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connectors experimental galera main
fc33a0da543c...
fc33a0da543ca93573c72829da6044c368f70a66
Sergei Golubchik
MDEV-35254 Add get_current_thd() service function
eb0f3282ae8d...
eb0f3282ae8d1f3762c86d682dba99c892498049
Marko Mäkelä
MDEV-40063 Corruption due to race in SET GLOBAL innodb_log_archive=ON

There was a race condition between log_t::write_checkpoint() and
the execution of SET GLOBAL innodb_log_archive=ON (enabling log archiving).
We had wrongly allowed the concurrent execution of log_t::set_archive()
and log_t::write_checkpoint(). The result was that
log_sys.next_checkpoint_no was corrupted. This could have broken
crash recovery.

log_t::write_checkpoint(): When we are releasing log_sys.latch while
durably writing the checkpoint header block, assign log_sys.resize_log
to log_sys.log to inform other threads that a checkpoint is in progress.
Previously, we only did this when innodb_log_archive=ON holds.

log_t::resize_start(): Relax a debug assertion for the logic change.

Tested by: Matthias Leich
eaf4cde168ef...
eaf4cde168ef361ace67f90ecb8d0b955d137460
Vladislav Vaintroub
MDEV-39951 DENY feature does not work for EVENT privilege

Fix calculation of need_table_or_column_check in check_access(),
so it does not consider already denied bits on DB level.

Add a test case for events (provided by Ramesh Sivaraman)
e941e23ccabc...
e941e23ccabc850c3fffa34762a176959a357deb
PranavKTiwari
MDEV-35920: Fix assertion failure decimals == 0 in Item_func_mod::fix_length_and_dec_int
Hex hybrid literals (0x..) were incorrectly treated as string values during hybrid
expression aggregation (CASE/COALESCE/IF/LEAST/IFNULL), causing NOT_FIXED_DEC to
propagate into numeric contexts. This led to an assertion failure in MOD() which
requires decimals == 0 for integer arithmetic.

Fix ensures hex hybrid values retain string collation behavior but enforce numeric
semantics by setting decimals = 0 and unsigned_flag = true.

Add regression test for MOD() with hex in hybrid expressions
e413a86808a5...
e413a86808a505ee2bf9a9c0a1d12d8041e236d0
Georg Richter
Don't use ulong in mysql.h/mariadb_stmt.h
d51bd03e9942...
d51bd03e9942f474fb6a785c9e25979d774603f6
PranavKTiwari
MDEV-35920: Fix assertion failure decimals == 0 in Item_func_mod::fix_length_and_dec_int
Hex hybrid literals (0x..) were incorrectly treated as string values during hybrid
expression aggregation (CASE/COALESCE/IF/LEAST/IFNULL), causing NOT_FIXED_DEC to
propagate into numeric contexts. This led to an assertion failure in MOD() which
requires decimals == 0 for integer arithmetic.

Fix ensures hex hybrid values retain string collation behavior but enforce numeric
semantics by setting decimals = 0 and unsigned_flag = true.

Add regression test for MOD() with hex in hybrid expressions
d4834769ce57...
d4834769ce579d3e203ad891156a0ef68c22bcb0
PranavKTiwari
MDEV-30297 Server crash / assertion failure in Compare_identifiers::operator upon dropping period with empty name
Lex_cstring::streq() could invoke Compare_identifiers on default-constructed Lex_cstring objects (str == NULL, length == 0). Compare_identifiers assumes non-null strings and asserts in debug builds or crashes in non-debug builds. Guard against null string pointers in streq() before invoking the comparator.
c8f382faa795...
c8f382faa795c6e64dd3514586b2b8e191b57db3
drrtuy
disable sfinae-incomplete warning for DuckDB code.
c6e8dad6424d...
c6e8dad6424d363ca6c3a58e47a6c6903a231962
Daniel Black
MDEV-40040 XXH32/XXH3 NULL-correctness regression

MDEV-39661 removed the null checking of the arguments early. This worked
if the arguments to the function where known null to begin with.

args[0]->hash_val_str() can, on evaluation, change the null value of
args[0]. As such it always nees to be executed.

The hasher.finalize still needs to be called to free the memory (like
MDEV-39661) however a 0 result when null being set is required.

