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  1. MariaDB Server
  2. MDEV-26434

MariaDB Server SEGV in setup_copy_fields

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    Details

    • Type: Bug
    • Status: Confirmed (View Workflow)
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 10.4, 10.5, 10.6, 10.7.0
    • Fix Version/s: 10.4, 10.5, 10.6
    • Component/s: None
    • Labels:
    • Environment:
      Linux version 5.13.0-1-MANJARO (builduser@LEGION) (gcc (GCC) 11.1.0, GNU ld (GNU Binutils) 2.36.1) #1 SMP PREEMPT Mon Jun 7 06:16:10 UTC 2021 x86_64

      Description

      step to reproduce:

      CREATE TABLE v0 ( v1 INT NULL UNIQUE CHECK ( COLLATION ( CONVERT ( INET6_NTOA ( ( TRUE & 'x' ) ) REGEXP 'x' , FLOAT ) ) = 'x' ) ) ;
       UPDATE v0 SET v1 = v1 + 0 ;
       CREATE TABLE v2 ( v3 SET ( 'x' ) NULL CHECK ( round ( 'x' , 'x' IN ( 'x' * 'x' , -1 , NULL ) ) = 8 ) ) ;
       SELECT 'x' FROM v2 GROUP BY v3 HAVING v3 = FORMAT ( SPACE ( 59688264.000000 / ( NOT DEFAULT ( v3 ) ) ) , -128 ) ;
       INSERT INTO v0 VALUES ( 83 ) ;
       DROP PROCEDURE v0 ;
      

      report (compiled with ASAN):

      Server version: 10.7.0-MariaDB
      key_buffer_size=134217728
      read_buffer_size=131072
      max_used_connections=1
      max_threads=153
      thread_count=1
      It is possible that mysqld could use up to 
      key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 467956 K  bytes of memory
      Hope that's ok; if not, decrease some variables in the equation.
       
      Thread pointer: 0x62b0000bd218
      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 = 0x7f358821a850 thread_stack 0x5fc00
      sanitizer_common/sanitizer_common_interceptors.inc:4203(__interceptor_backtrace.part.0)[0x7f35a7ac6c3e]
      mysys/stacktrace.c:213(my_print_stacktrace)[0x5635ad5f1747]
      sql/signal_handler.cc:222(handle_fatal_signal)[0x5635ac5b9120]
      sigaction.c:0(__restore_rt)[0x7f35a74b0870]
      sql/sql_select.cc:25739(setup_copy_fields(THD*, TMP_TABLE_PARAM*, Bounds_checked_array<Item*>, List<Item>&, List<Item>&, unsigned int, List<Item>&))[0x5635abf9c4c0]
      sql/sql_select.cc:3831(JOIN::make_aggr_tables_info())[0x5635abfad29c]
      sql/sql_select.cc:3263(JOIN::optimize_stage2())[0x5635abfda0ad]
      sql/sql_select.cc:2479(JOIN::optimize_inner())[0x5635abfe8d07]
      sql/sql_select.cc:1811(JOIN::optimize())[0x5635abfea7b1]
      sql/sql_select.cc:4977(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*))[0x5635abfeaa0e]
      sql/sql_select.cc:545(handle_select(THD*, LEX*, select_result*, unsigned long))[0x5635abfec655]
      sql/sql_parse.cc:6256(execute_sqlcom_select(THD*, TABLE_LIST*))[0x5635abe2fd7d]
      sql/sql_parse.cc:3946(mysql_execute_command(THD*, bool))[0x5635abe59421]
      sql/sql_parse.cc:8047(mysql_parse(THD*, char*, unsigned int, Parser_state*))[0x5635abe5e5a1]
      sql/sql_parse.cc:1898(dispatch_command(enum_server_command, THD*, char*, unsigned int, bool))[0x5635abe6460c]
      sql/sql_parse.cc:1406(do_command(THD*, bool))[0x5635abe6973d]
      sql/sql_connect.cc:1418(do_handle_one_connection(CONNECT*, bool))[0x5635ac224e57]
      sql/sql_connect.cc:1312(handle_one_connection)[0x5635ac22533d]
      perfschema/pfs.cc:2204(pfs_spawn_thread)[0x5635accb5c2c]
      pthread_create.c:0(start_thread)[0x7f35a74a6259]
      :0(__GI___clone)[0x7f35a70515e3]
       
      Trying to get some variables.
      Some pointers may be invalid and cause the dump to abort.
      Query (0x629000087238): SELECT 'x' FROM v2 GROUP BY v3 HAVING v3 = FORMAT ( SPACE ( 59688264.000000 / ( NOT DEFAULT ( v3 ) ) ) , -128 )
       
