Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-32331

Server crashes at json_string_set_cs

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Details

    • Bug
    • Status: Stalled (View Workflow)
    • Critical
    • 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), 11.1(EOL), 11.2(EOL), 11.7(EOL)
    • 10.11, 11.4, 11.8, 12.3
    • JSON
    • None
    • Ubuntu 20.04 x86-64, docker image mariadb:11.1.2
    • Q3/2026 Server Maintenance

    Description

      PoC:

      SELECT ( WITH x ( x ) AS ( WITH x ( x ) AS ( SELECT json_array_append ( 'x' , ( 'x' % 'x' ) , 1 , 'x' , 1 ) ) SELECT CASE WHEN x * x THEN x END FROM x ) ( SELECT 1 FROM x WHERE x ) ) ;
      

      docker log:

      mariadbd(my_print_stacktrace+0x32)[0x563066b2c7c2]
      mariadbd(handle_fatal_signal+0x488)[0x563066605cf8]
      /lib/x86_64-linux-gnu/libc.so.6(+0x42520)[0x7f4a0d2ba520]
      mariadbd(json_string_set_cs+0xf)[0x563066b9272f]
      mariadbd(json_find_path+0x3a)[0x563066b93dca]
      mariadbd(_ZN27Item_func_json_array_append7val_strEP6String+0x22d)[0x56306651ba3d]
      mariadbd(_ZN13Item_str_func8val_realEv+0x6b)[0x5630666ae4eb]
      mariadbd(_ZN13Item_func_mul7real_opEv+0x38)[0x56306667ba08]
      mariadbd(_ZNK28Type_handler_temporal_result13Item_val_boolEP4Item+0x14)[0x563066548374]
      mariadbd(_ZN23Item_func_case_searched9find_itemEv+0x4a)[0x56306664255a]
      mariadbd(_ZN14Item_func_case6str_opEP6String+0x1a)[0x56306663fafa]
      mariadbd(_ZN27Item_func_hybrid_field_type23val_decimal_from_str_opEP10my_decimal+0x25)[0x56306667f115]
      mariadbd(_ZN18Item_cache_decimal11val_decimalEP10my_decimal+0x5c)[0x563066621adc]
      mariadbd(_ZN4VDecC2EP4Item+0x2f)[0x5630665549bf]
      mariadbd(_ZN14Arg_comparator15compare_decimalEv+0x27)[0x5630666446d7]
      mariadbd(_ZN12Item_func_ne7val_intEv+0x34)[0x56306664c884]
      mariadbd(_ZNK23Type_handler_int_result13Item_val_boolEP4Item+0x14)[0x5630665483a4]
      mariadbd(_ZN15Item_bool_func215remove_eq_condsEP3THDPN4Item11cond_resultEb+0x79)[0x5630663c9f39]
      mariadbd(+0x870e91)[0x5630663d0e91]
      mariadbd(_ZN4JOIN14optimize_innerEv+0x8bb)[0x563066411d7b]
      mariadbd(_ZN4JOIN8optimizeEv+0xda)[0x563066412e2a]
      mariadbd(+0x7ec60c)[0x56306634c60c]
      mariadbd(_Z27mysql_handle_single_derivedP3LEXP10TABLE_LISTj+0x95)[0x56306634be35]
      mariadbd(_ZN4JOIN14optimize_innerEv+0xb27)[0x563066411fe7]
      mariadbd(_ZN4JOIN8optimizeEv+0xda)[0x563066412e2a]
      mariadbd(_ZN13st_select_lex31optimize_unflattened_subqueriesEb+0x115)[0x56306636ca55]
      mariadbd(_ZN4JOIN28optimize_constant_subqueriesEv+0x35)[0x56306650bd55]
      mariadbd(_ZN4JOIN14optimize_innerEv+0x503)[0x5630664119c3]
      mariadbd(_ZN4JOIN8optimizeEv+0xda)[0x563066412e2a]
      mariadbd(_Z12mysql_selectP3THDP10TABLE_LISTR4ListI4ItemEPS4_jP8st_orderS9_S7_S9_yP13select_resultP18st_select_lex_unitP13st_select_lex+0xd1)[0x563066412f21]
      mariadbd(_Z13handle_selectP3THDP3LEXP13select_resulty+0x154)[0x563066413774]
      mariadbd(+0x826f55)[0x563066386f55]
      mariadbd(_Z21mysql_execute_commandP3THDb+0x419e)[0x563066395f0e]
      mariadbd(_Z11mysql_parseP3THDPcjP12Parser_state+0x1e7)[0x563066397237]
      mariadbd(_Z16dispatch_command19enum_server_commandP3THDPcjb+0x14bd)[0x563066399a1d]
      mariadbd(_Z10do_commandP3THDb+0x138)[0x56306639b818]
      mariadbd(_Z24do_handle_one_connectionP7CONNECTb+0x3bf)[0x5630664c33af]
      mariadbd(handle_one_connection+0x5d)[0x5630664c36fd]
      mariadbd(+0xcd1906)[0x563066831906]
      /lib/x86_64-linux-gnu/libc.so.6(+0x94b43)[0x7f4a0d30cb43]
      /lib/x86_64-linux-gnu/libc.so.6(clone+0x44)[0x7f4a0d39dbb4]
       
      Trying to get some variables.
      Some pointers may be invalid and cause the dump to abort.
      Query (0x7f49ac0130d8): SELECT ( WITH x ( x ) AS ( WITH x ( x ) AS ( SELECT json_array_append ( 'x' , ( 'x' % 'x' ) , 1 , 'x' , 1 ) ) SELECT CASE WHEN x * x THEN x END FROM x ) ( SELECT 1 FROM x WHERE x ) )
       
      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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              serg Sergei Golubchik
              fuboat Jingzhou Fu
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              Dates

                Created:
                Updated:

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