From: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> [ Upstream commit cecf10704899467a787975e3d94a1f0129b9688e ] Large writes to uinput interface may cause rcu stalls. Let's add cond_resched() to the loop to avoid this. Reviewed-by: Paul E. McKenney <paulmck@xxxxxxxxxxxxx> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx> --- 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 443151de90c6..13d17e85f2cf 100644 --- a/drivers/input/misc/uinput.c +++ b/drivers/input/misc/uinput.c @@ -561,6 +561,7 @@ 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; -- 2.17.1
