[PATCH v2 2/8] mt76: mt7921: fix memory leak in mt7921_coredump_work
From: Lorenzo Bianconi <lorenzo@kernel.org>
Date: 2021-02-19 17:29:56
Subsystem:
mediatek mt76 wireless lan driver, the rest · Maintainers:
Felix Fietkau, Lorenzo Bianconi, Ryder Lee, Linus Torvalds
From: Sean Wang <sean.wang@mediatek.com>
Fix possible memory leak in mt7921_coredump_work.
Fixes: 1c099ab44727c ("mt76: mt7921: add MCU support")
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
---
drivers/net/wireless/mediatek/mt76/mt7921/mac.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
index 9468c9c3b9cf..8befa8167cde 100644
--- a/drivers/net/wireless/mediatek/mt76/mt7921/mac.c
+++ b/drivers/net/wireless/mediatek/mt76/mt7921/mac.c@@ -1503,8 +1503,10 @@ void mt7921_coredump_work(struct work_struct *work) break; skb_pull(skb, sizeof(struct mt7921_mcu_rxd)); - if (data + skb->len - dump > MT76_CONNAC_COREDUMP_SZ) - break; + if (data + skb->len - dump > MT76_CONNAC_COREDUMP_SZ) { + dev_kfree_skb(skb); + continue; + } memcpy(data, skb->data, skb->len); data += skb->len;
--
2.29.2