New syscons bugs: shutdown -r doesn't execute rc.d sequence and others

[Andrey Chernov]

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.