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  1. MariaDB Server
  2. MDEV-26392

Crash with json_get_path_next and 10.5.12

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    Description

      The table is created like:

       CREATE TABLE `test`.`arrNestTest` (
          id VARCHAR(80) AS (JSON_COMPACT(JSON_EXTRACT(doc, "$._id"))) UNIQUE KEY,
          doc JSON, 
          CONSTRAINT id_not_null CHECK(id IS NOT NULL));
      

      Stacktrace:

      bin/mariadbd(json_get_path_next+0x45)[0x55ba30fb8a25]
      bin/mariadbd(_ZN22Item_func_json_extract9read_jsonEP6StringP16json_value_typesPPcPi+0x492)[0x55ba30ab7cd2]
      bin/mariadbd(_ZN22Item_func_json_extract7val_strEP6String+0x19)[0x55ba30ab7da9]
      bin/mariadbd(_ZN21Item_func_json_format7val_strEP6String+0x3b)[0x55ba30ab6e4b]
      bin/mariadbd(_ZN4Item17save_str_in_fieldEP5Fieldb+0x61)[0x55ba3094b5d1]
      bin/mariadbd(_ZN4Item13save_in_fieldEP5Fieldb+0x36)[0x55ba3093cb16]
      bin/mariadbd(_ZN5TABLE21update_virtual_fieldsEP7handler21enum_vcol_update_mode+0x327)[0x55ba307de067]
      bin/mariadbd(_Z11fill_recordP3THDP5TABLER4ListI4ItemES6_bb+0x346)[0x55ba306b5526]
      bin/mariadbd(_Z36fill_record_n_invoke_before_triggersP3THDP5TABLER4ListI4ItemES6_b14trg_event_type+0x39)[0x55ba306b5769]
      bin/mariadbd(_Z12mysql_insertP3THDP10TABLE_LISTR4ListI4ItemERS3_IS5_ES6_S6_15enum_duplicatesbP13select_result+0x17f4)[0x55ba306e94c4]
      bin/mariadbd(_Z21mysql_execute_commandP3THD+0x2a70)[0x55ba3071fff0]
      bin/mariadbd(_ZN13sp_instr_stmt9exec_coreEP3THDPj+0x15)[0x55ba30675545]
      bin/mariadbd(_ZN13sp_lex_keeper23reset_lex_and_exec_coreEP3THDPjbP8sp_instr+0x164)[0x55ba3067dbc4]
      bin/mariadbd(_ZN13sp_instr_stmt7executeEP3THDPj+0x5b3)[0x55ba3067e5b3]
      bin/mariadbd(_ZN7sp_head7executeEP3THDb+0xad4)[0x55ba306795a4]
      bin/mariadbd(_ZN7sp_head17execute_procedureEP3THDP4ListI4ItemE+0x7ef)[0x55ba3067ab2f]
      bin/mariadbd(+0x78c7aa)[0x55ba307127aa]
      bin/mariadbd(_Z21mysql_execute_commandP3THD+0x11a7)[0x55ba3071e727]
      bin/mariadbd(_Z11mysql_parseP3THDPcjP12Parser_statebb+0x21c)[0x55ba30722e3c]
      bin/mariadbd(_Z16dispatch_command19enum_server_commandP3THDPcjbb+0x199a)[0x55ba3072583a]
      bin/mariadbd(_Z10do_commandP3THD+0xff)[0x55ba30726b5f]
      bin/mariadbd(_Z24do_handle_one_connectionP7CONNECTb+0x1b2)[0x55ba308125a2]
      bin/mariadbd(handle_one_connection+0x34)[0x55ba30812874]
      bin/mariadbd(+0xc1731d)[0x55ba30b9d31d]
      nptl/pthread_create.c:463(start_thread)[0x7f73ffbc66db]
      x86_64/clone.S:97(clone)[0x7f73fefc471f]
      

      Full crash output:

      210817 22:13:10 [ERROR] mysqld got signal 11 ;
      This could be because you hit a bug. It is also possible that this binary
      or one of the libraries it was linked against is corrupt, improperly built,
      or misconfigured. This error can also be caused by malfunctioning hardware.
       
      To report this bug, see https://mariadb.com/kb/en/reporting-bugs
       
      We will try our best to scrape up some info that will hopefully help
      diagnose the problem, but since we have already crashed, 
      something is definitely wrong and this may fail.
       
      Server version: 10.5.12-MariaDB
      key_buffer_size=16777216
      read_buffer_size=131072
      max_used_connections=2
      max_threads=153
      thread_count=2
      It is possible that mysqld could use up to 
      key_buffer_size + (read_buffer_size + sort_buffer_size)*max_threads = 353183 K  bytes of memory
      Hope that's ok; if not, decrease some variables in the equation.
       