Tests by Roel Van de Paar

Co-Authored-By: Claude
befd7f6154bf...
befd7f6154bf6e8bffde761503f0b9e18562d074
Rex
MDEV-35565 Server crashes simplifying group by <subquery>

During optimization, we may call update_depend_map_for_order()
on a group by list containing an expression with an outer reference.
The table map for this outer reference will be collected by
Item_subselect::recalc_used_tables and used to return a depend_map.
This map will indicate the presence of tables not in this select and
can cause erroneous results, poor execution plans or crashes.
We update the class used to collect these bitmaps to check whether the
containing select_lex is applicable, and if not, set the OUTER_REF_TABLE_BIT
bit in the table map.
accf1a119ae3...
accf1a119ae35aa7cef929ca91c93e787a2373e1
Lawrin Novitsky
More of "use-of-uninitialized-value" use
  • codbc-linux-amd64-msan: build linux-connector_odbc failed -  stdio
9bca57e2f42d...
9bca57e2f42d540b781417c5dbacd71f6ba7b4b6
Vladislav Vaintroub
MDEV-40002 REVOKE DENY on table debug asserts with existing GRANT, without existing DENY

Fix handling of update_denies_in_user_table() inside replace_table_table()

replace_table_table is "special", and should return  -1 if  grant was
revoked, 1 if error, 0 if success. Whenever it is used, caller explicitly
checks for return code greater 0

It did however return -1 on all errors with denies. The debug assertion
that catches cases where my_error() is followed by my_ok() fired then.

This is now fixed. Added test cases for "REVOKE DENY on non-existing DENY
and existing GRANT" scenarios.
8710c2bc841a...
8710c2bc841a592710cdfe9e6bcc1f39bd13db54
PranavKTiwari
MDEV-30297 Server crash / assertion failure in Compare_identifiers::operator upon dropping period with empty name
Lex_cstring::streq() could invoke Compare_identifiers on default-constructed Lex_cstring objects (str == NULL, length == 0). Compare_identifiers assumes non-null strings and asserts in debug builds or crashes in non-debug builds. Guard against null string pointers in streq() before invoking the comparator.
8670cd9d7036...
8670cd9d703674884ce7b0929244e489b08f6f0a
Vladislav Vaintroub
MDEV-14443 DENY statement

Implements DENY/REVOKE DENY and associated tasks.
75f322abd5d3...
75f322abd5d37aa8dfa2bacaa5461b60b60a485a
Dearsh Oberoi
MDEV-35254 refactor: Make my_bit.h an independent header

Removed type aliases and macros defined in my_global.h from my_bit.h,
making it possible to include it in plugins or external code without
pulling in my_global.h
72e0f9c7006d...
72e0f9c7006ddae9f30dddf8e3e2c429bbb5fcbc
Daniel Black
MDEV-35462 Remove obsolete compiler version checks from RocksDB CMakeLists.txt (fix)

-fPIC was erronously removed in 526f0765b3f961803919ec2c47074c5e029acbfb. Replaced with the
POSITION_INDEPENDENT_CODE target property.
7083172c791b...
7083172c791bad76a947af768b579d1fd1258343
Vladislav Vaintroub
MDEV-39951 DENY feature does not work for EVENT privilege

Fix calculation of need_table_or_column_check in check_access(),
so it does not consider already denied bits on DB level.

Add a test case for events (provided by Ramesh Sivaraman)
6c8a37ff6dd6...
6c8a37ff6dd61d5913b9f96cf2374d1361c1a42b
Marko Mäkelä
WIP MDEV-39092: back up some non-InnoDB files
65d7828c6a2e...
65d7828c6a2e19300f2cc621b975882776b81a72
Daniel Black
MDEV-40043 Assertion in my_uca_hash_sort_utf8mb4 on SELECT XXH32(REGEXP_REPLACE...)

Some expressions are 0 length and appending nothing to a hash
is a no-op.
626b201fa9d8...
626b201fa9d8e65e5c549f6127fca7edb11a4453
Yuchen Pei
MDEV-40048 [to-squash] Allow trigger to work with range interval auto partitioning

When a range interval auto partitioned table is the target of a
trigger, the triggering statement is not necessarily one that would
cause the auto-creation of new partitions, so we need to account for
that
5900319c43c4...
5900319c43c44215eaf398291ba5caca688fe1ec
Marko Mäkelä
WIP MDEV-14992 BACKUP SERVER

This introduces a basic driver Sql_cmd_backup, storage engine interfaces,
and basic copying of InnoDB data files.

