diff --git a/CMakeLists.txt b/CMakeLists.txt
index c6a6715f6fe..6a4b8d18651 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -123,11 +123,13 @@ FOREACH(_base
   ENDIF()
 ENDFOREACH()
 
+IF(NOT RPM AND NOT DEB)
 FOREACH(tool gtar tar)
  STRING(TOUPPER ${tool}  TOOL)
  FIND_PROGRAM(${TOOL}_EXECUTABLE ${tool} DOC "path to the executable")
  MARK_AS_ADVANCED(${TOOL}_EXECUTABLE)
 ENDFOREACH()
+ENDIF()
 
 FIND_PACKAGE(Git)
 
diff --git a/cmake/FindGit.cmake b/cmake/FindGit.cmake
new file mode 100644
index 00000000000..8178b614a3e
--- /dev/null
+++ b/cmake/FindGit.cmake
@@ -0,0 +1,13 @@
+if(GIT_EXECUTABLE)
+  set(GIT_FOUND TRUE)
+  return()
+endif()
+if(DEFINED GIT_EXECUTABLE)
+  set(GIT_FOUND FALSE)
+  return()
+endif()
+
+set(orig_CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH})
+unset(CMAKE_MODULE_PATH)
+include(FindGit)
+set(CMAKE_MODULE_PATH ${orig_CMAKE_MODULE_PATH})
diff --git a/cmake/FindJNI.cmake b/cmake/FindJNI.cmake
index fb2f4801a70..12305d7c86d 100644
--- a/cmake/FindJNI.cmake
+++ b/cmake/FindJNI.cmake
@@ -1,4 +1,9 @@
+if(JAVA_AWT_LIBRARY)
+  set(JNI_FOUND TRUE)
+  return()
+endif()
 if(DEFINED JAVA_AWT_LIBRARY)
+  set(JNI_FOUND FALSE)
   return()
 endif()
 
diff --git a/cmake/FindJava.cmake b/cmake/FindJava.cmake
index 95bbf8682cd..714f56b1f72 100644
--- a/cmake/FindJava.cmake
+++ b/cmake/FindJava.cmake
@@ -1,4 +1,9 @@
+if(Java_JAVA_EXECUTABLE)
+  set(JAVA_FOUND TRUE)
+  return()
+endif()
 if(DEFINED Java_JAVA_EXECUTABLE)
+  set(JAVA_FOUND FALSE)
   return()
 endif()
 
diff --git a/cmake/build_configurations/mysql_release.cmake b/cmake/build_configurations/mysql_release.cmake
index ed3b702b817..fc90529a8b5 100644
--- a/cmake/build_configurations/mysql_release.cmake
+++ b/cmake/build_configurations/mysql_release.cmake
@@ -85,6 +85,12 @@ ENDIF()
 
 SET(WITH_INNODB_SNAPPY OFF CACHE STRING "")
 SET(WITH_NUMA 0 CACHE BOOL "")
+SET(CPU_LEVEL1_DCACHE_LINESIZE 0)
+
+IF(NOT EXISTS ${CMAKE_SOURCE_DIR}/.git)
+  SET(GIT_EXECUTABLE GIT_EXECUTABLE-NOTFOUND CACHE FILEPATH "")
+ENDIF()
+
 IF(WIN32)
   SET(INSTALL_MYSQLTESTDIR "" CACHE STRING "")
   SET(INSTALL_SQLBENCHDIR  "" CACHE STRING "")
diff --git a/cmake/cpack_rpm.cmake b/cmake/cpack_rpm.cmake
index f64d16918d2..0f1aafe388d 100644
--- a/cmake/cpack_rpm.cmake
+++ b/cmake/cpack_rpm.cmake
@@ -125,8 +125,6 @@ SET(ignored
   "%ignore ${CMAKE_INSTALL_PREFIX}/share/man"
   "%ignore ${CMAKE_INSTALL_PREFIX}/share/man/man1"
   "%ignore ${CMAKE_INSTALL_PREFIX}/share/man/man8"
-  "%ignore ${CMAKE_INSTALL_PREFIX}/share/man/man1*"
-  "%ignore ${CMAKE_INSTALL_PREFIX}/share/man/man8*"
   "%ignore ${CMAKE_INSTALL_PREFIX}/share/pkgconfig"
   )
 
diff --git a/cmake/cpu_info.cmake b/cmake/cpu_info.cmake
index 1acfad5897f..2abeb5e12c1 100644
--- a/cmake/cpu_info.cmake
+++ b/cmake/cpu_info.cmake
@@ -15,6 +15,8 @@
 
