Re: current: completely stuck after four minutes of uptime

[Andrew Doran <ad%netbsd.org@localhost>]

On Mon, Mar 16, 2020 at 11:14:38AM +0100, Lars Reichardt wrote:
> 
> On 2020-03-16 10:45, Thomas Klausner wrote:
> > On Sun, Mar 15, 2020 at 11:29:15AM +0100, Thomas Klausner wrote:
> > > I've just upgraded my 9.99.49 kernel from March 12 to today's from an
> > > hour ago.
> > > 
> > > After rebooting, the machine got stuck in less than five minutes.
> > > 
> > > No reaction to CTRL-ALT-ESC from the console, no reaction to pressing
> > > the power button.
> > This problem was still there with a kernel from last night.
> >   Thomas
> 
> 
> I've seen that behavior with a Thinkpad x201s i7 but not with my Ryzen 2700.
> 
> The Thinkpad locks somehow up can switch consoles capslock ok but processes
> seem stuck.
> 
> Top is not updating etc.
> 
> 
> The Ryzen seems completely unaffected running builds in the background with
> X11 running.

It sounds like the hanging systems make use of DRM/X11.  I fixed an issue
today that could have caused that:

	1.10 src/sys/uvm/pmap/pmap_pvt.c

Andrew