| Commit message (Collapse) | Author | Age |
|---|
| ... | |
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
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
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| |
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/80d0201636665d82185942e7112257b4@postgrespro.ru
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
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/402430e4-7d9d-6cf1-09ef-464d80afff3b@enterprisedb.com
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
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
|
| | |
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
If an SRF in the FROM clause references a table having row-level
security policies, and we inline that SRF into the calling query,
we neglected to mark the plan as potentially dependent on which
role is executing it. This could lead to later executions in the
same session returning or hiding rows that should have been hidden
or returned instead.
Our thanks to Wolfgang Walther for reporting this problem.
Stephen Frost and Tom Lane
Security: CVE-2023-2455
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
The two methods don't cooperate, so set_config_option("search_path",
...) has been ineffective under non-empty overrideStack. This defect
enabled an attacker having database-level CREATE privilege to execute
arbitrary code as the bootstrap superuser. While that particular attack
requires v13+ for the trusted extension attribute, other attacks are
feasible in all supported versions.
Standardize on the combination of NewGUCNestLevel() and
set_config_option("search_path", ...). It is newer than
PushOverrideSearchPath(), more-prevalent, and has no known
disadvantages. The "override" mechanism remains for now, for
compatibility with out-of-tree code. Users should update such code,
which likely suffers from the same sort of vulnerability closed here.
Back-patch to v11 (all supported versions).
Alexander Lakhin. Reported by Alexander Lakhin.
Security: CVE-2023-2454
|
| |
|
|
|
| |
Source-Git-URL: https://git.postgresql.org/git/pgtranslation/messages.git
Source-Git-Hash: 438a2f5d29665ae0dd54f5ccd4f73f1360530c82
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Commit 153e215677 added the portlock directory. This is created in
$ENV{top_builddir} if it is set. Under PGXS, top_builddir points into
the installation directory, which is not necessarily writable and in
any case inappropriate to use by a test suite. The cause of the
problem is that the prove_installcheck target in Makefile.global
exports top_builddir, which isn't useful (since no other Perl code
actually reads it) and breaks this use case. The reason this code is
there is probably that is has been dragged around with various other
changes, in particular a0fc813266, but without a real purpose of its
own. By just removing the exporting of top_builddir in
prove_installcheck, the portlock directory then ends up under
tmp_check in the build directory, which is more suitable.
Reviewed-by: Andrew Dunstan <andrew@dunslane.net>
Discussion: https://www.postgresql.org/message-id/78d1cfa6-0065-865d-584b-cde6d8c18aff@enterprisedb.com
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
If we exit a PG_TRY block early via "continue", "break", "goto", or
"return", we'll skip unwinding its exception stack. This change
moves a couple of such "return" statements in PL/Python out of
PG_TRY blocks. This was introduced in d0aa965c0a and affects all
supported versions.
We might also be able to add compile-time checks to prevent
recurrence, but that is left as a future exercise.
Reported-by: Mikhail Gribkov, Xing Guo
Author: Xing Guo
Reviewed-by: Michael Paquier, Andres Freund, Tom Lane
Discussion: https://postgr.es/m/CAMEv5_v5Y%2B-D%3DCO1%2Bqoe16sAmgC4sbbQjz%2BUtcHmB6zcgS%2B5Ew%40mail.gmail.com
Discussion: https://postgr.es/m/CACpMh%2BCMsGMRKFzFMm3bYTzQmMU5nfEEoEDU2apJcc4hid36AQ%40mail.gmail.com
Backpatch-through: 11 (all supported versions)
|
| |
|
|
|
|
|
|
|
|
|
|
| |
These functions incautiously fetched the array's first lower bound
even when the array is zero-dimensional, thus fetching the word
after the allocated array space. While almost always harmless,
with very bad luck this could result in SIGSEGV. Fix by adding
an early exit for empty input.
Per bug #17920 from Alexander Lakhin.
Discussion: https://postgr.es/m/17920-f7c228c627b6d02e%40postgresql.org
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Like plperl before f47004add, plpython wasn't being sufficiently
careful about checking that list-of-list structures represent
rectangular arrays, so that it would accept some cases in which
different parts of the "array" are nested to different depths.
This was exacerbated by Python's weak distinction between
sequences and lists, so that in some cases strings could get
treated as though they are lists (and burst into individual
characters) even though a different ordering of the upper-level
list would give a different result.
Some of this behavior was unreachable (without risking a crash)
before 81eaaf65e. It seems like a good idea to clean it all up
in the same releases, rather than shipping a non-crashing but
nonetheless visibly buggy behavior in the name of minimal change.
Hence, back-patch.
