Commit e4ce9ed835bc ("usb: gadget: uvc: ensure the vdev is unset") introduced code to clear the video device on video device registration. However, it uses sizeof(uvc->video) instead of sizeof(uvc->vdev) to clear uvc->vdev. This may result in the following build error. In function 'fortify_memset_chk', inlined from 'uvc_register_video' at drivers/usb/gadget/function/f_uvc.c:424:2: include/linux/fortify-string.h:301:25: error: call to '__write_overflow_field' declared with attribute warning: detected write beyond size of field The problem is exposed by commit 9b91a6523078 ("usb: gadget: uvc: increase worker prio to WQ_HIGHPRI") which increases the size of struct uvc_video. Fixes: e4ce9ed835bc ("usb: gadget: uvc: ensure the vdev is unset") Cc: Michael Grzeschik <m.grzeschik@xxxxxxxxxxxxxx> Signed-off-by: Guenter Roeck <linux@xxxxxxxxxxxx> --- drivers/usb/gadget/function/f_uvc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/gadget/function/f_uvc.c b/drivers/usb/gadget/function/f_uvc.c index e6948cf8def3..836601227155 100644 --- a/drivers/usb/gadget/function/f_uvc.c +++ b/drivers/usb/gadget/function/f_uvc.c @@ -421,7 +421,7 @@ uvc_register_video(struct uvc_device *uvc) int ret; /* TODO reference counting. */ - memset(&uvc->vdev, 0, sizeof(uvc->video)); + memset(&uvc->vdev, 0, sizeof(uvc->vdev)); uvc->vdev.v4l2_dev = &uvc->v4l2_dev; uvc->vdev.v4l2_dev->dev = &cdev->gadget->dev; uvc->vdev.fops = &uvc_v4l2_fops; -- 2.36.2