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  1. MariaDB Server
  2. MDEV-28085

MariaDB SEGV issue

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    Details

    • Type: Bug
    • Status: Confirmed (View Workflow)
    • Priority: Major
    • Resolution: Unresolved
    • Affects Version/s: 10.2, 10.3, 10.4, 10.5, 10.6, 10.7, 10.8, 10.9.0
    • Fix Version/s: 10.2, 10.3, 10.4, 10.5, 10.6, 10.7
    • Component/s: None
    • Labels:
      None
    • Environment:
      Linux jie-2 5.4.143-1-pve #1 SMP PVE 5.4.143-1 (Tue, 28 Sep 2021 09:10:37 +0200) x86_64 x86_64 x86_64 GNU/Linux

      Description

      PoC:

      START TRANSACTION WITH CONSISTENT SNAPSHOT ;
      CREATE TABLE v3 ( v5 INT ( 16 ) , v4 INT ) ENGINE = MEMORY ;
      SELECT v4 IS NULL FROM v3 WHERE '' = 98 ;
      ALTER TABLE v3 ADD ( v6 INT DEFAULT ( ( 'x' IN ( 'x' , 'x' , 'x' , CURRENT_USER , SPACE ( 'x' ) , lower ( 'x' ) ) ) + 91 ) ) ;
      LOCK TABLE v3 WRITE ;
      ALTER TABLE v3 ADD COLUMN ONE INT DEFAULT ( ( ( 'x' = RIGHT ( 'x' , 16 ) ) ) + v4 | CONVERT ( v4 , CHAR ( 23 ) ) ) ;
      

      report (compiled with ASAN):

      Thread pointer: 0x62b00015e218
      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...
      

      I am confused that there is no details in the report. There is also no core dump.

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              Assignee:
              serg Sergei Golubchik
              Reporter:
              fuboat Jingzhou Fu
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                Dates

                Created:
                Updated:

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