Re: Problems with install on Power Mac G3 minitower

[Benjamin Herrenschmidt <benh@kernel.crashing.org>]

> 
> Now when I try and boot into the Linux installer, I always get a crash:
> 
> Machine check in kernel mode.  (regs at c01f5ea0)
> Caused by (from srr1): Unknown values in srr1
> NIP: C015E3CC XER: 00000000 LR: C0163014 REGS: c01f5ea0 TRAP: 0200
> MSR: 00001030 [IR, DR, ME]
> TASK = c01f41e0[0] 'swapper' mm->pgd c01f2000 Last syscall: 112
> GPR00: 000000FF C01F5F50 C01F41E0 C053B000 00008000 C01F5FF0 FFFFFF9D 
> F3000020
> GPR08: C01F3414 FE010014 00010000 FE000000 00000000 0040A0A8 00000000 
> 00000000
> GPR16: 00000000 00000000 20000002 00000000 00001032 001F5FE0 00000000 
> C0004154
> GPR24: C0006518 00000000 40000000 0040A000 0000002E C01F5FF0 00009032 
> C053B000
> Call backtrace:
> 00000000 C0163014 C00064A0 C000CEFC C0006558 C0004154 C0021030
> C0006604 C0006630 C0003EC4 C0220000 C021C8CC C0003CF0
> Kernel panic: machine check
> In swapper task - not syncing
> Rebooting in 180 seconds..

That's interesting ! It looks like a HW error (machine check is usually
caused by a device reporting a HW failure, or the kernel trying to
do IO to non-existing devices).

Do you have the System.map that corresponds to this kernel ? It's
needed to decode the numbers above.

> (sorry about the !@#$$%^&*()_+=- word wrap)
> 
>     Before, I only got this one occasionally; now I get it every time. 
> It happens immediately after the two SCSI disks are checked, so it's 
> probably related to the SCSI controller. I'll see if I can connect the 
> drives to the other SCSI controller and remove the Atto board 
> (temporarily at least). But that'll have to wait till tomorrow; it's 
> getting late.
> 
> Thanks for your help.
> 
>   .....Ron
-- 
Benjamin Herrenschmidt <benh@kernel.crashing.org>