Is it known problem, that zfs.ko could not be built with system compiler (clang 3.9.1) without optimization?

[Eugene Grosbein]

23.02.2017 3:47, Lev Serebryakov пишет:
> Hello Freebsd-stable,
>
>     Now if you build zfs.ko with -O0 it panics on boot.
>
>     If you use default optimization level, a lot of fbt DTreace probes are
>    missing.

If you use it with i386 (32 bits), you must use loader.conf tunnable: kern.kstack_pages=4
or corresponding kernel options KSTACK_PAGES=4, do you?