Messages in this thread | | | Date | Tue, 23 Oct 2018 11:49:08 -0400 | From | Sasha Levin <> | Subject | Re: [PATCH AUTOSEL 4.18 08/27] Input: evdev - add a schedule point in evdev_write() |
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On Mon, Oct 22, 2018 at 10:02:44AM -0700, Dmitry Torokhov wrote: >Hi Sasha, > >On Mon, Oct 22, 2018 at 06:19:05AM -0400, Sasha Levin wrote: >> From: Dmitry Torokhov <dmitry.torokhov@gmail.com> >> >> [ Upstream commit 36d2582ff235b4e01ad64a734c877a52dc762d9c ] >> >> Large writes to evdev interface may cause rcu stalls. Let's add >> cond_resched() to the loop to avoid this. > >This is not needed in stable: > >- the interfaces are not accessible for unprivileged users so there is > no DOS concerns >- the issue can only happen on non-preemptible kernels >- the issue only showed up with synthetic test and not real life use > cases >- this is not a regression > >The same goes to similar patches to mousedev, joydev and uinput that you >autoselected.
Dropped, thanks!
-- Thanks, Sasha
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