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  1. MariaDB Server
  2. MDEV-28082

Crash when using HAVING with IS NULL predicate in an equality

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    Details

    • Type: Bug
    • Status: Closed (View Workflow)
    • Priority: Blocker
    • Resolution: Duplicate
    • Affects Version/s: 10.4, 10.5, 10.6, 10.7, 10.8, 10.9.0
    • Fix Version/s: 10.4.25, 10.5.16, 10.6.8, 10.7.4
    • Component/s: Optimizer
    • Labels:
      None
    • Environment:
      Linux jie-2 5.4.143-1-pve #1 SMP PVE 5.4.143-1 (Tue, 28 Sep 2021 09:10:37 +0200) x86_64 x86_64 x86_64 GNU/Linux

      Description

      PoC:

      CREATE TABLE v0 ( v4 INT , v3 CHAR ( 127 ) NOT NULL , v2 INT , v1 INT NOT NULL ) ;
      SELECT * FROM v0 GROUP BY TRUE HAVING v4 = (v1 IS NULL) ;
      

      report:

      Thread pointer: 0x7fc308000c58                                                                                                                                                               
      Attempting backtrace. You can use the following information to find out                                                                                                                      
      where mysqld died. If you see no messages after this, something went                                                                                                                         
      terribly wrong...                                                                                                                                                                            
      stack_bottom = 0x7fc3ac1fce30 thread_stack 0x49000                                                                                                                                           
      mysys/stacktrace.c:212(my_print_stacktrace)[0xe12bae]                                                                                                                                        
      sql/signal_handler.cc:226(handle_fatal_signal)[0x973f04]                                                                                                                                     
      sigaction.c:0(__restore_rt)[0x7fc3c4abc3c0]                                                                                                                                                  
      sql/item_cmpfunc.h:2728(Item_func_isnull::arg_is_datetime_notnull_field())[0x9bfdb3]                                                                                                         
      sql/item.h:5311(Used_tables_and_const_cache::used_tables_and_const_cache_join(Item const*))[0x68a080]                                                                                        
      ??:0(eliminate_item_equal(THD*, Item*, COND_EQUAL*, Item_equal*))[0x7ad9f9]                                                                                                                  
      sql/sql_select.cc:16391(substitute_for_best_equal_field(THD*, st_join_table*, Item*, COND_EQUAL*, void*, bool))[0x796ebf]                                                                    
      sql/sql_select.cc:2612(JOIN::optimize_stage2())[0x78b60f]                                                                                                                                    
      sql/sql_select.cc:2492(JOIN::optimize_inner())[0x7922a2]                                                                                                                                     
      ??:0(JOIN::optimize())[0x78af00]                                                                                                                                                             
      sql/sql_select.cc:4993(mysql_select(THD*, TABLE_LIST*, List<Item>&, Item*, unsigned int, st_order*, st_order*, Item*, st_order*, unsigned long long, select_result*, st_select_lex_unit*, st_
      select_lex*))[0x785468]                                                                                                                                                                      
      sql/sql_select.cc:543(handle_select(THD*, LEX*, select_result*, unsigned long))[0x785330]                                                                                                    
      sql/sql_parse.cc:6252(execute_sqlcom_select(THD*, TABLE_LIST*))[0x754fea]                                                                                                                    
      ??:0(mysql_execute_command(THD*, bool))[0x74ef77]                                                                                                                                            
      sql/sql_class.h:2734(THD::enter_stage(PSI_stage_info_v1 const*, char const*, char const*, unsigned int))[0x74b207]                                                                           
      sql/sql_parse.cc:1896(dispatch_command(enum_server_command, THD*, char*, unsigned int, bool))[0x7490c7]                                                                                      
      sql/sql_parse.cc:1404(do_command(THD*, bool))[0x74b65e]                                                                                                                                      
      sql/sql_connect.cc:1418(do_handle_one_connection(CONNECT*, bool))[0x85bf2e]
      sql/sql_connect.cc:1318(handle_one_connection)[0x85bd4d]
      perfschema/pfs.cc:2203(pfs_spawn_thread)[0xb8496e]
      nptl/pthread_create.c:478(start_thread)[0x7fc3c4ab0609]
      ??:0(clone)[0x7fc3c47d0163]
       
      Trying to get some variables.
      Some pointers may be invalid and cause the dump to abort.
      Query (0x7fc308010b40): SELECT * FROM v0 GROUP BY TRUE HAVING v4 = (v1 IS NULL)
      

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              Assignee:
              igor Igor Babaev
              Reporter:
              fuboat Jingzhou Fu
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                Dates

                Created:
                Updated:
                Resolved:

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