MariaDB [(none)]> set global session_track_system_variables=crash_is_inevitable;

            ERROR 1193 (HY000): Unknown system variable 'crash_is_inevitable'

            MariaDB [(none)]> exit;

            ...

            root@ip-172-31-92-119:~# mysql

            mysql: Deprecated program name. It will be removed in a future release, use '/usr/bin/mariadb' instead

            ERROR 2013 (HY000): Lost connection to server at 'handshake: reading initial communication packet', system error: 11

- stack trace

            Thread pointer: 0x7f923c000fb8

            Attempting backtrace. You can use the following information to find out

            where mysqld died. If you see no messages after this, something went

            terribly wrong...

            stack_bottom = 0x7f92404f7dd8 thread_stack 0x49000

            /usr/sbin/mysqld(my_print_stacktrace+0x32)[0x556cf07df252]

            /usr/sbin/mysqld(handle_fatal_signal+0x55d)[0x556cf027276d]

            /lib/x86_64-linux-gnu/libpthread.so.0(+0x14420)[0x7f924c924420]

            /lib/x86_64-linux-gnu/libc.so.6(+0x1886e5)[0x7f924c56d6e5]

            /usr/sbin/mysqld(my_strdup+0x1d)[0x556cf07db72d]

            /usr/sbin/mysqld(_ZN23Session_sysvars_tracker4initEP3THD+0x28)[0x556ceffaac38]

            /usr/sbin/mysqld(_Z18plugin_thdvar_initP3THD+0x1d2)[0x556cf0076512]

            /usr/sbin/mysqld(_ZN3THD4initEv+0x30)[0x556cf0016c90]

            /usr/sbin/mysqld(_ZN3THD11change_userEv+0x7c)[0x556cf001707c]

            /usr/sbin/mysqld(_ZN3THD15reset_for_reuseEv+0x1e)[0x556cf00171fe]

            /usr/sbin/mysqld(_ZN7CONNECT10create_thdEP3THD+0x28)[0x556cf01686e8]

            /usr/sbin/mysqld(_Z29one_thread_per_connection_endP3THDb+0x29d)[0x556ceff9532d]

            /usr/sbin/mysqld(_Z24do_handle_one_connectionP7CONNECT+0x16b)[0x556cf0168a4b]

            /usr/sbin/mysqld(handle_one_connection+0x3f)[0x556cf0168c2f]

            /lib/x86_64-linux-gnu/libpthread.so.0(+0x8609)[0x7f924c918609]

            /lib/x86_64-linux-gnu/libc.so.6(clone+0x43)[0x7f924c504133]

            Trying to get some variables.

            Some pointers may be invalid and cause the dump to abort.

            Query (0x0): (null)

            Connection ID (thread ID): 1274

            Status: NOT_KILLED