Fatal trap 12 when inserting Linksys WPC55AG cardbus card on 12/30 -CURRENT

This happens on -CURRENT as of 8:00AM, December 30:

Unread portion of the kernel message buffer:
Status is 0x30000821 d8bb0000
cbb0: card inserted: event=0x00000000, state=30000821
cbb0: cbb_power: 3V
Interrupt storm detected on "irq10:"; throttling interrupt source


Fatal trap 12: page fault while in kernel mode
fault virtual address   = 0xda183000
fault code              = supervisor read, page not present
instruction pointer     = 0x20:0xc04ac0f8
stack pointer           = 0x28:0xd8b62728
frame pointer           = 0x28:0xd8b62738
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 21 (cbb0)
Dumping 607 MB (2 chunks)
  chunk 0: 1MB (159 pages) ... ok
  chunk 1: 607MB (155376 pages) 591 575 559 543 527 511 495 479 463 447
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:166
166     pcpu.h: No such file or directory.
        in pcpu.h
#0  doadump () at pcpu.h:166
#1  0xc0471a29 in db_fncall (dummy1=0, dummy2=0, dummy3=1999,
dummy4=0xd8b624e0 at /usr/src/sys/ddb/db_command.c:489
#2  0xc04717a2 in db_command (last_cmdp=0xc07b70c4, cmd_table=0x0,
    aux_cmd_tablep=0xc077d288, aux_cmd_tablep_end=0xc077d28c)
    at /usr/src/sys/ddb/db_command.c:404
#3  0xc04718aa in db_command_loop ()
at /usr/src/sys/ddb/db_command.c:455
#4  0xc04739b5 in db_trap (type=12, code=0)
at /usr/src/sys/ddb/db_main.c:221
#5  0xc05764f7 in kdb_trap (type=0, code=0, tf=0xd8b626e8)
    at /usr/src/sys/kern/subr_kdb.c:485
#6  0xc0721a8b in trap_fatal (frame=0xd8b626e8, eva=0)
    at /usr/src/sys/i386/i386/trap.c:853
#7  0xc0721795 in trap_pfault (frame=0xd8b626e8, usermode=0,
eva=3659018240)
    at /usr/src/sys/i386/i386/trap.c:770
#8  0xc07212f2 in trap (frame=
      {tf_fs = 8, tf_es = 40, tf_ds = 40, tf_edi = 20480, tf_esi = 1,
tf_ebp = -659151048, tf_isp = -659151084, tf_ebx = -65 9150952, tf_edx =
-635969536, tf_ecx = -635969536, tf_eax = 20480, tf_trapno = 12, tf_err
= 0, tf_eip = -1068842760, tf_cs = 32, tf_eflags = 66050, tf_esp =
-1009411456, tf_ss = -659150948}) at /usr/src/sys/i386/i386/trap.c:455#9
0xc070dc9a in calltrap () at /usr/src/sys/i386/i386/exception.s:137
#10 0xc04ac0f8 in cardbus_read_tuple_mem (cbdev=0xc39f9680,
res=0xd8b62798, start=20480,
    off=0xd8b62798, tupleid=0x5000, len=0xd8b627a0, tupledata=0xd8b627ac
"") at bus.h:224
#11 0xc04ac1f3 in cardbus_read_tuple (cbdev=0xc39f9680, child=0x5000,
res=0xda17e000,
    start=20480, off=0xd8b62798, tupleid=0xd8b6279c, len=0xda17e000,
    tupledata=0x5000 <Address 0x5000 out of bounds>)
    at /usr/src/sys/dev/cardbus/cardbus_cis.c:458
#12 0xc04aca95 in cardbus_parse_cis (cbdev=0xc39f9680, child=0xc3d59b00,
    callbacks=0xd8b62bd0, argp=0x0)
at /usr/src/sys/dev/cardbus/cardbus_cis.c:645
#13 0xc04acb96 in cardbus_do_cis (cbdev=0x5000, child=0x5000)
    at /usr/src/sys/dev/cardbus/cardbus_cis.c:691
#14 0xc04ab17d in cardbus_attach_card (cbdev=0xc39f9680)
    at /usr/src/sys/dev/cardbus/cardbus.c:499
#15 0xc04d246f in cbb_insert (sc=0xc39b4000) at card_if.h:82
#16 0xc04d21eb in cbb_event_thread (arg=0xc39b4000)
at /usr/src/sys/dev/pccbb/pccbb.c:507
#17 0xc053b2bf in fork_exit (callout=0xc04d2080 <cbb_event_thread>,
arg=0x5000,
    frame=0x5000) at /usr/src/sys/kern/kern_fork.c:790
#18 0xc070dcfc in fork_trampoline ()
at /usr/src/sys/i386/i386/exception.s:198
(kgdb)

On the kernel built on December 17 (not necessarily -CURRENT as of
December 17) card works properly. Here are dmesg bits from card
insertion:

Status is 0x30000821
cbb0: card inserted: event=0x00000000, state=30000821
cbb0: cbb_power: 3V
Interrupt storm detected on "irq10:"; throttling interrupt source
cardbus0: Non-prefetchable memory at 88000000-8800ffff
ath0: <Atheros 5212> mem 0x88000000-0x8800ffff irq 10 at device 0.0 on
cardbus0
ath0: Ethernet address: 00:0c:41:dd:c7:0d
ath0: mac 5.6 phy 4.1 radio 3.6

Cardbus controller is:

cbb0_at_pci0:10:0: class=0x060700 card=0xc60214ff chip=0x69721217 rev=0x00
hdr=0x02
    vendor   = 'O2 Micro Inc'
    device   = 'OZ6912/711E0 SmartCardBus Controller'
    class    = bridge
    subclass = PCI-CardBus

PCMCIA-to-CF adapter does not cause Fatal trap.

If there are any other bits of information I can provide, please, let me
know.

-- 
Alexandre "Sunny" Kovalenko (Олександр Коваленко)