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WaitLSNCleanup() was called from ProcKill(), but not from AuxiliaryProcKill(), even though xlogwait.c sizes its shared memory to include NUM_AUXILIARY_PROCS and thus accepts calls from auxiliary processes. Such a process exiting while waiting would leave its entry in the heap. Register an on_shmem_exit callback lazily before a process enters a wait-for-lsn heap instead, as suggested by Noah: that keeps the cleanup local to xlogwait.c and makes it harder to miss a caller that needs it, rather than having to remember every process-kill path. Reported-by: Noah Misch <noah@leadboat.com> Author: Xuneng Zhou <xunengzhou@gmail.com> Reviewed-by: Alexander Korotkov <aekorotkov@gmail.com> Discussion: https://postgr.es/m/20260706012642.f9.noahmisch%40microsoft.com Discussion: https://postgr.es/m/CABPTF7UtW_cAa%3DQh4RDfKiUqu3pJJE22ai9tbWJVERbeRyssLw%40mail.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/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/.