* [PATCH -next] usb: misc: brcmstb-usb-pinmap: check return value after calling platform_get_resource()
@ 2021-06-05 8:09 Yang Yingliang
0 siblings, 0 replies; only message in thread
From: Yang Yingliang @ 2021-06-05 8:09 UTC (permalink / raw)
To: linux-kernel, linux-usb; +Cc: alcooperx, gregkh
It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.
Fixes: 517c4c44b323 ("usb: Add driver to allow any GPIO to be used for 7211 USB signals")
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
---
drivers/usb/misc/brcmstb-usb-pinmap.c | 2 ++
1 file changed, 2 insertions(+)
diff --git a/drivers/usb/misc/brcmstb-usb-pinmap.c b/drivers/usb/misc/brcmstb-usb-pinmap.c
index b3cfe8666ea7..336653091e3b 100644
--- a/drivers/usb/misc/brcmstb-usb-pinmap.c
+++ b/drivers/usb/misc/brcmstb-usb-pinmap.c
@@ -263,6 +263,8 @@ static int __init brcmstb_usb_pinmap_probe(struct platform_device *pdev)
return -EINVAL;
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
+ if (!r)
+ return -EINVAL;
pdata = devm_kzalloc(&pdev->dev,
sizeof(*pdata) +
--
2.25.1
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