witness warning in arp processing

[Vijay Singh]

All, I am seeing this warning on my 8.2 based system.

taskqueue_drain with the following non-sleepable locks held:
exclusive rw lle (lle) r = 0 (0xffffff0014dc9110) locked @ sys/netinet/in.c:1760
KDB: stack backtrace:
kdb_backtrace() at kdb_backtrace+0x3e
_witness_debugger() at _witness_debugger+0x24
witness_warn() at witness_warn+0x402
taskqueue_drain() at taskqueue_drain+0x36
cancel_delayed_work() at cancel_delayed_work+0x56
set_timeout() at set_timeout+0x18
netevent_callback() at netevent_callback+0x29
_handle_arp_update_event() at _handle_arp_update_event+0x31
in_arpinput() at in_arpinput+0xe92
arpintr() at arpintr+0x255
netisr_dispatch_src() at netisr_dispatch_src+0x14a
netisr_dispatch() at netisr_dispatch+0x20
ether_demux() at ether_demux+0x281
ether_input_internal() at ether_input_internal+0x60c
ether_nh_input() at ether_nh_input+0x1d
netisr_dispatch_src() at netisr_dispatch_src+0x14a
netisr_dispatch() at netisr_dispatch+0x20
ether_input() at ether_input+0xef
lem_rxeof() at lem_rxeof+0x6ee
lem_handle_rxtx() at lem_handle_rxtx+0x4f
taskqueue_run_locked() at taskqueue_run_locked+0x145
taskqueue_thread_loop() at taskqueue_thread_loop+0x73
fork_exit() at fork_exit+0x180
fork_trampoline() at fork_trampoline+0xe

Is this a known issue? Has it been fixed?

-vijay