Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 4.18 09/27] Input: uinput - add a schedule point in uinput_inject_events() | Date | Mon, 22 Oct 2018 06:19:06 -0400 |
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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 96a887f33698..a7abab79a62f 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; -- 2.17.1
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