Stamp 12.16.
commit : 66c1983d96b66edbae1f1eb0070b447f128176e2
author : Tom Lane <[email protected]>
date : Mon, 7 Aug 2023 16:13:41 -0400
committer: Tom Lane <[email protected]>
date : Mon, 7 Aug 2023 16:13:41 -0400
M configure
M configure.in
M src/include/pg_config.h.win32
M src/interfaces/libpq/libpq.rc.in
M src/port/win32ver.rc
Last-minute updates for release notes.
commit : c79434d7fcabdf2a5b27b235c0fb85912e686087
author : Tom Lane <[email protected]>
date : Mon, 7 Aug 2023 12:50:15 -0400
committer: Tom Lane <[email protected]>
date : Mon, 7 Aug 2023 12:50:15 -0400
Security: CVE-2023-39417, CVE-2023-39418
M doc/src/sgml/release-12.sgml
Reject substituting extension schemas or owners matching ["$'\].
commit : eb044d8f0aee1ba4950b0867f6ca9328374318db
author : Noah Misch <[email protected]>
date : Mon, 7 Aug 2023 06:05:56 -0700
committer: Noah Misch <[email protected]>
date : Mon, 7 Aug 2023 06:05:56 -0700
Substituting such values in extension scripts facilitated SQL injection
when @extowner@, @extschema@, or @extschema:...@ appeared inside a
quoting construct (dollar quoting, '', or ""). No bundled extension was
vulnerable. Vulnerable uses do appear in a documentation example and in
non-bundled extensions. Hence, the attack prerequisite was an
administrator having installed files of a vulnerable, trusted,
non-bundled extension. Subject to that prerequisite, this enabled an
attacker having database-level CREATE privilege to execute arbitrary
code as the bootstrap superuser. By blocking this attack in the core
server, there's no need to modify individual extensions. Back-patch to
v11 (all supported versions).
Reported by Micah Gate, Valerie Woolard, Tim Carey-Smith, and Christoph
Berg.
Security: CVE-2023-39417
M src/backend/commands/extension.c
M src/test/modules/test_extensions/Makefile
M src/test/modules/test_extensions/expected/test_extensions.out
M src/test/modules/test_extensions/sql/test_extensions.sql
A src/test/modules/test_extensions/test_ext_extschema–1.0.sql
A src/test/modules/test_extensions/test_ext_extschema.control
Translation updates
commit : 001561235787970ce91b60469498aac898dda866
author : Peter Eisentraut <[email protected]>
date : Mon, 7 Aug 2023 12:35:56 +0200
committer: Peter Eisentraut <[email protected]>
date : Mon, 7 Aug 2023 12:35:56 +0200
Source-Git-URL: https://git.postgresql.org/git/pgtranslation/messages.git
Source-Git-Hash: 35f20e410919d90dd947e22d4ed99bb835efef0a
M src/backend/po/de.po
M src/backend/po/fr.po
M src/backend/po/ja.po
M src/backend/po/zh_CN.po
M src/bin/pg_dump/po/fr.po
Release notes for 15.4, 14.9, 13.12, 12.16, 11.21.
commit : 3b4d231c2ed5ba2095d01655296951b9b2add8ec
author : Tom Lane <[email protected]>
date : Sat, 5 Aug 2023 16:47:04 -0400
committer: Tom Lane <[email protected]>
date : Sat, 5 Aug 2023 16:47:04 -0400
M doc/src/sgml/release-12.sgml
Doc: update documentation for creating custom scan paths.
commit : 9528ae1a18555dd120345409b9257c9354652595
author : Etsuro Fujita <[email protected]>
date : Thu, 3 Aug 2023 17:45:08 +0900
committer: Etsuro Fujita <[email protected]>
date : Thu, 3 Aug 2023 17:45:08 +0900
Commit f49842d1e added a new callback for custom scan paths, but missed
updating the documentation.
Back-patch to all supported branches.
Discussion: https://postgr.es/m/CAPmGK15ODkN%2B%3DhkBCufj1HBW0x5OTb65Xuy7ryXchMdiCMpx_g%40mail.gmail.com
M doc/src/sgml/custom-scan.sgml
Update comments on CustomPath struct.
commit : 329f3a4bbab1b3f5e43076187601f9799befa3b2
author : Etsuro Fujita <[email protected]>
date : Thu, 3 Aug 2023 17:15:08 +0900
committer: Etsuro Fujita <[email protected]>
date : Thu, 3 Aug 2023 17:15:08 +0900
Commit e7cb7ee14 allowed custom scan providers to create CustomPath
paths for join relations as well, but missed updating the comments.
Back-patch to all supported branches.
Discussion: https://postgr.es/m/CAPmGK15ODkN%2B%3DhkBCufj1HBW0x5OTb65Xuy7ryXchMdiCMpx_g%40mail.gmail.com
M src/include/nodes/pathnodes.h
Fix overly strict Assert in jsonpath code
commit : 668990980f15e204abad3ed015466514483ab7ab
author : David Rowley <[email protected]>
date : Wed, 2 Aug 2023 01:44:31 +1200
committer: David Rowley <[email protected]>
date : Wed, 2 Aug 2023 01:44:31 +1200
This was failing for queries which try to get the .type() of a
jpiLikeRegex. For example:
select jsonb_path_query('["string", "string"]',
'($[0] like_regex ".{7}").type()');
Reported-by: Alexander Kozhemyakin
Bug: #18035
Discussion: https://postgr.es/m/[email protected]
Backpatch-through: 12, where SQL/JSON path was added.
M src/backend/utils/adt/jsonpath.c
Disallow replacing joins with scans in problematic cases.
commit : 9edf72aa76441716ce62d1f1787988e160da8115
author : Etsuro Fujita <[email protected]>
date : Fri, 28 Jul 2023 15:45:08 +0900
committer: Etsuro Fujita <[email protected]>
date : Fri, 28 Jul 2023 15:45:08 +0900
Commit e7cb7ee14, which introduced the infrastructure for FDWs and
custom scan providers to replace joins with scans, failed to add support
handling of pseudoconstant quals assigned to replaced joins in
createplan.c, leading to an incorrect plan without a gating Result node
when postgres_fdw replaced a join with such a qual.
To fix, we could add the support by 1) modifying the ForeignPath and
CustomPath structs to store the list of RestrictInfo nodes to apply to
the join, as in JoinPaths, if they represent foreign and custom scans
replacing a join with a scan, and by 2) modifying create_scan_plan() in
createplan.c to use that list in that case, instead of the
baserestrictinfo list, to get pseudoconstant quals assigned to the join;
but #1 would cause an ABI break. So fix by modifying the infrastructure
to just disallow replacing joins with such quals.
Back-patch to all supported branches.
Reported by Nishant Sharma. Patch by me, reviewed by Nishant Sharma and
Richard Guo.
Discussion: https://postgr.es/m/CADrsxdbcN1vejBaf8a%2BQhrZY5PXL-04mCd4GDu6qm6FigDZd6Q%40mail.gmail.com
M contrib/postgres_fdw/expected/postgres_fdw.out
M contrib/postgres_fdw/sql/postgres_fdw.sql
M src/backend/optimizer/path/joinpath.c
M src/backend/optimizer/util/restrictinfo.c
M src/include/optimizer/restrictinfo.h
Raise fixed token-length limit in hba.c.
commit : 0660f74e861d0dc942af3e0b5f88cb2f0c72aee5
author : Tom Lane <[email protected]>
date : Thu, 27 Jul 2023 12:07:48 -0400
committer: Tom Lane <[email protected]>
date : Thu, 27 Jul 2023 12:07:48 -0400
Historically, hba.c limited tokens in the authentication configuration
files (pg_hba.conf and pg_ident.conf) to less than 256 bytes. We have
seen a few reports of this limit causing problems; notably, for
moderately-complex LDAP configurations. Increase the limit to 10240
bytes as a low-risk stop-gap solution.
In v13 and earlier, this also requires raising MAX_LINE, the limit
on overall line length. I'm hesitant to make this code consume
too much stack space, so I only raised that to 20480 bytes.
Discussion: https://postgr.es/m/[email protected]
M src/backend/libpq/hba.c
Doc: improve description of IN and row-constructor comparisons.
commit : 22d0c30bd9662e48fb0d27253fec6a43c7673f13
author : Tom Lane <[email protected]>
date : Wed, 19 Jul 2023 11:00:34 -0400
committer: Tom Lane <[email protected]>
date : Wed, 19 Jul 2023 11:00:34 -0400
IN and NOT IN work fine on records and arrays, so just say that
they accept "expressions" not "scalar expressions". I think that
that phrasing was meant to say that they don't work on set-returning
expressions, but that's not the common meaning of "scalar".
Revise the description of row-constructor comparisons to make it
perhaps a bit less confusing. (This partially reverts some
dubious wording changes made by commit f56651519.)
Per gripe from Ilya Nenashev. Back-patch to supported branches.
In HEAD and v16, also drop a NOTE about pre-8.2 behavior, which
is hopefully no longer of interest to anybody.