TODO: Complete the implementation of streaming backup
in GNU tar --format=oldgnu

backup_target: A structured data type to represent a target directory.
On Microsoft Windows, we must use directory paths because there is
no variant of CopyFileEx() that would work on file handles.

backup_sink: Wraps a per-thread output stream as well as storage engine
specific context.

handlerton::backup_start(), handlerton::backup_end(): Invoked at the
start or end of a backup phase, in the thread that executes a
BACKUP SERVER statement.

handlerton::backup_step(): A backup step that can be invoked from
multiple threads concurrently, between the execution of the corresponding
handlerton::backup_start() and handlerton::backup_end() of the same
phase.

copy_entire_file(): A file copying service for POSIX systems.

copy_file(): A sparse file-copying service for all systems.

InnoDB_backup::context: Backup context, attached to backup_sink
so that context can continue to exist between the time a
BACKUP SERVER releases all locks and another BACKUP SERVER starts
executing, with innodb_backup pointing to the new backup, while
the old backup is still being finished.

fil_space_t::write_or_backup: Keep track of in-flight page writes and
pending backup operation. We must not allow them concurrently, because
that could lead into torn pages in the backup.

fil_space_t::backup_end: The first page number that is not being backed up
(by default 0, to indicate that no backup is in progress).

fil_space_t::BACKUP_BATCH_SIZE: The number of preceding pages that will be
covered by fil_space_t::backup_end. This is the unit of "page range locking"
during InnoDB backup.

log_sys.backup: Whether BACKUP SERVER is in progress. The purpose of this
is to make BACKUP SERVER prevent the concurrent execution of
SET GLOBAL innodb_log_archive=OFF or SET GLOBAL innodb_log_file_size
when innodb_log_archive=OFF.

log_sys.archived_checkpoint: Keep track of the earliest available
checkpoint, corresponding to log_sys.archived_lsn. This reflects
SET GLOBAL innodb_log_recovery_start (which is settable now), for
incremental backup.

buf_flush_list_space(): Check for concurrent backup before writing each
page. This is inefficient, but this function may be invoked from multiple
threads concurrently, and it cannot be changed easily, especially for
fil_crypt_thread().
5655a2f8ae31...
5655a2f8ae315c79c138b11d065eb1c8867d0962
PranavKTiwari
MDEV-30297 Server crash / assertion failure in Compare_identifiers::operator upon dropping period with empty name
Lex_cstring_with_compare::streq() could invoke Compare_identifiers on default-constructed Lex_cstring objects (str == NULL, length == 0). Compare_identifiers assumes non-null strings and asserts in debug builds or crashes in non-debug builds. Guard against null string pointers in streq() before invoking the comparator.
4ec1ff493ea8...
4ec1ff493ea8da5867f9763b2ee4ef70684e4d80
drrtuy
chore: avoid building DuckDB at x86_32.
4c873e4f16d1...
4c873e4f16d1d4aaa007e7cbe9bf94dfa1f37005
Daniel Black
MDEV-39661 LSAN Detectable memory leak in XXH_malloc upon SHUTDOWN

my_hasher_xxh32() dynamiclly allocated memory, however when a NULL
was passed to the function, a return happened before hasher.finalize(),
which freed the required memory.

Thanks Roel Van de Paar for driving AI to do most of the analysis
that scoped our the other uses of my_hasher_xxh32 and my_hasher_xxh3
as safe.
4c5ca04fef1d...
4c5ca04fef1d76a487ae2553367f0e652db2ceff
Vladislav Vaintroub
MDEV-40002 REVOKE DENY on table debug asserts with existing GRANT, without existing DENY

Fix handling of update_denies_in_user_table() inside replace_table_table()

replace_table_table is "special", and should return  -1 if  grant was
revoked, 1 if error, 0 if success. Whenever it is used, caller explicitly
checks for return code greater 0

It did however return -1 on all errors with denies. The debug assertion
that catches cases where my_error() is followed by my_ok() fired then.

This is now fixed. Added test cases for "REVOKE DENY on non-existing DENY
and existing GRANT" scenarios.
479b7efb23ad...
479b7efb23ad477c5a4c3343fd9fcef964246112
Vladislav Vaintroub
MDEV-14443 DENY statement

Implements DENY/REVOKE DENY and associated tasks.
41d3dbb0311e...
41d3dbb0311e8e45b1d23df535959017c7ba17f1
Vladislav Vaintroub
MDEV-40028 Assertion `rights.allow_bits() == merged->cols' failed

Fixed mismatched memroot in new operator, in apply_deny_column.

