Fatal trap 12 during boot

[Joel Dahl]

Fresh kernel+world always panics with "Fatal trap 12: page fault while
in kernel mode" during boot, right after ata.  Kernel from Feb 3 works
without any problems.  Kernel is plain GENERIC.

Panic message:   http://people.freebsd.org/~joel/panics/002/panic001.jpg
Backtrace part1: http://people.freebsd.org/~joel/panics/002/panic002.jpg
Backtrace part2: http://people.freebsd.org/~joel/panics/002/panic003.jpg

-- 
Joel