[PATCH net 3/3] net: hns3: add a check for index in hclge_get_rss_key()
From: Huazhong Tan <hidden>
Date: 2021-02-09 09:11:23
Subsystem:
hisilicon network subsystem 3 driver (hns3), hisilicon network subsystem driver, networking drivers, the rest · Maintainers:
Jian Shen, Jijie Shao, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
From: Yufeng Mo <redacted>
The index is received from vf, if use it directly,
an out-of-bound issue may be caused, so add a check for
this index before using it in hclge_get_rss_key().
Fixes: a638b1d8cc87 ("net: hns3: fix get VF RSS issue")
Signed-off-by: Yufeng Mo <redacted>
Signed-off-by: Huazhong Tan <redacted>
---
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c | 11 +++++++++++
1 file changed, 11 insertions(+)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
index ea2dea99..ffb416e 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_mbx.c@@ -607,6 +607,17 @@ static void hclge_get_rss_key(struct hclge_vport *vport, index = mbx_req->msg.data[0]; + /* Check the query index of rss_hash_key from VF, make sure no + * more than the size of rss_hash_key. + */ + if (((index + 1) * HCLGE_RSS_MBX_RESP_LEN) > + sizeof(vport[0].rss_hash_key)) { + dev_warn(&hdev->pdev->dev, + "failed to get the rss hash key, the index(%u) invalid !\n", + index); + return; + } + memcpy(resp_msg->data, &hdev->vport[0].rss_hash_key[index * HCLGE_RSS_MBX_RESP_LEN], HCLGE_RSS_MBX_RESP_LEN);
--
2.7.4