From: YueHaibing <yuehaibing@huawei.com>
To: <davem@davemloft.net>, <yisen.zhuang@huawei.com>,
<salil.mehta@huawei.com>, <lipeng321@huawei.com>
Cc: <linux-kernel@vger.kernel.org>, <netdev@vger.kernel.org>,
YueHaibing <yuehaibing@huawei.com>
Subject: [PATCH net-next] net: hns3: Fix potential NULL dereference on allocation error
Date: Fri, 25 Jan 2019 11:13:33 +0800 [thread overview]
Message-ID: <20190125031333.17196-1-yuehaibing@huawei.com> (raw)
hclge_mac_update_stats_complete doesn't check for NULL
returns of kcalloc, it may result in an Oops.
Fixes: d174ea75c96a ("net: hns3: add statistics for PFC frames and MAC control frames")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
---
drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
index 64b1589..7971606 100644
--- a/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
+++ b/drivers/net/ethernet/hisilicon/hns3/hns3pf/hclge_main.c
@@ -343,6 +343,9 @@ static int hclge_mac_update_stats_complete(struct hclge_dev *hdev, u32 desc_num)
int ret;
desc = kcalloc(desc_num, sizeof(struct hclge_desc), GFP_KERNEL);
+ if (!desc)
+ return -ENOMEM;
+
hclge_cmd_setup_basic_desc(&desc[0], HCLGE_OPC_STATS_MAC_ALL, true);
ret = hclge_cmd_send(&hdev->hw, desc, desc_num);
if (ret) {
--
2.7.0
next reply other threads:[~2019-01-25 3:14 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-25 3:13 YueHaibing [this message]
2019-01-28 16:47 ` [PATCH net-next] net: hns3: Fix potential NULL dereference on allocation error Salil Mehta
2019-02-01 3:15 ` YueHaibing
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