diff options
| author | Yang Yingliang <yangyingliang@huawei.com> | 2021-08-31 16:42:36 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-10-09 14:09:46 +0200 |
| commit | 4b7f4a0eb92bf37bea4cd838c7f83ea42823ca8b (patch) | |
| tree | 6dd40876ac51b40d45acb0d81aa47e9f4e6d4955 /drivers | |
| parent | 02ac2b3b9bfa7c227afb5b4534d3efd29dad393c (diff) | |
usb: dwc2: check return value after calling platform_get_resource()
[ Upstream commit 856e6e8e0f9300befa87dde09edb578555c99a82 ]
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>
Link: https://lore.kernel.org/r/20210831084236.1359677-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/usb/dwc2/hcd.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/hcd.c b/drivers/usb/dwc2/hcd.c index ef7f3b013fcb..ba7528916da4 100644 --- a/drivers/usb/dwc2/hcd.c +++ b/drivers/usb/dwc2/hcd.c @@ -5229,6 +5229,10 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg) hcd->has_tt = 1; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!res) { + retval = -EINVAL; + goto error1; + } hcd->rsrc_start = res->start; hcd->rsrc_len = resource_size(res); |