This directory contains a minimal kernel configuration file for the Rpi2,
running armv7, based on GENERIC with seemingly-irrelevant lines commented
out. The host has 2 GB of swap on a USB flash drive, which also hosts /usr,
/var and /tmp. The finished kernel clocks in at

bob@www:/usr/src % ls -l /boot/kernel/kernel
-r-xr-xr-x  1 root  wheel  9410680 Feb 20 23:23 /boot/kernel/kernel
which is dissapointing; the generic kernel is about 11 MB. 


uname -a reports
FreeBSD www.zefox.com 12.0-CURRENT FreeBSD 12.0-CURRENT #0 r329412: Tue Feb 20 23:19:49 PST 2018     bob@www.zefox.com:/usr/obj/usr/src/arm.armv7/sys/ZEFOX  arm

Svnlite info /usr/src reports
Path: /usr/src
Working Copy Root Path: /usr/src
URL: svn://svn.freebsd.org/base/head
Relative URL: ^/head
Repository Root: svn://svn.freebsd.org/base
Repository UUID: ccf9f872-aa2e-dd11-9fc8-001c23d0bc1f
Revision: 329849
Node Kind: directory
Schedule: normal
Last Changed Author: pfg
Last Changed Rev: 329848
Last Changed Date: 2018-02-22 17:11:57 -0800 (Thu, 22 Feb 2018)
 

It compiles, boots and runs without obvious errors, but stalled on a
j1 buildworld with a stream of 

smsc0: warning: failed to create new mbuf

on the console. Both the console and all existing ssh sessions are
unreponsive, an attempt to open a new ssh session displayed

bob@raspberrypi:~ $ ssh com
ssh_exchange_identification: read: Connection reset by peer
bob@raspberrypi:~ $ 


I've never seen that message before, ordinarily ssh logins work fine.

Very strangely, the ssh session supporting a cu session to the RPi3's
serial console appears to be working quite normally. 

The top window stopped updating at 12 hours uptime, with c++ in pfault.
From past observation, pfaults are displayed for some time before lockup,
so it likely took less than 12 hours to develop. Looks like time to power
cycle it...