Commit ca099038 authored Jun 07, 2021 by Yang Yingliang Committed by Greg Kroah-Hartman Jul 20, 2021

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



[ Upstream commit 20f1932e2282c58cb5ac59517585206cf5b385ae ]

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 013642e6

drivers/net/ethernet/micrel/ks8842.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -1150,6 +1150,10 @@ static int ks8842_probe(struct platform_device *pdev)
		unsigned i;

		iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
		if (!iomem) {
		dev_err(&pdev->dev, "Invalid resource\n");
		return -EINVAL;
		}
		if (!request_mem_region(iomem->start, resource_size(iomem), DRV_NAME))
		goto err_mem_region;