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Subjectprotection fault writing to scsi tape on .36pre7
Greetings... this my first (and hopefully last) post. Any assistance or
pointers would be greatly appreciated:

I recently added a Seagate Python DDS drive attached via a TekRam
DC390 controller to my K6 box. I immediately started receiving
protection faults such as the one below (all of the errors have been
the same down to the number). It only seems to happen when I write to
the drive, although not instantly, but within the first 25mb of data
written. Reading does not cause any problems for me (yet). This error is
repeatable and predictable, in that it occurs regularly upon *write*
access to the tape drive. I've used both the tekram driver as well as the
amd53c974 driver, both with similar result. Any suggestions would be
greatly appreciated, and I can try to provide other information as
required.

Thanks in advance,

Bill

The specifics:

unknown interrupt
divide error: 0000
cpu: 0
eip: <00109b64>
eflags: 00000246
process swapper (pid 0 process nr 0 stackpage=001d0388)
call trace: <0010ac19> <00109754> <00109518> <001180e8> <00112354>
code: 83 3d 74 03 1d 00 00 74 02 31 db e8 d4 85 00 00 eb b2 89 f6
kfree of non-kmalloced memory: 001d23d0 next=03e8080 order=65260036
kfree of non-kmalloced memory: 001d23c0 next=03e8080 order=65260036
kfree of non-kmalloced memory: 001d28d4 next=03e8080 order=65260036

From my System.map:

00109ac8 T enable_hlt
00109ad0 t hard_idle
>> 00109b08 T sys_idle << EIP
00109b7c T reboot_setup
00109bf8 T hard_reset_now
001234e4 T get_unused_fd

Call trace:

system_call
init
start_kernel
it_real_fn
schedule

Linux galileo.harris.com 2.0.36 #1 Sun Sep 6 17:29:44 EDT 1998 i586 unknown

The adapter the tape drive is attached to, using the tmscsim module:

scsi1 : Tekram DC390(T) V1.11 Feb-05-1997
scsi : 2 hosts.
Vendor: TEAC Model: CD-ROM CD-532S Rev: 1.0A
Type: CD-ROM ANSI SCSI revision: 02
Detected scsi CD-ROM sr0 at scsi1, channel 0, id 3, lun 0
Vendor: ARCHIVE Model: Python 28388-XXX Rev: 5.AC
Type: Sequential-Access ANSI SCSI revision: 02



--
Bill Welliver
Systems Administrator, Riverweb CIS
hww3@riverweb.com


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