From: Huazhong Tan tanhuazhong@huawei.com
[ Upstream commit 73b907a083b8a8c1c62cb494bc9fbe6ae086c460 ]
When hns3_get_ring_config()/hns3_queue_to_ring()/ hns3_get_vector_ring_chain() failed during resetting, the allocated memory has not been freed before these three functions return. So this patch adds error handler in these functions to fix it.
Fixes: 76ad4f0ee747 ("net: hns3: Add support of HNS3 Ethernet Driver for hip08 SoC") Signed-off-by: Huazhong Tan tanhuazhong@huawei.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- .../net/ethernet/hisilicon/hns3/hns3_enet.c | 24 ++++++++++++++++--- 1 file changed, 21 insertions(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c index 0ccfa6a845353..c1873e04b0fb6 100644 --- a/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c +++ b/drivers/net/ethernet/hisilicon/hns3/hns3_enet.c @@ -2558,7 +2558,7 @@ static int hns3_get_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector, chain = devm_kzalloc(&pdev->dev, sizeof(*chain), GFP_KERNEL); if (!chain) - return -ENOMEM; + goto err_free_chain;
cur_chain->next = chain; chain->tqp_index = tx_ring->tqp->tqp_index; @@ -2588,7 +2588,7 @@ static int hns3_get_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector, while (rx_ring) { chain = devm_kzalloc(&pdev->dev, sizeof(*chain), GFP_KERNEL); if (!chain) - return -ENOMEM; + goto err_free_chain;
cur_chain->next = chain; chain->tqp_index = rx_ring->tqp->tqp_index; @@ -2603,6 +2603,16 @@ static int hns3_get_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector, }
return 0; + +err_free_chain: + cur_chain = head->next; + while (cur_chain) { + chain = cur_chain->next; + devm_kfree(&pdev->dev, chain); + cur_chain = chain; + } + + return -ENOMEM; }
static void hns3_free_vector_ring_chain(struct hns3_enet_tqp_vector *tqp_vector, @@ -2847,8 +2857,10 @@ static int hns3_queue_to_ring(struct hnae3_queue *tqp, return ret;
ret = hns3_ring_get_cfg(tqp, priv, HNAE3_RING_TYPE_RX); - if (ret) + if (ret) { + devm_kfree(priv->dev, priv->ring_data[tqp->tqp_index].ring); return ret; + }
return 0; } @@ -2875,6 +2887,12 @@ static int hns3_get_ring_config(struct hns3_nic_priv *priv)
return 0; err: + while (i--) { + devm_kfree(priv->dev, priv->ring_data[i].ring); + devm_kfree(priv->dev, + priv->ring_data[i + h->kinfo.num_tqps].ring); + } + devm_kfree(&pdev->dev, priv->ring_data); return ret; }