[parisc-linux] Kernel panics on 715/80

[Matthew Wilcox]

On Mon, Sep 03, 2001 at 05:21:09PM +0300, Hannu Martikka wrote:
> Hei,
> 
> I just downloaded kernel-2.4.9 (linux-20010901.tar.gz) and compiled it
> with default configuration (I selected the 7100LC cpu) on my 715/80. I was
> successfully running the 2.4.0 kernel from 0.9.2 cd-image.
> 
> Any ideas what went wrong?

Nope; two hints.  First, you can look up 102ee3c4 and 1010afd0 in your
System.map -- that'll tell you which function it's in and what function
called it, respectively.  Secondly, you can define EARLY_BOOTUP_DEBUG
in arch/parisc/kernel/pdc_cons.c and recompile.  That'll show where it
dies.  This crash concerns me a little since I tested CVS kernel a couple
of days ago on a 715/80.

>      YZrvWESTHLNXBCVMcbcbcbcbOGFRQPDI
> PSW: 00000000000011000000000000001111
> r0-3     00000000 2000003c 1010afd0 1034c76c

r2 is the return address -- ie our caller.

> r4-7     f0200000 1034c010 00000005 10348628
> r8-11    10348609 00000008 0004000e 102ecf94
> r12-15   00000000 00000001 00000001 f0000704
> r16-19   f000b858 00000002 00000000 00000000
> r20-23   00005e00 0000000b 00000010 0000008e
> r24-27   00000000 1034c1e0 1034c770 102a4010
> r28-31   00000000 102b6810 10348980 f0012870
> sr0-3    00000000 00000000 00000000 00000000
> sr4-7    00000000 00000000 00000000 00000000
> 
> IASQ: 00000000 00000000 IAOQ: 102ee3c4 102ee3b4

and IAOQ is the address of the executing instruction and the next
instruction -- interestingly the instruction that faulted is in the
delay slot of a branch.

>  IIR: 0c201093    ISR: 00000000  IOR: 2000003c
>  ORIG_R28: 00000000

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