panic related to USB printer

[Bill Green <bill%supposedly.org@localhost>]

Hi all,

I'm seeing kernel panic issues that seem to be related to an attached 
USB printer.
The most recent panic seemed to have been triggered by my pressing the 
printer's
cancel button during a job.  A similar panic occurred a few days ago 
but I don't
remember the circumstances.  The machine is an Ultra 5 running NetBSD 
5.1 with an
NEC-chipset USB card, and I'm using CUPS.  I'm going to build a debug 
kernel this
evening and see if I can trigger it again.  I've included what I got in 
the log below.
If anybody has any ideas where I might start looking, please let me 
know.


ulpt0 at uhub1 port 1 configuration 1 interface 0
ulpt0: Samsung Electronics Co., Ltd. Samsung ML-1520 Series, rev 
1.10/1.00, addr 2, iclass 7/1
ulpt0: using bi-directional mode
cpu0: data fault: pc=1476388 addr=0
panic: kernel fault
Begin tra= b5cb3d1
13195b0(c69e900, b30ef80, 0, c4f98d0, 14650c0, b30fb70