On Sat, 25 May 1996 17:14:43 -0400 (EDT) 
 Andrew Gillham <gillhaa@ghost.whirlpool.com> wrote:

> Neil J. McRae wrote:
> > 
> > My IPX has panicked about 10 times this week:
> > 
> > Panics have been kernel fault, alignment fault, last nights one looked
> > like a memory allocation fault, I've tested the memory in the machine
> > and it seems fine, is anyone else getting this?
> > 
> > The only change that I've really made is to add options DIAGNOSTIC. Could
> > that be the cause?
> 
> My LX has been crashing occasionally with something like the following:
> 
> panic: pmap_page_protect !PG_V
> Stopped at	_Debugger+0x4:	jmpl		[%o7 + 0x8], %g0
> db> trace
> _pmap_page_protect4m(0, f7fff000, f818f0a0, 7, 0, 2b) at _pmap_page_protect4m
+0x248
> _vm_fault(ffdf, f7fff000, 3, 0, 0, 5e3a8) at _vm_fault+0x550
> _mem_access_fault4m(f8727800, 3aa, f7fff978, 3, f7fff000, f99d8e30) at _mem_a
ccess_fault4m+0x40c

I've had _mem_access_fault before.

> start(f99d7020, f7fff978, 38, f99d7000, 5e400, 21ee) at start+0x12dc
> _copyout(f99d7098, f81275ac, 0, 0, 0, 6cb8) at _copyout+0x28
> _trap(5, 41000086, e8e0, f99d8fb0, 65000, f99d8fb0) at _trap+0x33c
> start(0, 1, 5d9e8, 0, f7fffbc8, fcfc) at start+0x14c0
> 
> Hope I typed all that right.. :)
> 
> Anyway, I have DDB,DEBUG,DIAGNOSTIC, and a sun4m specific kernel.
> 
I got something similiar

May 25 21:20:20 doublesix savecore: reboot after panic: pmap_release:
segment list not empty

This is really worrying, doublesix has hardly ever panicked and its been
running netbsd/sparc for about 18 months.

Neil.
--  
Neil J. McRae. Alive and Kicking.    
neil@DOMINO.ORG

           The star is going to collapse in a matter of minutes.