Per bug #17912 and further testing by Alexander Lakhin.
Discussion: https://postgr.es/m/17912-82ceed78731d9cdc@postgresql.org
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
plperl_array_to_datum() wasn't sufficiently careful about checking
that nested lists represent a rectangular array structure; it would
accept inputs such as "[1, []]". This is a bit related to the
PL/Python bug fixed in commit 81eaaf65e, but it doesn't seem to
provide any direct route to a memory stomp. Instead the likely
failure mode is for makeMdArrayResult to be passed fewer Datums than
the claimed array dimensionality requires, possibly leading to a wild
pointer dereference and SIGSEGV.
Per report from Alexander Lakhin. It's been broken for a long
time, so back-patch to all supported branches.
Discussion: https://postgr.es/m/5ebae5e4-d401-fadf-8585-ac3eaf53219c@gmail.com
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
If PLySequence_ToArray came across a zero-length sublist, it'd compute
the overall array size as zero, possibly leading to a memory clobber.
(This would likely qualify as a security bug, were it not that plpython
is an untrusted language already.)
I think there are other corner-case issues in this code as well, notably
that the error messages don't match the core code and for some ranges
of array sizes you'd get "invalid memory alloc request size" rather than
the intended message about array size.
Really this code has no business doing its own array size calculation
at all, so remove the faulty code in favor of using ArrayGetNItems().
Per bug #17912 from Alexander Lakhin. Bug seems to have come in with
commit 94aceed31, so back-patch to all supported branches.
Discussion: https://postgr.es/m/17912-82ceed78731d9cdc@postgresql.org
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
CREATE SCHEMA AUTHORIZATION with appended schema elements can lead to
crashes when comparing the schema name of the query with the schemas
used in the qualification of some clauses in the elements' queries.
The origin of the problem is that the transformation routine for the
elements listed in a CREATE SCHEMA query uses as new, expected, schema
name the one listed in CreateSchemaStmt itself. However, depending on
the query, CreateSchemaStmt.schemaname may be NULL, being computed
instead from the role specification of the query given by the
AUTHORIZATION clause, that could be either:
- A user name string, with the new schema name being set to the same
value as the role given.
- Guessed from CURRENT_ROLE, SESSION_ROLE or CURRENT_ROLE, with a new
schema name computed from the security context where CREATE SCHEMA is
running.
Regression tests are added for CREATE SCHEMA with some appended elements
(some of them with schema qualifications), covering also some role
specification patterns.
While on it, this simplifies the context structure used during the
transformation of the elements listed in a CREATE SCHEMA query by
removing the fields for the role specification and the role type. They
were not used, and for the role specification this could be confusing as
the schema name may by extracted from that at the beginning of
CreateSchemaCommand().
This issue exists for a long time, so backpatch down to all the versions
supported.
Reported-by: Song Hongyu
Author: Michael Paquier
Reviewed-by: Richard Guo
Discussion: https://postgr.es/m/17909-f65c12dfc5f0451d@postgresql.org
Backpatch-through: 11
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Commit 1021bd6a89 excluded autovacuum workers from cost-limit balance
calculations when per-relation options were set. The code checks for
limit and cost_delay being greater than zero, but since cost_delay can
be set to -1 the test needs to check for greater than or zero.
Backpatch to all supported branches since 1021bd6a89 was backpatched
all the way at the time.
Author: Masahiko Sawada <sawada.mshk@gmail.com>
Reviewed-by: Melanie Plageman <melanieplageman@gmail.com>
Reviewed-by: Daniel Gustafsson <daniel@yesql.se>
Discussion: https://postgr.es/m/CAD21AoBS7o6Ljt_vfqPQPf67AhzKu3fR0iqk8B=vVYczMugKMQ@mail.gmail.com
Backpatch-through: v11 (all supported branches)
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Commit 04fe805a1 modified plpgsql so that datatype casts make use of
expressions cached by plancache.c, in place of older code where these
expression trees were managed by plpgsql itself. However, I (tgl)
forgot that we use a separate, shorter-lived cast info hashtable in
DO blocks. The new mechanism thus resulted in session-lifespan
leakage of the plancache data once a DO block containing one or more
casts terminated. To fix, split the cast hash table into two parts,
one that tracks only the plancache's CachedExpressions and one that
tracks the expression state trees generated from them. DO blocks need
their own expression state trees and hence their own version of the
second hash table, but there's no reason they can't share the
CachedExpressions with regular plpgsql functions.
Per report from Ajit Awekar. Back-patch to v12 where the issue
was introduced.
