diff options
| author | Yang Yingliang <yangyingliang@huawei.com> | 2021-06-07 17:55:21 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-07-19 10:44:47 +0300 |
| commit | 278dc34b711227be81073b3d81ba81341c520842 (patch) | |
| tree | 82b26becaa1031584ed4c2052918097f7c0de118 | |
| parent | ce1307ec621bafc1f8263935179d301359c99585 (diff) | |
| download | linux-278dc34b711227be81073b3d81ba81341c520842.tar.xz | |
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>
| -rw-r--r-- | drivers/net/ethernet/micrel/ks8842.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/net/ethernet/micrel/ks8842.c b/drivers/net/ethernet/micrel/ks8842.c index caa251d0e381..b27713906d3a 100644 --- a/drivers/net/ethernet/micrel/ks8842.c +++ b/drivers/net/ethernet/micrel/ks8842.c @@ -1135,6 +1135,10 @@ 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; |