Repeatable kernel panic

[stan]

I've installed ubuntu 5.10 (64 bit X86 version) on a Sun Ultra 40.
In this machine I have a Symbios LVD SCSI card. I have an HP DLT80
tape drive connected to this card.

Doing "dd if=/dev/nst1 bs=32k skip=1" Will reliably panic the machine
I have the AMD SMP kernel installed, but this does not seem to be
kernel specific, as I built a 2.6.16 kernel with the sources from
kernel.org, and I can still reproduce this panic.

What should I do to properly report this?

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