Ajit Awekar and Tom Lane
Discussion: https://postgr.es/m/CAHv6PyrNaqdvyWUspzd3txYQguFTBSnhx+m6tS06TnM+KWc_LQ@mail.gmail.com
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Commit 6df7a9698bb accidentally included two identical prototypes for
default_multirange_selectivi() and commit 086cf1458c6 added a break;
statement where one was already present, thus duplicating it. While
there is no bug caused by this, fix by removing the duplicated lines
as they provide no value.
Backpatch the fix for duplicate prototypes to v14 and the duplicate
break statement fix to all supported branches to avoid backpatching
hazards due to the removal.
Reported-by: Anton Voloshin <a.voloshin@postgrespro.ru>
Discussion: https://postgr.es/m/0e69cb60-0176-f6d0-7e15-6478b7d85724@postgrespro.ru
|
| |
|
|
|
|
|
|
|
|
|
|
|
| |
For regex escape sequences, just test directly for the relevant ASCII
characters rather than using locale-sensitive character
classification.
This fixes an assertion failure when a locale considers a non-ASCII
character, such as "൧", to be a digit.
Reported-by: Richard Guo
Discussion: https://postgr.es/m/CAMbWs49Q6UoKGeT8pBkMtJGJd+16CBFZaaWUk9Du+2ERE5g_YA@mail.gmail.com
Backpatch-through: 11
|
| |
|
|
|
|
|
|
|
|
|
| |
DST law changes in Egypt, Greenland, Morocco, and Palestine.
When observing Moscow time, Europe/Kirov and Europe/Volgograd now
use the abbreviations MSK/MSD instead of numeric abbreviations,
for consistency with other timezones observing Moscow time.
Also, America/Yellowknife is no longer distinct from America/Edmonton;
this affects some pre-1948 timestamps in that area.
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
When compiled with -C ORACLE, ecpg_get_data() had a one-off issue where
it would incorrectly store the null terminator byte to str[-1] when
varcharsize is 0, which is something that can happen when using SQLDA.
This would eat 1 byte from the previous field stored, corrupting the
results generated.
All the callers of ecpg_get_data() estimate and allocate enough storage
for the data received, and the fix of this commit relies on this
assumption. Note that this maps to the case where no padding or
truncation is required.
This issue has been introduced by 3b7ab43 with the Oracle compatibility
option, so backpatch down to v11.
Author: Kyotaro Horiguchi
Discussion: https://postgr.es/m/20230410.173500.440060475837236886.horikyota.ntt@gmail.com
Backpatch-through: 11
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
If the last few pages in the specified range are empty (all zero),
then log_newpage_range() could try to emit an empty WAL record
containing no FPIs. This at least upsets an Assert in
ReserveXLogInsertLocation, and might perhaps have bad real-world
consequences in non-assert builds.
This has been broken since log_newpage_range() was introduced,
but the case was hard if not impossible to hit before commit 3d6a98457
decided it was okay to leave VM and FSM pages intentionally zero.
Nonetheless, it seems prudent to back-patch. log_newpage_range()
was added in v12 but later back-patched, so this affects all
supported branches.
Matthias van de Meent, per report from Justin Pryzby
Discussion: https://postgr.es/m/ZD1daibg4RF50IOj@telsasoft.com
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Commit 3e310d837 taught isAssignmentIndirectionExpr() to look through
CoerceToDomain nodes. That's not sufficient, because since commit
04fe805a1 it's been possible for the planner to simplify
CoerceToDomain to RelabelType when the domain has no constraints
to enforce. So we need to look through RelabelType too.
Per bug #17897 from Alexander Lakhin. Although 3e310d837 was
back-patched to v11, it seems sufficient to apply this change
to v12 and later, since 04fe805a1 came in in v12.
Dmitry Dolgov
Discussion: https://postgr.es/m/17897-4216c546c3874044@postgresql.org
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
The partition pruning logic assumed that "b IS NOT true" was exactly the
same as "b IS FALSE". This is not the case when considering NULL values.
Fix this so we correctly include any partition which could hold NULL
values for the NOT case.
Additionally, this fixes a bug in the partition pruning code which handles
partitioned tables partitioned like ((NOT boolcol)). This is a seemingly
unlikely schema design, and it was untested and also broken.
Here we add tests for the ((NOT boolcol)) case and insert some actual data
into those tables and verify we do get the correct rows back when running
queries. I've also adjusted the existing boolpart tests to include some
data and verify we get the correct results too.
Both the bugs being fixed here could lead to incorrect query results with
fewer rows being returned than expected. No additional rows could have
been returned accidentally.
In passing, remove needless ternary expression. It's more simple just to
pass !is_not_clause to makeBoolConst(). It makes sense to do this so the
code is consistent with the bug fix in the "else if" condition just below.
