(gdb) bt #0 0x00007f687cc8d2c1 in pthread_kill () from /lib64/libpthread.so.0 #1 0x0000000000c99b53 in my_write_core (sig=11) at /tmp/mariadb-10.0.11/mysys/stacktrace.c:457 #2 0x000000000073487f in handle_fatal_signal (sig=11) at /tmp/mariadb-10.0.11/sql/signal_handler.cc:262 #3 #4 0x000000000073a2e8 in check_limit_rows_examined (this=0x7f685f3be070) at /tmp/mariadb-10.0.11/sql/sql_class.h:2479 #5 increment_statistics (offset=&system_status_var::ha_read_key_count, this=0x7f6877b96888) at /tmp/mariadb-10.0.11/sql/sql_class.h:4867 #6 handler::ha_index_read_map (this=0x7f6877b96888, buf=0x7f685f7ac088 "\376\005\060.0.2", key=, keypart_map=1, find_flag=HA_READ_KEY_OR_NEXT) at /tmp/mariadb-10.0.11/sql/handler.cc:2587 #7 0x00007f6865c614e7 in oqgraph3::cursor::seek_to (this=this@entry=0x7f6877bf84c0, origid=..., destid=...) at /tmp/mariadb-10.0.11/storage/oqgraph/oqgraph_thunk.cc:503 #8 0x00007f6865c54d68 in find_vertex (g=..., id=1) at /tmp/mariadb-10.0.11/storage/oqgraph/oqgraph_shim.h:480 #9 open_query::oqgraph_share::find_vertex (this=, id=1) at /tmp/mariadb-10.0.11/storage/oqgraph/graphcore.cc:485 #10 0x00007f6865c55be3 in open_query::oqgraph::search (this=0x7f68657b4740, latch=latch@entry=0x7f687cf0e0cc, orig_id=orig_id@entry=0x7f687cf0e0d0, dest_id=dest_id@entry=0x0) at /tmp/mariadb-10.0.11/storage/oqgraph/graphcore.cc:726 #11 0x00007f6865c535b7 in ha_oqgraph::index_read_idx (this=this@entry=0x7f685f4a4088, buf=buf@entry=0x7f685f7aa288 "\374\rbreadth_first", index=, key=key@entry=0x7f685f1380b0 "", key_len=key_len@entry=44, find_flag=find_flag@entry=HA_READ_KEY_EXACT) at /tmp/mariadb-10.0.11/storage/oqgraph/ha_oqgraph.cc:966 #12 0x00007f6865c53748 in ha_oqgraph::index_read (this=0x7f685f4a4088, buf=0x7f685f7aa288 "\374\rbreadth_first", key=0x7f685f1380b0 "", key_len=44, find_flag=HA_READ_KEY_EXACT) at /tmp/mariadb-10.0.11/storage/oqgraph/ha_oqgraph.cc:815 #13 0x00007f6865c54002 in handler::index_read_map (this=0x7f685f4a4088, buf=0x7f685f7aa288 "\374\rbreadth_first", key=0x7f685f1380b0 "", keypart_map=, find_flag=HA_READ_KEY_EXACT) at /tmp/mariadb-10.0.11/sql/handler.h:2888 #14 0x000000000073a279 in handler::ha_index_read_map (this=this@entry=0x7f685f4a4088, buf=0x7f685f7aa288 "\374\rbreadth_first", key=0x7f685f1380b0 "", keypart_map=3, find_flag=HA_READ_KEY_EXACT) at /tmp/mariadb-10.0.11/sql/handler.cc:2585 #15 0x000000000073f7f7 in handler::read_range_first (this=0x7f685f4a4088, start_key=0x7f685f4a4170, end_key=0x7f685f4a4190, eq_range_arg=, sorted=) at /tmp/mariadb-10.0.11/sql/handler.cc:5362 #16 0x00000000006c4bb9 in handler::multi_range_read_next (this=0x7f685f4a4088, range_info=0x7f687cf0e358) at /tmp/mariadb-10.0.11/sql/multi_range_read.cc:296 #17 0x000000000082d79f in QUICK_RANGE_SELECT::get_next (this=0x7f687a856740) at /tmp/mariadb-10.0.11/sql/opt_range.cc:11673 #18 0x0000000000732fc9 in find_all_keys (found_rows=0x7f687cf0ee18, pq=, tempfile=0x7f687cf0e630, buffpek_pointers=0x7f687cf0e7d0, fs_info=0x7f687cf0e540, select=0x7f685f135198, param=0x7f687cf0e5b0) at /tmp/mariadb-10.0.11/sql/filesort.cc:739 #19 filesort (thd=thd@entry=0x7f685f213070, table=table@entry=0x7f685f756070, sortorder=, s_length=, select=select@entry=0x7f685f135198, max_rows=max_rows@entry=18446744073709551615, sort_positions=sort_positions@entry=false, examined_rows=examined_rows@entry=0x7f687cf0ee10, found_rows=found_rows@entry=0x7f687cf0ee18) at /tmp/mariadb-10.0.11/sql/filesort.cc:295 #20 0x00000000005f75fe in create_sort_index (thd=0x7f685f213070, join=join@entry=0x7f685f487560, order=order@entry=0x7f685f132030, filesort_limit=filesort_limit@entry=18446744073709551615, select_limit=select_limit@entry=1, is_order_by=) at /tmp/mariadb-10.0.11/sql/sql_select.cc:20557 #21 0x000000000060b282 in JOIN::exec_inner (this=this@entry=0x7f685f487560) at /tmp/mariadb-10.0.11/sql/sql_select.cc:3045 #22 0x000000000060b9f3 in JOIN::exec (this=this@entry=0x7f685f487560) at /tmp/mariadb-10.0.11/sql/sql_select.cc:2365 #23 0x00000000006084b6 in mysql_select (thd=thd@entry=0x7f685f213070, rref_pointer_array=rref_pointer_array@entry=0x7f685f2176d8, tables=0x7f685f130538, wild_num=0, fields=..., conds=0x7f685f487288, og_num=1, order=0x7f685f132030, group=0x0, having=0x0, proc_param=0x0, select_options=select_options@entry=2147748608, result=result@entry=0x7f685f487540, unit=unit@entry=0x7f685f216d78, select_lex=select_lex@entry=0x7f685f217460) at /tmp/mariadb-10.0.11/sql/sql_select.cc:3303 #24 0x00000000006086cb in handle_select (thd=thd@entry=0x7f685f213070, lex=lex@entry=0x7f685f216cb0, result=result@entry=0x7f685f487540, setup_tables_done_option=setup_tables_done_option@entry=0) at /tmp/mariadb-10.0.11/sql/sql_select.cc:372 #25 0x00000000005a798e in execute_sqlcom_select (thd=thd@entry=0x7f685f213070, all_tables=) at /tmp/mariadb-10.0.11/sql/sql_parse.cc:5263 #26 0x00000000005ae066 in mysql_execute_command (thd=thd@entry=0x7f685f213070) at /tmp/mariadb-10.0.11/sql/sql_parse.cc:2554 #27 0x00000000005b6da6 in mysql_parse (thd=thd@entry=0x7f685f213070, rawbuf=, length=212, parser_state=parser_state@entry=0x7f687cf105c0) at /tmp/mariadb-10.0.11/sql/sql_parse.cc:6409 #28 0x00000000005b81ae in dispatch_command (command=command@entry=COM_QUERY, thd=thd@entry=0x7f685f213070, packet=packet@entry=0x7f685f219071 "SELECT `db`.`version`, `db`.`nodeID` FROM `version_history` AS `v` INNER JOIN `db_history` AS `db` ON `db`.`nodeID` = `v`.`linkid` WHERE `latch` = 'breadth_first' AND `origid` = '1' ORDER BY `weight` "..., packet_length=packet_length@entry=212) at /tmp/mariadb-10.0.11/sql/sql_parse.cc:1309 #29 0x00000000005b9ef5 in do_command (thd=0x7f685f213070) at /tmp/mariadb-10.0.11/sql/sql_parse.cc:1006 #30 0x000000000068f86d in do_handle_one_connection (thd_arg=thd_arg@entry=0x7f685f213070) at /tmp/mariadb-10.0.11/sql/sql_connect.cc:1379 #31 0x000000000068f94d in handle_one_connection (arg=arg@entry=0x7f685f213070) at /tmp/mariadb-10.0.11/sql/sql_connect.cc:1293 #32 0x00000000008d43da in pfs_spawn_thread (arg=0x7f685f7e8af0) at /tmp/mariadb-10.0.11/storage/perfschema/pfs.cc:1860 #33 0x00007f687cc880d2 in start_thread () from /lib64/libpthread.so.0 #34 0x00007f687b510f6d in clone () from /lib64/libc.so.6