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RegisterShmemCallbacks() left the backend in a bad state, if an error occurred in the callbacks or if an allocation failed. Firstly, 'shmem_request_state' was left in wrong state, causing a subsequent call to RegisterShmemCallbacks() to wrongly take the postmaster startup codepath or assertion failures in some other functions. Secondly, the 'pending_shmem_requests' list was not properly cleaned up, causing a subsequent RegisterShmemCallbacks() to try to process the stale, already-freed requests. To fix, add a PG_TRY() block to clean those things up on error. Author: Ayush Tiwari <ayushtiwari.slg01@gmail.com> Reviewed-by: Ashutosh Bapat <ashutosh.bapat.oss@gmail.com> Discussion: https://www.postgresql.org/message-id/CAJTYsWVRRWH48=PcuAo_2Y4Ap6M0QRmzxgUfFkNRtdWK74LjBQ@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/.