Sometimes the hardware will push small packets that trigger a WARN_ON in mac80211. Discard them early to avoid this issue.
Reported-by: Stijn Tintel <[email protected]> Signed-off-by: Felix Fietkau <[email protected]> --- drivers/net/wireless/ath/ath9k/recv.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/net/wireless/ath/ath9k/recv.c b/drivers/net/wireless/ath/ath9k/recv.c index 2197aee2bb72..a8ac42c96d71 100644 --- a/drivers/net/wireless/ath/ath9k/recv.c +++ b/drivers/net/wireless/ath/ath9k/recv.c @@ -826,9 +826,9 @@ static int ath9k_rx_skb_preprocess(struct ath_softc *sc, sc->rx.discard_next = false; /* - * Discard zero-length packets. + * Discard zero-length packets and packets smaller than an ACK */ - if (!rx_stats->rs_datalen) { + if (rx_stats->rs_datalen < 10) { RX_STAT_INC(rx_len_err); goto corrupt; } -- 2.14.2
