[PATCH v3 02/11] mt76 - mt7915: Fix potential NPE in TXS processing.
From: <hidden>
Date: 2021-07-23 16:06:51
Subsystem:
mediatek mt76 wireless lan driver, the rest · Maintainers:
Felix Fietkau, Lorenzo Bianconi, Ryder Lee, Linus Torvalds
From: Ben Greear <redacted> If skb is null, then don't try to dereference it. Signed-off-by: Ben Greear <redacted> --- drivers/net/wireless/mediatek/mt76/mt7915/mac.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
index 35e4b57bd133..3f4e19358d5b 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7915/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7915/mac.c@@ -1321,7 +1321,7 @@ mt7915_mac_add_txs_skb(struct mt7915_dev *dev, struct mt76_wcid *wcid, int pid, /* TODO: Gather stats anyway, even if we are not matching on an skb. */ if (!skb) - goto out; + goto out_no_skb; txs = le32_to_cpu(txs_data[0]); txs5 = le32_to_cpu(txs_data[5]);
@@ -1434,6 +1434,8 @@ mt7915_mac_add_txs_skb(struct mt7915_dev *dev, struct mt76_wcid *wcid, int pid, out: mt76_tx_status_skb_done(mdev, skb, &list, wcid); + +out_no_skb: mt76_tx_status_unlock(mdev, &list); return !!skb;
--
2.20.1