Re: Crashdump support in PPC?

[Michael <macallan%netbsd.org@localhost>]

Hello,

On Sat, 1 Oct 2011 19:03:59 -0500
Donald Lee <MacPPC2%caution.icompute.com@localhost> wrote:

> Do we have crashdump support in MacPPC NetBSD 5.0.2? (unmodified!)
> 
> I have a panic, (again).  It is a production machine, and I'd
> like to take a closer look at the crash dump, but the panic/reboot did
> not appear to produce one.  All I got was what I typed in from the
> console:
> 
> trap: kernel read DSI trap @ 0xde0c5010 by 0x3ec85c (DSISR 0x40000000, 
> err=14), lr 0x3ec850
> panic: trap
> Begin traceback...
> 0xd45c7d00: at traap+0x108
> 0xd45c7d90: kernel DSI read trap at 0xde0c5010 by turnstile_block+0x140: 
> srr1=0x9032
>       r1=0xd45c7e50 cr=0x84000044 xer=0 ctr=0x3d0778 dsisr=0x40000000
> 0xd45c7e50: at turnstile_block+0xd8
> 0xd45c7e80: at mutex_vector_enter+0x184
> 0xd45c7eb0: at callout_softclock+0x1a8
> 0xd45c7f10: at softint_thread+0xf4
> 0xd45c7f40: at emptyidlespin+0x10
> 0xd45c7f50: at aprint_error_internal+0x78
> trap: pid 0.5 (system): kernel MCHK trap @ 0x49eba8 (SRR1=0x149030)
> panic: trap
> Faulted in mid-traceback; aborting... dumpsys: TBD

Is this an SMP box? If it is, can you try to repeat this with only one CPU 
online?

> When this panic happens, the USB keyboard is useless, so
> I can't ask for kernel debugger ops.  Whatever happens has to
> happen automagically.

This has been fixed in -current, although that probably won't help - the soft 
interrupt code changed too.

> Do I have to do something special to get this to happen?  Is it supported
> in MacPPC NetBSD?

There is no crashdump support in arch/powerpc.

have fun
Michael
-- 
Michael <macallan%netbsd.org@localhost>