From mboxrd@z Thu Jan 1 00:00:00 1970 From: Dmitry Torokhov Subject: [PATCH] Input: uinput - add a schedule point in uinput_inject_events() Date: Thu, 4 Oct 2018 17:54:32 -0700 Message-ID: <20181005005432.GA218507@dtor-ws> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Return-path: Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org To: linux-input@vger.kernel.org Cc: Eric Dumazet , "Paul E. McKenney" , linux-kernel@vger.kernel.org List-Id: linux-input@vger.kernel.org Large writes to uinput interface may cause rcu stalls. Let's add cond_resched() to the loop to avoid this. Signed-off-by: Dmitry Torokhov --- 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 eb14ddf69346..8ec483e8688b 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; -- 2.19.0.605.g01d371f741-goog -- Dmitry