Re: r319971 -> r320351: Fatal error 'Cannot allocate red zone for initial thread'

On Mon, Jun 26, 2017 at 10:29:47AM +0200, O. Hartmann wrote:
> Over the past week we did not update several 12-CURRENT running development
> hosts, so today is the first day of performing this task.
> 
> First I hit the very same problem David Wolfskill reported earlier, a fatal
> trap 12, but fowllowing the thread, I did as advised: removing /usr/obj
> completely (we use filemon/WITH_META_MODE=YES all over the place) and
> recompiling world and kernel.
> 
> Since tag 20170617 in /usr/src/UPDATING referred to the INO64 update and the
> INO64 update hasn't performed so far starting from r319971, I installed the
> kernel, rebooted the box in single user mode (this time smoothly), did a
> mergemaster and tried to do "make installworld" - but the box instantanously
> bails out:
> 
> [...]
> Fatal error 'Cannot allocate red zone for initial thread' at line 392 in
> file /usr/src/lib/libthread/thr_init.c
> pid 60 (cc) uid0: exited on signal 6 ...

It is strange that cc is executed during installworld.
Anyway, show ktrace of the failure.