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ProcessSingleRelationByOid called RelationGetSmgr(rel), discarded the result, and then read rel->rd_smgr directly when looping over forks. Only RelationGetSmgr is authorized to read that field since a relcache invalidation resets rd_smgr to NULL. Backpatch to v19 where online checksums were introduced. Author: Mihail Nikalayeu <mihailnikalayeu@gmail.com> Reviewed-by: ChangAo Chen <cca5507@qq.com> Reviewed-by: Fujii Masao <masao.fujii@gmail.com> Discussion: https://postgr.es/m/CADzfLwXGvb4Y-mqy8T+O0f_tkXR1sTDBGzP5Z=V_qcGnZ46rWg@mail.gmail.com Backpatch-through: 19
PostgreSQL Database Management System
This directory contains the source code distribution of the PostgreSQL database management system.
PostgreSQL is an advanced object-relational database management system that supports an extended subset of the SQL standard, including transactions, foreign keys, subqueries, triggers, user-defined types and functions. This distribution also contains C language bindings.
Copyright and license information can be found in the file COPYRIGHT.
General documentation about this version of PostgreSQL can be found at https://www.postgresql.org/docs/19/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/19/installation.html.
The latest version of this software, and related software, may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.