Discussion: https://postgr.es/m/[email protected]
M doc/src/sgml/func.sgml
Doc: fix out-of-date example of SPI usage.
commit : 04911fa767fda444c1a883a6ece32a0674cffd03
author : Tom Lane <[email protected]>
date : Tue, 18 Jul 2023 11:59:39 -0400
committer: Tom Lane <[email protected]>
date : Tue, 18 Jul 2023 11:59:39 -0400
The "count" argument of SPI_exec() only limits execution when
the query is actually returning rows. This was not the case
before PG 9.0, so this example was correct when written; but
we missed updating it in commit 2ddc600f8. Extend the example
to show the behavior both with and without RETURNING.
While here, improve the commentary and markup for the rest
of the example.
David G. Johnston and Tom Lane, per report from Curt Kolovson.
Back-patch to all supported branches.
Discussion: https://postgr.es/m/CANhYJV6HWtgz_qjx_APfK0PAgLUzY-2vjLuj7i_o=TZF1LAQew@mail.gmail.com
M doc/src/sgml/spi.sgml
Fix indentation in twophase.c
commit : 410a0d6bdad283cc086fa05429cb53d178c62a99
author : Michael Paquier <[email protected]>
date : Tue, 18 Jul 2023 14:04:52 +0900
committer: Michael Paquier <[email protected]>
date : Tue, 18 Jul 2023 14:04:52 +0900
This has been missed in cb0cca1, noticed before buildfarm member koel
has been able to complain while poking at a different patch. Like the
other commit, backpatch all the way down to limit the odds of merge
conflicts.
Backpatch-through: 11
M src/backend/access/transam/twophase.c
Fix recovery of 2PC transaction during crash recovery
commit : d2ee542a2bbec269115f7b1b4eb7ea59f879dc58
author : Michael Paquier <[email protected]>
date : Tue, 18 Jul 2023 13:44:34 +0900
committer: Michael Paquier <[email protected]>
date : Tue, 18 Jul 2023 13:44:34 +0900
A crash in the middle of a checkpoint with some two-phase state data
already flushed to disk by this checkpoint could cause a follow-up crash
recovery to recover twice the same transaction, once from what has been
found in pg_twophase/ at the beginning of recovery and a second time
when replaying its corresponding record.
This would lead to FATAL failures in the startup process during
recovery, where the same transaction would have a state recovered twice
instead of once:
LOG: recovering prepared transaction 731 from shared memory
LOG: recovering prepared transaction 731 from shared memory
FATAL: lock ExclusiveLock on object 731/0/0 is already held
This issue is fixed by skipping the addition of any 2PC state coming
from a record whose equivalent 2PC state file has already been loaded in
TwoPhaseState at the beginning of recovery by restoreTwoPhaseData(),
which is OK as long as the system has not reached a consistent state.
The timing to get a messed up recovery processing is very racy, and
would very unlikely happen. The thread that has reported the issue has
demonstrated the bug using injection points to force a PANIC in the
middle of a checkpoint.
Issue introduced in 728bd99, so backpatch all the way down.
Reported-by: "suyu.cmj" <[email protected]>
Author: "suyu.cmj" <[email protected]>
Author: Michael Paquier
Discussion: https://postgr.es/m/109e6994-b971-48cb-84f6-829646f18b4c.mengjuan.cmj@alibaba-inc.com
Backpatch-through: 11
M src/backend/access/transam/twophase.c
Add indisreplident to fields refreshed by RelationReloadIndexInfo()
commit : 7d27493b74c5893fb50b82266d019964493318d9
author : Michael Paquier <[email protected]>
date : Fri, 14 Jul 2023 11:16:11 +0900
committer: Michael Paquier <[email protected]>
date : Fri, 14 Jul 2023 11:16:11 +0900
RelationReloadIndexInfo() is a fast-path used for index reloads in the
relation cache, and it has always forgotten about updating
indisreplident, which is something that would happen after an index is
selected for a replica identity. This can lead to incorrect cache
information provided when executing a command in a transaction context
that updates indisreplident.
None of the code paths currently on HEAD that need to check upon
pg_index.indisreplident fetch its value from the relation cache, always
relying on a fresh copy on the syscache. Unfortunately, this may not be
the case of out-of-core code, that could see out-of-date value.
Author: Shruthi Gowda
Reviewed-by: Robert Haas, Dilip Kumar, Michael Paquier
Discussion: https://postgr.es/m/CAASxf_PBcxax0wW-3gErUyftZ0XrCs3Lrpuhq4-Z3Fak1DoW7Q@mail.gmail.com
Backpatch-through: 11
M src/backend/utils/cache/relcache.c
Fix updates of indisvalid for partitioned indexes
commit : f1d6bcdd8fb5db1f71ea0e55ade2221c3c72c96e
author : Michael Paquier <[email protected]>
date : Fri, 14 Jul 2023 10:13:21 +0900
committer: Michael Paquier <[email protected]>
date : Fri, 14 Jul 2023 10:13:21 +0900
indisvalid is switched to true for partitioned indexes when all its
partitions have valid indexes when attaching a new partition, up to the
top-most parent if all its leaves are themselves valid when dealing with
multiple layers of partitions.
The copy of the tuple from pg_index used to switch indisvalid to true
came from the relation cache, which is incorrect. Particularly, in the
case reported by Shruthi Gowda, executing a series of commands in a
single transaction would cause the validation of partitioned indexes to
use an incorrect version of a pg_index tuple, as indexes are reloaded
after an invalidation request with RelationReloadIndexInfo(), a much
faster version than a full index cache rebuild. In this case, the
limited information updated in the cache leads to an incorrect version
of the tuple used. One of the symptoms reported was the following
error, with a replica identity update, for instance:
"ERROR: attempted to update invisible tuple"
This is incorrect since 8b08f7d, so backpatch all the way down.
Reported-by: Shruthi Gowda
Author: Michael Paquier
Reviewed-by: Shruthi Gowda, Dilip Kumar
Discussion: https://postgr.es/m/CAASxf_PBcxax0wW-3gErUyftZ0XrCs3Lrpuhq4-Z3Fak1DoW7Q@mail.gmail.com
Backpatch-through: 11
M src/backend/commands/tablecmds.c
M src/test/regress/expected/indexing.out
M src/test/regress/sql/indexing.sql
Handle DROP DATABASE getting interrupted
commit : 034a9fcd2bb8e8ac49165e983a44e8805c8a7c63
author : Andres Freund <[email protected]>
date : Thu, 13 Jul 2023 13:03:36 -0700
committer: Andres Freund <[email protected]>
date : Thu, 13 Jul 2023 13:03:36 -0700
Until now, when DROP DATABASE got interrupted in the wrong moment, the removal
of the pg_database row would also roll back, even though some irreversible
steps have already been taken. E.g. DropDatabaseBuffers() might have thrown
out dirty buffers, or files could have been unlinked. But we continued to
allow connections to such a corrupted database.
To fix this, mark databases invalid with an in-place update, just before
starting to perform irreversible steps. As we can't add a new column in the
back branches, we use pg_database.datconnlimit = -2 for this purpose.
An invalid database cannot be connected to anymore, but can still be
dropped.
Unfortunately we can't easily add output to psql's \l to indicate that some
database is invalid, it doesn't fit in any of the existing columns.
Add tests verifying that a interrupted DROP DATABASE is handled correctly in
the backend and in various tools.
Reported-by: Evgeny Morozov <[email protected]>
Author: Andres Freund <[email protected]>
Reviewed-by: Daniel Gustafsson <[email protected]>
Reviewed-by: Thomas Munro <[email protected]>
Discussion: https://postgr.es/m/[email protected]
Discussion: https://postgr.es/m/[email protected]
Backpatch: 11-, bug present in all supported versions
M doc/src/sgml/catalogs.sgml
M src/backend/commands/dbcommands.c
M src/backend/commands/vacuum.c
M src/backend/postmaster/autovacuum.c
M src/backend/utils/init/postinit.c
M src/bin/pg_dump/pg_dumpall.c
M src/bin/pg_dump/t/002_pg_dump.pl
M src/bin/scripts/clusterdb.c
M src/bin/scripts/reindexdb.c
M src/bin/scripts/t/011_clusterdb_all.pl
M src/bin/scripts/t/050_dropdb.pl
M src/bin/scripts/t/091_reindexdb_all.pl
M src/bin/scripts/t/101_vacuumdb_all.pl
M src/bin/scripts/vacuumdb.c
M src/include/catalog/pg_database.h
A src/test/recovery/t/037_invalid_database.pl
Release lock after encountering bogs row in vac_truncate_clog()
commit : 7aec84e4c2652d9928916330f612de21e40621d8
author : Andres Freund <[email protected]>
date : Thu, 13 Jul 2023 13:03:36 -0700
committer: Andres Freund <[email protected]>
date : Thu, 13 Jul 2023 13:03:36 -0700
When vac_truncate_clog() encounters bogus datfrozenxid / datminmxid values, it
returns early. Unfortunately, until now, it did not release
WrapLimitsVacuumLock. If the backend later tries to acquire
WrapLimitsVacuumLock, the session / autovacuum worker hangs in an
uncancellable way. Similarly, other sessions will hang waiting for the
lock. However, if the backend holding the lock exited or errored out for some
reason, the lock was released.
The bug was introduced as a side effect of 566372b3d643.
It is interesting that there are no production reports of this problem. That
is likely due to a mix of bugs leading to bogus values having gotten less
common, process exit releasing locks and instances of hangs being hard to
debug for "normal" users.
