8.0RC2 amd64 - kernel panic running make buildworld

[Gary Jennejohn]

On Thu, 05 Nov 2009 21:34:23 +0300
S.N.Grigoriev <serguey-grigoriev at yandex.ru> wrote:

> 
> 
> 05.11.09, 18:49, "Gary Jennejohn" <gary.jennejohn at freenet.de>:
> 
> > On Thu, 05 Nov 2009 19:40:03 +0300
> > S.N.Grigoriev  wrote:
> > > 
> > > 04.11.09, 16:51, "Alexandre \"Sunny\" Kovalenko" 
> > > wrote:
> > > 
> > > > On Wed, 2009-11-04 at 13:44 +0300, S.N.Grigoriev wrote:
> > > > > Hi list,
> > > > > 
> > > > > I can confirm I've seen the same problem. After upgrading from 7-stable
> > > > > to 8.0-RC2 my machine just reboots during 'make buildworld' without
> > > > > diagnostics. But switching vm.pmap.pg_ps_enabled on/off does not
> > > > > work for me. My machine reboots every time I try to build world.
> > > > > I don't think I have a hardware problem: under 7-stable I can build
> > > > > world/kernel for both 7-stable and 8.0-RC2 without problems.
> > > > > 
> > > > Is it by any chance possible that you have 'debug.debugger_on_panic' set
> > > > to '0' and no valid dump device configured?
> > > 
> > > Hi Alexandre,
> > > 
> > > I've not found 'debug.debugger_on_panic' variable in 'sysctl -a'
> > > output. Where cat I find it? All my sysctl variables are set by
> > > default.
> > Do you have "options DDB" in your kernel config file?
> > ---
> > Gary Jennejohn
> 
> Hi Gary,
> 
> my current kernel is GENERIC, so I don't have "options DDB".
>

Well, you need that option to see the DDB (debug) sysctl's.

---
Gary Jennejohn