#2  0x00000000008487dd in handle_fatal_signal (sig=11) at 10.0/sql/signal_handler.cc:262

#3  <signal handler called>

#4  0x0000000000ec17aa in insert_dynamic (array=0x58, element=0x7ff1a6ffa208) at 10.0/mysys/array.c:89

#5  0x00000000005e1a46 in add_role_user_mapping (grantee=0x7ff1a896e070, role=0x0) at 10.0/sql/sql_acl.cc:2342

#6  0x00000000005f5695 in mysql_create_user (thd=0x7ff1b5f4c070, list=..., handle_as_role=true) at 10.0/sql/sql_acl.cc:9169

#7  0x0000000000668835 in mysql_execute_command (thd=0x7ff1b5f4c070) at 10.0/sql/sql_parse.cc:4038

#8  0x000000000066eb28 in mysql_parse (thd=0x7ff1b5f4c070, rawbuf=0x7ff1a8822088 "create role ''", length=14, parser_state=0x7ff1a6ffd630) at 10.0/sql/sql_parse.cc:6394

#9  0x00000000006619e2 in dispatch_command (command=COM_QUERY, thd=0x7ff1b5f4c070, packet=0x7ff1af24c071 "create role ''", packet_length=14) at 10.0/sql/sql_parse.cc:1296

#10 0x0000000000660d84 in do_command (thd=0x7ff1b5f4c070) at 10.0/sql/sql_parse.cc:993

#11 0x000000000077a4e5 in do_handle_one_connection (thd_arg=0x7ff1b5f4c070) at 10.0/sql/sql_connect.cc:1379

#12 0x000000000077a238 in handle_one_connection (arg=0x7ff1b5f4c070) at 10.0/sql/sql_connect.cc:1293

#13 0x0000000000a9d219 in pfs_spawn_thread (arg=0x7ff1af64cf90) at 10.0/storage/perfschema/pfs.cc:1853

#14 0x00007ff1d5371b50 in start_thread (arg=<optimized out>) at pthread_create.c:304

#15 0x00007ff1d3ec0a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112