Discussion: https://postgr.es/m/[email protected]
M src/backend/commands/vacuum.c
Remove unnecessary pfree() in g_intbig_compress().
commit : 8d8f3714988bd0a6a894798a236ddd9e081cbeca
author : Tom Lane <[email protected]>
date : Thu, 13 Jul 2023 13:07:51 -0400
committer: Tom Lane <[email protected]>
date : Thu, 13 Jul 2023 13:07:51 -0400
GiST compress functions (like all GiST opclass functions) are
supposed to be called in short-lived memory contexts, so that
minor memory leaks in them are not of concern, and indeed
explicit pfree's are likely slightly counterproductive.
But this one in g_intbig_compress() is more than
slightly counterproductive, because it's guarded by
"if (in != DatumGetArrayTypeP(entry->key))" which means
that if this test succeeds, we've detoasted the datum twice.
(And to add insult to injury, the extra detoast result is
leaked.) Let's just drop the whole stanza, relying on the
GiST temporary context mechanism to clean up in good time.
The analogous bit in g_int_compress() is
if (r != (ArrayType *) DatumGetPointer(entry->key))
pfree(r);
which doesn't have the gratuitous-detoast problem so
I left it alone. Perhaps there is a case for removing
unnecessary pfree's more widely, but I'm not sure if it's
worth the code churn.
The potential extra decompress seems expensive enough to
justify calling this a (minor) performance bug and
back-patching.
Konstantin Knizhnik, Matthias van de Meent, Tom Lane
Discussion: https://postgr.es/m/CAEze2Wi86=DxErfvf+SCB2UKmU2amKOF60BKuJOX=w-RojRn0A@mail.gmail.com
M contrib/intarray/_intbig_gist.c
Be more rigorous about local variables in PostgresMain().
commit : 0c32818d7559ca23a8ad97e715430d2d8a19123a
author : Tom Lane <[email protected]>
date : Mon, 10 Jul 2023 12:14:34 -0400
committer: Tom Lane <[email protected]>
date : Mon, 10 Jul 2023 12:14:34 -0400
Since PostgresMain calls sigsetjmp, any local variables that are not
marked "volatile" have a risk of unspecified behavior. In practice
this means that when control returns via longjmp, such variables might
get reset to their values as of the time of sigsetjmp, depending on
whether the compiler chose to put them in registers or on the stack.
We were careful about this for "send_ready_for_query", but not the
other local variables.
In the case of the timeout_enabled flags, resetting them to
their initial "false" states is actually good, since we do
"disable_all_timeouts()" in the longjmp cleanup code path. If that
does not happen, we risk uselessly calling "disable_timeout()" later,
which is harmless but a little bit expensive. Let's explicitly reset
these flags so that the behavior is correct and platform-independent.
(This change means that we really don't need the new "volatile"
markings after all, but let's install them anyway since any change
in this logic could re-introduce a problem.)
There is no issue for "firstchar" and "input_message" because those
are explicitly reinitialized each time through the query processing
loop. To make that clearer, move them to be declared inside the loop.
That leaves us with all the function-lifespan locals except the
sigjmp_buf itself marked as volatile, which seems like a good policy
to have going forward.
Because of the possibility of extra disable_timeout() calls, this
seems worth back-patching.
Sergey Shinderuk and Tom Lane
Discussion: https://postgr.es/m/[email protected]
M src/backend/tcop/postgres.c
Fix ALTER EXTENSION SET SCHEMA with objects outside an extension's schema
commit : 02021f1b2f65fb86b7f8581f90dd8575fd39daf4
author : Michael Paquier <[email protected]>
date : Mon, 10 Jul 2023 09:40:22 +0900
committer: Michael Paquier <[email protected]>
date : Mon, 10 Jul 2023 09:40:22 +0900
As coded, the code would use as a base comparison the namespace OID from
the first object scanned in pg_depend when switching its namespace
dependency entry to the new one, and use it as a base of comparison for
any follow-up checks. It would also be used as the old namespace OID to
switch *from* for the extension's pg_depend entry. Hence, if the first
object scanned has a namespace different than the one stored in the
extension, we would finish by:
- Not checking that the extension objects map with the extension's
schema.
- Not switching the extension -> namespace dependency entry to the new
namespace provided by the user, making ALTER EXTENSION ineffective.
This issue exists since this command has been introduced in d9572c4 for
relocatable extension, so backpatch all the way down to 11. The test
case has been provided by Heikki, that I have tweaked a bit to show the
effects on pg_depend for the extension.
Reported-by: Heikki Linnakangas
Author: Michael Paquier, Heikki Linnakangas
Discussion: https://postgr.es/m/[email protected]
Backpatch-through: 11
M src/backend/commands/extension.c
Fix type of iterator variable in SH_START_ITERATE
commit : 9f236198c31de5340bd2227438b239a465c6eab3
author : Andres Freund <[email protected]>
date : Thu, 6 Jul 2023 08:34:17 -0700
committer: Andres Freund <[email protected]>
date : Thu, 6 Jul 2023 08:34:17 -0700
Also add comment to make the reasoning behind the Assert() more explicit (per
Tom).
Reported-by: Ranier Vilela
Discussion: https://postgr.es/m/CAEudQAocXNJ6s1VLz+hMamLAQAiewRoW17OJ6-+9GACKfj6iPQ@mail.gmail.com
Backpatch: 11-
M src/include/lib/simplehash.h
Skip pg_baseback long filename test if path too long on Windows
commit : 2d3983aea5db679fdd1b286ded792692580e8f3f
author : Andrew Dunstan <[email protected]>
date : Thu, 6 Jul 2023 12:27:40 -0400
committer: Andrew Dunstan <[email protected]>
date : Thu, 6 Jul 2023 12:27:40 -0400
On Windows, it's sometimes difficult to create a file with a path longer
than 255 chars, and if it can be created it might not be seen by the
archiver. This can be triggered by the test for tar backups with
filenames greater than 100 bytes. So we skip that test if the path would
exceed 255.
Backpatch to all live branches.
Reviewed by Daniel Gustafsson
Discussion: https://postgr.es/m/[email protected]
M src/bin/pg_basebackup/t/010_pg_basebackup.pl
WAL-log the creation of the init fork of unlogged indexes.
commit : 80abec3870692454c42b6b809f4b26cf72ea0736
author : Heikki Linnakangas <[email protected]>
date : Thu, 6 Jul 2023 17:25:29 +0300
committer: Heikki Linnakangas <[email protected]>
date : Thu, 6 Jul 2023 17:25:29 +0300
We create a file, so we better WAL-log it. In practice, all the
built-in index AMs and all extensions that I'm aware of write a
metapage to the init fork, which is WAL-logged, and replay of the
metapage implicitly creates the fork too. But if ambuildempty() didn't
write any page, we would miss it.
This can be seen with dummy_index_am. Set up replication, create a
'dummy_index_am' index on an unlogged table, and look at the files
created in the replica: the init fork is not created on the
replica. Dummy_index_am doesn't do anything with the relation files,
however, so it doesn't lead to any user-visible errors.
Backpatch to all supported versions.
Reviewed-by: Robert Haas
Discussion: https://www.postgresql.org/message-id/6e5bbc08-cdfc-b2b3-9e23-1a914b9850a9%40iki.fi
M src/backend/catalog/index.c
Fix leak of LLVM "fatal-on-oom" section counter.
commit : 162aa47c31a0236d68b68d65df3fef0079af0d48
author : Heikki Linnakangas <[email protected]>
date : Wed, 5 Jul 2023 13:13:13 +0300
committer: Heikki Linnakangas <[email protected]>
date : Wed, 5 Jul 2023 13:13:13 +0300
llvm_release_context() called llvm_enter_fatal_on_oom(), but was missing
the corresponding llvm_leave_fatal_on_oom() call. As a result, if JIT was
used at all, we were almost always in the "fatal-on-oom" state.
It only makes a difference if you use an extension written in C++, and
run out of memory in a C++ 'new' call. In that case, you would get a
PostgreSQL FATAL error, instead of the default behavior of throwing a
C++ exception.
Back-patch to all supported versions.
Reviewed-by: Daniel Gustafsson
Discussion: https://www.postgresql.org/message-id/[email protected]
M src/backend/jit/llvm/llvmjit.c
Ensure that creation of an empty relfile is fsync'd at checkpoint.
commit : 1b4f1c6f8a6c0b764636f25e17d37d8cab7e82be
author : Heikki Linnakangas <[email protected]>
date : Tue, 4 Jul 2023 17:57:03 +0300
committer: Heikki Linnakangas <[email protected]>
date : Tue, 4 Jul 2023 17:57:03 +0300
If you create a table and don't insert any data into it, the relation file
is never fsync'd. You don't lose data, because an empty table doesn't have
any data to begin with, but if you crash and lose the file, subsequent
operations on the table will fail with "could not open file" error.
To fix, register an fsync request in mdcreate(), like we do for mdwrite().
Per discussion, we probably should also fsync the containing directory
after creating a new file. But that's a separate and much wider issue.
Backpatch to all supported versions.
Reviewed-by: Andres Freund, Thomas Munro
Discussion: https://www.postgresql.org/message-id/d47d8122-415e-425c-d0a2-e0160829702d%40iki.fi
M src/backend/storage/smgr/md.c
Adjust kerberos and ldap tests for Homebrew on ARM
commit : 3bba0f917f8aa79cdb261b50bb29d96982911e4a
author : Peter Eisentraut <[email protected]>
date : Tue, 4 Jul 2023 11:14:53 +0200
committer: Peter Eisentraut <[email protected]>
date : Tue, 4 Jul 2023 11:14:53 +0200
The Homebrew package manager changed its default installation prefix
for the new architecture, so a couple of tests need tweaks to find
binaries.
