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_access_fault4m+0x40c
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.

-Andrew