On Tue, Feb 01, 2005 at 09:20:26AM -0500, Michael wrote:
> >Ah.  This explains things (Sparc64, -current, box runs quite solid in
> >normal operation, but if I run Mozilla and *then* do things that cause
> >swapping, I've seen more than one hard system lockup).
> 
> Try the patch Chuck Silvers posted here (and on port-sparc64 ) a couple 
> of days ago. On my boxes ( U1 and U10 ) it prevents the kernel panics, 
> instead the processes in question mostly get a bus error and dump core 
> ( although there were a few instances of zombie processes ). Still far 
> from being satisfactory but it keeps your box running.

the application core dumps when pthread-using processes are paged out
are a problem on all platforms.

charles posted a work-around a while back that should help:

http://mail-index.netbsd.org/tech-kern/2005/01/06/0006.html

-Chuck