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

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[ Upstream commit 74325bf010 ]

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>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Yang Yingliang
2021-06-07 21:38:37 +08:00
committed by Greg Kroah-Hartman
parent 92820a1282
commit 49b3a7f38a
1 changed files with 4 additions and 0 deletions
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4
drivers/net/ethernet/broadcom/genet/bcmmii.c
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@@ -423,6 +423,10 @@ static int bcmgenet_mii_register(struct bcmgenet_priv *priv)
int id, ret;
pres = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!pres) {
dev_err(&pdev->dev, "Invalid resource\n");
return -EINVAL;
}
memset(&res, 0, sizeof(res));
memset(&ppd, 0, sizeof(ppd));