mariadb 10.3.7 crashes straight away on freebsd, doesnt matter if upgrading from 10.2 or starting fresh. I dont get any output to logs either.
FreeBSD version for me is 11.1, ive also tested on another computer with same results.
And then add alot of users on #freebsd who had the same issue.
here is output from truss
to reproduce just install mariadb10.3 from ports (pkg install mariadb103-server)
and /usr/local/etc/rc.d/mysql-server onestart