From: Sean Wang sean.wang@mediatek.com
[ Upstream commit 782b3e86ea970e899f8e723db9f64708a15ca30e ]
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 Signed-off-by: Felix Fietkau nbd@nbd.name Signed-off-by: Sasha Levin sashal@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 3f9097481a5e..d51ec8a550d8 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;