Amit Kapila
bdae2c20e8
drop_local_obsolete_slots() continued to dereference local_slot after calling ReplicationSlotDropAcquired(). Once the slot is dropped, its entry in the slot array can be reused by another backend, so later reads of local_slot->data could observe a different slot's name or database OID, leading to an incorrect unlock and log message. Save the slot name and database OID before performing the drop, and use the saved values for the subsequent UnlockSharedObject() call and the log message. While at it, emit the "dropped replication slot" message only when a slot was actually dropped, rather than unconditionally. Author: Xuneng Zhou <xunengzhou@gmail.com> Reviewed-by: Zhijie Hou <houzj.fnst@fujitsu.com> Reviewed-by: Amit Kapila <amit.kapila16@gmail.com> Reviewed-by: Fujii Masao <masao.fujii@gmail.com> Backpatch-through: 17, where it was introduced Discussion: https://postgr.es/m/TY4PR01MB177184FF9EE916F577E1F554194082@TY4PR01MB17718.jpnprd01.prod.outlook.com
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/devel/. In particular, information about building PostgreSQL from the source code can be found at https://www.postgresql.org/docs/devel/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/.