kernel panic on smb activity

Scenario: I use a smb shared file system (win2k) via mount_smbfs and all 
is working fine (copy from/to, delete, etc.)

Issue: today I found a file that causes kernel panic if I try to copy it 
to the share.

# cp gaim.diff /mnt/
Fatal trap 12: page fault while in kernel mode
[...]

The panic is 100% reproducible with this particular file, a very simple 
diff file (available at http://www.alexdupre.com/gaim.diff). The system 
is a today's current.

--
Alex Dupre