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frequent panics on 6.1.2


I keep experiencing intermitent panics on some ppc750's I use (don't have any 
other ppc machines to hand to check):

found openpic PIC at 80040000
OpenPIC Version 1.2: Supports 4 CPUs and 64 interrupt sources.
bootpath: /pci@f2000000/mac-io@17/ata-4@1f000/disk@0:0/netbsd
mainbus0 (root)
cpu0 at mainbus0: 750 (Revision 3.0), ID 0 (primary)
cpu0: HID0 0x8050c0a4<EMCP,NAP,DPM,ICE,DCE,SGE,BTIC,BHT>, powersave: 1
cpu0: 500.00 MHz, no-parity 1MB WB L2 cache (PB SRAM) at 2.5:1 ratio

trap type 100 at 1e9fcc
panic: trap
cpu0: Begin traceback...
0x10003d50: at panic+0x4c
0x10003d90: at trap+0x104
0x10003e20: kernel RST trap by cpu_idlespin+0x20: srr1=0x9032
 r1=0x10003ef0 cr=0x28000044 xer=0 ctr=0x1e9fac
0x10003ef0: at sched_curcpu_runnable_p+0x2c
0x10003f00: at idle_loop+0xe8
0x10003f20: at setfunc_trampoline+0x8
0x10003fe8: at 0x802081fc
saved LR(0x6c5f6c5d) is invalid.cpu0: End traceback...

It seems to occur randomly then again on the fsck after rebooting, turning off 
the machine for a bit before restarting seems to mitigate it for a while.

For now I've turned off machdep.powersave to see if that helps, next I'll be 
liberally applying printf statements.

Anyone else seeing this?


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