MDEV-40014 Crash in SHOW GRANTS FOR user after REVOKE

Fixed premature my_hash_reset in update_role_columns, should not be
done if only DENYs are present

Also fixed unintended GRANT on column privileges when DENY should be
applied.
3f92cdfee651...
3f92cdfee6510030d5bf1c64e3773ff5250af857
Vladislav Vaintroub
MDEV-40028 Assertion `rights.allow_bits() == merged->cols' failed

Fixed mismatched memroot in new operator, in apply_deny_column.

MDEV-40014 Crash in SHOW GRANTS FOR user after REVOKE

Fixed premature my_hash_reset in update_role_columns, should not be
done if only DENYs are present

Also fixed unintended GRANT on column privileges when DENY should be
applied.
2caa44e08ac0...
2caa44e08ac077b158f4f0e54a80b6025c933ccd
Sergei Golubchik
MDEV-32362 post-review changes

* don't handle generated columns specially in --xml mode
* test header must be MDEV summary
* add test version markers
* add a test for generated/invisible mix
2a5c76af21d4...
2a5c76af21d4e92dba990f23310639563b736317
PranavKTiwari
MDEV-38988: Assertion failure in Protocol::end_statement or lack of warning upon query with INTERSECT and LIMIT ROWS EXAMINED
LIMIT ROWS EXAMINED sets ABORT_QUERY, which is a recoverable stop condition.
Previously saved_error triggered premature goto err in UNION/EXCEPT/INTERSECT execution,
skipping fake_select and breaking statement finalization.

Skip fatal error handling when ABORT_QUERY is set to allow normal warning-based
partial result completion.
29a72e2c48b3...
29a72e2c48b39875f1099c962f43a96af7471dc9
Thirunarayanan Balathandayuthapani
MDEV-39706  Assertion `!thd || !coordinator_thd' failed

Problem:
========
  - This assert was introduced in commit
0152c617e80ccf3f33d3ea4b50c17d5f588613b1 (MDEV-39261), which sets
coordinator_thd in clone_oldest_view() and resets it to nullptr in
batch_cleanup() at the end of the batch.
When innodb_trx_purge_view_update_only_debug is enabled, InnoDB fail
to reset coordinator_thd. As a result, InnoDB fails with assert in
next batch

Solution:
========
trx_purge(): Reset coordinator_thd to nullptr when
innodb_trx_purge_view_update_only_debug is enabled.
210ae62c5cbd...
210ae62c5cbd93d3f32d5a8005d8eea2a52fadc4
monthdev
MDEV-38180 Add XXH32() and XXH3() SQL functions

MariaDB supports XXH hash algorithms for KEY partitioning, but there is
no SQL interface for computing these hashes directly.

Add XXH32() and XXH3() scalar functions for long string data types.
Reject non-string argument data types with
ER_ILLEGAL_PARAMETER_DATA_TYPE_FOR_OPERATION, while preserving NULL
handling. Hash string values through the charset-aware Hasher path.

Register the functions and add MTR coverage for string literals, NULL,
collation-sensitive comparisons, illegal non-string arguments, and KEY
partitioning distribution for supported string columns.

Reviewed-by: Yuchen Pei <[email protected]>
1d1629769c7c...
1d1629769c7cd20741d5b92a2387e2a0fa5fce30
Raghunandan Bhat
MDEV-39450: Memory corruption: overlapping memory ranges in `Field_longstr::compress` on UPDATE of compressed column

Problem:
  Values shorter than `column_compression_threshold` (default 100) are
  stored uncompressed. Reading such a column returns a pointer into that
  buffer rather than a copy.

  When the new value is a substring of the column that aliases this
  buffer at a non-zero offset, e.g. `RIGHT(c,n)` or `SUBSTRING(c,n)`,
  the source and destination overlap, and the `memcpy()` in the "store
  uncompressed" path copies overlapping regions, which is undefined
  behaviour.

