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  1. MariaDB Server
  2. MDEV-36507

fix dbug_print_row concurrent access

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    Description

      History:

      e1e1e50bbaf has improved dbug_print_row and added DBUG_PRINT to ha_*_rows function, but had a use-after-free flaw.

      https://es-jenkins.mariadb.net/job/Source-Build-Test//26700/artifact/test-mtr.log/*view*
      main.type_temporal_mysql56_debug failed with asan

      7544fd4caeb959bdb5 fixed use-after-free, but
      1. has limitation of 4096 size string
      2. has race condition, since dbug_row_print_buf is global.

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          is caused by

          Bug - A problem which impairs or prevents the functions of the product. MDEV-35343 unexpected replace behaviour when long unique index on system versioned table

          • Major - Major loss of function.
          • Closed

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              sanja Oleksandr Byelkin
              nikitamalyavin Nikita Malyavin
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                Created:
                Updated:
                Resolved:

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