Re: hid-related 5.2-rc1 boot hang

From: Benjamin Tissoires
Date: Tue May 28 2019 - 13:48:52 EST

On Tue, May 28, 2019 at 7:15 PM Jiri Kosina <jikos@xxxxxxxxxx> wrote:
> On Tue, 28 May 2019, Dave Hansen wrote:
> > I have a system that works fine on 5.1. When updating to 5.2-rc1, it
> > hangs at boot waiting on an instance of systemd-udevd. The kernel
> > backtrace ( looks like it's
> > doing an finit_module() that dives into the hid code and is waiting on a
> > request_module().
> Dave,
> thanks for the report.
> Just to confirm -- I guess reverting 4ceabaf79 and a025a18fe would work
> this around, right?

It would be also interesting to know which distribution and which
systemd version you are running (if you are on systemd).

This rings a bell as I recall playing with
request_module/request_firmware a while ago, but Hans convinced me
that no such delay would be induced.