Can't boot (zfs-on-root) with "options EARLY_AP_STARTUP" and "device pf"

Eric A. Borisch eborisch at
Fri Jun 9 22:04:46 UTC 2017

Good afternoon,

I tried to update the kernel on my Lenovo x230 (stable/11), and I would get
crashes on boot. *I am running a non-GENERIC kernel.* Bisecting the changes
from last-known-good, I found that I couldn't boot on any kernel past after
r318752. The next change to the kernel, r318763 [1], turned on
EARLY_AP_STARTUP by default.

I've narrowed it down to what appears to be a conflict with 'options
EARLY_AP_STARTUP' and 'device pf'. I can build a farily vanilla kernel with
these set, and it crashes on boot. (I have a few other options set to
enable root-on-zfs-on-geli.)

Any suggestions, other than 'don't do that?',
 - Eric


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