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Date: Mon, 22 Oct 2018 06:22:31 -0400 From: Sasha Levin <sashal@...nel.org> To: stable@...r.kernel.org, linux-kernel@...r.kernel.org Cc: Dmitry Torokhov <dmitry.torokhov@...il.com>, Sasha Levin <sashal@...nel.org> Subject: [PATCH AUTOSEL 4.4 4/5] Input: uinput - add a schedule point in uinput_inject_events() From: Dmitry Torokhov <dmitry.torokhov@...il.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@...ux.ibm.com> Signed-off-by: Dmitry Torokhov <dmitry.torokhov@...il.com> Signed-off-by: Sasha Levin <sashal@...nel.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 2bb4c8633d3b..459f3ce78235 100644 --- a/drivers/input/misc/uinput.c +++ b/drivers/input/misc/uinput.c @@ -454,6 +454,7 @@ 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
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