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8d48e84c56
check_createrole_self_grant and check_synchronized_standby_slots were allocating memory on a LOG elevel without checking if the allocation succeeded or not, which would have led to a segfault on allocation failure. On top of that, a number of callsites were using the ERROR level, relying on erroring out rather than returning false to allow the GUC machinery handle it gracefully. Other callsites used WARNING instead of LOG. While neither being not wrong, this changes all check_ functions do it consistently with LOG. init_custom_variable gets a promoted elevel to FATAL to keep the guc_malloc error handling in line with the rest of the error handling in that function which already call FATAL. If we encounter an OOM in this callsite there is no graceful handling to be had, better to error out hard. Backpatch the fix to check_createrole_self_grant down to v16 and the fix to check_synchronized_standby_slots down to v17 where they were introduced. Author: Daniel Gustafsson <daniel@yesql.se> Reported-by: Nikita <pm91.arapov@gmail.com> Reviewed-by: Tom Lane <tgl@sss.pgh.pa.us> Bug: #18845 Discussion: https://postgr.es/m/18845-582c6e10247377ec@postgresql.org Backpatch-through: 16 |
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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. PostgreSQL has many language interfaces, many of which are listed here: https://www.postgresql.org/download/ See the file INSTALL for instructions on how to build and install PostgreSQL. That file also lists supported operating systems and hardware platforms and contains information regarding any other software packages that are required to build or run the PostgreSQL system. Copyright and license information can be found in the file COPYRIGHT. A comprehensive documentation set is included in this distribution; it can be read as described in the installation instructions. The latest version of this software may be obtained at https://www.postgresql.org/download/. For more information look at our web site located at https://www.postgresql.org/.