On Thu, 30 Mar 2017, Andrey Chernov wrote:

On 30.03.2017 12:34, Andrey Chernov wrote:
On 30.03.2017 12:23, Andrey Chernov wrote:
Yes, only for reboot/shutdown. The system does not do anythings wrong
even under high load. On reboot or hang those lines are never printed:

kernel: Waiting (max 60 seconds) for system process `vnlru' to stop...done
kernel: Waiting (max 60 seconds) for system process `bufdaemon' to
stop...done
kernel: Waiting (max 60 seconds) for system process `syncer' to stop...
kernel: Syncing disks, vnodes remaining...5 3 0 1 0 0 done
kernel: All buffers synced.
(it is from 10-stable sample, old -current samples are lost)

Moreover, GELI swap deactivation lines are never printed too (I already
mention that I change swap to normal, but nothing is changed).

I start to have raw guess that _any_ kernel printf in shutdown mode
cause not printf but premature reboot.

Finally I have good news and bad news with today's -current:

1) It seems your latest commit r316136 fix premature reboot issue.

Now I need to know how that helped.  Do you used a non-default mode?
The change had 2 parts and I should have split it for testing.  It
fixes the window sizing and constructors.

2) I still can't enter KDB using Ctrl-Alt-ESC, while booting, after
booting, after login and while shutdown - nothing happens.
boot -d enters KDB normally, but the keyboard sequence handler is
broken, not boot -d.

Try "<newline>~b".  It is an old bug that Ctrl-Alt-ESC (and Ctrl-PrtScr)
are misconfigured by default.  But I think the misconfiguration is the
same for vt.  There are about 3 layers of options that have to be set
to "enable" or not set to "disable" to enable these keys.

Bruce
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