kernel panic with pccard insert on recent 7.0 CURRENT

hi, lists
i always get Fatal trap while insert a pccard with recent 7.0 current.
It seems that Can't recognize the pccard address?
thanks with any reply.

pccard0:Allocation failed for cfe 13
pccard0:Allocation failed for cfe 21
uart0: <Bora Telecom Inc Bora 3600 Rev 1.1> at port 0x3e8-0x3ef irq 11
function 0 config 29 on pccard0
uart0:[FILTER]

Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address = 0x0
fault code = supervisor read, page not present
instruction pointer = 0x20:0x0
stack pointer = 0x28:0xe2996cb0
frame pointer = 0x28:0xe2996cb8
code segment = base 0x0, limit 0xfffff, type 0x1b
= DPL 0, pres 1, def32 1, gran 1
processor eflags = interrupt enable, resume, IOPL = 0
current process = 21 (irq11: cbb0 cbb1+*)
[thread pid 21 tid 100013 ]
Stopped at 0: *** error reading from address 0 ***
db>bt
Tracing pid 21 tid 100013 td 0xc3f05c00
pccard_intr(c4285e00) at pccard_intr+0x12
cbb_func_intr(c4103140,0,c0a493ae,40b,c3f00064,...) at cbb_func_intr|0x51
ithread_loop(c404fab0,e2996d38,83fb5be8,ff06fc46,c3f4b804,...) at
ithread_loop+0
x1b5
fork_exit(c074ccd0,c404fab0,e2996d38) at fork_exit+0x57
fork_trampoline() at fork_trampoline+0x8
--- trap 0, eip = 0, esp = 0xe2996d70, ebp = 0 ---