In case usb_alloc_coherent fails, the fix returns -ENOMEM to avoid a potential NULL pointer dereference. Signed-off-by: Kangjie Lu <kjlu@xxxxxxx> --- drivers/media/usb/usbvision/usbvision-core.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/media/usb/usbvision/usbvision-core.c b/drivers/media/usb/usbvision/usbvision-core.c index 31e0e98d6daf..1b0d0a0f0e87 100644 --- a/drivers/media/usb/usbvision/usbvision-core.c +++ b/drivers/media/usb/usbvision/usbvision-core.c @@ -2302,6 +2302,9 @@ int usbvision_init_isoc(struct usb_usbvision *usbvision) sb_size, GFP_KERNEL, &urb->transfer_dma); + if (!usbvision->sbuf[buf_idx].data) + return -ENOMEM; + urb->dev = dev; urb->context = usbvision; urb->pipe = usb_rcvisocpipe(dev, usbvision->video_endp); -- 2.17.1
