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Amit Langote 8741e48e5d Fix EPQ crash from missing partition pruning state in EState 
Commit bb3ec16e14 moved partition pruning metadata into PlannedStmt.
At executor startup this metadata is used to initialize the EState
fields es_part_prune_infos, es_part_prune_states, and
es_part_prune_results.  EvalPlanQualStart() failed to copy those
fields into the child EState, causing NULL dereference when Append
ran partition pruning during a recheck. This can occur with DELETE
or UPDATE on partitioned tables that use runtime pruning, e.g. with
generic plans.

Fix by copying all partition pruning state into the EPQ estate.

Add an isolation test that reproduces the crash with concurrent
UPDATE and DELETE on a partitioned table, where the DELETE session
hits the crash during its EPQ recheck after the UPDATE commits.

Bug: #19056
Reported-by: Fei Changhong <feichanghong@qq.com>
Diagnozed-by: Fei Changhong <feichanghong@qq.com>
Author: David Rowley <dgrowleyml@gmail.com>
Co-authored-by: Amit Langote <amitlangote09@gmail.com>
Discussion: https://postgr.es/m/19056-a677cef9b54d76a0%40postgresql.org
2025-09-19 11:38:29 +09:00
.github Add CODE_OF_CONDUCT.md, CONTRIBUTING.md, and SECURITY.md. 2024-07-02 13:03:58 -05:00
config Remove traces of support for Sun Studio compiler 2025-09-12 07:39:05 +02:00
contrib Add regression expected-files for older OpenSSL in FIPS mode. 2025-09-16 14:36:51 -04:00
doc Revert "Avoid race condition between "GRANT role" and "DROP ROLE"". 2025-09-16 13:05:53 -04:00
src Fix EPQ crash from missing partition pruning state in EState 2025-09-19 11:38:29 +09:00
.cirrus.star ci: Simplify ci-os-only handling 2025-08-14 12:09:34 -04:00
.cirrus.tasks.yml ci: Explicitly enable Meson features 2025-09-03 07:54:24 -07:00
.cirrus.yml ci: Per-repo configuration for manually trigger tasks 2025-08-14 11:54:03 -04:00
.dir-locals.el Make Emacs perl-mode indent more like perltidy. 2019-01-13 11:32:31 -08:00
.editorconfig Add script to keep .editorconfig in sync with .gitattributes 2025-02-01 10:09:45 +01:00
.git-blame-ignore-revs Add commit 7e9c216b52 to .git-blame-ignore-revs. 2025-09-13 14:55:38 -05:00
.gitattributes Fix git whitespace warning 2025-08-15 10:32:35 +02:00
.gitignore Update top-level .gitignore. 2022-12-04 15:23:00 -05:00
.mailmap Add a Git .mailmap file 2024-11-05 13:56:02 +01:00
aclocal.m4 autoconf: Move export_dynamic determination to configure 2022-12-06 18:55:28 -08:00
configure Remove traces of support for Sun Studio compiler 2025-09-12 07:39:05 +02:00
configure.ac Remove traces of support for Sun Studio compiler 2025-09-12 07:39:05 +02:00
COPYRIGHT Align organization wording in copyright statement 2025-05-16 11:20:07 -04:00
GNUmakefile.in Allow selecting the git revision to be packaged by "make dist". 2024-05-03 11:08:50 -04:00
HISTORY Canonicalize some URLs 2020-02-10 20:47:50 +01:00
Makefile Remove AIX support 2024-02-28 15:17:23 +04:00
meson.build Remove traces of support for Sun Studio compiler 2025-09-12 07:39:05 +02:00
meson_options.txt Add support for basic NUMA awareness 2025-04-07 23:08:17 +02:00
README.md Revise the style of a paragraph in README.md. 2024-03-21 10:16:41 -05:00

README.md

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/.