Fix possible NULL pointer dereference in mt7915_mac_fill_rx_vector
routine if the chip does not support dbdc and the hw reports band_idx
set to 1.
Fixes: 78fc30a21cf11 ("mt76: mt7915: move testmode data from dev to phy")
Signed-off-by: Lorenzo Bianconi <lorenzo@xxxxxxxxxx>
---
drivers/net/wireless/mediatek/mt76/mt7915/mac.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
index a8df65cc115f..5ccdfa89bef6 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
@@ -864,8 +864,11 @@ mt7915_mac_fill_rx_vector(struct mt7915_dev *dev, struct sk_buff *skb)
int i;
band_idx = le32_get_bits(rxv_hdr[1], MT_RXV_HDR_BAND_IDX);
- if (band_idx && !phy->band_idx)
+ if (band_idx && !phy->band_idx) {
phy = mt7915_ext_phy(dev);
+ if (!phy)
+ goto out;
+ }
rcpi = le32_to_cpu(rxv[6]);
ib_rssi = le32_to_cpu(rxv[7]);
@@ -890,8 +893,8 @@ mt7915_mac_fill_rx_vector(struct mt7915_dev *dev, struct sk_buff *skb)
phy->test.last_freq_offset = foe;
phy->test.last_snr = snr;
+out:
#endif
-
dev_kfree_skb(skb);
}
--
2.35.1
