Uploaded image for project: 'MariaDB Server'
  1. MariaDB Server
  2. MDEV-32326

exec_recursive? Server crashes at st_select_lex_unit::exec_recursive

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Details

    • Bug
    • Status: Confirmed (View Workflow)
    • Critical
    • Resolution: Unresolved
    • 11.2.1, 10.6, 10.11, 11.4, 11.8, 10.4(EOL), 10.5(EOL), 11.0(EOL), 11.7(EOL), 12.1
    • 10.6, 10.11, 11.4, 11.8, 12.1
    • Optimizer, Optimizer - CTE
    • None
    • Ubuntu 20.04 x86-64, docker image mariadb:11.1.2

    Description

      PoC:

      SELECT ( WITH RECURSIVE x ( x ) AS ( SELECT 1 UNION SELECT ( 1 , 1 , 1 ) > ( 1 , ( WITH x AS ( WITH x AS ( SELECT * FROM x ) SELECT ( 1 ) x ) SELECT x FROM x ) , 1 ) ) SELECT x FROM x ) ;
      

      docker log:

      mariadbd(my_print_stacktrace+0x32)[0x5561634ed7c2]
      mariadbd(handle_fatal_signal+0x488)[0x556162fc6cf8]
      /lib/x86_64-linux-gnu/libc.so.6(+0x42520)[0x7fba12836520]
      mariadbd(_ZN18st_select_lex_unit14exec_recursiveEv+0x397)[0x556162e28a97]
      mariadbd(_ZN10TABLE_LIST14fill_recursiveEP3THD+0xa2)[0x556162d0cfc2]
      mariadbd(+0x7ec44f)[0x556162d0d44f]
      mariadbd(_Z27mysql_handle_single_derivedP3LEXP10TABLE_LISTj+0x95)[0x556162d0ce35]
      mariadbd(_ZN13st_join_table12preread_initEv+0x80)[0x556162da1710]
      mariadbd(_Z10sub_selectP4JOINP13st_join_tableb+0x1a8)[0x556162da1978]
      mariadbd(_ZN4JOIN10exec_innerEv+0xfd4)[0x556162dd5bc4]
      mariadbd(_ZN4JOIN4execEv+0x3f)[0x556162dd5fff]
      mariadbd(_ZN30subselect_single_select_engine4execEv+0x146)[0x5561630a67f6]
      mariadbd(_ZN14Item_subselect4execEv+0x4c)[0x5561630a573c]
      mariadbd(_ZN24Item_singlerow_subselect7val_intEv+0x24)[0x5561630a7784]
      mariadbd(_ZNK12Type_handler14Item_send_longEP4ItemP8ProtocolP8st_value+0x1d)[0x556162f1d89d]
      mariadbd(_ZN8Protocol19send_result_set_rowEP4ListI4ItemE+0xea)[0x556162c7bcfa]
      mariadbd(_ZN11select_send9send_dataER4ListI4ItemE+0x37)[0x556162cfa6a7]
      mariadbd(_ZN4JOIN10exec_innerEv+0xc90)[0x556162dd5880]
      mariadbd(_ZN4JOIN4execEv+0x3f)[0x556162dd5fff]
      mariadbd(_Z12mysql_selectP3THDP10TABLE_LISTR4ListI4ItemEPS4_jP8st_orderS9_S7_S9_yP13select_resultP18st_select_lex_unitP13st_select_lex+0x12c)[0x556162dd3f7c]
      mariadbd(_Z13handle_selectP3THDP3LEXP13select_resulty+0x154)[0x556162dd4774]
      mariadbd(+0x826f55)[0x556162d47f55]
      mariadbd(_Z21mysql_execute_commandP3THDb+0x419e)[0x556162d56f0e]
      mariadbd(_Z11mysql_parseP3THDPcjP12Parser_state+0x1e7)[0x556162d58237]
      mariadbd(_Z16dispatch_command19enum_server_commandP3THDPcjb+0x14bd)[0x556162d5aa1d]
      mariadbd(_Z10do_commandP3THDb+0x138)[0x556162d5c818]
      mariadbd(_Z24do_handle_one_connectionP7CONNECTb+0x3bf)[0x556162e843af]
      mariadbd(handle_one_connection+0x5d)[0x556162e846fd]
      mariadbd(+0xcd1906)[0x5561631f2906]
      /lib/x86_64-linux-gnu/libc.so.6(+0x94b43)[0x7fba12888b43]
      /lib/x86_64-linux-gnu/libc.so.6(clone+0x44)[0x7fba12919bb4]
       
      Trying to get some variables.
      Some pointers may be invalid and cause the dump to abort.
      Query (0x7fb9b00130d8): SELECT ( WITH RECURSIVE x ( x ) AS ( SELECT 1 UNION SELECT ( 1 , 1 , 1 ) > ( 1 , ( WITH x AS ( WITH x AS ( SELECT * FROM x ) SELECT ( 1 ) x ) SELECT x FROM x ) , 1 ) ) SELECT x FROM 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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              oleg.smirnov Oleg Smirnov
              fuboat Jingzhou Fu
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                Created:
                Updated:

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