If 'ep' is NULL, result of ep_to_cdns3_ep(ep) is invalid and priv_ep->cdns3_dev causes panic. Found by Linux Verification Center (linuxtesting.org) with SVACE. Signed-off-by: Andrey Strachuk <strochuk@xxxxxxxxx> Fixes: 7733f6c32e36 ("usb: cdns3: Add Cadence USB3 DRD Driver") --- drivers/usb/cdns3/cdns3-gadget.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/usb/cdns3/cdns3-gadget.c b/drivers/usb/cdns3/cdns3-gadget.c index 5c15c48952a6..51de7457a3b8 100644 --- a/drivers/usb/cdns3/cdns3-gadget.c +++ b/drivers/usb/cdns3/cdns3-gadget.c @@ -2284,11 +2284,14 @@ static int cdns3_gadget_ep_enable(struct usb_ep *ep, int ret = 0; int val; + if (!ep) + return -EINVAL; + priv_ep = ep_to_cdns3_ep(ep); priv_dev = priv_ep->cdns3_dev; comp_desc = priv_ep->endpoint.comp_desc; - if (!ep || !desc || desc->bDescriptorType != USB_DT_ENDPOINT) { + if (!desc || desc->bDescriptorType != USB_DT_ENDPOINT) { dev_dbg(priv_dev->dev, "usbss: invalid parameters\n"); return -EINVAL; } -- 2.25.1