      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
       
      The manual page at https://mariadb.com/kb/en/how-to-produce-a-full-stack-trace-for-mysqld/ contains
      information that should help you find out what is causing the crash.
      Writing a core file...
      Working directory at /home/fuboat/mariadb-tmp/17
      Resource Limits:
      Limit                     Soft Limit           Hard Limit           Units     
      Max cpu time              unlimited            unlimited            seconds   
      Max file size             unlimited            unlimited            bytes     
      Max data size             unlimited            unlimited            bytes     
      Max stack size            8388608              unlimited            bytes     
      Max core file size        unlimited            unlimited            bytes     
      Max resident set          unlimited            unlimited            bytes     
      Max processes             61608                61608                processes 
      Max open files            524288               524288               files     
      Max locked memory         65536                65536                bytes     
      Max address space         unlimited            unlimited            bytes     
      Max file locks            unlimited            unlimited            locks     
      Max pending signals       61608                61608                signals   
      Max msgqueue size         819200               819200               bytes     
      Max nice priority         0                    0                    
      Max realtime priority     0                    0                    
      Max realtime timeout      unlimited            unlimited            us        
      Core pattern: core
      

      gdb bt:

      Using host libthread_db library "/usr/lib/libthread_db.so.1".
      Core was generated by `/usr/local/mysql/bin//mysqld --port 10017 --datadir=/home/fuboat/mariadb-tmp/17'.
      Program terminated with signal SIGSEGV, Segmentation fault.
      #0  0x00007f35a74ad808 in pthread_kill () from /usr/lib/libpthread.so.0
      #1  0x00005635ac5b906b in handle_fatal_signal (sig=<optimized out>) at /experiment/mariadb-server/sql/signal_handler.cc:344
      #2  <signal handler called>
      #3  0x00005635abf9c4c0 in setup_copy_fields (thd=0x62b0000bd218, param=<optimized out>, ref_pointer_array=..., res_selected_fields=..., res_all_fields=..., elements=<optimized out>, all_fields=...) at /experiment/mariadb-server/sql/sql_select.cc:25739
      #4  0x00005635abfad29c in JOIN::make_aggr_tables_info (this=0x6290000895c8) at /experiment/mariadb-server/sql/sql_select.cc:3825
      #5  0x00005635abfda0ad in JOIN::optimize_stage2 (this=<optimized out>) at /experiment/mariadb-server/sql/sql_select.cc:3263
      #6  0x00005635abfe8d07 in JOIN::optimize_inner (this=0x6290000895c8) at /experiment/mariadb-server/sql/sql_select.cc:2479
      #7  0x00005635abfea7b1 in JOIN::optimize (this=this@entry=0x6290000895c8) at /experiment/mariadb-server/sql/sql_select.cc:1809
      #8  0x00005635abfeaa0e in mysql_select (thd=0x62b0000bd218, tables=<optimized out>, fields=..., conds=0x0, og_num=1, order=0x0, group=0x629000088148, having=0x6290000889e8, proc_param=0x0, select_options=<optimized out>, result=0x629000089598, unit=0x62b0000c13c0, select_lex=0x629000087380)
          at /experiment/mariadb-server/sql/sql_select.cc:4977
      #9  0x00005635abfec655 in handle_select (thd=thd@entry=0x62b0000bd218, lex=lex@entry=0x62b0000c12f8, result=result@entry=0x629000089598, setup_tables_done_option=setup_tables_done_option@entry=0) at /experiment/mariadb-server/sql/sql_select.cc:545
      #10 0x00005635abe2fd7d in execute_sqlcom_select (thd=0x62b0000bd218, all_tables=<optimized out>) at /experiment/mariadb-server/sql/sql_parse.cc:6256
      #11 0x00005635abe59421 in mysql_execute_command (thd=0x62b0000bd218, is_called_from_prepared_stmt=<optimized out>) at /experiment/mariadb-server/sql/sql_parse.cc:3946
      #12 0x00005635abe5e5a1 in mysql_parse (thd=0x62b0000bd218, rawbuf=<optimized out>, length=<optimized out>, parser_state=<optimized out>) at /experiment/mariadb-server/sql/sql_parse.cc:8030
      #13 0x00005635abe6460c in dispatch_command (command=<optimized out>, thd=0x62b0000bd218, packet=<optimized out>, packet_length=<optimized out>, blocking=<optimized out>) at /experiment/mariadb-server/sql/sql_parse.cc:1896
      #14 0x00005635abe6973d in do_command (thd=0x62b0000bd218, blocking=blocking@entry=true) at /experiment/mariadb-server/sql/sql_parse.cc:1404
      #15 0x00005635ac224e57 in do_handle_one_connection (connect=<optimized out>, put_in_cache=<optimized out>) at /experiment/mariadb-server/sql/sql_connect.cc:1418
      #16 0x00005635ac22533d in handle_one_connection (arg=arg@entry=0x6080000023b8) at /experiment/mariadb-server/sql/sql_connect.cc:1312
      #17 0x00005635accb5c2c in pfs_spawn_thread (arg=0x617000005b98) at /experiment/mariadb-server/storage/perfschema/pfs.cc:2201
      #18 0x00007f35a74a6259 in start_thread () from /usr/lib/libpthread.so.0
      #19 0x00007f35a70515e3 in clone () from /usr/lib/libc.so.6
      

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              Assignee:
              serg Sergei Golubchik
              Reporter:
              fuboat Jingzhou Fu
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                Updated:

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