Fix:
  Replace `memcpy` with `memmove` to avoid copying between overlapping
  memory regions.
1bc5d9ef7591...
1bc5d9ef759150b45eed177676f2766d95808bb5
Fariha Shaikh
MDEV-32362 Handle generated columns in mariadb-dump INSERT statements

Currently, generated column names and values are present in INSERT
statements created by the dump tool. While this doesn't break
restorability, it is unnecessary as values for generated columns are
calculated based on other column values and need not be explicitly
inserted.

Modify mariadb-dump to handle generated columns in INSERT statements:

- In default mode, generated column values are replaced with DEFAULT,
  preserving the user's chosen insert style.
- When --complete-insert is enabled (either explicitly or due to
  INVISIBLE columns), generated columns are omitted entirely from
  the column list and values.

The server computes the generated column values automatically in
both cases.

All new code of the whole pull request, including one or several files
that are either new files or modified ones, are contributed under the
BSD-new license. I am contributing on behalf of my employer Amazon Web
Services, Inc.
1a9fc72b55b0...
1a9fc72b55b048e99f02c658f966eb79c679f245
Sergei Golubchik
MDEV-35254 post-review fixes

* reduced PARSEC_ITERATIONS_MAX because PKCS5_PBKDF2_HMAC() takes
  a signed int
* instead of checking for '0'..'L' range (which includes punctuation,
  check for the valid result of base62_to_uchar()
* add a connection test with non-default parsec_iterations
16907b9427d9...
16907b9427d988cebb0f0d8b0c8730cbd4c926bb
Dearsh Oberoi
MDEV-35254 Make iterations count configurable in PARSEC plugin

This patch adds a global and session level plugin variable
parsec_iterations to define the number of iterations to be
used when generating the key corresponding to the password.
It has a default value, lower and upper bounds.
0cb2cc959eb4...
0cb2cc959eb4ecaed42deadb5eb93e13dd6835e3
Dmitry Shulga
MDEV-40004: Server crashes in sp_head::register_instr_mem_root_for_deallocation upon shutdown

n shutdown server could crash in case triggers executed during server run
and some of triggers instructions were re-compiled.

The crash is caused by attempt to allocate a memory for storing pointers
on mem_roots used for memory allocation taken place on re-parsing failing
trigger's statements. The reason of crash is dereferencing of nullptr
returning by the function current_thd().

To fix the issue, use dummy THD on shutdown the table definition cache.
tdc_start_shutdown() is solely invoked from the function clean_up()
but the later is called from many places around the source code, not only
from mysql_main(), particularly clean_up() is called from unireg_abort().
Therefore, the extra argument added into the signature of the function
cleanup() to allow explicit request of use dummy THD on shutdown the table
definition cache.
0670c4a1333e...
0670c4a1333e0b8e7263e4b97fc9ddcd01267ba2
Raghunandan Bhat
MDEV-39450: Memory corruption: overlapping memory ranges in `Field_longstr::compress` on UPDATE of compressed column

Problem:
  Values shorter than `column_compression_threshold` (default 100) are
  stored uncompressed. Reading such a column returns a pointer into that
  buffer rather than a copy.

  When the new value is a substring of the column that aliases this
  buffer at a non-zero offset, e.g. `RIGHT(c,n)` or `SUBSTRING(c,n)`,
  the source and destination overlap, and the `memcpy()` in the "store
  uncompressed" path copies overlapping regions, which is undefined
  behaviour.

Fix:
  Replace `memcpy` with `memmove` to avoid copying between overlapping
  memory regions.
01095c837679...
01095c8376799855c0cf8038b5490228302a3dd9
Marko Mäkelä
MDEV-40063 Corruption due to race in SET GLOBAL innodb_log_archive=ON

There was a race condition between log_t::write_checkpoint() and
the execution of SET GLOBAL innodb_log_archive=ON (enabling log archiving).
We had wrongly allowed the concurrent execution of log_t::set_archive()
and log_t::write_checkpoint(). The result was that
log_sys.next_checkpoint_no was corrupted. This could have broken
crash recovery.

log_t::write_checkpoint(): When we are releasing log_sys.latch while
durably writing the checkpoint header block, assign log_sys.resize_log
to log_sys.log to inform other threads that a checkpoint is in progress.
Previously, we only did this when innodb_log_archive=ON holds.

log_t::resize_start(): Relax a debug assertion for the logic change.

Tested by: Matthias Leich
BuildBot (0.8.9) working for the MariaDB project.
Page built: Thu 18 Jun 2026 10:08:05 (UTC)