Fatal trap 12: page fault while in kernel mode

Using GENERIC kernel with 8.0-BETA1 #2
dmesg with trace: http://pastebin.com/m4423908c

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Fatal trap 12: page fault while in kernel mode
cpuid = 0; apic id = 00
fault virtual address	= 0x0
fault code		= supervisor read instruction, page not present
instruction pointer	= 0x20:0x0
stack pointer	        = 0x28:0xffffffff811846a0
frame pointer	        = 0x28:0xffffffff811846f0
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		= 0 (swapper)
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Booting with ACPI disabled gives me this error:

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Trying to mount root from zfs:zfsroot/root
ROOT MOUNT ERROR:

If you have invalid mount options, reboot, and try the following from
the loader prompt:

       set vfs.root.mountfrom.options=rw

and then remove the invalid options from /etc/fstab

Loader varaibles
vfs.root.mountfrom="zfs:zfsroot/zfsroot"
vfs.root.mountfrom.options=

Manual root filesystem specification:
<fstype>:<device> Mount <device> using filesystem <fstype>
eg. ufs:da0s1a
? List valid disk boot devices
<empty line> Abort manual input

mountroot>
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