Re: [9fans] install problems redux

Re: [9fans] install problems redux

[Russ Cox]

Start the install over.  I bet it doesn't happen again.
(Yes, this is a terrible answer.  I see what happened
and can't figure out how it did, but I suspect it's
just a really nasty race, and the fact that we haven't
seen it anywhere makes me hope that it's just a
really difficult race to trigger.)

Russ

Re: [9fans] install problems redux

[Russ Cox]

So much for the race idea.  We put some code
into the kernel to make sure this can't happen.
I'm about to build a new boot disk and we can
go from there.

Russ

Re: [9fans] install problems redux

[John Saylor]

Hi

I tried again and got about the same [lines that were different were
modified and leading '> ' was removed]:

> cpu0: registers for stats 103

cpu0: registers for stats 105

> FLAGS=10246 TRAP=0 ECODE=8010034D PC=801537FD SS=E1C8 USP=0
>   AX 00000000  BX 00000000  CX 00000000  DX 00000000
>   SI 8063CAE0  DI 8064E1C8  BP 8063CA60

SI 8063CD00  DI 80647C38  BP 8063CC80

>   CS 0010  DS 0008  ES 0008  FS 001B  GS 001B
>   CR0 80010039 CR2 00002dfa CR3 01423000 CR4 00000010

CR0 80010039 CR2 0001ff7f CR3 01424000 CR4 00000010

>   ur 8063cad4 up 802d0c48

ur 8063ccf4 up 802d0c48

> panic: divide error
> ktrace /kernel/path 80106720 8063c8e8

ktrace /kernel/path 80106720 8063cb08


Also, what may not have been clear from my earlier mail was that I dual
boot [into the dreaded win98se]. Also, my floppy drive has been acting
up- is there anything here that might represent a hardware failure on
that account?

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[9fans] install problems redux

[John Saylor]

Hi

I had a working plan9 install, then I was foolish enough to use and try
to maintain [windows update, &c]. Of course, it crashed at one point and
during this 'unexpected behavior' somehow the boot thing got all messed
up. When trying to boot plan9 it complained of 'command or file not
found' [something like that].

So I was going to reinstall, I wanted to update my sources anyway since
they came from the old CD iso. It booted off the floppy, found the
ethernet card and while rio was initializing- BAM! It was over.

Here is what I copied down from the screen:
cpu0: registers for stats 103
FLAGS=10246 TRAP=0 ECODE=8010034D PC=801537FD SS=E1C8 USP=0
  AX 00000000  BX 00000000  CX 00000000  DX 00000000
  SI 8063CAE0  DI 8064E1C8  BP 8063CA60
  CS 0010  DS 0008  ES 0008  FS 001B  GS 001B
  CR0 80010039 CR2 00002dfa CR3 01423000 CR4 00000010
  ur 8063cad4 up 802d0c48
panic: divide error
ktrace /kernel/path 80106720 8063c8e8

Any suggestions?

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