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| author |   Yang Yingliang <yangyingliang@huawei.com> | 2021-08-31 16:40:18 +0800 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2021-08-31 12:08:42 +0100 |
| commit | a39ff4a47f3e1da3b036817ef436b1a9be10783a (patch) | |
| tree | 8fef5e025d7d91f927d5ddd9b1c65e1ccb0ea37d /drivers/net/ethernet/wiznet | |
| parent | net/mlxbf_gige: Make use of devm_platform_ioremap_resourcexxx() (diff) | |
| download | linux-dev-a39ff4a47f3e1da3b036817ef436b1a9be10783a.tar.xz linux-dev-a39ff4a47f3e1da3b036817ef436b1a9be10783a.zip | |
net: w5100: 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 <yangyingliang@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/wiznet')
| -rw-r--r-- | drivers/net/ethernet/wiznet/w5100.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/net/ethernet/wiznet/w5100.c b/drivers/net/ethernet/wiznet/w5100.c index 811815f8cd3b..f974e70a82e8 100644 --- a/drivers/net/ethernet/wiznet/w5100.c +++ b/drivers/net/ethernet/wiznet/w5100.c @@ -1047,6 +1047,8 @@ static int w5100_mmio_probe(struct platform_device *pdev) mac_addr = data->mac_addr; mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!mem) + return -EINVAL; if (resource_size(mem) < W5100_BUS_DIRECT_SIZE) ops = &w5100_mmio_indirect_ops; else |