ndis panic on current from (March 29)

Hi. I have a panic on my notebook with current from March 29.
I've got it while shutting down. Here is details:

root_at_orion:/usr/obj/usr/src/sys/GENERIC# kgdb kernel.debug /var/crash/vmcore.1
[GDB will not be able to debug user-mode threads: /usr/lib/libthread_db.so: Undefined symbol "ps_pglobal_lookup"]
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Unread portion of the kernel message buffer:
<118>Writing entropy file:
<118>.
<118>Terminated
<118>.
<5>ndis0: link state changed to DOWN
<118>Apr  5 23:08:44 orion syslogd: exiting on signal 15
Kernel page fault with the following non-sleepable locks held:
exclusive sleep mutex ntoskrnl dispatch lock (NDIS lock) r = 0 (0xc0d31554) locked _at_ /usr/src/sys/modules/ndis/../../compat/ndis/subr_ntoskrnl.c:3599
KDB: stack backtrace:
db_trace_self_wrapper(c094ddcd) at db_trace_self_wrapper+0x25
kdb_backtrace(1,c3ef2900,c,e288ec14,e288ec08,...) at kdb_backtrace+0x29
witness_warn(5,0,c097456d) at witness_warn+0x192
trap(e288ec14) at trap+0x10b
calltrap() at calltrap+0x6
--- trap 0xc, eip = 0xc06d0605, esp = 0xe288ec54, ebp = 0xe288ec60 ---
_callout_stop_safe(deadc0de,0,c428d508,e288ec98,c0d293bb,...) at _callout_stop_safe+0x19
ntoskrnl_remove_timer(c0d31554,0,c0d2dbc2,e0f,e288eccc,...) at ntoskrnl_remove_timer+0xf
ntoskrnl_timercall(c428d508) at ntoskrnl_timercall+0x27
softclock(0) at softclock+0x22f
ithread_execute_handlers(c3ef2900,c3f31280) at ithread_execute_handlers+0x121
ithread_loop(c3e9fbe0,e288ed38) at ithread_loop+0x67
fork_exit(c06aea04,c3e9fbe0,e288ed38) at fork_exit+0xac
fork_trampoline() at fork_trampoline+0x8
--- trap 0, eip = 0, esp = 0xe288ed70, ebp = 0 ---


Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address   = 0x20315f47
fault code              = supervisor read, page not present
instruction pointer     = 0x20:0xc06d0605
stack pointer           = 0x28:0xe288ec54
frame pointer           = 0x28:0xe288ec60
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         = 12 (swi4: clock sio)
panic: from debugger
cpuid = 0
Uptime: 1h29m53s
Physical memory: 1003 MB
Dumping 170 MB: 155 139 123 107 91 75 59 43 27 11

#0  doadump () at pcpu.h:172
172             __asm __volatile("movl %%fs:0,%0" : "=r" (td));
(kgdb) bt
#0  doadump () at pcpu.h:172
#1  0xc06c2f68 in boot (howto=260) at /usr/src/sys/kern/kern_shutdown.c:409
#2  0xc06c3272 in panic (fmt=0xc090923c "from debugger") at /usr/src/sys/kern/kern_shutdown.c:563
#3  0xc047780e in db_panic (addr=-1066596859, have_addr=0, count=-1, modif=0xe288ea4c "") at /usr/src/sys/ddb/db_command.c:433
#4  0xc04777a7 in db_command (last_cmdp=0xc0a23a44, cmd_table=0x0) at /usr/src/sys/ddb/db_command.c:401
#5  0xc0477862 in db_command_loop () at /usr/src/sys/ddb/db_command.c:453
#6  0xc04794ad in db_trap (type=12, code=0) at /usr/src/sys/ddb/db_main.c:222
#7  0xc06e2170 in kdb_trap (type=12, code=0, tf=0xe288ec14) at /usr/src/sys/kern/subr_kdb.c:502
#8  0xc08c0b39 in trap_fatal (frame=0xe288ec14, eva=540106567) at /usr/src/sys/i386/i386/trap.c:859
#9  0xc08c01bf in trap (frame=0xe288ec14) at /usr/src/sys/i386/i386/trap.c:276
#10 0xc08aa5eb in calltrap () at /usr/src/sys/i386/i386/exception.s:139
#11 0xc06d0605 in _callout_stop_safe (c=0xdeadc0de, safe=0) at /usr/src/sys/kern/kern_timeout.c:489
#12 0xc0d2908b in ?? ()
#13 0xdeadc0de in ?? ()
#14 0x00000000 in ?? ()
#15 0xc428d508 in ?? ()
#16 0xe288ec98 in ?? ()
#17 0xc0d293bb in ?? ()
#18 0xc0d31554 in ?? ()
#19 0x00000000 in ?? ()
#20 0xc0d2dbc2 in ?? ()
#21 0x00000e0f in ?? ()
#22 0xe288eccc in ?? ()
#23 0xc06d018a in softclock (dummy=0xc0d31554) at /usr/src/sys/kern/kern_timeout.c:238
Previous frame inner to this frame (corrupt stack?)

Notebook Dell Inspiron 1300 with GENERIC kernel.

ndis0_at_pci2:3:0: class=0x028000 card=0x00051028 chip=0x431914e4 rev=0x02 hdr=0x00
    vendor     = 'Broadcom Corporation'
    device     = 'Dell Wireless 1470 DualBand WLAN'
    class      = network

/etc/wpa_supplicant.conf:

ctrl_interface=/var/run/wpa_supplicant
ctrl_interface_group=wheel
#
# office network; allow all valid ciphers
network={
        ssid="xxxxxxx"
        scan_ssid=1
        key_mgmt=WPA-PSK
        psk="xxxxxxxxxxxxxxxxxxxx"
}

/etc/rc.conf:

ifconfig_ndis0="ssid xxxxxxx"
ifconfig_ndis0="wpa inet 10.1.1.232 netmask 0xffffff00"

Also i have found that if i don't use it for some time i have to up/down
ndis interface to be able to use it again.

-- 
======================================================================  
- Best regards, Nikolay Pavlov. <<<-----------------------------------    
======================================================================