If the radio was previously in running state, it can receive some packets before it is able to process them. This can lead to a crash if the channel is not initialized yet. Discard all rx packets until start() is called
Signed-off-by: Felix Fietkau <[email protected]> --- drivers/net/wireless/mediatek/mt76/mt76x2_mac.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/net/wireless/mediatek/mt76/mt76x2_mac.c b/drivers/net/wireless/mediatek/mt76/mt76x2_mac.c index dab713756004..b49aea4da2d6 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76x2_mac.c +++ b/drivers/net/wireless/mediatek/mt76/mt76x2_mac.c @@ -301,6 +301,9 @@ int mt76x2_mac_process_rx(struct mt76x2_dev *dev, struct sk_buff *skb, u8 wcid; int len; + if (!test_bit(MT76_STATE_RUNNING, &dev->mt76.state)) + return -EINVAL; + if (rxinfo & MT_RXINFO_L2PAD) pad_len += 2; -- 2.17.0