David Kimura did submit a patch to fix the first of the issues here, but
that's not what's being committed here.
Reported-by: David Kimura
Reviewed-by: Richard Guo, David Kimura
Discussion: https://postgr.es/m/CAHnPFjQ5qxs6J_p+g8=ww7GQvfn71_JE+Tygj0S7RdRci1uwPw@mail.gmail.com
Backpatch-through: 11, all supported versions
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Our policy since commit ab77a5a45 has been that a plan node having
any initplans is automatically not parallel-safe. (This could be
relaxed, but not today.) clean_up_removed_plan_level neglected
this, and could attach initplans to a parallel-safe child plan
node without clearing the plan's parallel-safe flag. That could
lead to "subplan was not initialized" errors at runtime, in case
an initplan referenced another one and only the referencing one
got transmitted to parallel workers.
The fix in clean_up_removed_plan_level is trivial enough.
materialize_finished_plan also moves initplans from one node
to another, but it's okay because it already copies the source
node's parallel_safe flag. The other place that does this kind
of thing is standard_planner's hack to inject a top-level Gather
when debug_parallel_query is active. But that's actually dead
code given that we're correctly enforcing the "initplans aren't
parallel safe" rule, so just replace it with an Assert that
there are no initplans.
Also improve some related comments.
Normally we'd add a regression test case for this sort of bug.
The mistake itself is already reached by existing tests, but there
is accidentally no visible problem. The only known test case that
creates an actual failure seems too indirect and fragile to justify
keeping it as a regression test (not least because it fails to fail
in v11, though the bug is clearly present there too).
Per report from Justin Pryzby. Back-patch to all supported branches.
Discussion: https://postgr.es/m/ZDVt6MaNWkRDO1LQ@telsasoft.com
|
| |
|
|
|
|
|
|
|
| |
Similar to 8dff2f224, this disables DNS lookups by the Kerberos library
to look up the KDC and the realm while the Kerberos tests are running.
In some environments, these lookups can take a long time and end up
timing out and causing tests to fail. Further, since this isn't really
our domain, we shouldn't be sending out these DNS requests during our
tests.
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
In our Kerberos test suite, there isn't much need to worry about the
normal canonicalization that Kerberos provides by looking up the reverse
DNS for the IP address connected to, and in some cases it can actively
cause problems (eg: a captive portal wifi where the normally not
resolvable localhost address used ends up being resolved anyway, and
not to the domain we are using for testing, causing the entire
regression test to fail with errors about not being able to get a TGT
for the remote realm for cross-realm trust).
Therefore, disable it by adding rdns = false into the krb5.conf that's
generated for the test.
Reviewed-By: Heikki Linnakangas
Discussion: https://postgr.es/m/Y/QD2zDkDYQA1GQt@tamriel.snowman.net
|
| |
|
|
|
|
|
|
|
|
|
| |
The tests added by commits 029dea882 et al turn out to produce
different output under -DRANDOMIZE_ALLOCATED_MEMORY. This is
not a bug exactly: that flag causes coerce_type() to invoke
the input function twice when coercing an unknown-type literal
to a specific type. So you get tsqueryin's bleat about an empty
tsquery twice. Revise the test query to avoid that.
Discussion: https://postgr.es/m/20230406213813.uep7plg6lvcywujo@awork3.anarazel.de
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
tsquery's GETQUERY() macro is only safe to apply to a tsquery
that is known non-empty; otherwise it gives a pointer to garbage.
Before commit 5a617d75d, ts_headline() avoided this pitfall, but
only in a very indirect, nonobvious way. (hlCover could not reach
its TS_execute call, because if the query contains no lexemes
then hlFirstIndex would surely return -1.) After that commit,
it fell into the trap, resulting in weird errors such as
"unrecognized operator" and/or valgrind complaints. In HEAD,
fix this by not calling TS_execute_locations() at all for an
empty query. In the back branches, add a defensive check to
hlCover() --- that's not fixing any live bug, but I judge the
code a bit too fragile as-is.
Also, both mark_hl_fragments() and mark_hl_words() were careless
about the possibility of empty search text: in the cases where
no match has been found, they'd end up telling mark_fragment() to
mark from word indexes 0 to 0 inclusive, even when there is no
word 0. This is harmless since we over-allocated the prs->words
array, but it does annoy valgrind. Fix so that the end index is -1
and thus mark_fragment() will do nothing in such cases.
Bottom line is that this fixes a live bug in HEAD, but in the
back branches it's only getting rid of a valgrind nitpick.
Back-patch anyway.
