panic: rtfree - any work done currently on this?

Hi,

I wonder if any work is done on
http://www.freebsd.org/cgi/query-pr.cgi?pr=117913
if it is I'll be happy to test patches and/or suggestions or provide 
access to a box for debugging.

Thanks,

--per

rtfree: 0xc5732d20 has 1 refs
ssppiinn  lloocckk  00xxcc5500ff22a20800  ((ttuurrnnssttiillee 
lloocckk))  hheelldd  bbyy  00xxcc55111197868600  ((ttiidd 
110000002154))  ttoooo  lloonngg

panic: spin lock held too long
cpuid = 1
KDB: enter: panic
[thread pid 16 tid 100014 ]
Stopped at      kdb_enter+0x32: leave
db> wh
Tracing pid 16 tid 100014 td 0xc5117660
kdb_enter(c0a9c7e0,1,c0a9b6b4,e3cb7b7c,1,...) at kdb_enter+0x32
panic(c0a9b6b4,c5119880,c0aa0958,c5119880,186b9,...) at panic+0x124
_mtx_lock_spin_failed(1,19,c0aa0984,cb,19,...) at _mtx_lock_spin_failed+0x51
_thread_lock_flags(c5119880,10,c0aa0984,cb,1,...) at _thread_lock_flags+0xc7
propagate_priority(c0bbd470,0,c0aa0984,2e2,c50f2c80,...) at 
propagate_priority+0xe0
turnstile_wait(c50f2c80,c55c4cc0,0,17a,c5867d08,...) at turnstile_wait+0x48c
_mtx_lock_sleep(c5867d08,c5117660,0,c0ab2afe,1b6,...) at 
_mtx_lock_sleep+0x15a
_mtx_lock_flags(c5867d08,0,c0ab2afe,1b6,3d2a1,...) at _mtx_lock_flags+0xef
tcp_timer_rexmt(c58698ac,0,c0a9d9f9,ef,12,...) at tcp_timer_rexmt+0x96
softclock(0,0,c0a993e9,471,c515e364,...) at softclock+0x266
ithread_loop(c5113290,e3cb7d38,c0a9915d,2ea,c515f550,...) at 
ithread_loop+0x1b5
fork_exit(c0732ea0,c5113290,e3cb7d38) at fork_exit+0xb8
fork_trampoline() at fork_trampoline+0x8
--- trap 0, eip = 0, esp = 0xe3cb7d70, ebp = 0 ---
db>