8.2-PRERELEASE freezing on reboot (-current OK)

[Arno J. Klaassen]

Jeremy Chadwick <freebsd at jdc.parodius.com> writes:

> On Tue, Dec 14, 2010 at 11:24:52PM +0100, Arno J. Klaassen wrote:
>> Andriy Gapon <avg at freebsd.org> writes:
>> 
>> > on 14/12/2010 02:38 Jeremy Chadwick said the following:
>> >> 1) 
>> > [snip]
>> >> Also try dropping to the
>> >> debugger via serial console (serial break) or VGA (Ctrl-Alt-Esc).
>> >
>> > This is a good advice.
>> 
>> may be ;-) but the box realy freezes, no way to drop into the debugger
>> nor via serial (ALT_BREAK_TO_DEBUGGER compiled as well) nor
>> via VGA/PS2 ... realy frozen
>
> Bummer.  It sounds like it's a regression of some kind, since your
> original mail stated this problem has been happening for you on RELENG_8
> (8.x) for quite some time.  (I have to assume it didn't happen for you
> at all on 7.3 or prior).

yop, build this box with some 7.X; it's a spare/development/test one,
doesn't get that much attention when problems, nor frequent reboots.
I noticed this problem at least some months ago (I track -stable on it
when I have time/envy) and adopted the anti-Murphy attitude (wait for
-RELEASE and recheck) 

> Would it be possible for you to dedicate some time narrowing down when
> the problem was introduced?
>
> A good starting point might be to try 8.0-RELEASE and then 8.1-RELEASE
> (just download + burn + boot livefs images and try that).  If it happens
> on 8.1-RELEASE but not 8.0, then we've at least narrowed down the
> timeframe.

I answered Attilio Rao <attilio at freebsd.org> in private on a patch he
sent me in order to get at least more info. I will test and let you, and
list, know the results.


> It might also be worth trying the same with 7.3-RELEASE vs. 7.4-BETA1
> (which just came out) see if the same bug was introduced there as result
> of an MFC.
>
> Otherwise, numerous csups with different date= strings in your supfiles
> and multiple buildworld/kernel/installs would be required.  I would
> probably pick intervals of 4 months at first.

Quite sure many 8-XXX worlds worked great on this box including reboots,
I will find the date window when things went wrong.

Merci, Arno