Per report from Alexander Lakhin.
Discussion: https://postgr.es/m/c27f642d-020b-01ff-ae61-086af287c4fd@gmail.com
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Up through v11 it was sensible to use the "oid" system column as
a foreign key column, but since that was removed there's no visible
usefulness in making any of the remaining system columns a foreign
key. Moreover, since the TupleTableSlot rewrites in v12, such cases
actively fail because of implicit assumptions that only user columns
appear in foreign keys. The lack of complaints about that seems
like good evidence that no one is trying to do it. Hence, rather
than trying to repair those assumptions (of which there are at least
two, maybe more), let's just forbid the case up front.
Per this patch, a system column in either the referenced or
referencing side of a foreign key will draw this error; however,
putting one in the referenced side would have failed later anyway,
since we don't allow unique indexes to be made on system columns.
Per bug #17877 from Alexander Lakhin. Back-patch to v12; the
case still appears to work in v11, so we shouldn't break it there.
Discussion: https://postgr.es/m/17877-4bcc658e33df6de1@postgresql.org
|
| |
|
|
|
|
|
|
|
|
|
|
| |
The totalrows/totaldeadrows outputs were left uninitialized in cases
where we find no analyzable child tables of a partitioned table. This
could lead to setting the partitioned table's pg_class.reltuples value
to garbage. It's not clear that that would have any very bad effects
in practice, but fix it anyway because it's making valgrind unhappy.
Reported and diagnosed by Alexander Lakhin (bug #17880).
Discussion: https://postgr.es/m/17880-9282037c923d856e@postgresql.org
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
When calling generateSerialExtraStmts(), we would pass in the
constraint->options. In some cases, generateSerialExtraStmts() would
modify the referenced List to remove elements from it, but doing so is
invalid without assigning the list back to all variables that point to it.
In the particular reported problem case, the List became empty, in which
cases it became NIL, but the passed in constraint->options didn't get to
find out about that and was left pointing to free'd memory.
To fix this, just perform a list_copy() inside generateSerialExtraStmts().
We could just do a list_copy() just before we perform the delete from the
list, however, that seems less robust. Let's make sure the generated
CreateSeqStmt gets a completely different copy of the list to be safe.
Bug: #17879
Reported-by: Fei Changhong
Diagnosed-by: Fei Changhong
Discussion: https://postgr.es/m/17879-b7dfb5debee58ff5@postgresql.org
Backpatch-through: 11, all supported versions
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
gistBuildCallback tried to fetch the size of an index tuple that
might have already been freed by gistProcessEmptyingQueue.
While this seems to usually be harmless in production builds,
in principle it could result in a SIGSEGV, or more likely a bogus
value for indtuplesSize leading to poor page-split decisions later
in the build.
The memory management here is confusing and could stand to be
refactored, but for the moment it seems to be enough to fetch
the tuple size sooner. AFAICT the indtuples[Size] totals aren't
used in between these places; even if they were, the updated
values shouldn't be any worse to use. So just move the
incrementing of the totals up.
It's not very clear why our valgrind-using buildfarm animals
haven't noticed this problem, because the relevant code path
does seem to be exercised according to the code coverage report.
I think the reason that we didn't fix this bug after the first
report is that I'd wanted to try to understand that better.
However, now that it's been re-discovered let's just be pragmatic
and fix it already.
Original report by Alexander Lakhin (bug #16329),
later rediscovered by Egor Chindyaskin (bug #17874).
Patch by Alexander Lakhin (commentary by Pavel Borisov and me).
Back-patch to all supported branches.
Discussion: https://postgr.es/m/16329-7a6aa9b6fa1118a1@postgresql.org
Discussion: https://postgr.es/m/17874-63ca6c7ce42d2103@postgresql.org
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
find_composite_type_dependencies() ignored indexes, which is a poor
decision because an expression index could have a stored column of
a composite (or other container) type even when the underlying table
does not. Teach it to detect such cases and error out. We have to
work a bit harder than for other relations because the pg_depend entry
won't identify the specific index column of concern, but it's not much
new code.
This does not address bug #17872's original complaint that dropping
a column in such a type might lead to violations of the uniqueness
property that a unique index is supposed to ensure. That seems of
much less concern to me because it won't lead to crashes.
Per bug #17872 from Alexander Lakhin. Back-patch to all supported
branches.