This is a partial backpatch of dc513bc654.
M src/test/kerberos/t/001_auth.pl
M src/test/ldap/t/001_auth.pl
Re-bin segment when memory pages are freed.
commit : 74ad9b0d1e7c7ef2f1c6c2468e87469b11700359
author : Thomas Munro <[email protected]>
date : Tue, 4 Jul 2023 15:16:34 +1200
committer: Thomas Munro <[email protected]>
date : Tue, 4 Jul 2023 15:16:34 +1200
It's OK to be lazy about re-binning memory segments when allocating,
because that can only leave segments in a bin that's too high. We'll
search higher bins if necessary while allocating next time, and
also eventually re-bin, so no memory can become unreachable that way.
However, when freeing memory, the largest contiguous range of free pages
might go up, so we should re-bin eagerly to make sure we don't leave the
segment in a bin that is too low for get_best_segment() to find.
The re-binning code is moved into a function of its own, so it can be
called whenever free pages are returned to the segment's free page map.
Back-patch to all supported releases.
Author: Dongming Liu <[email protected]>
Reviewed-by: Robert Haas <[email protected]> (earlier version)
Reviewed-by: Thomas Munro <[email protected]>
Discussion: https://postgr.es/m/CAL1p7e8LzB2LSeAXo2pXCW4%2BRya9s0sJ3G_ReKOU%3DAjSUWjHWQ%40mail.gmail.com
M src/backend/utils/mmgr/dsa.c
Fix race in SSI interaction with gin fast path.
commit : 255a925d333be9a3d6314e2fe698063eb8e753a6
author : Thomas Munro <[email protected]>
date : Mon, 3 Jul 2023 16:20:01 +1200
committer: Thomas Munro <[email protected]>
date : Mon, 3 Jul 2023 16:20:01 +1200
The ginfast.c code previously checked for conflicts in before locking
the relevant buffer, leaving a window where a RW conflict could be
missed. Re-order.
There was also a place where buffer ID and block number were confused
while trying to predicate-lock a page, noted by visual inspection.
Back-patch to all supported releases. Fixes one more problem discovered
with the reproducer from bug #17949, in this case when Dmitry tried
other index types.
Reported-by: Artem Anisimov <[email protected]>
Reported-by: Dmitry Dolgov <[email protected]>
Reviewed-by: Heikki Linnakangas <[email protected]>
Discussion: https://postgr.es/m/17949-a0f17035294a55e2%40postgresql.org
M src/backend/access/gin/ginfast.c
M src/backend/access/gin/ginget.c
Fix race in SSI interaction with bitmap heap scan.
commit : 17b8887c29e55e2ac2e04a41a87714a4960484fa
author : Thomas Munro <[email protected]>
date : Mon, 3 Jul 2023 16:18:20 +1200
committer: Thomas Munro <[email protected]>
date : Mon, 3 Jul 2023 16:18:20 +1200
When performing a bitmap heap scan, we don't want to miss concurrent
writes that occurred after we observed the heap's rs_nblocks, but before
we took predicate locks on index pages. Therefore, we can't skip
fetching any heap tuples that are referenced by the index, because we
need to test them all with CheckForSerializableConflictOut(). The
old optimization that would ignore any references to blocks >=
rs_nblocks gets in the way of that requirement, because it means that
concurrent writes in that window are ignored.
Removing that optimization shouldn't affect correctness at any isolation
level, because any new tuples shouldn't be visible to an MVCC snapshot.
There also shouldn't be any error-causing references to heap blocks past
the end, because we should have held at least an AccessShareLock on the
table before the index scan. It can't get smaller while our transaction
is running. For now, though, we'll keep the optimization at lower
levels to avoid making unnecessary changes in a bug fix.
Back-patch to all supported releases. In release 11, the code is in a
different place but not fundamentally different. Fixes one aspect of
bug #17949.
Reported-by: Artem Anisimov <[email protected]>
Reviewed-by: Dmitry Dolgov <[email protected]>
Reviewed-by: Heikki Linnakangas <[email protected]>
Discussion: https://postgr.es/m/17949-a0f17035294a55e2%40postgresql.org
M src/backend/access/heap/heapam_handler.c
Fix race in SSI interaction with empty btrees.
commit : fe88497b4d0b0105aa4c3d3ba75ca988058a0381
author : Thomas Munro <[email protected]>
date : Mon, 3 Jul 2023 16:16:27 +1200
committer: Thomas Munro <[email protected]>
date : Mon, 3 Jul 2023 16:16:27 +1200
When predicate-locking btrees, we have a special case for completely
empty btrees, since there is no page to lock. This was racy, because,
without buffer lock held, a matching key could be inserted between the
_bt_search() and the PredicateLockRelation() calls.
Fix, by rechecking _bt_search() after taking the relation-level SIREAD
lock, if using SERIALIZABLE isolation and an empty btree is discovered.
Back-patch to all supported releases. Fixes one aspect of bug #17949.
Reported-by: Artem Anisimov <[email protected]>
Reviewed-by: Dmitry Dolgov <[email protected]>
Reviewed-by: Heikki Linnakangas <[email protected]>
Discussion: https://postgr.es/m/17949-a0f17035294a55e2%40postgresql.org
M src/backend/access/nbtree/nbtsearch.c
Revert "Improve pg_basebackup long file name test Windows robustness"
commit : bec0dcb62963403490abdb89983f3472377c828e
author : Andrew Dunstan <[email protected]>
date : Mon, 3 Jul 2023 10:53:16 -0400
committer: Andrew Dunstan <[email protected]>
date : Mon, 3 Jul 2023 10:53:16 -0400
Version 12 and older are missing the required infrastructure.
M src/bin/pg_basebackup/t/010_pg_basebackup.pl
Use older package name in pg_basebackup test
commit : e94a9afc5f9e488ac001f3d7b20e243c20a37877
author : Andrew Dunstan <[email protected]>
date : Mon, 3 Jul 2023 10:46:49 -0400
committer: Andrew Dunstan <[email protected]>
date : Mon, 3 Jul 2023 10:46:49 -0400
Commit 83ed4de20f inadvertently used the new package names. In version
14 or older, use TestLib intead of using PostgreSQL::Test::Utils
M src/bin/pg_basebackup/t/010_pg_basebackup.pl
Improve pg_basebackup long file name test Windows robustness
commit : 088e395c8ae06047784c41b08c54d526d00517c9
author : Andrew Dunstan <[email protected]>
date : Mon, 3 Jul 2023 10:06:26 -0400
committer: Andrew Dunstan <[email protected]>
date : Mon, 3 Jul 2023 10:06:26 -0400
Creation of a file with a very long name can create problems on Windows
due to its file path limits. Work around that by creating the file via a
symlink with a shorter name.
Error displayed by buildfarm animal fairywren.o
Backpatch to all live branches
M src/bin/pg_basebackup/t/010_pg_basebackup.pl
Make PG_TEST_NOCLEAN work for temporary directories in TAP tests
commit : af36c13a7e92863413c433d3acd8aea62b216e9a
author : Michael Paquier <[email protected]>
date : Mon, 3 Jul 2023 10:06:19 +0900
committer: Michael Paquier <[email protected]>
date : Mon, 3 Jul 2023 10:06:19 +0900
When set, this environment variable was only effective for data
directories but not for all the other temporary files created by
PostgreSQL::Test::Utils. Keeping the temporary files after a successful
run can be useful for debugging purposes.
The documentation is updated to reflect the new behavior, with contents
available in doc/ since v16 and in src/test/perl/README since v15.
Author: Jacob Champion
Reviewed-by: Daniel Gustafsson
Discussion: https://postgr.es/m/CAAWbhmgHtDH1SGZ+Fw05CsXtE0mzTmjbuUxLB9mY9iPKgM6cUw@mail.gmail.com
Discussion: https://postgr.es/m/[email protected]
Backpatch-through: 11
M src/test/perl/TestLib.pm
Fix marking of indisvalid for partitioned indexes at creation
commit : dbe0e5c56f313aec94cd8cf0c4f922867b2a95c5
author : Michael Paquier <[email protected]>
date : Fri, 30 Jun 2023 13:55:02 +0900
committer: Michael Paquier <[email protected]>
date : Fri, 30 Jun 2023 13:55:02 +0900
The logic that introduced partitioned indexes missed a few things when
invalidating a partitioned index when these are created, still the code
is written to handle recursions:
1) If created from scratch because a mapping index could not be found,
the new index created could be itself invalid, if for example it was a
partitioned index with one of its leaves invalid.
2) A CCI was missing when indisvalid is set for a parent index, leading
to inconsistent trees when recursing across more than one level for a
partitioned index creation if an invalidation of the parent was
required.
This could lead to the creation of a partition index tree where some of
the partitioned indexes are marked as invalid, but some of the parents
are marked valid, which is not something that should happen (as
validatePartitionedIndex() defines, indisvalid is switched to true for a
partitioned index iff all its partitions are themselves valid).
This patch makes sure that indisvalid is set to false on a partitioned
index if at least one of its partition is invalid. The flag is set to
true if *all* its partitions are valid.
