mt76.rx_lock);
ieee80211_tx_status_noskb(mt76_hw(dev), sta, &info);
spin_unlock_bh(&dev->mt76.rx_lock);
}
out:
rcu_read_unlock();