From: Yang Yingliang Date: Wed, 9 Jun 2021 13:25:15 +0000 (+0800) Subject: net: sgi: ioc3-eth: check return value after calling platform_get_resource() X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=db8f7be1e1d64fbf113a456ef94534fbf5e9a9af;p=linux.git 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 Signed-off-by: David S. Miller --- diff --git a/drivers/net/ethernet/sgi/ioc3-eth.c b/drivers/net/ethernet/sgi/ioc3-eth.c index 6eef0f45b133b..2b29fd4cbdf44 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 */