ndis related panic in CURRENT

Hi,

When I tried to make wlan0 down (ndis driver for Intel 5100AGN) got
panic:
...
Slab at 0x8cdd7cb8, freei 86 = 0.
panic: Duplicate free of item 0x8cdd7560 from zone 0x8148c380(16)

cpuid = 0
KDB: stack backtrace:
db_trace_self_wrapper(80a5d82b,84e06ba0,80729ff9,80a8d790,0,...) at
db_trace_self_wrapper+0x26
kdb_backtrace(80a8d790,0,80a810e5,84e06bac,0,...) at kdb_backtrace+0x29
panic(80a810e5,8cdd7560,8148c380,80a2c3b6,8,...) at panic+0x119
uma_dbg_free(8148c380,8cdd7cb8,8cdd7560,9dc,8574286c,...) at
uma_dbg_free+0x17b
uma_zfree_arg(8148c380,8cdd7560,8cdd7cb8,24,85742800,...) at
uma_zfree_arg+0x6e
free(8cdd7560,80b2c4e0,88c3a1ec,cb3,854e8800,...) at free+0xca
ndis_stop(84e06c80,80cc13d8,85176964,80cc13d8,80b2e344,...) at
ndis_stop+0xe6
ndis_ioctl_80211(854e8800,80206910,0,84e06cd4,807623cb,...) at
ndis_ioctl_80211+0x388
parent_updown(854e8800,1,80a5ef36,54,85247b9c,...) at parent_updown+0x22
taskqueue_run(85247b80,85247b9c,0,80a511b5,0,...) at taskqueue_run+0x10b
taskqueue_thread_loop(80b94068,84e06d38,80a56585,32d,80b7f400,...) at
taskqueue_thread_loop+0x68
fork_exit(807624c0,80b94068,84e06d38) at fork_exit+0xb8
fork_trampoline() at fork_trampoline+0x8
--- trap 0, eip = 0, esp = 0x84e06d70, ebp = 0 ---
Uptime: 2h9m2s
Physical memory: 1979 MB
Dumping 400 MB: 385 369 353 337 321 305 289 273 257 241 225 209 193 177
161 145 129 113 97 81 65 49 33 17 1
...

I'm running:
beastie# uname -an
FreeBSD beastie.micom.mng.net 8.0-CURRENT FreeBSD 8.0-CURRENT #5
r190040M: Thu Mar 19 21:45:37 ULAT 2009
tsgan_at_beastie.micom.mng.net:/usr/obj/usr/src/sys/DEVIL_WITNESS  i386


Please let me know if you need more info.

thanks,

Ganbold


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