If MariaDB server is started with skip-innodb, but with plugin-innodb-sys-datafiles:
SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_DATAFILES;
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#3 <signal handler called>
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#4 0x0000000000a4d29e in pfs_mutex_enter_func (mutex=0x0, file_name=0xfef858 "10.0/storage/innobase/handler/i_s.cc", line=7860) at 10.0/storage/innobase/include/sync0sync.ic:237
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#5 0x0000000000a5b062 in i_s_sys_datafiles_fill_table (thd=0x7f3059f53070, tables=0x7f30474062e8) at 10.0/storage/innobase/handler/i_s.cc:7860
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#6 0x00000000006e4207 in do_fill_table (thd=0x7f3059f53070, table_list=0x7f30474062e8, join_table=0x7f3047422088) at 10.0/sql/sql_show.cc:8053
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#7 0x00000000006e4580 in get_schema_tables_result (join=0x7f3047406c88, executed_place=PROCESSED_BY_JOIN_EXEC) at 10.0/sql/sql_show.cc:8151
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#8 0x0000000000689975 in JOIN::exec_inner (this=0x7f3047406c88) at 10.0/sql/sql_select.cc:2521
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#9 0x0000000000688f54 in JOIN::exec (this=0x7f3047406c88) at 10.0/sql/sql_select.cc:2356
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#10 0x000000000068c517 in mysql_select (thd=0x7f3059f53070, rref_pointer_array=0x7f3059f57688, tables=0x7f30474062e8, wild_num=1, fields=..., conds=0x0, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2684619520, result=0x7f3047406c68, unit=0x7f3059f56d38, select_lex=0x7f3059f57418) at 10.0/sql/sql_select.cc:3294
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#11 0x0000000000682974 in handle_select (thd=0x7f3059f53070, lex=0x7f3059f56c78, result=0x7f3047406c68, setup_tables_done_option=0) at 10.0/sql/sql_select.cc:372
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#12 0x00000000006566c0 in execute_sqlcom_select (thd=0x7f3059f53070, all_tables=0x7f30474062e8) at 10.0/sql/sql_parse.cc:5250
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#13 0x000000000064e7cc in mysql_execute_command (thd=0x7f3059f53070) at 10.0/sql/sql_parse.cc:2571
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#14 0x0000000000658f26 in mysql_parse (thd=0x7f3059f53070, rawbuf=0x7f3047406088 "SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_DATAFILES", length=53, parser_state=0x7f305f46a4b0) at 10.0/sql/sql_parse.cc:6394
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#15 0x000000000064b8a8 in dispatch_command (command=COM_QUERY, thd=0x7f3059f53070, packet=0x7f3048fe8071 "SELECT * FROM INFORMATION_SCHEMA.INNODB_SYS_DATAFILES", packet_length=53) at 10.0/sql/sql_parse.cc:1296
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#16 0x000000000064abf6 in do_command (thd=0x7f3059f53070) at 10.0/sql/sql_parse.cc:993
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#17 0x000000000076b719 in do_handle_one_connection (thd_arg=0x7f3059f53070) at 10.0/sql/sql_connect.cc:1379
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#18 0x000000000076b46c in handle_one_connection (arg=0x7f3059f53070) at 10.0/sql/sql_connect.cc:1293
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#19 0x0000000000a121af in pfs_spawn_thread (arg=0x7f30493cdb70) at 10.0/storage/perfschema/pfs.cc:1853
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#20 0x00007f305e841e9a in start_thread (arg=0x7f305f46b700) at pthread_create.c:308
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#21 0x00007f305d7353fd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
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#22 0x0000000000000000 in ?? ()
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It is also reproducible on MySQL 5.6.10 but not on the current MySQL 5.6 tree, so hopefully it will be fixed by the next InnoDB or bugfix merge.
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