Discussion: https://postgr.es/m/17872-d0fbb799dc3fd85d@postgresql.org
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
The nested-arrays code path in ExecEvalArrayExpr() used palloc to
allocate the result array, whereas every other array-creating function
has used palloc0 since 18c0b4ecc. This mostly works, but unused bits
past the end of the nulls bitmap may end up undefined. That causes
valgrind complaints with -DWRITE_READ_PARSE_PLAN_TREES, and could
cause planner misbehavior as cited in 18c0b4ecc. There seems no very
good reason why we should strive to avoid palloc0 in just this one case,
so fix it the easy way with s/palloc/palloc0/.
While looking at that I noted that we also failed to check for overflow
of "nbytes" and "nitems" while summing the sizes of the sub-arrays,
potentially allowing a crash due to undersized output allocation.
For "nbytes", follow the policy used by other array-munging code of
checking for overflow after each addition. (As elsewhere, the last
addition of the array's overhead space doesn't need an extra check,
since palloc itself will catch a value between 1Gb and 2Gb.)
For "nitems", there's no very good reason to sum the inputs at all,
since we can perfectly well use ArrayGetNItems' result instead of
ignoring it.
Per discussion of this bug, also remove redundant zeroing of the
nulls bitmap in array_set_element and array_set_slice.
Patch by Alexander Lakhin and myself, per bug #17858 from Alexander
Lakhin; thanks also to Richard Guo. These bugs are a dozen years old,
so back-patch to all supported branches.
Discussion: https://postgr.es/m/17858-8fd287fd3663d051@postgresql.org
|
| |
|
|
|
|
|
|
|
|
|
|
| |
We fail to apply updates and deletes when the REPLICA IDENTITY FULL is
used for the table having generated columns. We didn't use to ignore
generated columns while doing tuple comparison among the tuples from
the publisher and subscriber during apply of updates and deletes.
Author: Onder Kalaci
Reviewed-by: Shi yu, Amit Kapila
Backpatch-through: 12
Discussion: https://postgr.es/m/CACawEhVQC9WoofunvXg12aXtbqKnEgWxoRx3+v8q32AWYsdpGg@mail.gmail.com
|
| |
|
|
|
|
|
|
|
|
|
| |
We fail to apply updates and deletes when the REPLICA IDENTITY FULL is
used for the table having dropped columns. We didn't use to ignore dropped
columns while doing tuple comparison among the tuples from the publisher
and subscriber during apply of updates and deletes.
Author: Onder Kalaci, Shi yu
Reviewed-by: Amit Kapila
Discussion: https://postgr.es/m/CACawEhVQC9WoofunvXg12aXtbqKnEgWxoRx3+v8q32AWYsdpGg@mail.gmail.com
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
With unlucky timing and parallel_leader_participation=off (not the
default), PHJ could attempt to access per-batch shared state just as it
was being freed. There was code intended to prevent that by checking
for a cleared pointer, but it was racy. Fix, by introducing an extra
barrier phase. The new phase PHJ_BUILD_RUNNING means that it's safe to
access the per-batch state to find a batch to help with, and
PHJ_BUILD_DONE means that it is too late. The last to detach will free
the array of per-batch state as before, but now it will also atomically
advance the phase, so that late attachers can avoid the hazard. This
mirrors the way per-batch hash tables are freed (see phases
PHJ_BATCH_PROBING and PHJ_BATCH_DONE).
An earlier attempt to fix this (commit 3b8981b6, later reverted) missed
one special case. When the inner side is empty (the "empty inner
optimization), the build barrier would only make it to
PHJ_BUILD_HASHING_INNER phase before workers attempted to detach from
the hashtable. In that case, fast-forward the build barrier to
PHJ_BUILD_RUNNING before proceeding, so that our later assertions hold
and we can still negotiate who is cleaning up.
Revealed by build farm failures, where BarrierAttach() failed a sanity
check assertion, because the memory had been clobbered by dsa_free().
In non-assert builds, the result could be a segmentation fault.
Back-patch to all supported releases.
Author: Thomas Munro <thomas.munro@gmail.com>
Author: Melanie Plageman <melanieplageman@gmail.com>
Reported-by: Michael Paquier <michael@paquier.xyz>
Reported-by: David Geier <geidav.pg@gmail.com>
Tested-by: David Geier <geidav.pg@gmail.com>
Discussion: https://postgr.es/m/20200929061142.GA29096%40paquier.xyz
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Hash partitioning on an enum is problematic because the hash codes are
derived from the OIDs assigned to the enum values, which will almost
certainly be different after a dump-and-reload than they were before.
This means that some rows probably end up in different partitions than
before, causing restore to fail because of partition constraint
violations. (pg_upgrade dodges this problem by using hacks to force
the enum values to keep the same OIDs, but that's not possible nor
desirable for pg_dump.)
