Fatal trap 12: page fault while in kernel mode
cpuid = 2; apic id = 02
fault virtual address   = 0x64
fault code              = supervisor read data, page not present
instruction pointer     = 0x20:0xffffffff8064cfd8
stack pointer           = 0x28:0xffffff845f4b37d0
frame pointer           = 0x28:0xffffff845f4b3850
code segment            = base 0x0, limit 0xfffff, type 0x1b
                        = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = interrupt enabled, resume, IOPL = 0
current process         = 22608 (sh)
trap number             = 12
panic: page fault
cpuid = 2
Uptime: 14m15s
Dumping 1782 out of 16283 
MB:..1%..11%..21%..31%..41%..51%..61%..71%..81%..91%

Reading symbols from /boot/kernel/nullfs.ko...Reading symbols from 
/boot/kernel/nullfs.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/nullfs.ko
Reading symbols from /boot/kernel/zfs.ko...Reading symbols from 
/boot/kernel/zfs.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/zfs.ko
Reading symbols from /boot/kernel/opensolaris.ko...Reading symbols from 
/boot/kernel/opensolaris.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/opensolaris.ko
Reading symbols from /boot/kernel/geom_mirror.ko...Reading symbols from 
/boot/kernel/geom_mirror.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/geom_mirror.ko
Reading symbols from /boot/kernel/tmpfs.ko...Reading symbols from 
/boot/kernel/tmpfs.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/tmpfs.ko
Reading symbols from /boot/kernel/pf.ko...Reading symbols from 
/boot/kernel/pf.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/pf.ko
Reading symbols from /boot/kernel/linprocfs.ko...Reading symbols from 
/boot/kernel/linprocfs.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/linprocfs.ko
Reading symbols from /boot/kernel/linux.ko...Reading symbols from 
/boot/kernel/linux.ko.symbols...done.
done.
Loaded symbols for /boot/kernel/linux.ko
#0  doadump (textdump=Variable "textdump" is not available.
) at pcpu.h:224
224     pcpu.h: No such file or directory.
        in pcpu.h
(kgdb)
(kgdb)
(kgdb) next
The program is not being run.
(kgdb) bt
#0  doadump (textdump=Variable "textdump" is not available.
) at pcpu.h:224
#1  0xffffffff8044df10 in kern_reboot (howto=260) at 
/usr/src/sys/kern/kern_shutdown.c:442
#2  0xffffffff8044e3b4 in panic (fmt=0x0) at 
/usr/src/sys/kern/kern_shutdown.c:607
#3  0xffffffff80683bcd in trap_fatal (frame=0xfffffe02386e7488, 
eva=Variable "eva" is not available.
) at /usr/src/sys/amd64/amd64/trap.c:819
#4  0xffffffff80683ed8 in trap_pfault (frame=0xffffff845f4b3720, 
usermode=0) at /usr/src/sys/amd64/amd64/trap.c:735
#5  0xffffffff806840ec in trap (frame=0xffffff845f4b3720) at 
/usr/src/sys/amd64/amd64/trap.c:474
#6  0xffffffff8066f55f in calltrap () at 
/usr/src/sys/amd64/amd64/exception.S:228
#7  0xffffffff8064cfd8 in uma_zfree_arg (zone=0x4, 
item=0xfffffe0315120440, udata=0xfffffe0315120ca0) at 
/usr/src/sys/vm/uma_core.c:2545
#8  0xffffffff8043b6d0 in free (addr=0xfffffe0315120440, 
mtp=0xffffffff8097e960) at /usr/src/sys/kern/kern_malloc.c:569
#9  0xffffffff80491030 in free_unr (uh=0xfffffe00074fda40, item=2) at 
/usr/src/sys/kern/subr_unit.c:884
#10 0xffffffff80495aa1 in pipe_close (fp=Variable "fp" is not available.
) at /usr/src/sys/kern/sys_pipe.c:1462
#11 0xffffffff80411468 in _fdrop (fp=0xfffffe000b8a77d0, td=Variable 
"td" is not available.
) at file.h:314
#12 0xffffffff80412d3c in closef (fp=0xfffffe000b8a77d0, 
td=0xfffffe0238d2d460) at /usr/src/sys/kern/kern_descrip.c:2246
#13 0xffffffff80413d6c in fdfree (td=0xfffffe0238d2d460) at 
/usr/src/sys/kern/kern_descrip.c:1950
#14 0xffffffff804214d3 in exit1 (td=0xfffffe0238d2d460, rv=953341024) at 
/usr/src/sys/kern/kern_exit.c:281
#15 0xffffffff80422390 in sys_sys_exit (td=Variable "td" is not 
available.
) at /usr/src/sys/kern/kern_exit.c:110
#16 0xffffffff8068353b in amd64_syscall (td=0xfffffe0238d2d460, 
traced=0) at subr_syscall.c:131
#17 0xffffffff8066f847 in Xfast_syscall () at 
/usr/src/sys/amd64/amd64/exception.S:387
#18 0x0000000800d7b6bc in ?? ()
Previous frame inner to this frame (corrupt stack?)