Date: Wed, 29 Aug 2018 12:37:52 +0300 From: Yuri Pankov <yuripv@yuripv.net> To: freebsd-current <freebsd-current@freebsd.org> Subject: r336921 broke booting on MBP 2017, EFIRT related Message-ID: <499f05f4-4fab-9b31-5d37-83ecb554013c@yuripv.net>
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Hi,
I've noticed that all recent snapshots (ALPHA3, ALPHA2, ALPHA1,
20180802) fail to boot on MBP 2017:
kbd0 at kbdmux0
netmap: loaded module
nexus0
Fatal trap 12: page fault while in kernel mode
cpuid = 2: apic id = 02
fault virtual address = 0x74c64a50
fault code = supervisor read data, page not present
instruction pointer = 0x20: 0x7abece31
stack pointer = 0x28: 0xffffffff82b2f7c0
frame pointer = 0x28: 0xffffffff82b2f810
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)
[ thread pid 0 tid 100000 ]
Stopped at 0x7abece31: calll *0x18(%rax)
db>
Sadly, there's no support for internal keyboard yet (it's connected via
SPI), and external USB one stops working.
A (not so quick) bisect is pointing at r336921, which enabled EFIRT.
Some questions here:
- is this something that can/should be fixed?
- can we print some "enabling EFIRT" message to the console to make
guesses about the problem source a bit easier?
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