"Can't load kernel" after r337232 -> r337285 update (amd64)

[David Wolfskill]

Yesterday, the daily build/smoike-test of head yielded:

FreeBSD g1-215.catwhisker.org 12.0-CURRENT FreeBSD 12.0-CURRENT #68  r337232M/337232:1200076: Fri Aug  3 03:52:52 PDT 2018     root at g1-215.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY  amd64

(This is on my laptop; my build machine is busy doing the Saturday
"catch-up" packages build in partial preparation for tomorrow.)

This morning, after what seemed to be an "uneventful" build/install...
well, I didn't even get a loader menu.  (This was on the slice that
uses the Forth loader.  I haven't updated the slice that uses the
Lua loader today.)

Extracting the uname string from the installed kernel taht won't
load, I see:

FreeBSD 12.0-CURRENT #69  r337285M/337285:1200076: Sat Aug  4 03:55:21 PDT 2018
    root at g1-215.catwhisker.org:/common/S4/obj/usr/src/amd64.amd64/sys/CANARY
FreeBSD clang version 6.0.1 (tags/RELEASE_601/final 335540) (based on LLVM 6.0.1)

Links to various bits of possible interest are at
<http://www.catwhisker.org/~david/FreeBSD/history/> -- in particular, the

| amd64
| 
|     laptop head uname list dmesg build typescript -- updated daily 

part -- though the links are for the last successfully-booted kernel,
which would be yesterday's (r337232).

I can boot from other slices OK -- as I type, I'm on the stable/11 slice:
FreeBSD g1-215.catwhisker.org 11.2-STABLE FreeBSD 11.2-STABLE #699  r337280M/337285:1102501: Sat Aug  4 03:38:52 PDT 2018     root at g1-215.catwhisker.org:/common/S1/obj/usr/src/sys/CANARY  amd64

so given a clue or two, I may be able to do some poking & report results.

Peace,
david
-- 
David H. Wolfskill				david at catwhisker.org
Trump is gaslighting us: https://www.bbc.com/news/world-us-canada-44959300

See http://www.catwhisker.org/~david/publickey.gpg for my public key.
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