The regression test added in this commit abuses of a failed concurrent
index creation, marked as invalid, that maps with an index created on
its partitioned table afterwards.
Reported-by: Alexander Lakhin
Reviewed-by: Alexander Lakhin
Discussion: https://postgr.es/m/[email protected]
Backpatch-through: 11
M src/backend/commands/indexcmds.c
M src/test/regress/expected/indexing.out
M src/test/regress/sql/indexing.sql
Fix order of operations in ExecEvalFieldStoreDeForm().
commit : 53b93e853ffed18cda1110db85f315671f40959b
author : Tom Lane <[email protected]>
date : Thu, 29 Jun 2023 10:19:10 -0400
committer: Tom Lane <[email protected]>
date : Thu, 29 Jun 2023 10:19:10 -0400
If the given composite datum is toasted out-of-line,
DatumGetHeapTupleHeader will perform database accesses to detoast it.
That can invalidate the result of get_cached_rowtype, as documented
(perhaps not plainly enough) in that function's API spec; which leads
to strange errors or crashes when we try to use the TupleDesc to read
the tuple. In short then, trying to update a field of a composite
column could fail intermittently if the overall column value is wide
enough to require toasting.
We can fix the bug at no cost by just changing the order of
operations, since we don't need the TupleDesc until after detoasting.
(Other callers of get_cached_rowtype appear to get this right already,
so there's only one bug.)
Note that the added regression test case reveals this bug reliably
only with debug_discard_caches/CLOBBER_CACHE_ALWAYS.
Per bug #17994 from Alexander Lakhin. Sadly, this patch does not fix
the missing-values issue revealed in the bug discussion; we'll need
some more work to cover that.
Discussion: https://postgr.es/m/[email protected]
M src/backend/executor/execExprInterp.c
M src/test/regress/expected/rowtypes.out
M src/test/regress/sql/rowtypes.sql
Ignore invalid indexes when enforcing index rules in ALTER TABLE ATTACH PARTITION
commit : 63b292e739626ad88e1897e93ba87d51c7b5462c
author : Michael Paquier <[email protected]>
date : Wed, 28 Jun 2023 15:57:53 +0900
committer: Michael Paquier <[email protected]>
date : Wed, 28 Jun 2023 15:57:53 +0900
A portion of ALTER TABLE .. ATTACH PARTITION is to ensure that the
partition being attached to the partitioned table has a correct set of
indexes, so as there is a consistent index mapping between the
partitioned table and its new-to-be partition. However, as introduced
in 8b08f7d, the current logic could choose an invalid index as a match,
which is something that can exist when dealing with more than two levels
of partitioning, like attaching a partitioned table (that has
partitions, with an index created by CREATE INDEX ON ONLY) to another
partitioned table.
A partitioned index with indisvalid set to false is equivalent to an
incomplete partition tree, meaning that an invalid partitioned index
does not have indexes defined in all its partitions. Hence, choosing an
invalid partitioned index can create inconsistent partition index trees,
where the parent attaching to is valid, but its partition may be
invalid.
In the report from Alexander Lakhin, this showed up as an assertion
failure when validating an index. Without assertions enabled, the
partition index tree would be actually broken, as indisvalid should
be switched to true for a partitioned index once all its partitions are
themselves valid. With two levels of partitioning, the top partitioned
table used a valid index and was able to link to an invalid index stored
on its partition, itself a partitioned table.
I have studied a few options here (like the possibility to switch
indisvalid to false for the parent), but came down to the conclusion
that we'd better rely on a simple rule: invalid indexes had better never
be chosen, so as the partition attached uses and creates indexes that
the parent expects. Some regression tests are added to provide some
coverage. Note that the existing coverage is not impacted.
This is a problem since partitioned indexes exist, so backpatch all the
way down to v11.
Reported-by: Alexander Lakhin
Discussion: https://postgr.es/[email protected]
Backpatch-through: 11
M src/backend/commands/tablecmds.c
M src/test/regress/expected/indexing.out
M src/test/regress/sql/indexing.sql
Check for interrupts and stack overflow in TParserGet().
commit : 3b4580f5ce984e8c47ed5932b196c83931c9ed8c
author : Tom Lane <[email protected]>
date : Sat, 24 Jun 2023 17:18:08 -0400
committer: Tom Lane <[email protected]>
date : Sat, 24 Jun 2023 17:18:08 -0400
TParserGet() recurses for some token types, meaning it's possible
to drive it to stack overflow. Since this is a minority behavior,
I chose to add the check_stack_depth() call to the two places that
recurse rather than doing it during every single call.
While at it, add CHECK_FOR_INTERRUPTS(), because this can run
unpleasantly long for long inputs.
Per bug #17995 from Zuming Jiang. This is old, so back-patch
to all supported branches.
Discussion: https://postgr.es/m/[email protected]
M src/backend/tsearch/wparser_def.c
Define OPENSSL_API_COMPAT
commit : 265c9138da58ae6d37dc5324e51d6fc782fe8923
author : Peter Eisentraut <[email protected]>
date : Sun, 19 Jul 2020 12:14:42 +0200
committer: Michael Paquier <[email protected]>
date : Sun, 19 Jul 2020 12:14:42 +0200
This avoids deprecation warnings from newer OpenSSL versions (3.0.0 in
particular).
This has been originally applied as 4d3db13 for v14 and newer versions,
but not on the older branches out of caution, and this commit closes the
gap to remove all these deprecation warnings in all the branches still
supported.
OPENSSL_API_COMPAT's value is set based on the oldest version of OpenSSL
supported on a branch: 1.0.1 for Postgres 13 and 0.9.8 for Postgres 11
and 12.
Reviewed-by: Daniel Gustafsson
Discussion: https://postgr.es/m/[email protected]
Discussion: https://postgr.es/m/[email protected]
Backpatch-through: 11
M configure
M configure.in
M src/include/pg_config.h.in
M src/include/pg_config.h.win32
M src/tools/msvc/Solution.pm
doc: rename "decades" to be more generic
commit : 4f8f0f8c397ee855caed36c7994b2450b11278b1
author : Bruce Momjian <[email protected]>
date : Fri, 23 Jun 2023 22:50:55 -0400
committer: Bruce Momjian <[email protected]>
date : Fri, 23 Jun 2023 22:50:55 -0400
Reported-by: Michael Paquier
Discussion: https://postgr.es/m/[email protected]
Backpatch-through: 11
M doc/src/sgml/history.sgml
Doc: Clarify the behavior of triggers/rules in a logical subscriber.
commit : 8a7ab6bc259afefc66f0830749dd604663a7458d
author : Amit Kapila <[email protected]>
date : Thu, 22 Jun 2023 12:06:14 +0530
committer: Amit Kapila <[email protected]>
date : Thu, 22 Jun 2023 12:06:14 +0530
By default, triggers and rules do not fire on a logical replication
subscriber based on the "session_replication_role" GUC being set to
"replica". However, the docs in the logical replication section assumed
that the reader understood how this GUC worked. This modifies the docs to
be more explicit and links back to the GUC itself.
Author: Jonathan Katz, Peter Smith
Reviewed-by: Vignesh C, Euler Taveira
Backpatch-through: 11
Discussion: https://postgr.es/m/[email protected]
M doc/src/sgml/logical-replication.sgml
Doc: mention that extended stats aren't used for joins
commit : f3c2fae0636ed7e9e1a6a4365192ae8ef7af425f
author : David Rowley <[email protected]>
date : Thu, 22 Jun 2023 12:50:55 +1200
committer: David Rowley <[email protected]>
date : Thu, 22 Jun 2023 12:50:55 +1200
Statistics defined by the CREATE STATISTICS command are only used to
assist with the selectivity estimations of base relations, never for
joins. Here we mention this fact in the notes section of the CREATE
STATISTICS command.
Discussion: https://postgr.es/m/CAApHDvrMuVgDOrmg_EtFDZ=AOovq6EsJNnHH1ddyZ8EqL4yzMw@mail.gmail.com
Backpatch-through: 11
M doc/src/sgml/ref/create_statistics.sgml
nbtree VACUUM: cope with topparent inconsistencies.
commit : 355917c07c633ab00e41c91eef262b3e438a63e4
author : Peter Geoghegan <[email protected]>
date : Wed, 21 Jun 2023 17:41:50 -0700
committer: Peter Geoghegan <[email protected]>
date : Wed, 21 Jun 2023 17:41:50 -0700
Avoid "right sibling %u of block %u is not next child" errors when
vacuuming a corrupt nbtree index. Just LOG the issue and press on.
That way VACUUM will have a decent chance of finishing off all required
processing for the index (and for the table as a whole).
This is similar to recent work from commit 5abff197, as well as work
from commit 5b861baa (later backpatched as commit 43e409ce), which
taught nbtree VACUUM to keep going when its "re-find" check fails. The
hardening added by this commit takes place directly after the "re-find"
check, right before the critical section for the first stage of page
deletion.
Author: Peter Geoghegan <[email protected]>
Discussion: https://postgr.es/m/CAH2-Wz=dayg0vjs4+er84TS9ami=csdzjpuiCGbEw=idhwqhzQ@mail.gmail.com
Backpatch: 11- (all supported versions).
