10.1 : release : uefi : amd64 : kernel trap 1 with interrupts disabled ...

[Mayuresh Kathe]

hello,

i have an hp-aio 18 which works well under uefi based ubuntu as well as 
non-uefi freebsd 10.1 rc3.

i downloaded the uefi-memstick image of freebsd-10.1-release for amd64, 
burned it to a sandisk thumbdrive using imagewriter under windows 7.

booted up the machine using it, but gave the following error during 
installer boot-up sequence;

kernel trap 1 with interrupts disabled

Fatal trap 1: privileged instruction fault while in kernel mode
cpuid = 0; apic id = 00
instruction pointer     = 0x20:0xffffffff80408000
stack pointer           = 0x28:0xffffffff814b5a70
frame pointer           = 0x28:0x0
code segment            = base 0x0, limit 0xfffff, type 0x1b
                         = DPL 0, pres 1, long 1, def32 0, gran 1
processor eflags        = resume, IOPL = 0
current process         = 0 ()
trap number             = 1
panic: privileged instruction fault
cpuid = 0
KDB: stack backtrace:
#0 0xffffffff80963000 at ??+0
#1 0xffffffff80928125 at ??+0
#2 0xffffffff80d24f1f at ??+0
#3 0xffffffff80d24b7c at ??+0
#4 0xffffffff80d0a782 at ??+0
Uptime: 1s

hope this is the right mailing list for this, else, may i please be 
pointed in the right direction?

thanks,

~mayuresh