From: Dmitry Torokhov dmitry.torokhov@gmail.com
[ 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@linux.ibm.com Signed-off-by: Dmitry Torokhov dmitry.torokhov@gmail.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 022be0e22eba..d015fd7151c1 100644 --- a/drivers/input/misc/uinput.c +++ b/drivers/input/misc/uinput.c @@ -540,6 +540,7 @@ 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;