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mirror of https://github.com/MariaDB/server.git synced 2026-10-23 18:49:29 +03:00
Sergei Golubchik 818fb20a9b MDEV-41540 filesort assert crash on a huge sort key
sort key could go over 4GB making sort length to wrap around.
let's limit sort key length by 2GB - still ridiculously unrealistically
large but far enough from 4GB so that any additions in the code below
would still be safe.

The error is somewhat confusing, but, again, only someone who pushes
the margins to exploit memory bugs will ever see it.

Additionally min_sort_memory calculations are done as uint and
can wrap around too, allocating later over 4GB memory not constrained
by @@sort_buffer_size
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Code status:

  • Appveyor CI status ci.appveyor.com

MariaDB: The innovative open source database

MariaDB was designed as a drop-in replacement of MySQL(R) with more features, new storage engines, fewer bugs, and better performance.

MariaDB is brought to you by the MariaDB Foundation and the MariaDB Corporation. Please read the CREDITS file for details about the MariaDB Foundation, and who is developing MariaDB.

MariaDB is developed by many of the original developers of MySQL who now work for the MariaDB Corporation, the MariaDB Foundation and by many people in the community.

MySQL, which is the base of MariaDB, is a product and trademark of Oracle Corporation, Inc. For a list of developers and other contributors, see the Credits appendix. You can also run 'SHOW authors' to get a list of active contributors.

A description of the MariaDB project and a manual can be found at:

https://mariadb.org

https://mariadb.com/docs/

https://mariadb.com/docs/release-notes/community-server/about/compatibility-and-differences/mariadb-vs-mysql-features

https://mariadb.com/docs/release-notes/community-server/about/compatibility-and-differences/mariadb-vs-mysql-compatibility

https://mariadb.com/docs/release-notes

Getting the code, building it and testing it

Refer to the following guide: https://mariadb.org/get-involved/getting-started-for-developers/get-code-build-test/ which outlines how to build the source code correctly and run the MariaDB testing framework, as well as which branch to target for your contributions.

Help

More help is available from the Maria Discuss mailing list https://lists.mariadb.org/postorius/lists/discuss.lists.mariadb.org/ and MariaDB's Zulip instance, https://mariadb.zulipchat.com/

Licensing


MariaDB is specifically available only under version 2 of the GNU General Public License (GPLv2). (I.e. Without the "any later version" clause.) This is inherited from MySQL. Please see the README file in the MySQL distribution for more information.

License information can be found in the COPYING file. Third party license information can be found in the THIRDPARTY file.


Bug Reports

Bug and/or error reports regarding MariaDB should be submitted at: https://jira.mariadb.org

For reporting security vulnerabilities see: https://mariadb.org/about/security-policy/

The code for MariaDB, including all revision history, can be found at: https://github.com/MariaDB/server

Description
Сервер MariaDB - это разработанный сообществом форк сервера MySQL
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