re: hang when updating to 10.99.14

[matthew green <mrg%eterna23.net@localhost>]

> (gdb) print panicstr
> $2 = 0xffffffff80f06020 <scratchstr> "cpu0: softints stuck for 16 seconds"

you'll need to find cpu0's back trace.  try feeding the core
into crash(8) instead of GDB, it should be easier to find.

FWIW, i upgraded my main desktop to sources from about 70
hours ago, shortly after 70 hours ago, no problems here yet,
and i've done a full local pkg rebuild and quite a lot of
other random (mostly network) IO.  *touches wood*.


.mrg.