      Thread pointer: 0x7f7370000c18
      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 = 0x7f73fc264db0 thread_stack 0x30000
      addr2line: 'bin/mariadbd': No such file
      bin/mariadbd(my_print_stacktrace+0x2e)[0x55ba30f5787e]
      Printing to addr2line failed
      bin/mariadbd(handle_fatal_signal+0x307)[0x55ba309246f7]
      ??:0(__restore_rt)[0x7f73ffbd1980]
      addr2line: 'bin/mariadbd': No such file
      bin/mariadbd(json_get_path_next+0x45)[0x55ba30fb8a25]
      bin/mariadbd(_ZN22Item_func_json_extract9read_jsonEP6StringP16json_value_typesPPcPi+0x492)[0x55ba30ab7cd2]
      bin/mariadbd(_ZN22Item_func_json_extract7val_strEP6String+0x19)[0x55ba30ab7da9]
      bin/mariadbd(_ZN21Item_func_json_format7val_strEP6String+0x3b)[0x55ba30ab6e4b]
      bin/mariadbd(_ZN4Item17save_str_in_fieldEP5Fieldb+0x61)[0x55ba3094b5d1]
      bin/mariadbd(_ZN4Item13save_in_fieldEP5Fieldb+0x36)[0x55ba3093cb16]
      bin/mariadbd(_ZN5TABLE21update_virtual_fieldsEP7handler21enum_vcol_update_mode+0x327)[0x55ba307de067]
      bin/mariadbd(_Z11fill_recordP3THDP5TABLER4ListI4ItemES6_bb+0x346)[0x55ba306b5526]
      bin/mariadbd(_Z36fill_record_n_invoke_before_triggersP3THDP5TABLER4ListI4ItemES6_b14trg_event_type+0x39)[0x55ba306b5769]
      bin/mariadbd(_Z12mysql_insertP3THDP10TABLE_LISTR4ListI4ItemERS3_IS5_ES6_S6_15enum_duplicatesbP13select_result+0x17f4)[0x55ba306e94c4]
      bin/mariadbd(_Z21mysql_execute_commandP3THD+0x2a70)[0x55ba3071fff0]
      bin/mariadbd(_ZN13sp_instr_stmt9exec_coreEP3THDPj+0x15)[0x55ba30675545]
      bin/mariadbd(_ZN13sp_lex_keeper23reset_lex_and_exec_coreEP3THDPjbP8sp_instr+0x164)[0x55ba3067dbc4]
      bin/mariadbd(_ZN13sp_instr_stmt7executeEP3THDPj+0x5b3)[0x55ba3067e5b3]
      bin/mariadbd(_ZN7sp_head7executeEP3THDb+0xad4)[0x55ba306795a4]
      bin/mariadbd(_ZN7sp_head17execute_procedureEP3THDP4ListI4ItemE+0x7ef)[0x55ba3067ab2f]
      bin/mariadbd(+0x78c7aa)[0x55ba307127aa]
      bin/mariadbd(_Z21mysql_execute_commandP3THD+0x11a7)[0x55ba3071e727]
      bin/mariadbd(_Z11mysql_parseP3THDPcjP12Parser_statebb+0x21c)[0x55ba30722e3c]
      bin/mariadbd(_Z16dispatch_command19enum_server_commandP3THDPcjbb+0x199a)[0x55ba3072583a]
      bin/mariadbd(_Z10do_commandP3THD+0xff)[0x55ba30726b5f]
      bin/mariadbd(_Z24do_handle_one_connectionP7CONNECTb+0x1b2)[0x55ba308125a2]
      bin/mariadbd(handle_one_connection+0x34)[0x55ba30812874]
      bin/mariadbd(+0xc1731d)[0x55ba30b9d31d]
      nptl/pthread_create.c:463(start_thread)[0x7f73ffbc66db]
      x86_64/clone.S:97(clone)[0x7f73fefc471f]
       
      Trying to get some variables.
      Some pointers may be invalid and cause the dump to abort.
      Query (0x7f737110ef20): INSERT INTO `test`.`arrNestTest` (doc) VALUES ('{ "_id" : { "$oid" : "611c0a463b150154132f6636" }, "a" : [ { "a" : [ { "a" : [ { "a" : [ { "a" : [ { "a" : [ { "a" : [ { "a" : [ { "a" : [ { "a" : [ { "a" : [ { "a" : [ { "a" : [ { "a" : [ { "a" : [ { "a" : 1.0 } ] } ] } ] } ] } ] } ] } ] } ] } ] } ] } ] } ] } ] } ] } ] }')
       
      Connection ID (thread ID): 585
      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 /var/lib/mysql
      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        0                    unlimited            bytes     
      Max resident set          unlimited            unlimited            bytes     
      Max processes             158854               158854               processes 
      Max open files            32190                32190                files     
      Max locked memory         67108864             67108864             bytes     
      Max address space         unlimited            unlimited            bytes     
      Max file locks            unlimited            unlimited            locks     
      Max pending signals       158854               158854               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: |/usr/share/apport/apport %p %s %c %d %P %E
      

      Executing the reported statement manually does not result in a crash but in a syntax error.

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              rucha174 Rucha Deodhar
              johan.wikman Johan Wikman
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                Updated:
                Resolved:

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