Re: Potential re(4) / netbsd-4 / i386 problem?

[Brad du Plessis <bradd%cat.co.za@localhost>]

On 3/5/2010 12:39 PM, Brad du Plessis wrote:
> On 3/5/2010 12:18 PM, Izumi Tsutsui wrote:
> > > I've been seeing panics on a netbsd-4/i386 machine which appears to be
> > > related to the reception of oversized frames:
> > >
> > > re0: discarding oversize frame (len=8813)
> > :
> > > Can anyone help me?
> >
> > - options DIAGNOSTIC might help debug
>
> I'm busy trying to reproduce with options DIAGNOSTIC right now. So far 
> it hasn't panicked in the last 3 hours.
>
> > - does it happen on UP kernel (GENERIC, not GENERIC.MP), or netbsd-5?

I've managed to reproduce this now in netbsd-5 too (source is about 3 
months old, not sure if there have been any changes since):

re0: discarding oversize frame (len=9041)
re0: discarding oversize frame (len=16158)
panic: kernel diagnostic assertion "pcg->pcg_avail == 0" failed: file 
"../../../../kern_subr_pool.c", line 2580


As I think I've said before, the actual crash point is different
every time but the panic is always preceded by the discarding
oversize frame. Sometimes the len in the oversize frame message
is len=-1.

Any advice?

Thanks,
 Brad