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fjes: check return value after calling platform_get_resource()
author
Yang Yingliang
<yangyingliang@huawei.com>
Thu, 10 Jun 2021 08:02:43 +0000
(16:02 +0800)
committer
David S. Miller
<davem@davemloft.net>
Thu, 10 Jun 2021 20:53:13 +0000
(13:53 -0700)
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>
drivers/net/fjes/fjes_main.c
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diff --git
a/drivers/net/fjes/fjes_main.c
b/drivers/net/fjes/fjes_main.c
index d098b1fcf0067b1c9b09b88fe8671cc6b042b043..185c8a3986816ad02eae84ad8e05b126786d2477 100644
(file)
--- a/
drivers/net/fjes/fjes_main.c
+++ b/
drivers/net/fjes/fjes_main.c
@@
-1254,6
+1254,10
@@
static int fjes_probe(struct platform_device *plat_dev)
adapter->interrupt_watch_enable = false;
res = platform_get_resource(plat_dev, IORESOURCE_MEM, 0);
+ if (!res) {
+ err = -EINVAL;
+ goto err_free_control_wq;
+ }
hw->hw_res.start = res->start;
hw->hw_res.size = resource_size(res);
hw->hw_res.irq = platform_get_irq(plat_dev, 0);