DTB provided by loader.efi from head -r317181 on pine64 smashed by zfs.ko ?

Hello,

I build current -r317181 with crochet for my PINE64.

the kernel can boot with loader.conf.local:

geom_mirror_load="YES"

If I add to loader.conf.local:

zfs_load="YES"

or if I strike the space bar during loader.efi and I load zfs manually:

OK load zfs
...
OK boot

the kernel don't boot and the console stay with the last line:

Using DTB provided by EFI at 0x49000000.

Moreover the opensolaris.ko is not loader.

Maybe DTB is smashed by zfs.ko

Any idea ?

Henri

PS with r312006M from RaspBSD all is OK and I can user zfs as root 
filesystem.