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  1. MariaDB Server
  2. MDEV-26351

segfault - (MARIA_HA *) 0x0 in ha_maria::extra

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      Description

      I used my fuzzing tool to test Mariadb , and found a bug that can result in an abortion.

      Mariadb installation:
      1) cd mariadb-10.5.9
      2) mkdir build; cd build
      3) cmake -DWITH_ASAN=ON -DWITH_ASAN_SCOPE=ON -DCMAKE_BUILD_TYPE=Debug ../
      4) make -j8 && sudo make install

      How to Repeat:
      export ASAN_OPTIONS=detect_leaks=0
      /usr/local/mysql/bin/mysqld_safe &
      /usr/local/mysql/bin/mysql -uroot -p123456(your password)
      MariaDB> drop database if exists test_db;
      MariaDB> create database test_db;
      MariaDB> use test_db;
      MariaDB> source fuzz.sql;

      I have simplified the content of fuzz.sql, and I hope fuzz.sql can help you reproduce the bug and fix it. In addition, I attach the failure report (which has its stack trace).

      This bug looks similar to MDEV-25787, but their stack trace are totally different in my report. I hope you can judge whether they are different bugs.

        Attachments

        1. fuzz.sql
          91 kB
          Zuming Jiang
        2. report.txt
          72 kB
          Zuming Jiang

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              Assignee:
              serg Sergei Golubchik
              Reporter:
              Zuming Jiang Zuming Jiang
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                Dates

                Created:
                Updated:
                Resolved:

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