Machine check in install kernel
I get a "Machine check in kernel mode" early in the boot when using the kernel
that comes with the woody r0 installer for powermac. I get the same behaviour
whether I boot the uncompressed kernel with bootx, or use the HFS boot floppy.
This is on a Mac 8500 which is upgraded with a PowerLogix 350 MHz G4 CPU card.
I think it has 160 MB of ram. I've previously run various 2.2 and 2.4 kernels
with success, although I had occasional freezes with 2.2.18.
I was able to begin the install with a 2.2.19 kernel I had previously been
installed, but unfortunately I can't complete the installation because the
version numbers don't match in the modules (apparently a 2.2.20 kernel is
provided by r0). I need at least the ppp module to complete my installation.
When I get to the point of configuring the drivers, it fails, and later when I
restart and try to connect to the net, it fails again because it can't load a
Is there a different 2.2.20 kernel I can try, or a pair of driver disks built
for 2.2.19? This seems to have brought me to a halt. I don't have another
Linux mac to build a PowerPC kernel on. I could try doing a cross-compile on a
pentium system, but I've never done that and it sounds complicated.
Here's the message I get from the crash:
fd0: SWIM3 floppy controller
md driver 0.36.6 MAX_MD_DEV=4, MAX_REAL=8
Machine check in kernel mode. (regs at c05bf9d0)
NIP: C0145E8C XER: 20000100 LR: C0147B2C REGS: c05bf9d0 TRAP: 0200
MSR: 00009030 [EE, IR, DR, ME]
TASK = c05be000 'swapper' mm-pgd c01f2000 Last syscall: 120
GPR00: 00000080 C05BFA80 C05BE000 C02F7000 00000070 00000007 00000002 C03DFC38
GPR08: C0400000 CC803000 00356000 F2C00000 22462028 002A10A8 00000000 00000000
GPR16: 00000000 00000020 C02080F4 C05BFE4C C05BFA98 00000000 00000000 C05BFAA8
GPR24: 0000001F 0000003E C05BA1E0 00000009 00000000 C0220000 C02080F4 C03F7---
C000FBFC C0147B2C C022ADB4 C022AAE0 C0226488 C021CA30 C00049C4
C0009C6C C0009C6C (this last is repeated something like 27 times - infinite
recursion... it continues:)
Kernel panic: machine check
Rebooting in 180 seconds
after a while it reboots. If I leave bootx set to boot off this same kernel, it
will boot and crash repeatedly with the same register dump.
I greatly appreciate any help anyone can give me. My machine addled its little
brain when I had a freeze right in the middle of upgrading a couple hundred
packages this morning, and I eventually decided to reformat everything but /home
and install woody from scratch.
This is the first time I have attempted to use the woody installer on powerpc.
My previous installation was potato followed by an upgrade to woody. I have run
the woody installer on x86 though.
Michael D. Crawford
GoingWare Inc. - Expert Software Development and Consulting
Tilting at Windmills for a Better Tomorrow.