Users can work around that by specifying --load-via-partition-root,
but since that's a dump-time not restore-time decision, one might
find out the need for it far too late. Instead, teach pg_dump to
apply that option automatically when dealing with a partitioned
table that has hash-on-enum partitioning.
Also deal with a pre-existing issue for --load-via-partition-root
mode: in a parallel restore, we try to TRUNCATE target tables just
before loading them, in order to enable some backend optimizations.
This is bad when using --load-via-partition-root because (a) we're
likely to suffer deadlocks from restore jobs trying to restore rows
into other partitions than they came from, and (b) if we miss getting
a deadlock we might still lose data due to a TRUNCATE removing rows
from some already-completed restore job.
The fix for this is conceptually simple: just don't TRUNCATE if we're
dealing with a --load-via-partition-root case. The tricky bit is for
pg_restore to identify those cases. In dumps using COPY commands we
can inspect each COPY command to see if it targets the nominal target
table or some ancestor. However, in dumps using INSERT commands it's
pretty impractical to examine the INSERTs in advance. To provide a
solution for that going forward, modify pg_dump to mark TABLE DATA
items that are using --load-via-partition-root with a comment.
(This change also responds to a complaint from Robert Haas that
the dump output for --load-via-partition-root is pretty confusing.)
pg_restore checks for the special comment as well as checking the
COPY command if present. This will fail to identify the combination
of --load-via-partition-root and --inserts in pre-existing dump files,
but that should be a pretty rare case in the field. If it does
happen you will probably get a deadlock failure that you can work
around by not using parallel restore, which is the same as before
this bug fix.
Having done this, there seems no remaining reason for the alarmism
in the pg_dump man page about combining --load-via-partition-root
with parallel restore, so remove that warning.
Patch by me; thanks to Julien Rouhaud for review. Back-patch to
v11 where hash partitioning was introduced.
Discussion: https://postgr.es/m/1376149.1675268279@sss.pgh.pa.us
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Unfortunately it turns out that the logfile-only option added in b9f8d1cbad7
is only available in openldap starting in 2.6.
Luckily the option to control the log level (loglevel/-s) have been around for
much longer. As it turns out loglevel/-s only control what goes into syslog,
not what ends up in the file specified with 'logfile' and stderr.
While we currently are specifying 'logfile', nothing ends up in it, as the
option only controls debug messages, and we didn't set a debug level. The
debug level can only be configured on the commandline and also prevents
forking. That'd require larger changes, so this commit doesn't tackle that
issue.
Specify the syslog level when starting slapd using -s, as that allows to
prevent all syslog messages if one uses '0' instead of 'none', while loglevel
doesn't prevent the first message.
Discussion: https://postgr.es/m/20230311233708.3yjdbjkly2q4gq2j@awork3.anarazel.de
Backpatch: 11-
|
| |
|
|
|
|
|
|
|
|
| |
Until now the tests using slapd spammed syslog for every connection /
query. Use logfile-only to prevent syslog activity. Unfortunately that only
takes effect after logging the first message, but that's still much better
than the prior situation.
Discussion: https://postgr.es/m/20230311233708.3yjdbjkly2q4gq2j@awork3.anarazel.de
Backpatch: 11-
|
| |
|
|
|
|
|
|
|
|
|
| |
Further to commit 6a9229da, checking for NULL is now redundant. An "out
of memory" error would have been thrown already by palloc() and treated
as FATAL, so we can delete a few more lines.
Back-patch to all releases, like those other commits.
Reported-by: Tom Lane <tgl@sss.pgh.pa.us>
Discussion: https://postgr.es/m/4040668.1679013388%40sss.pgh.pa.us
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
gcc 12+ has complaints like the following:
../../../../../pgsql/src/backend/utils/adt/network.c: In function 'inetnot':
../../../../../pgsql/src/backend/utils/adt/network.c:1893:34: warning: writing 1 byte into a region of size 0 [-Wstringop-overflow=]
1893 | pdst[nb] = ~pip[nb];
| ~~~~~~~~~^~~~~~~~~~
../../../../../pgsql/src/include/utils/inet.h:27:23: note: at offset -1 into destination object 'ipaddr' of size 16
27 | unsigned char ipaddr[16]; /* up to 128 bits of address */
| ^~~~~~
../../../../../pgsql/src/include/utils/inet.h:27:23: note: at offset -1 into destination object 'ipaddr' of size 16
This is due to a compiler bug:
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=104986
It has been a year since the bug has been reported without getting fixed. As
the warnings are verbose and use of gcc 12 is becoming more common, it seems
worth working around the bug. Particularly because a simple reformulation of
the loop condition fixes the issue and isn't any less readable.