M src/backend/access/nbtree/nbtpage.c
doc: update PG history as over "three decades"
commit : 9b4c44fef81918393fd2e770867041601d9a40c2
author : Bruce Momjian <[email protected]>
date : Wed, 21 Jun 2023 19:20:06 -0400
committer: Bruce Momjian <[email protected]>
date : Wed, 21 Jun 2023 19:20:06 -0400
Reported-by: Pierre <[email protected]>
Discussion: https://postgr.es/m/[email protected]
Backpatch-through: 11
M doc/src/sgml/history.sgml
Avoid Assert failure when processing empty statement in aborted xact.
commit : a98a040056c1f9322c2a271cbfaa4d36a5df0265
author : Tom Lane <[email protected]>
date : Wed, 21 Jun 2023 11:07:11 -0400
committer: Tom Lane <[email protected]>
date : Wed, 21 Jun 2023 11:07:11 -0400
exec_parse_message() wants to create a cached plan in all cases,
including for empty input. The empty-input path does not have
a test for being in an aborted transaction, making it possible
that plancache.c will fail due to trying to do database lookups
even though there's no real work to do.
One solution would be to throw an aborted-transaction error in
this path too, but it's not entirely clear whether the lack of
such an error was intentional or whether some clients might be
relying on non-error behavior. Instead, let's hack plancache.c
so that it treats empty statements with the same logic it
already had for transaction control commands, ensuring that it
can soldier through even in an already-aborted transaction.
Per bug #17983 from Alexander Lakhin. Back-patch to all
supported branches.
Discussion: https://postgr.es/m/[email protected]
M src/backend/utils/cache/plancache.c
M src/test/regress/expected/psql.out
M src/test/regress/sql/psql.sql
Fix the errhint message and docs for drop subscription failure.
commit : 0e73b9ae6c5f661fbe5c14332351190588741e52
author : Amit Kapila <[email protected]>
date : Wed, 21 Jun 2023 09:34:30 +0530
committer: Amit Kapila <[email protected]>
date : Wed, 21 Jun 2023 09:34:30 +0530
The existing errhint message and docs were missing the fact that we can't
disassociate from the slot unless the subscription is disabled.
Author: Robert Sjöblom, Peter Smith
Reviewed-by: Peter Eisentraut, Amit Kapila
Backpatch-through: 11
Discussion: https://postgr.es/m/[email protected]
M doc/src/sgml/ref/drop_subscription.sgml
M src/backend/commands/subscriptioncmds.c
Fix hash join when inner hashkey expressions contain Params.
commit : 9529b1eb1b833686b09aff8f325626872be34297
author : Tom Lane <[email protected]>
date : Tue, 20 Jun 2023 17:47:36 -0400
committer: Tom Lane <[email protected]>
date : Tue, 20 Jun 2023 17:47:36 -0400
If the inner-side expressions contain PARAM_EXEC Params, we must
re-hash whenever the values of those Params change. The executor
mechanism for that exists already, but we failed to invoke it because
finalize_plan() neglected to search the Hash.hashkeys field for
Params. This allowed a previous scan's hash table to be re-used
when it should not be, leading to rows missing from the join's output.
(I believe incorrectly-included join rows are impossible however,
since checking the real hashclauses would reject false matches.)
This bug is very ancient, dating probably to d24d75ff1 of 7.4.
Sadly, this simple fix depends on the plan representational changes
made by 2abd7ae9b, so it will only work back to v12. I thought
about trying to make some kind of hack for v11, but I'm leery
of putting code significantly different from what is used in the
newer branches into a nearly-EOL branch. Seeing that the bug
escaped detection for a full twenty years, problematic cases
must be rare; so I don't feel too awful about leaving v11 as-is.
Per bug #17985 from Zuming Jiang. Back-patch to v12.
Discussion: https://postgr.es/m/[email protected]
M src/backend/optimizer/plan/subselect.c
M src/test/regress/expected/join_hash.out
M src/test/regress/sql/join_hash.sql
Don't use partial unique indexes for unique proofs in the planner
commit : dcef5b052e09917c42c5100843152950616ff1f9
author : David Rowley <[email protected]>
date : Mon, 19 Jun 2023 13:02:52 +1200
committer: David Rowley <[email protected]>
date : Mon, 19 Jun 2023 13:02:52 +1200
Here we adjust relation_has_unique_index_for() so that it no longer makes
use of partial unique indexes as uniqueness proofs. It is incorrect to
use these as the predicates used by check_index_predicates() to set
predOK makes use of not only baserestrictinfo quals as proofs, but also
qual from join conditions. For relation_has_unique_index_for()'s case, we
need to know the relation is unique for a given set of columns before any
joins are evaluated, so if predOK was only set to true due to some join
qual, then it's unsafe to use such indexes in
relation_has_unique_index_for(). The final plan may not even make use
of that index, which could result in reading tuples that are not as
unique as the planner previously expected them to be.
Bug: #17975
Reported-by: Tor Erik Linnerud
Backpatch-through: 11, all supported versions
Discussion: https://postgr.es/m/17975-98a90c156f25c952%40postgresql.org
M src/backend/optimizer/path/indxpath.c
M src/backend/optimizer/plan/analyzejoins.c
M src/test/regress/expected/join.out
M src/test/regress/sql/join.sql
Fix typo in comment.
commit : 2f6e826f65798ccdb3860f346e9bef58c1c962c3
author : Amit Langote <[email protected]>
date : Fri, 16 Jun 2023 10:04:22 +0900
committer: Amit Langote <[email protected]>
date : Fri, 16 Jun 2023 10:04:22 +0900
Back-patch down to 11.
Author: Sho Kato (<[email protected]>)
Discussion: https://postgr.es/m/TYCPR01MB68499042A33BC32241193AAF9F5BA%40TYCPR01MB6849.jpnprd01.prod.outlook.com
M src/backend/rewrite/rewriteHandler.c
intarray: Prevent out-of-bound memory reads with gist__int_ops
commit : 6ecc1c02ade5388b5bd5aa957787d405ed489cf2
author : Michael Paquier <[email protected]>
date : Thu, 15 Jun 2023 13:45:42 +0900
committer: Michael Paquier <[email protected]>
date : Thu, 15 Jun 2023 13:45:42 +0900
As gist__int_ops stands in intarray, it is possible to store GiST
entries for leaf pages that can cause corruptions when decompressed.
Leaf nodes are stored as decompressed all the time by the compression
method, and the decompression method should map with that, retrieving
the contents of the page without doing any decompression. However, the
code authorized the insertion of leaf page data with a higher number of
array items than what can be supported, generating a NOTICE message to
inform about this matter (199 for a 8k page, for reference). When
calling the decompression method, a decompression would be attempted on
this leaf node item but the contents should be retrieved as they are.
The NOTICE message generated when dealing with the compression of a leaf
page and too many elements in the input array for gist__int_ops has been
introduced by 08ee64e, removing the marker stored in the array to track
if this is actually a leaf node. However, it also missed the fact that
the decompression path should do nothing for a leaf page. Hence, as the
code stand, a too-large array would be stored as uncompressed but the
decompression path would attempt a decompression rather that retrieving
the contents as they are.
This leads to various problems. First, even if 08ee64e tried to address
that, it is possible to do out-of-bound chunk writes with a large input
array, with the backend informing about that with WARNINGs. On
decompression, retrieving the stored leaf data would lead to incorrect
memory reads, leading to crashes or even worse.
Perhaps somebody would be interested in expanding the number of array
items that can be handled in a leaf page for this operator in the
future, which would require revisiting the choice done in 08ee64e, but
based on the lack of reports about this problem since 2005 it does not
look so. For now, this commit prevents the insertion of data for leaf
pages when using more array items that the code can handle on
decompression, switching the NOTICE message to an ERROR. If one wishes
to use more array items, gist__intbig_ops is an optional choice.
While on it, use ERRCODE_PROGRAM_LIMIT_EXCEEDED as error code when a
limit is reached, because that's what the module is facing in such
cases.
Author: Ankit Kumar Pandey, Alexander Lakhin
Reviewed-by: Richard Guo, Michael Paquier
Discussion: https://postgr.es/m/[email protected]
Discussion: https://postgr.es/m/[email protected]
Backpatch-through: 11
M contrib/intarray/_int_gist.c
M contrib/intarray/expected/_int.out
M contrib/intarray/sql/_int.sql
Correctly update hasSubLinks while mutating a rule action.
commit : b4110bdbfe9d3cede772e1f37f9a7467e63e158b
author : Tom Lane <[email protected]>
date : Tue, 13 Jun 2023 15:58:37 -0400
committer: Tom Lane <[email protected]>
date : Tue, 13 Jun 2023 15:58:37 -0400
rewriteRuleAction neglected to check for SubLink nodes in the
securityQuals of range table entries. This could lead to failing
to convert such a SubLink to a SubPlan, resulting in assertion
crashes or weird errors later in planning.
In passing, fix some poor coding in rewriteTargetView:
we should not pass the source parsetree's hasSubLinks
field to ReplaceVarsFromTargetList's outer_hasSubLinks.
ReplaceVarsFromTargetList knows enough to ignore that
when a Query node is passed, but it's still confusing
and bad precedent: if we did try to update that flag
we'd be updating a stale copy of the parsetree.
Per bug #17972 from Alexander Lakhin. This has been broken since
we added RangeTblEntry.securityQuals (although the presented test
case only fails back to 215b43cdc), so back-patch all the way.
