From: Lorenzo Bianconi lorenzo@kernel.org
[ Upstream commit 1b88b47e898edef0e56e3a2f4e49f052a136153d ]
Free rx_head skb in mt76_dma_rx_cleanup routine in order to avoid possible memory leak at module unload.
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/dma.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-)
diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c index dee4449de9082..d147dc698c9db 100644 --- a/drivers/net/wireless/mediatek/mt76/dma.c +++ b/drivers/net/wireless/mediatek/mt76/dma.c @@ -737,6 +737,7 @@ mt76_dma_rx_cleanup(struct mt76_dev *dev, struct mt76_queue *q) return;
spin_lock_bh(&q->lock); + do { buf = mt76_dma_dequeue(dev, q, true, NULL, NULL, &more, NULL); if (!buf) @@ -744,6 +745,12 @@ mt76_dma_rx_cleanup(struct mt76_dev *dev, struct mt76_queue *q)
skb_free_frag(buf); } while (1); + + if (q->rx_head) { + dev_kfree_skb(q->rx_head); + q->rx_head = NULL; + } + spin_unlock_bh(&q->lock);
if (!q->rx_page.va) @@ -769,12 +776,6 @@ mt76_dma_rx_reset(struct mt76_dev *dev, enum mt76_rxq_id qid) mt76_dma_rx_cleanup(dev, q); mt76_dma_sync_idx(dev, q); mt76_dma_rx_fill(dev, q); - - if (!q->rx_head) - return; - - dev_kfree_skb(q->rx_head); - q->rx_head = NULL; }
static void