7.0-CURRENT panic on kldunload linux.ko

FreeBSD fbsd.interex-pla.net 7.0-CURRENT FreeBSD 7.0-CURRENT #5: Wed Dec 14 
13:30:55 CET 2005     root_at_fbsd.interex-pla.net:/usr/src/sys/i386/compile/TEST 
i386

fbsd# kgdb  /usr/src/sys/i386/compile/TEST/kernel.debug 
/var/crash/vmcore.1
[GDB will not be able to debug user-mode threads: 
/usr/lib/libthread_db.so: Undefined symbol "ps_pglobal_lookup"]
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Unread portion of the kernel message buffer:
panic: witness_destroy: lock (sleep mutex) linux osname is not initialized
KDB: enter: panic
Uptime: 33s
Dumping 511 MB (2 chunks)
   chunk 0: 1MB (159 pages) ... ok
   chunk 1: 511MB (130736 pages) 495 479 463 447 431 415 399 383 367 351 
335 319 303 287 271 255 239 223 207 191 175 159 143 127 111 95 79 63 47 31 
15

#0  doadump () at pcpu.h:165
165     pcpu.h: No such file or directory.
         in pcpu.h
(kgdb) backtrace
#0  doadump () at pcpu.h:165
#1  0xc0666da0 in boot (howto=260) at ../../../kern/kern_shutdown.c:399
#2  0xc0666ffb in panic (fmt=0xc08db756 "%s: lock (%s) %s is not 
initialized") at ../../../kern/kern_shutdown.c:555
#3  0xc0687540 in witness_destroy (lock=0xc367ac7c) at 
../../../kern/subr_witness.c:589
#4  0xc0660092 in mtx_destroy (m=0xc367ac7c) at 
../../../kern/kern_mutex.c:891
#5  0xc065a355 in linker_file_sysuninit (lf=0xc3660400) at 
../../../kern/kern_linker.c:238
#6  0xc065a992 in linker_file_unload (file=0xc3660400, flags=0) at 
../../../kern/kern_linker.c:539
#7  0xc065b080 in kern_kldunload (td=0xc3660400, fileid=6, flags=0) at 
../../../kern/kern_linker.c:828
#8  0xc065b0de in kldunloadf (td=0xc352cd80, uap=0x0) at 
../../../kern/kern_linker.c:858
#9  0xc086db1e in syscall (frame=
       {tf_fs = 59, tf_es = 59, tf_ds = 59, tf_edi = 6, tf_esi = 
-1077940702, tf_ebp = -1077941000, tf_isp = -646460060, tf_ebx = 1, tf_edx 
= 0, tf_ecx = 1, tf_e
ax = 444, tf_trapno = 12, tf_err = 2, tf_eip = 671825691, tf_cs = 51, 
tf_eflags = 658, tf_esp = -1077942132, tf_ss = 59}) at 
../../../i386/i386/trap.c:1008
#10 0xc085cc4f in Xint0x80_syscall () at 
../../../i386/i386/exception.s:190
#11 0x00000033 in ?? ()
Previous frame inner to this frame (corrupt stack?)
(kgdb)


Running skype-1.2.0.18 for linux will immediately reboot machine without 
warring..

Regards,
gg.