On Thu, Oct 04, 2018 at 05:54:32PM -0700, Dmitry Torokhov wrote: > Large writes to uinput interface may cause rcu stalls. Let's add > cond_resched() to the loop to avoid this. > > Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> Reviewed-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxx> > --- > drivers/input/misc/uinput.c | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/drivers/input/misc/uinput.c b/drivers/input/misc/uinput.c > index eb14ddf69346..8ec483e8688b 100644 > --- a/drivers/input/misc/uinput.c > +++ b/drivers/input/misc/uinput.c > @@ -598,6 +598,7 @@ static ssize_t uinput_inject_events(struct uinput_device *udev, > > input_event(udev->dev, ev.type, ev.code, ev.value); > bytes += input_event_size(); > + cond_resched(); > } > > return bytes; > -- > 2.19.0.605.g01d371f741-goog > > > -- > Dmitry >