Discussion: https://postgr.es/m/[email protected]
M src/backend/rewrite/rewriteHandler.c
M src/test/regress/expected/updatable_views.out
M src/test/regress/sql/updatable_views.sql
hstore: Tighten key/value parsing check for whitespaces
commit : edf1de65e529e85aa1aba15260339becbfe5d598
author : Michael Paquier <[email protected]>
date : Mon, 12 Jun 2023 09:14:19 +0900
committer: Michael Paquier <[email protected]>
date : Mon, 12 Jun 2023 09:14:19 +0900
isspace() can be locale-sensitive depending on the platform, causing
hstore to consider as whitespaces characters it should not see as such.
For example, U+0105, being decoded as 0xC4 0x85 in UTF-8, would be
discarded from the input given.
This problem is similar to 9ae2661, though it was missed that hstore
can also manipulate non-ASCII inputs, so replace the existing isspace()
calls with scanner_isspace().
This problem exists for a long time, so backpatch all the way down.
Author: Evan Jones
Discussion: https://postgr.es/m/CA+HWA9awUW0+RV_gO9r1ABZwGoZxPztcJxPy8vMFSTbTfi4jig@mail.gmail.com
Backpatch-through: 11
M contrib/hstore/Makefile
A contrib/hstore/expected/hstore_utf8.out
A contrib/hstore/expected/hstore_utf8_1.out
M contrib/hstore/hstore_io.c
A contrib/hstore/sql/hstore_utf8.sql
Fix missing initializations of MyProc.delayChkptEnd
commit : 9920552e1e4e5b5a203f2444f71202d7d46782f8
author : Michael Paquier <[email protected]>
date : Sun, 11 Jun 2023 10:33:59 +0900
committer: Michael Paquier <[email protected]>
date : Sun, 11 Jun 2023 10:33:59 +0900
This commit fixes an oversight introduced in 10520f4, that has added
delayChkptEnd to PGPROC to avoid ABI breakages on stable branches, where
two spots have missed to initialize this variable (delayChkpt was
switched back from int to bool, and it was initialized as 0 so there was
no consequences for it):
- InitProcess(), where the per-process data structures of a backend are
initialized.
- InitAuxiliaryProcess(), same but for auxiliary processes.
An interruption during relation truncation while this flag is set could
cause an assertion failure when a follow-up process does a relation
truncation while reusing the same PGPROC entry. A second effect could
be incorrect checkpoint end delays.
While on it, add an assertion in ProcArrayClearTransaction() for
delayChkptEnd to be in line with 5788e25. This is needed only for v14.
This issue affects v11~v14, but not v15~, as we use a single field
called delayChkptFlags to delay checkpoints there.
Author: suyu.cmj ([email protected])
Reviewed-by: Kyotaro Horiguchi, Michael Paquier
Discussion: https://postgr.es/m/9c3d2a49-db5f-43cb-840b-d58f9a684295.mengjuan.cmj@alibaba-inc.com
Backpatch-through: 11
M src/backend/storage/ipc/procarray.c
M src/backend/storage/lmgr/proc.c
Refactor routine to find single log content pattern in TAP tests
commit : 3509a060d7311b7f9904e011fd9574732a8c81b2
author : Michael Paquier <[email protected]>
date : Fri, 9 Jun 2023 11:56:46 +0900
committer: Michael Paquier <[email protected]>
date : Fri, 9 Jun 2023 11:56:46 +0900
The same routine to check if a specific pattern can be found in the
server logs was copied over four different test scripts. This refactors
the whole to use a single routine located in PostgreSQL::Test::Cluster,
named log_contains, to grab the contents of the server logs and check
for a specific pattern.
On HEAD, the code previously used assumed that slurp_file() could not
handle an undefined offset, setting it to zero, but slurp_file() does
do an extra fseek() before retrieving the log contents only if an offset
is defined. In two places, the test was retrieving the full log
contents with slurp_file() after calling substr() to apply an offset,
ignoring that slurp_file() would be able to handle that.
Backpatch all the way down to ease the introduction of new tests that
could rely on the new routine.
Author: Vignesh C
Reviewed-by: Andrew Dunstan, Dagfinn Ilmari Mannsåker, Michael Paquier
Discussion: https://postgr.es/m/CALDaNm0YSiLpjCmajwLfidQrFOrLNKPQir7s__PeVvh9U3uoTQ@mail.gmail.com
Backpatch-through: 11
M src/test/perl/PostgresNode.pm
M src/test/recovery/t/033_replay_tsp_drops.pl
doc: Fix example command for ALTER FOREIGN TABLE ... OPTIONS.
commit : 15b77758cad49c4168ce8252eda753e919529271
author : Fujii Masao <[email protected]>
date : Thu, 8 Jun 2023 20:11:52 +0900
committer: Fujii Masao <[email protected]>
date : Thu, 8 Jun 2023 20:11:52 +0900
In the documentation, previously the example command for
ALTER FOREIGN TABLE ... OPTIONS incorrectly included both
the option name and value with the DROP operation.
The correct syntax for the DROP operation requires only
the name of the option to be specified. This commit fixes
the example by removing the option value from the DROP operation.
Back-patch to all supported versions.
Author: Mehmet Emin KARAKAS <[email protected]>
Reviewed-by: Fujii Masao
Discussion: https://postgr.es/m/CANQrdXAHzbcEYhjGoe5A42OmfvdQhHFJzyKj9gJvHuDKyOF5Ng@mail.gmail.com
M doc/src/sgml/ref/alter_foreign_table.sgml
Use per-tuple context in ExecGetAllUpdatedCols
commit : 54e1b85872340f448a9c41dc2a3ba88a1d649158
author : Tomas Vondra <[email protected]>
date : Wed, 7 Jun 2023 16:48:50 +0200
committer: Tomas Vondra <[email protected]>
date : Wed, 7 Jun 2023 16:48:50 +0200
Commit fc22b6623b (generated columns) replaced ExecGetUpdatedCols() with
ExecGetAllUpdatedCols() in a couple places handling UPDATE (triggers and
lock mode). However, ExecGetUpdatedCols() did exec_rt_fetch() while
ExecGetAllUpdatedCols() also allocates memory through bms_union()
without paying attention to the memory context and happened to use the
long-lived ExecutorState, leaking the memory until the end of the query.
The amount of leaked memory is proportional to the number of (updated)
attributes, types of UPDATE triggers, and the number of processed rows
(which for UPDATE ... FROM ... may be much higher than updated rows).
Fixed by switching to the per-tuple context in GetAllUpdatedColumns().
This is fine for all in-core callers, but external callers may need to
copy the result. But we're not aware of any such callers.
Note the issue was introduced by fc22b6623b, but the macros were later
renamed by f50e888990.
Backpatch to 12, where the issue was introduced.
Reported-by: Tomas Vondra
Reviewed-by: Andres Freund, Tom Lane, Jakub Wartak
Backpatch-through: 12
Discussion: https://postgr.es/m/[email protected]
M src/backend/executor/execUtils.c
Initialize 'recordXtime' to silence compiler warning.
commit : 7c35768cde241a61cdc6fb32663cdb5aeb559022
author : Heikki Linnakangas <[email protected]>
date : Tue, 6 Jun 2023 20:30:53 +0300
committer: Heikki Linnakangas <[email protected]>
date : Tue, 6 Jun 2023 20:30:53 +0300
In reality, recordXtime will always be set by the getRecordTimestamp
call, but the compiler doesn't necessarily see that.
Back-patch to all supported versions.
Author: Tristan Partin
Discussion: https://www.postgresql.org/message-id/CT5MN8E11U0M.1NYNCHXYUHY41@gonk
M src/backend/access/transam/xlog.c
doc: add missing "the" in LATERAL sentence.
commit : ddbeb1d924274b61cc3b8aab02a774a3972001a0
author : Bruce Momjian <[email protected]>
date : Thu, 1 Jun 2023 10:22:16 -0400
committer: Bruce Momjian <[email protected]>
date : Thu, 1 Jun 2023 10:22:16 -0400
Backpatch-through: 11
M doc/src/sgml/queries.sgml
nbtree VACUUM: cope with right sibling link corruption.
commit : 188dad680e8f32308311c4e1edf4955bf33206c5
author : Peter Geoghegan <[email protected]>
date : Thu, 25 May 2023 15:32:48 -0700
committer: Peter Geoghegan <[email protected]>
date : Thu, 25 May 2023 15:32:48 -0700
Avoid "right sibling's left-link doesn't match" errors when vacuuming a
corrupt nbtree index. Just LOG the issue and press on. That way VACUUM
will have a decent chance of finishing off all required processing for
the index (and for the table as a whole).
This error was seen in the field from time to time (it's more than a
theoretical risk), so giving VACUUM the ability to press on like this
has real value. Nothing short of a REINDEX is expected to fix the
underlying index corruption, so giving up (by throwing an error) risks
making a bad situation far worse. Anything that blocks forward progress
by VACUUM like this might go unnoticed for a long time. This could
eventually lead to a wraparound/xidStopLimit outage.
Note that _bt_unlink_halfdead_page() has always been able to bail on
page deletion when the target page's left sibling page was in an
inconsistent state. It now does the same thing (returns false to back
out of the second phase of deletion) when it notices sibling link
corruption in the target page's right sibling page.
