Re: ipfw uid/gid rules and mpsafenet (Re: PREEMPTION still unusable with 6.0-RC1)

On Sat, 2005-10-22 at 14:33 -0400, Kris Kennaway wrote:
> On Sat, Oct 22, 2005 at 07:45:37PM +0400, Gleb Smirnoff wrote:
> > On Fri, Oct 21, 2005 at 09:17:29AM +0200, Stefan Ehmann wrote:
> > S> I recently upgraded my 5.4-RELEASE machine to 6.0-RC1. Runs fine so far
> > S> if I disable PREEMPTION.
> > S> 
> > S> With PREEMPTION enabled, I still get the same issues as described here:
> > S> http://lists.freebsd.org/pipermail/freebsd-current/2004-September/037949.html
> > S> 
> > S> kernel config:
> > S> http://stud4.tuwien.ac.at/~e0125637/fbsd/kernconf-6.0-RC1
> > S> 
> > S> /var/log/messages output:
> > S> http://stud4.tuwien.ac.at/~e0125637/fbsd/messages-6.0-RC1
> > S> 
> > S> Any one else still experiencing these problems or has any idea what
> > S> causes this?
> > S> 
> > S> BTW, are 6.0 discussions supposed to go to stable_at_ once 6.0 is released?
> > 
> > AFAIK, the uid/gid rules in ipfw(8) require debug.mpsafenet=0. So
> > your deadlock isn't a surprise. I wonder why this limitation isn't
> > documented.
> 
> Yeah, and ipfw(8) should refuse to add them if it's =1, or at least
> display a warning.

For me it works with
- mpsafenet=1 and no preemption
- mpsafenet=0 and preemption

Maybe the notes that were deleted in /src/sbin/ipfw/ipfw.8 rev 1.160
should be added again? (or documented elsewhere at least)

Stefan