panic: Assertion t->t_cursor.tp_row <= t->t_winsize.tp_row failed at /usr/src/sys/teken/teken_subr.h:94

I got this panic when playing with the docking
station for lenovo T61p.
I tried to attach/detach it.
I got a complete crash dump,
but don't know what to do with it.

root_at_zzz:/var/crash # cat info.1
Dump header from device /dev/ada0p3
  Architecture: amd64
  Architecture Version: 2
  Dump Length: 357797888B (341 MB)
  Blocksize: 512
  Dumptime: Mon Feb 18 11:51:27 2013
  Hostname: zzz
  Magic: FreeBSD Kernel Dump
  Version String: FreeBSD 10.0-CURRENT #2 r246552: Fri Feb 15 20:41:10 GMT 2013
    root_at_zzz:/usr/obj/usr/src/sys/MINKY
  Panic String: Assertion t->t_cursor.tp_row <= t->t_winsize.tp_row failed at /u
sr/src/sys/teken/teken_subr.h:94
  Dump Parity: 3806418789
  Bounds: 1
  Dump Status: good
root_at_zzz:/var/crash #

The core.txt:
 http://eis.bris.ac.uk/~mexas/core.txt.1

Please advise

Thanks

Anton