[PATCH net-next 1/2] net: hns3: fix different snprintf() limit
From: Dan Carpenter <hidden>
Date: 2021-06-19 13:48:02
Also in:
kernel-janitors
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
This patch doesn't affect runtime at all, it's just a correctness issue.
The ptp->info.name[] buffer has 16 characters but the snprintf() limit
was capped at 32 characters. Fortunately, HCLGE_DRIVER_NAME is "hclge"
which isn't close to 16 characters so we're fine.
Fixes: 0bf5eb788512 ("net: hns3: add support for PTP")
Signed-off-by: Dan Carpenter <redacted>
---
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_ptp.c | 4 +---
1 file changed, 1 insertion(+), 3 deletions(-)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_ptp.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_ptp.c
index b3eb8f109dbb..3b1f84502e36 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_ptp.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_ptp.c@@ -415,8 +415,6 @@ int hclge_ptp_get_ts_info(struct hnae3_handle *handle, static int hclge_ptp_create_clock(struct hclge_dev *hdev) { -#define HCLGE_PTP_NAME_LEN 32 - struct hclge_ptp *ptp; ptp = devm_kzalloc(&hdev->pdev->dev, sizeof(*ptp), GFP_KERNEL);
@@ -424,7 +422,7 @@ static int hclge_ptp_create_clock(struct hclge_dev *hdev) return -ENOMEM; ptp->hdev = hdev; - snprintf(ptp->info.name, HCLGE_PTP_NAME_LEN, "%s", + snprintf(ptp->info.name, sizeof(ptp->info.name), "%s", HCLGE_DRIVER_NAME); ptp->info.owner = THIS_MODULE; ptp->info.max_adj = HCLGE_PTP_CYCLE_ADJ_MAX;
--
2.30.2