panic: unknown/reserved trap (trap number 30)

Hi,

Every time I try to do verbose boot my todays CURRENT panics with message:
panic: unknown/reserved trap

The normal boot process gives no error.

Panics occur durring GEOM setup. The other thing, is when I tried Oct 29'th
kernel, after boot -v (which succed) I got some new disks:
ad6s1da
ad6s1dd
And so on, which does not show up in normal boot process (regradless if this
if new kernel or from 29'th Oct)

Please let me know if there is any additional info I may provide.

Cheers,

Wiktor Niesiobędzki

The last lines of dmesg:
DUMMYNET initialized (011031)
IP Filter: v3.4.31 initialized.  Default = pass all, Logging = enabled
lo0: bpf attached
ata0-master: pio=0x0c wdma=0x22 udma=0x45 cable=80pin
ad0: setting PIO4 on VIA 8235 chip
GEOM: create disk ad0 dp=0xc2b37970
ad0: <ST380011A/3.06> ATA-6 disk at ata0-mainstruction pointer  =
0x8:0xc04d0a3d
stack pointer           = 0x10:0xc0821b40
frame pointer           = 0x10:0xc0821b44
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, def32 1, gran 1
processor eflags        = interrupt enabled, IOPL = 0
current process         = 0 (swapper)
trap number             = 30
panic: unknown/reserved trap


And the backtrace:
panic: unknown/reserved trap

syncing disks, buffers remaining... 180 180 180 180 180 180 180 180 180 180
180 180 180 180 180 180 180 180 180 180
giving up on 147 buffers
Uptime: 21s
Dumping 255 MB
 16 32 48 64 80 96 112 128 144 160 176 192 208 224 240
---
Reading symbols from /boot/kernel/if_dc.ko...done.
Loaded symbols for /boot/kernel/if_dc.ko
Reading symbols from /boot/kernel/miibus.ko...done.
Loaded symbols for /boot/kernel/miibus.ko
Reading symbols from /boot/kernel/if_rl.ko...done.
Loaded symbols for /boot/kernel/if_rl.ko
Reading symbols from /boot/kernel/random.ko...done.
Loaded symbols for /boot/kernel/random.ko
Reading symbols from /boot/kernel/dummynet.ko...done.
Loaded symbols for /boot/kernel/dummynet.ko
Reading symbols from /boot/kernel/ipfw.ko...done.
Loaded symbols for /boot/kernel/ipfw.ko
#0  doadump () at /home/usr/src/sys/kern/kern_shutdown.c:240
240             dumping++;
(kgdb) bt
#0  doadump () at /home/usr/src/sys/kern/kern_shutdown.c:240
#1  0xc04c9470 in boot (howto=256) at
/home/usr/src/sys/kern/kern_shutdown.c:372
#2  0xc04c9858 in panic () at /home/usr/src/sys/kern/kern_shutdown.c:550
#3  0xc05e5092 in trap_fatal (frame=0xce564808, eva=0) at
/home/usr/src/sys/i386/i386/trap.c:823
#4  0xc05e4a62 in trap (frame=
      {tf_fs = 24, tf_es = 16, tf_ds = 16, tf_edi = 1, tf_esi = 9600, tf_ebp =
      -833206196, tf_isp = -833206220, tf_ebx = 1016, tf_edx = 1017, tf_ecx =
      1021, tf_eax = 582, tf_trapno = 30, tf_err = 0, tf_eip = -1068692931,
      tf_cs = 8, tf_eflags = 582, tf_esp = 9600, tf_ss = -833206136}) at
      /home/usr/src/sys/i386/i386/trap.c:618
#5  0xc05d5b58 in calltrap () at {standard input}:94
#6  0xc05c10c0 in siocnputc (cd=0x0, c=50) at
/home/usr/src/sys/dev/sio/sio.c:3208
#7  0xc0503fda in cnputc (c=50) at /home/usr/src/sys/kern/tty_cons.c:571
#8  0xc04ec9fc in putchar (c=50, arg=0xce5649a4) at
/home/usr/src/sys/kern/subr_prf.c:348
#9  0xc04ed5f7 in kvprintf (fmt=---Can't read userspace from dump, or kernel
process---

) at /home/usr/src/sys/kern/subr_prf.c:760
#10 0xc04ec8e7 in printf (fmt=0x0) at /home/usr/src/sys/kern/subr_prf.c:299
#11 0xc04935fe in g_slice_config (gp=0xc2b49a80, idx=4, how=1,
offset=2147483648, length=21474836480, sectorsize=0, fmt=0x0) at
/home/usr/src/sys/geom/geom_slice.c:360
#12 0xc05cd252 in g_bsd_modify (gp=0xc2b49a80, label=0xc2b4d12c "WEV\202") at
/home/usr/src/sys/geom/geom_bsd.c:159
#13 0xc05ce0b4 in g_bsd_taste (mp=0xc2b49a80, pp=0xce564c7c, flags=0) at
/home/usr/src/sys/geom/geom_bsd.c:568
#14 0xc049424d in g_new_provider_event (arg=0xc2b49e80, flag=0) at
/home/usr/src/sys/geom/geom_subr.c:344
#15 0xc04916f9 in one_event () at /home/usr/src/sys/geom/geom_event.c:182
#16 0xc04917c5 in g_run_events () at /home/usr/src/sys/geom/geom_event.c:202
#17 0xc04927e5 in g_event_procbody () at
/home/usr/src/sys/geom/geom_kern.c:134
#18 0xc04b1ed0 in fork_exit (callout=0xc04927c0 <g_event_procbody>, arg=0x0,
frame=0x0) at /home/usr/src/sys/kern/kern_fork.c:793