umount smbfs LOR

Hi,

I'm sorry if this is already known, but this is what happens
when I try to umount smbfs mounted export:


netsmb_dev: loaded
lockmgr: thread 0xc30e1870 unlocking unheld lock
KDB: stack backtrace:
kdb_backtrace(c08c0d3a,c30e1870) at kdb_backtrace+0x29
lockmgr(c2c4f808,2006,c2c4f878,c30e1870,d6eb4c00) at lockmgr+0x5f6
smb_co_put(c2c4f800,d6eb4c00,d6eb4c00,c30e1870,c2719880) at 
smb_co_put+0x4c
smbfs_unmount(c279f2d4,8000000,c30e1870,0,42f) at smbfs_unmount+0x71
dounmount(c279f2d4,8000000,c30e1870,c0993b68,0) at dounmount+0x2b5
unmount(c30e1870,d6eb4d04,c30e2000,c,c30e1870) at unmount+0x201
syscall(3b,3b,3b,804a465,8202e01) at syscall+0x27e
Xint0x80_syscall() at Xint0x80_syscall+0x1f
--- syscall (22, FreeBSD ELF32, unmount), eip = 0x280c23ef, esp = 
0xbfbfe56c, ebp = 0xbfbfe618 ---

It is from today built:

FreeBSD fbsd.interex-pla.net 7.0-CURRENT FreeBSD 7.0-CURRENT #0: Thu May 
4  14:20:19 CEST 2006
(config is GENERIC).

Regards,
gg.