Author: Tom Lane <tgl@sss.pgh.pa.us>
Author: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/144536.1648326206@sss.pgh.pa.us
Backpatch: 11-
|
| |
|
|
|
|
|
|
|
|
|
| |
A comment was left behind claiming that we needed to use malloc() rather
than palloc() because the corresponding free would run in another
thread, but that's not true anymore. Remove that comment. And, with
the reason being gone, we might as well actually use palloc().
Back-patch to supported releases, like d41a178b.
Discussion: https://postgr.es/m/CA%2BhUKG%2BpdM9v3Jv4tc2BFx2jh_daY3uzUyAGBhtDkotEQDNPYw%40mail.gmail.com
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
Our waitpid() emulation didn't prevent a PID from being recycled by the
OS before the call to waitpid(). The postmaster could finish up
tracking more than one child process with the same PID, and confuse
them.
Fix, by moving the guts of pgwin32_deadchild_callback() into waitpid(),
so that resources are released synchronously. The process and PID
continue to exist until we close the process handle, which only happens
once we're ready to adjust our book-keeping of running children.
This seems to explain a couple of failures on CI. It had never been
reported before, despite the code being as old as the Windows port.
Perhaps Windows started recycling PIDs more rapidly, or perhaps timing
changes due to commit 7389aad6 made it more likely to break.
Thanks to Alexander Lakhin for analysis and Andres Freund for tracking
down the root cause.
Back-patch to all supported branches.
Reported-by: Andres Freund <andres@anarazel.de>
Discussion: https://postgr.es/m/20230208012852.bvkn2am4h4iqjogq%40awork3.anarazel.de
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
The band-aid applied in commit f0bedf3e4 turns out to still need
some work: it made sure we didn't set Np->last_relevant too small
(to the left of the decimal point), but it didn't prevent setting
it too large (off the end of the partially-converted string).
This could result in fetching data beyond the end of the allocated
space, which with very bad luck could cause a SIGSEGV, though
I don't see any hazard of interesting memory disclosure.
Per bug #17839 from Thiago Nunes. The bug's pretty ancient,
so back-patch to all supported versions.
Discussion: https://postgr.es/m/17839-aada50db24d7b0da@postgresql.org
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
The majority of error exit cases in json_lex_string() failed to
set lex->token_terminator, causing problems for the error context
reporting code: it would see token_terminator less than token_start
and do something more or less nuts. In v14 and up the end result
could be as bad as a crash in report_json_context(). Older
versions accidentally avoided that fate; but all versions produce
error context lines that are far less useful than intended,
because they'd stop at the end of the prior token instead of
continuing to where the actually-bad input is.
To fix, invent some macros that make it less notationally painful
to do the right thing. Also add documentation about what the
function is actually required to do; and in >= v14, add an assertion
in report_json_context about token_terminator being sufficiently
far advanced.
Per report from Nikolay Shaplov. Back-patch to all supported
versions.
Discussion: https://postgr.es/m/7332649.x5DLKWyVIX@thinkpad-pgpro
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
| |
check_agg_arguments_walker() supposed that it needn't descend into
the arguments of a lower-level aggregate function, but this is
just wrong in the presence of multiple levels of sub-select. The
oversight would lead to executor failures on queries that should
be rejected. (Prior to v11, they actually were rejected, thanks
to a "redundant" execution-time check.)
Per bug #17835 from Anban Company. Back-patch to all supported
branches.
Discussion: https://postgr.es/m/17835-4f29f3098b2d0ba4@postgresql.org
|
| |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |
The error cases for TLS and GSS encryption were inconsistent. After TLS
fails, the connection is marked as dead and follow-up calls of
PQconnectPoll() would return immediately, but GSS encryption was not
doing that, so the connection would still have been allowed to enter the
GSS handling code. This was handled incorrectly when gssencmode was set
to "require". "prefer" was working correctly, and this could not happen
under "disable" as GSS encryption would not be attempted.
This commit makes the error handling of GSS encryption on par with TLS
portion, fixing the case of gssencmode=require.
Reported-by: Jacob Champion
Author: Michael Paquier
Reviewed-by: Jacob Champion, Stephen Frost
Discussion: https://postgr.es/m/23787477-5fe1-a161-6d2a-e459f74c4713@timescale.com
Backpatch-through: 12
|
| |
|
|
|
|
|
|
|
|
|
| |
This was an omission in the original creation of the module.
Also slightly adjust some wording to avoid a double "is".
Backpatch the non-meson piece of this to release 12, where the module
was introduced.
Discussion: https://postgr.es/m/be869e1c-8e3f-4cde-8609-212c899cccf9@dunslane.net
|
