Commit 662bfdea authored Jun 07, 2021 by Yang Yingliang Committed by Greg Kroah-Hartman Jul 20, 2021

net: mvpp2: check return value after calling platform_get_resource()



[ Upstream commit 0bb51a3a385790a4be20085494cf78f70dadf646 ]

It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.

Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>

parent 09846c29

drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -5157,6 +5157,10 @@ static int mvpp2_probe(struct platform_device *pdev)
		return PTR_ERR(priv->lms_base);
		} else {
		res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
		if (!res) {
		dev_err(&pdev->dev, "Invalid resource\n");
		return -EINVAL;
		}
		if (has_acpi_companion(&pdev->dev)) {
		/* In case the MDIO memory region is declared in
		* the ACPI, it can already appear as 'in-use'