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Subjectbaycom_ser_hdx Oops 2 crash
Date

Hi Tom, I ran the following script, then TNOS, and had a problem!

#!/bin/sh
# file: /root/baycom/start - load and set Baycom driver
setserial /dev/ttyS2 uart none
modprobe baycom_ser_hdx mode="ser12*" iobase=0x3e8 irq=3
ifconfig bcsh0 hw ax25 VE3HUR-1 up
net2kiss -i bcsh0 -v /dev/ptypf &

I then ran Tnos and got:

...
This version by Brian A. Lantz, KO4KS
Copyright 1991 by Phil Karn (KA9Q) and contributors.
Unable to handle kernel NULL pointer dereference at virtual address 00000001
current->tss.cr3 = 01d89000, %cr = 01d89000
*pde = 00000000
Oops: 0002
CPU: 0
EIP: 0010:[<c484aaf7>]
EFLAGS: 00010002
eax: c3830800 ebx: 00000246 ecx: c3830ec0 edx: 00000001
esi: c2f214a0 edi: c4c8e460 ebp: c3c79e74 esp: c3c79e40
ds: 0018 es: 0018 ss: 0018
Process net2kiss (pid: 24355, process nr:32, stackpage=c3c79000)
Stack: ffffff9c c016507b c2f214a0 c484e460 c2f214a0 c484e460 c01864b4 c2f214a0
c3c79f08 c3c79eec c0186328 0000000a c2f4f140 c27f36ec c0161594 c27f36ec
c3c79eec 00000002 c3c79ea8 c3c79f08 c27f36ec 00000000 00000010 c3c79ea8
Call Trace: [<c016507b>] [<c484e460>] [<c484e460>] [<c01864b4>] [<c0186328>] [<c
0161594>] [<c0186328>]
[<c01621ae>] [<c011e0a1>] [<c011e111>] [<c011e226>] [<c0162a8f>] [<c01091
bc>]
Code: 89 32 f0 0f ba 35 f4 f6 21 c0 00 53 9d a1 e0 fd 20 c0 89 47

I had to copy this off the screen, so I hope its correct and of some use.
I've tried to reproduce it exactly as it appeared.

The configuration was: - 2 Pentium smp
- Linux 2.2.13 (kernel and modules custom compiled)
- Slackware 7 distribution
- ax25-tools-0.0.5 from the Slackware
"contrib/ham/ax25" directory
- Tnos 2.10/ELF

In an attempt to simulate the operation of the old baycom character device,
I was using the above script, set up for baycom_ser_fdx, and replaced the
bc0 device in the Tnos configuration with ttypf. This didn't work well
(stopped transmitting after a short, but random interval) so I decided
to test using baycom_ser_hdx (for the first time and last time).

73, Don ve3hur dstalk@execulink.com


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