#cat /dev/ulpt0 - causes fatal trap 12

[Peter Jeremy]

On Fri, 2005-Nov-11 17:59:44 +0300, Alex Pivovarov wrote:
>running
>#cat /dev/ulpt0
>causes fatal trap 12 and system begins dumping.
>
>printer HP LaserJet 1010 USB
>
>#uname -a
>FreeBSD st1.fqdn 6.0-RELEASE FreeBSD 6.0-RELEASE #0: Thu Nov 10
>16:04:32 MSK 2005 root@:/usr/obj/usr/src/sys/st1 i386

You've sent exactly the same information to three mailing lists (that
I've seen) as well as submitted a PR.  Unfortunately, you haven't
provided any useful information.  Please have a read of
http://www.freebsd.org/doc/en_US.ISO8859-1/articles/problem-reports/article.html

In order to begin investigating this problem, we need to know:
- the exact trap message (including the register contents)
- the kernel backtrace
- Details of your USB hardware (all the USB-related kernel probe messages)

Since you state that the system begins dumping, you presumably have a
crashdump and can easily extract the first two items above (see:
http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug.html
http://www.freebsd.org/doc/en_US.ISO8859-1/books/developers-handbook/kerneldebug-gdb.html

The last item will be in /var/log/messages.

-- 
Peter Jeremy