Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-32301

Derived pushdown: Server crashes at Arg_comparator::compare_row

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Details

    • Bug
    • Status: Stalled (View Workflow)
    • Major
    • Resolution: Unresolved
    • 11.1.2, 11.2.1, 10.4(EOL), 10.5(EOL), 10.6, 10.9(EOL), 10.10(EOL), 10.11, 11.0(EOL), 11.4, 11.8
    • 10.6, 10.11, 11.4, 11.8
    • None
    • None
    • Ubuntu 20.04 x86-64, docker image mariadb:11.1.2

    Description

      PoC:

      SELECT * FROM ( SELECT 1 x ) ss 
      WHERE 
        x AND x OR ( ( x , x , x ) <= ( x , x , x ) ) 
      GROUP BY
        x 
      HAVING ( ( x = 1 ) ) ;
      

      docker log:

      mariadbd(my_print_stacktrace+0x32)[0x55c51ece97c2]
      mariadbd(handle_fatal_signal+0x488)[0x55c51e7c2cf8]
      /lib/x86_64-linux-gnu/libc.so.6(+0x42520)[0x7f9aa65d4520]
      mariadbd(_ZN14Arg_comparator11compare_rowEv+0x9c)[0x55c51e7fc3dc]
      mariadbd(_ZN12Item_func_le7val_intEv+0x34)[0x55c51e7fc754]
      mariadbd(_ZNK23Type_handler_int_result13Item_val_boolEP4Item+0x14)[0x55c51e7053a4]
      mariadbd(_ZN9Item_cond10fix_fieldsEP3THDPP4Item+0x54d)[0x55c51e80d9dd]
      mariadbd(_ZN4Item19build_pushable_condEP3THDMS_FbPhES2_+0x3e5)[0x55c51e7ecbd5]
      mariadbd(_ZN4Item19build_pushable_condEP3THDMS_FbPhES2_+0x321)[0x55c51e7ecb11]
      mariadbd(_Z25pushdown_cond_for_derivedP3THDP4ItemP10TABLE_LIST+0x10f)[0x55c51e509aaf]
      mariadbd(_ZN4JOIN14optimize_innerEv+0xb06)[0x55c51e5cefc6]
      mariadbd(_ZN4JOIN8optimizeEv+0xda)[0x55c51e5cfe2a]
      mariadbd(_Z12mysql_selectP3THDP10TABLE_LISTR4ListI4ItemEPS4_jP8st_orderS9_S7_S9_yP13select_resultP18st_select_lex_unitP13st_select_lex+0xd1)[0x55c51e5cff21]
      mariadbd(_Z13handle_selectP3THDP3LEXP13select_resulty+0x154)[0x55c51e5d0774]
      mariadbd(+0x826f55)[0x55c51e543f55]
      mariadbd(_Z21mysql_execute_commandP3THDb+0x419e)[0x55c51e552f0e]
      mariadbd(_Z11mysql_parseP3THDPcjP12Parser_state+0x1e7)[0x55c51e554237]
      mariadbd(_Z16dispatch_command19enum_server_commandP3THDPcjb+0x14bd)[0x55c51e556a1d]
      mariadbd(_Z10do_commandP3THDb+0x138)[0x55c51e558818]
      mariadbd(_Z24do_handle_one_connectionP7CONNECTb+0x3bf)[0x55c51e6803af]
      mariadbd(handle_one_connection+0x5d)[0x55c51e6806fd]
      mariadbd(+0xcd1906)[0x55c51e9ee906]
      /lib/x86_64-linux-gnu/libc.so.6(+0x94b43)[0x7f9aa6626b43]
      /lib/x86_64-linux-gnu/libc.so.6(clone+0x44)[0x7f9aa66b7bb4]
       
      Trying to get some variables.
      Some pointers may be invalid and cause the dump to abort.
      Query (0x7f9a500130d8): SELECT * FROM ( SELECT 1 x ) ss WHERE x AND x OR ( ( x , x , x ) <= ( x , x , x ) ) GROUP BY x HAVING ( ( x = 1 ) )
       
      Connection ID (thread ID): 4
      Status: NOT_KILLED
       
      Optimizer switch: index_merge=on,index_merge_union=on,index_merge_sort_union=on,index_merge_intersection=on,index_merge_sort_intersection=off,engine_condition_pushdown=off,index_condition_pushdown=on,derived_merge=on,derived_with_keys=on,firstmatch=on,loosescan=on,materialization=on,in_to_exists=on,semijoin=on,partial_match_rowid_merge=on,partial_match_table_scan=on,subquery_cache=on,mrr=off,mrr_cost_based=off,mrr_sort_keys=off,outer_join_with_cache=on,semijoin_with_cache=on,join_cache_incremental=on,join_cache_hashed=on,join_cache_bka=on,optimize_join_buffer_size=on,table_elimination=on,extended_keys=on,exists_to_in=on,orderby_uses_equalities=on,condition_pushdown_for_derived=on,split_materialized=on,condition_pushdown_for_subquery=on,rowid_filter=on,condition_pushdown_from_having=on,not_null_range_scan=off,hash_join_cardinality=on
      

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              sanja Oleksandr Byelkin
              fuboat Jingzhou Fu
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