/usr/lib64/mariadb/plugin/ha_connect.so references dlerror, dlsym, dlclose, dlopen, but was not linked with -ldl. Similarly, /usr/lib64/mariadb/plugin/server_audit.so references dlsym without being linked with -ldl. Such incorrectly linked DSOs may cause problems at run time (including crashes during dlopen).
mariadb-10.2.12-5.fc27 has been submitted as an update to Fedora 27. https://bodhi.fedoraproject.org/updates/FEDORA-2018-66833616aa
Fixed in git in both Rawhide and F27 by adding the "-ldl" flag. Moving to F27 to be took care by BODHI.
mariadb-10.2.12-5.fc27 has been pushed to the Fedora 27 testing repository. If problems still persist, please make note of it in this bug report. See https://fedoraproject.org/wiki/QA:Updates_Testing for instructions on how to install test updates. You can provide feedback for this update here: https://bodhi.fedoraproject.org/updates/FEDORA-2018-66833616aa
mariadb-10.2.12-5.fc27 has been pushed to the Fedora 27 stable repository. If problems still persist, please make note of it in this bug report.