This is similar to the work from commit 5b861baa (later backpatched as
commit 43e409ce), which taught nbtree to press on with vacuuming an
index when page deletion fails to "re-find" a downlink in the target
page's parent page. The "re-find" check seems to make VACUUM bail on
page deletion more often in practice, but there is no reason to take any
chances here.
Author: Peter Geoghegan <[email protected]>
Reviewed-By: Heikki Linnakangas <[email protected]>
Discussion: https://postgr.es/m/CAH2-Wzko2q2kP1+UvgJyP9g0mF4hopK0NtQZcxwvMv9_ytGhkQ@mail.gmail.com
Backpatch: 11- (all supported versions).
M src/backend/access/nbtree/nbtpage.c
Fix misbehavior of EvalPlanQual checks with multiple result relations.
commit : ff77d8687fa3cee525fbfcf6b50b685c1ab8feab
author : Tom Lane <[email protected]>
date : Fri, 19 May 2023 14:26:34 -0400
committer: Tom Lane <[email protected]>
date : Fri, 19 May 2023 14:26:34 -0400
The idea of EvalPlanQual is that we replace the query's scan of the
result relation with a single injected tuple, and see if we get a
tuple out, thereby implying that the injected tuple still passes the
query quals. (In join cases, other relations in the query are still
scanned normally.) This logic was not updated when commit 86dc90056
made it possible for a single DML query plan to have multiple result
relations, when the query target relation has inheritance or partition
children. We replaced the output for the current result relation
successfully, but other result relations were still scanned normally;
thus, if any other result relation contained a tuple satisfying the
quals, we'd think the EPQ check passed, even if it did not pass for
the injected tuple itself. This would lead to update or delete
actions getting performed when they should have been skipped due to
a conflicting concurrent update in READ COMMITTED isolation mode.
Fix by blocking all sibling result relations from emitting tuples
during an EvalPlanQual recheck. In the back branches, the fix is
complicated a bit by the need to not change the size of struct
EPQState (else we'd have ABI-breaking changes in offsets in
struct ModifyTableState). Like the back-patches of 3f7836ff6
and 4b3e37993, add a separately palloc'd struct to avoid that.
The logic is the same as in HEAD otherwise.
This is only a live bug back to v14 where 86dc90056 came in.
However, I chose to back-patch the test cases further, on the
grounds that this whole area is none too well tested. I skipped
doing so in v11 though because none of the test applied cleanly,
and it didn't quite seem worth extra work for a branch with only
six months to live.
Per report from Ante Krešić (via Aleksander Alekseev)
Discussion: https://postgr.es/m/CAJ7c6TMBTN3rcz4=AjYhLPD_w3FFT0Wq_C15jxCDn8U4tZnH1g@mail.gmail.com
M src/test/isolation/expected/eval-plan-qual.out
M src/test/isolation/specs/eval-plan-qual.spec
Avoid naming conflict between transactions.sql and namespace.sql.
commit : cf9de891ba388829c4a777f48c22fbf93a24d3ea
author : Tom Lane <[email protected]>
date : Fri, 19 May 2023 10:57:46 -0400
committer: Tom Lane <[email protected]>
date : Fri, 19 May 2023 10:57:46 -0400
Commits 681d9e462 et al added a test case in namespace.sql that
implicitly relied on there not being a table "public.abc".
However, the concurrently-run transactions.sql test creates precisely
such a table, so with the right timing you'd get a failure.
Creating a table named as generically as "abc" in a common schema
seems like bad practice, so fix this by changing the name of
transactions.sql's table. (Compare 2cf8c7aa4.)
Marina Polyakova
Discussion: https://postgr.es/m/[email protected]
M src/test/regress/expected/transactions.out
M src/test/regress/sql/transactions.sql
Fix handling of empty ranges and NULLs in BRIN
commit : d78a66d92c739843ff29e056e3bddf8a9adc99d2
author : Tomas Vondra <[email protected]>
date : Fri, 19 May 2023 00:00:22 +0200
committer: Tomas Vondra <[email protected]>
date : Fri, 19 May 2023 00:00:22 +0200
BRIN indexes did not properly distinguish between summaries for empty
(no rows) and all-NULL ranges, treating them as essentially the same
thing. Summaries were initialized with allnulls=true, and opclasses
simply reset allnulls to false when processing the first non-NULL value.
This however produces incorrect results if the range starts with a NULL
value (or a sequence of NULL values), in which case we forget the range
contains NULL values when adding the first non-NULL value.
This happens because the allnulls flag is used for two separate
purposes - to mark empty ranges (not representing any rows yet) and
ranges containing only NULL values.
Opclasses don't know which of these cases it is, and so don't know
whether to set hasnulls=true. Setting the flag in both cases would make
it correct, but it would also make BRIN indexes useless for queries with
IS NULL clauses. All ranges start empty (and thus allnulls=true), so all
ranges would end up with either allnulls=true or hasnulls=true.
The severity of the issue is somewhat reduced by the fact that it only
happens when adding values to an existing summary with allnulls=true.
This can happen e.g. for small tables (because a summary for the first
range exists for all BRIN indexes), or for tables with large fraction of
NULL values in the indexed columns.
Bulk summarization (e.g. during CREATE INDEX or automatic summarization)
that processes all values at once is not affected by this issue. In this
case the flags were updated in a slightly different way, not forgetting
the NULL values.
To identify empty ranges we use a new flag, stored in an unused bit in
the BRIN tuple header so the on-disk format remains the same. A matching
flag is added to BrinMemTuple, into a 3B gap after bt_placeholder.
That means there's no risk of ABI breakage, although we don't actually
pass the BrinMemTuple to any public API.
We could also skip storing index tuples for empty summaries, but then
we'd have to always process such ranges - even if there are no rows in
large parts of the table (e.g. after a bulk DELETE), it would still
require reading the pages etc. So we store them, but ignore them when
building the bitmap.
Backpatch to 11. The issue exists since BRIN indexes were introduced in
9.5, but older releases are already EOL.
Backpatch-through: 11
Reviewed-by: Justin Pryzby, Matthias van de Meent, Alvaro Herrera
Discussion: https://postgr.es/m/[email protected]
M src/backend/access/brin/brin.c
M src/backend/access/brin/brin_tuple.c
M src/include/access/brin_tuple.h
M src/test/modules/brin/expected/summarization-and-inprogress-insertion.out
M src/test/modules/brin/specs/summarization-and-inprogress-insertion.spec
Fix handling of NULLs when merging BRIN summaries
commit : d42ffda685f5dbd123df59c2f8050e8fb09164c7
author : Tomas Vondra <[email protected]>
date : Thu, 18 May 2023 13:00:31 +0200
committer: Tomas Vondra <[email protected]>
date : Thu, 18 May 2023 13:00:31 +0200
When merging BRIN summaries, union_tuples() did not correctly update the
target hasnulls/allnulls flags. When merging all-NULL summary into a
summary without any NULL values, the result had both flags set to false
(instead of having hasnulls=true).
This happened because the code only considered the hasnulls flags,
ignoring the possibility the source summary has allnulls=true.
Discovered while investigating issues with handling empty BRIN ranges
and handling of NULL values, but it's a separate problem (has nothing to
do with empty ranges).
Fixed by considering both flags on the source summary, and updating the
hasnulls flag on the target summary.
Backpatch to 11. The bug exists since 9.5 (where BRIN indexes were
introduced), but those releases are EOL already.
Discussion: https://postgr.es/m/9d993d0d-e431-2196-9ccc-0554d0e60154%40enterprisedb.com
M src/backend/access/brin/brin_inclusion.c
M src/backend/access/brin/brin_minmax.c
Ensure Soundex difference() function handles empty input sanely.
commit : 0966291a4ade47f7c14313ab7868d1de4e4f6688
author : Tom Lane <[email protected]>
date : Tue, 16 May 2023 10:53:42 -0400
committer: Tom Lane <[email protected]>
date : Tue, 16 May 2023 10:53:42 -0400
fuzzystrmatch's difference() function assumes that _soundex()
always initializes its output buffer fully. This was not so for
the case of a string containing no alphabetic characters, resulting
in unstable output and Valgrind complaints.
Fix by using memset() to fill the whole buffer in the early-exit
case. Also make some cosmetic improvements (I didn't care for the
random switches between "instr[0]" and "*instr" notation).
Report and diagnosis by Alexander Lakhin (bug #17935).
Back-patch to all supported branches.
Discussion: https://postgr.es/m/[email protected]
M contrib/fuzzystrmatch/expected/fuzzystrmatch.out
M contrib/fuzzystrmatch/fuzzystrmatch.c
M contrib/fuzzystrmatch/sql/fuzzystrmatch.sql
Doc: Fix link to fillfactor reloption.
commit : 3282e071bc594923f5d5f09c6f5b548e425a558a
author : Peter Geoghegan <[email protected]>
date : Wed, 10 May 2023 10:49:41 -0700
committer: Peter Geoghegan <[email protected]>
date : Wed, 10 May 2023 10:49:41 -0700
Fix a link from the "Heap-Only Tuples" documentation section.
Previously, its "fillfactor" link pointed to the "CREATE TABLE"
command's documentation. Now the link directly points to the fillfactor
storage parameter documentation (which is about half way into the
"CREATE TABLE" sect1).
Oversight in commit 115464bb.
Backpatch: 12-, the first version with a usable reloption link.
M doc/src/sgml/storage.sgml