Bug#1012600: Further info

[mc5686]

Apparently root cause is function `bio_alloc()` changed signature qith 
newer kernels 5.17.x -> 5.18.0.
Apparently upstream sources were not updated; specifically file 
`.../zfs/vdev_disk.c` still uses the old (2 parameter) function instead 
of the newer (4 parameters) one.

I will report also upstream.
Regards
Mauro