Server crashes in spider_udf_direct_sql_create_conn - tests in spider/oracle* suites crash the server

perl ./mtr spider/oracle.spider3_fixes

#6  0x0000008e0000008d in ?? ()

#7  0x00007ff3bed4891b in spider_udf_direct_sql_create_conn (direct_sql=0x7ff3bd948380, error_num=0x7ff3c7b2ff5c) at /data/src/10.0/storage/spider/spd_direct_sql.cc:517

#8  0x00007ff3bed48da3 in spider_udf_direct_sql_get_conn (direct_sql=0x7ff3bd948380, trx=0x7ff3bd981080, error_num=0x7ff3c7b2ff5c) at /data/src/10.0/storage/spider/spd_direct_sql.cc:690

#9  0x00007ff3bed4e819 in spider_direct_sql_body (initid=0x7ff3bd822730, args=0x7ff3bd8226f0, is_null=0x7ff3bd822761 "", error=0x7ff3bd822760 "", bg=0 '\000') at /data/src/10.0/storage/spider/spd_direct_sql.cc:1682

#10 0x00007ff3bed4f6c8 in spider_direct_sql (initid=0x7ff3bd822730, args=0x7ff3bd8226f0, is_null=0x7ff3bd822761 "", error=0x7ff3bd822760 "") at /data/src/10.0/storage/spider/spd_udf.cc:28

#11 0x00000000008a919e in udf_handler::val_int (this=0x7ff3bd8226e0, null_value=0x7ff3c7b30077 "") at /data/src/10.0/sql/sql_udf.h:109

#12 0x000000000089fe0c in Item_func_udf_int::val_int (this=0x7ff3bd822618) at /data/src/10.0/sql/item_func.cc:3817

#13 0x00000000008542f7 in Item::send (this=0x7ff3bd822618, protocol=0x7ff3bfa985f8, buffer=0x7ff3c7b30160) at /data/src/10.0/sql/item.cc:6549

#14 0x000000000059f1d8 in Protocol::send_result_set_row (this=0x7ff3bfa985f8, row_items=0x7ff3bfa9c218) at /data/src/10.0/sql/protocol.cc:912

#15 0x000000000060d779 in select_send::send_data (this=0x7ff3bd822940, items=...) at /data/src/10.0/sql/sql_class.cc:2573

#16 0x00000000006817f9 in JOIN::exec_inner (this=0x7ff3bd822960) at /data/src/10.0/sql/sql_select.cc:2459

#17 0x0000000000681216 in JOIN::exec (this=0x7ff3bd822960) at /data/src/10.0/sql/sql_select.cc:2373

#18 0x000000000068457e in mysql_select (thd=0x7ff3bfa98070, rref_pointer_array=0x7ff3bfa9c378, tables=0x0, wild_num=0, fields=..., conds=0x0, og_num=0, order=0x0, group=0x0, having=0x0, proc_param=0x0, select_options=2147486464, result=0x7ff3bd822940, unit=0x7ff3bfa9ba10, select_lex=0x7ff3bfa9c100) at /data/src/10.0/sql/sql_select.cc:3308

#19 0x000000000067a93a in handle_select (thd=0x7ff3bfa98070, lex=0x7ff3bfa9b948, result=0x7ff3bd822940, setup_tables_done_option=0) at /data/src/10.0/sql/sql_select.cc:373

#20 0x000000000064f197 in execute_sqlcom_select (thd=0x7ff3bfa98070, all_tables=0x0) at /data/src/10.0/sql/sql_parse.cc:5294

#21 0x00000000006476c2 in mysql_execute_command (thd=0x7ff3bfa98070) at /data/src/10.0/sql/sql_parse.cc:2563

#22 0x0000000000651e18 in mysql_parse (thd=0x7ff3bfa98070, rawbuf=0x7ff3bd822088 "SELECT spider_direct_sql('ALTER SESSION SET NLS_DATE_FORMAT=\\'YYYY-MM-DD HH24:MI:SS\\'', '', 'srv \"s_2_1\"')", length=106, parser_state=0x7ff3c7b31650) at /data/src/10.0/sql/sql_parse.cc:6576

#23 0x0000000000644918 in dispatch_command (command=COM_QUERY, thd=0x7ff3bfa98070, packet=0x7ff3bfa9e071 "", packet_length=106) at /data/src/10.0/sql/sql_parse.cc:1309

#24 0x0000000000643bdb in do_command (thd=0x7ff3bfa98070) at /data/src/10.0/sql/sql_parse.cc:999

#25 0x0000000000761efa in do_handle_one_connection (thd_arg=0x7ff3bfa98070) at /data/src/10.0/sql/sql_connect.cc:1378

#26 0x0000000000761c6c in handle_one_connection (arg=0x7ff3bfa98070) at /data/src/10.0/sql/sql_connect.cc:1293

#27 0x00000000009faa88 in pfs_spawn_thread (arg=0x7ff3bf9975f0) at /data/src/10.0/storage/perfschema/pfs.cc:1860

#28 0x00007ff3c78000a4 in start_thread (arg=0x7ff3c7b32700) at pthread_create.c:309

#29 0x00007ff3c59b887d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111