kern/52714: NetBSD-8_BETA on Dell R740 crashes to BIOS on boot

[kardel%netbsd.org@localhost]

>Number:         52714
>Category:       kern
>Synopsis:       NetBSD-8_BETA on Dell R740 crashes to BIOS on boot
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    kern-bug-people
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Fri Nov 10 10:45:00 +0000 2017
>Originator:     Frank Kardel
>Release:        NetBSD 8.0_BETA-2017-11-10
>Organization:
>Environment:
	Install image http://nycdn.netbsd.org/pub/NetBSD-daily/netbsd-8/201711100000Z/images/NetBSD-8.0_BETA-amd64-uefi-install.img.gz
Architecture: x86_64
Machine: amd64
>Description:
	System boot into bootloader, loads kernel, crashes into BIOS showing:

PowerEdge R740 - BIOS 1.1.7
A system restart is required. The system detected an exception during the UEFI
pre-boot environment.
-------------------------------------------------------------------------------
Type: Invalid opcode (06) Source: Software (UEFI0004) on BSP
AX=00000000569DCD0C BX=0000000000000000 SI=0000000000000007 DI=00000000569DCDF9
CX=0000000000000000 DX=000000000000046C R8=00000000569DD1B4 R9=00000000569DD1EC
10=0000000000000000 11=FFFFFFFFFFFFFFFC 12=0000000000000000 13=0000000000000000
14=0000000000000000 15=0000000000000000 BP=0000000000000000 SP=0000000066FD03D8
IP=000000000000001B Flags=00010206  CurrentTPL = 04, LastEventTime 00000031ECB2

Stack trace is not available. Further testing requires kern/52713 to be resolved
as this will be a production system that is off-site.

>How-To-Repeat:
	Fill a USB stick with above image, boot, look at exception screen.
>Fix:
	-

>Unformatted: