Theo Buehler writes:

> On Thu, Jun 07, 2018 at 11:23:20AM -0700, Philip Guenther wrote:
>> On Thu, 7 Jun 2018, Solene Rapenne wrote:
>> > >Synopsis: booting after hibernating loads and reboot
>> ...
>> >    Details     : OpenBSD 6.3-current (GENERIC.MP) #84: Tue Jun  5 19:22:09 
>> > MDT 2018
>> >                     
>> > dera...@amd64.openbsd.org:/usr/src/sys/arch/amd64/compile/GENERIC.MP
>> ...
>> >    When using ZZZ to hibernate, I can see that it writes to disk as
>> >    usual, then the computer shut down. Everything is alright.  At
>> >    boot, it uses /bsd.booted, the console display the usual loading
>> >    screen, and when it comes to the line looking like
>> >         "unhibernate @block" (it displays too fast), then the screen
>> >    goes black and after a few second, the computer reboot.
>>
>> Can you find and report the "OpenBSD 6.etc" log line in /var/log/messages*
>> from the previous kernel where hibernate + resume worked correctly?
>> That'll narrow down when the regression occurred.
>>
>> Depending on how long a range of time+builds that is, there are various
>> strategies for identifying the source of the failure...
>
> Perhaps Solene can do better than this, but I tested jsing's softraid
> unhibernate diff on June 2nd around noon UTC with a freshly updated cvs
> tree. At that point hibernate definitely worked.

By trying olders snapshots I've been able to pinpoint more precisely
when it started:

snapshot from 3rd june WORKS fine

OpenBSD 6.3-current (GENERIC.MP) #69: Sun Jun 3 10:40:09 MDT 2018


snapshot from 4th june trigger the issue

OpenBSD 6.3-current (GENERIC.MP) #78: Mon Jun 4 12:59:31 MDT 2018


I won't be able to work further on this in the coming days, so if
someone wants to find which commit added the regression, no problem :)

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