Re: panic: uma_zone_slab is looping

On Tue, Dec 28, 2004 at 09:47:31AM +0100, Peter Holm wrote:
> On Sun, Dec 26, 2004 at 11:02:16PM -0500, Bosko Milekic wrote:
> > >   I'll have to reserve some more time to think about this.  One way I
> > >   think it might be solvable would be to change that check that
> > >   triggers the NULL return explicitly check for the bucketzone, and not
> > >   for all UMA_ZONE_INTERNAL zones; I need to think this through a little
> > >   more.
> > 
> >   Please try the attached patch and let me know if with it you can or
> >   cannot trigger the original (seemingly infinite) looping.  Although I
> >   still haven't quite figured out how the described scenario could lead
> >   to infinite looping exactly (I did conclude that it could lead to some
> >   looping, though), the patch is worth trying as I believe the scenario
> >   *could* occur.
> > 
> 
> After more than 18 hours of testing with your patch I ran into a
> (unrelated ?) "panic: mutex vm object not owned":
> http://www.holm.cc/stress/log/freeze06.html

  Your other (private) Email to me mentions that another developer has
  claimed this one.  If/when he fixes it, it would be worthwhile to give
  it another consecutive 18 hours before we decide that "yes, it's good
  and it works."  I am optimistic, but we have to be thorough.

  Good work, so far!

Cheers,
-- 
Bosko Milekic
bmilekic_at_technokratis.com
bmilekic_at_FreeBSD.org