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  1. MariaDB Server
  2. MDEV-39895

MariaDB crash triggered by binary/string functions with GIS and JSON overlap

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Details

    • Bug
    • Status: Needs Feedback (View Workflow)
    • Major
    • Resolution: Unresolved
    • 12.3.2
    • None
    • Server
    • None
    • Linux x86_64, Docker container

    Description

      ~~~sql
      SELECT CAST( convert_tz ( '2003-10-26 02:59:59' , 'MET' , 'UTC' ) AS UNSIGNED INTEGER ) ; SELECT CAST( REPEAT ( 0 , 100 ) AS CHAR ) ; SELECT REPEAT ( 0 , 100 ) ; SELECT CAST( REPEAT ( 0 , 100 ) AS BINARY ) ; select SELECT repeat ( 0 , 10 ) ; SELECT select REPEAT ( ' ' , -100 ) ; SELECT LENGTH ( _ binary '' ) ; select cast ( concat ( repeat ( '00' , -1 ) , '1' ) as unsigned ) ; SELECT HEX ( TO_BASE64 ( REPEAT ( 0 , -1 ) ) ) ; SELECT NULL ; SELECT LENGTH ( ? ) FROM ( SELECT x FROM ( SELECT * FROM ( SELECT 1 AS x UNION SELECT 2 UNION SELECT 3 UNION SELECT 4 UNION SELECT ST_ASTEXT ( ST_SIMPLIFY ( ST_GEOMFROMTEXT ( 'LINESTRING(0 0,1 1,2 0,3 -1,4 0,5 1,6 0,7 -1,8 0,9 1,10 0)' ) , 1 ) ) ) AS x ) AS x EXCEPT SELECT x FROM ( SELECT * FROM ( WITH RECURSIVE x ( x ) AS ( SELECT 0 AS x UNION SELECT 1 AS x FROM x INTERSECT SELECT 3 + 1 FROM x ) SELECT ST_ASTEXT ( ST_SIMPLIFY ( ST_GEOMFROMTEXT ( 'POINT(a 0)' ) , 1 ) ) ) AS x ) AS x WHERE json_overlaps ( x - '$[*]' , '[2,3,4, "asd"]' ) ) AS x ;
      ~~~

        1. Expected result
          The server should either execute the query or return a normal SQL error without crashing.
        1. Actual result
          The fuzzing run observed a server crash. The deduplicated stack signature is:
          ~~~
          stack:pthread_kill|raise|abort|_fsetlocking|timer_settime|_default_morecore|free|free_root
          ~~~

      Top frames:
      ~~~
      pthread_kill
      raise
      abort
      __fsetlocking
      timer_settime
      __default_morecore
      free
      free_root
      ~~~

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            shipjain Shipra Jain
            maohaogang maohaogang
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            Dates

              Created:
              Updated:

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