[Bug 294039] databases/postgresql14-server: jemalloc crashes triggered by autovacuum

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=294039

--- Comment #3 from Peter Much <pmc@citylink.dinoex.sub.org> ---
It is not related to autovacuum. After I followed recommendation from postgres
group and upgraded PG r15 to r16, I did somewhere miss that MIT-krb5
distinguishes FQDN and shortname, and some of my applications did hammer the DB
with futile logins. Then I got backtraces straight from gethostbyaddr() into
malloc():

https://forums.freebsd.org/threads/trouble-bus-errors-and-segfaults-in-libc-so-from-postgres.101876/post-750679

I cannot perfectly align that security update. It was built and deployed on Jan
31, but the server was rebooted into -p8 on Feb 2 16:05, while the first crash
happened on Feb 2 03:52. It is unclear when exactly the binaries on that
respective jail have been replaced.

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