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Message-ID: <20210609132515.2701394-1-yangyingliang@huawei.com>
Date: Wed, 9 Jun 2021 21:25:15 +0800
From: Yang Yingliang <yangyingliang@...wei.com>
To: <linux-kernel@...r.kernel.org>, <netdev@...r.kernel.org>
CC: <ralf@...ux-mips.org>, <davem@...emloft.net>, <kuba@...nel.org>
Subject: [PATCH net-next] net: sgi: ioc3-eth: check return value after calling platform_get_resource()
It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.
Signed-off-by: Yang Yingliang <yangyingliang@...wei.com>
---
drivers/net/ethernet/sgi/ioc3-eth.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c
index 6eef0f45b133..2b29fd4cbdf4 100644
--- a/drivers/net/ethernet/sgi/ioc3-eth.c
+++ b/drivers/net/ethernet/sgi/ioc3-eth.c
@@ -835,6 +835,10 @@ static int ioc3eth_probe(struct platform_device *pdev)
int err;
regs = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!regs) {
+ dev_err(&pdev->dev, "Invalid resource\n");
+ return -EINVAL;
+ }
/* get mac addr from one wire prom */
if (ioc3eth_get_mac_addr(regs, mac_addr))
return -EPROBE_DEFER; /* not available yet */
--
2.25.1
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