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  1. MariaDB Server
  2. MDEV-7267

Server crashes in Item_field::print on ANALYZE FORMAT=JSON

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    • Sprint:
      10.1.8-3, 10.1.8-4

      Description

      CREATE TABLE t1 (a INT);
      INSERT INTO t1 VALUES (1),(2);
       
      CREATE TABLE t2 (b INT);
      INSERT INTO t2 VALUES (3),(4);
       
      ANALYZE FORMAT=JSON SELECT STRAIGHT_JOIN * FROM t1, t2 WHERE b IN ( SELECT a FROM t1 );

      Stack trace from e1913ba1

      #3  <signal handler called>
      #4  0x00007fd375bc4e8e in Item_field::print (this=0x7fd369c5c198, str=0x7fd37543ec50, query_type=QT_EXPLAIN) at 10.1/sql/item.cc:6689
      #5  0x00007fd375c04b26 in Item_func::print_op (this=0x7fd369e8ba48, str=0x7fd37543ec50, query_type=QT_EXPLAIN) at 10.1/sql/item_func.cc:494
      #6  0x00007fd375be93c3 in Item_bool_func2::print (this=0x7fd369e8ba48, str=0x7fd37543ec50, query_type=QT_EXPLAIN) at 10.1/sql/item_cmpfunc.h:390
      #7  0x00007fd375ade71c in write_item (writer=0x7fd37543efd0, item=0x7fd369e8ba48) at 10.1/sql/sql_explain.cc:1065
      #8  0x00007fd375adf281 in Explain_table_access::print_explain_json (this=0x7fd369e8c620, query=0x7fd369df5088, writer=0x7fd37543efd0, is_analyze=true) at 10.1/sql/sql_explain.cc:1268
      #9  0x00007fd375add6a6 in Explain_basic_join::print_explain_json (this=0x7fd369e8c018, query=0x7fd369df5088, writer=0x7fd37543efd0, is_analyze=true) at 10.1/sql/sql_explain.cc:739
      #10 0x00007fd375add5b2 in Explain_select::print_explain_json (this=0x7fd369e8c018, query=0x7fd369df5088, writer=0x7fd37543efd0, is_analyze=true) at 10.1/sql/sql_explain.cc:720
      #11 0x00007fd375adbb28 in Explain_query::print_explain_json (this=0x7fd369df5088, output=0x7fd369e8c8d8, is_analyze=true) at 10.1/sql/sql_explain.cc:205
      #12 0x00007fd375adb885 in Explain_query::send_explain (this=0x7fd369df5088, thd=0x7fd36df26070) at 10.1/sql/sql_explain.cc:149
      #13 0x00007fd3759840fe in execute_sqlcom_select (thd=0x7fd36df26070, all_tables=0x7fd369de02f8) at 10.1/sql/sql_parse.cc:5767
      #14 0x00007fd37597a643 in mysql_execute_command (thd=0x7fd36df26070) at 10.1/sql/sql_parse.cc:2892
      #15 0x00007fd375987169 in mysql_parse (thd=0x7fd36df26070, rawbuf=0x7fd369de0088 "ANALYZE FORMAT=JSON SELECT STRAIGHT_JOIN * FROM t1, t2 WHERE b IN ( SELECT a FROM t1 )", length=86, parser_state=0x7fd3754401c0) at 10.1/sql/sql_parse.cc:7028
      #16 0x00007fd375976a5e in dispatch_command (command=COM_QUERY, thd=0x7fd36df26070, packet=0x7fd36e3fa071 "", packet_length=86) at 10.1/sql/sql_parse.cc:1460
      #17 0x00007fd37597587c in do_command (thd=0x7fd36df26070) at 10.1/sql/sql_parse.cc:1089
      #18 0x00007fd375aa40b0 in do_handle_one_connection (thd_arg=0x7fd36df26070) at 10.1/sql/sql_connect.cc:1347
      #19 0x00007fd375aa3df5 in handle_one_connection (arg=0x7fd36df26070) at 10.1/sql/sql_connect.cc:1258
      #20 0x00007fd376040e22 in pfs_spawn_thread (arg=0x7fd3728249f0) at 10.1/storage/perfschema/pfs.cc:1860
      #21 0x00007fd375076b50 in start_thread (arg=<optimized out>) at pthread_create.c:304
      #22 0x00007fd37310d20d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112

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              Assignee:
              psergey Sergei Petrunia
              Reporter:
              elenst Elena Stepanova
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                Dates

                Created:
                Updated:
                Resolved: