From: Dmitry Torokhov <dmitry.torokhov@xxxxxxxxx> [ Upstream commit 36d2582ff235b4e01ad64a734c877a52dc762d9c ] Large writes to evdev 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/evdev.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/input/evdev.c b/drivers/input/evdev.c index c81c79d01d93..718d5622267d 100644 --- a/drivers/input/evdev.c +++ b/drivers/input/evdev.c @@ -564,6 +564,7 @@ static ssize_t evdev_write(struct file *file, const char __user *buffer, input_inject_event(&evdev->handle, event.type, event.code, event.value); + cond_resched(); } out: -- 2.17.1