 # Symbols with information about the CPU.
 
+IF(NOT DEFINED CPU_LEVEL1_DCACHE_LINESIZE)
+
 IF(CMAKE_SYSTEM_NAME MATCHES "Darwin")
   FIND_PROGRAM(SYSCTL sysctl)
   MARK_AS_ADVANCED(SYSCTL)
@@ -37,3 +39,5 @@ ELSE()
       )
   ENDIF()
 ENDIF()
+
+ENDIF()
diff --git a/dbug/CMakeLists.txt b/dbug/CMakeLists.txt
index d45401be290..d938788aded 100644
--- a/dbug/CMakeLists.txt
+++ b/dbug/CMakeLists.txt
@@ -30,7 +30,7 @@ IF(NOT CMAKE_CROSSCOMPILING OR DEFINED CMAKE_CROSSCOMPILING_EMULATOR)
   TARGET_LINK_LIBRARIES(factorial dbug)
 ENDIF()
 
-IF(NOT WIN32 AND NOT CMAKE_GENERATOR MATCHES Xcode)
+IF(NOT WIN32 AND NOT CMAKE_GENERATOR MATCHES Xcode AND NOT RPM AND NOT DEB)
   FIND_PROGRAM(GROFF groff)
   FIND_PROGRAM(NROFF nroff)
   MARK_AS_ADVANCED(GROFF)
diff --git a/debian/mariadb-plugin-connect.install b/debian/mariadb-plugin-connect.install
index e2500269438..6cf529163cd 100644
--- a/debian/mariadb-plugin-connect.install
+++ b/debian/mariadb-plugin-connect.install
@@ -1,2 +1,6 @@
 etc/mysql/mariadb.conf.d/connect.cnf
 usr/lib/mysql/plugin/ha_connect.so
+usr/share/mysql/Mongo2.jar
+usr/share/mysql/Mongo3.jar
+usr/share/mysql/JavaWrappers.jar
+usr/share/mysql/JdbcInterface.jar
diff --git a/mysql-test/main/ctype_filename.result b/mysql-test/main/ctype_filename.result
index 2eee5d2888e..aaccea91793 100644
--- a/mysql-test/main/ctype_filename.result
+++ b/mysql-test/main/ctype_filename.result
@@ -22,21 +22,50 @@ SELECT @a:=CONVERT('aя' USING filename) AS `@a`, BINARY @a, REVERSE(@a), HEX(@a
 @a	BINARY @a	REVERSE(@a)	HEX(@a)	HEX(REVERSE(@a))
 aя	a@r1	яa	61407231	40723161
 #
+# Beginning of 10.2 test.
+#
+# MDEV-25462: Assertion `m_status == DA_ERROR || m_status == DA_OK ||
+# m_status == DA_OK_BULK' failed in Diagnostics_area::message from
+# get_schema_tables_record
+#
+SELECT @@character_set_client, @@character_set_connection, @@character_set_results;
+@@character_set_client	@@character_set_connection	@@character_set_results
+utf8	utf8	utf8
+SET @old_character_set_client= @@character_set_client;
+SET @old_character_set_connection= @@character_set_connection;
+SET @old_character_set_results= @@character_set_results;
+SET NAMES 'filename';
+ERROR 42000: Variable 'character_set_client' can't be set to the value of 'filename'
+SELECT @@character_set_client, @@character_set_connection, @@character_set_results;
+@@character_set_client	@@character_set_connection	@@character_set_results
+utf8	utf8	utf8
+CREATE VIEW v2 AS SELECT 1;
+SHOW TABLE STATUS;
+Name	Engine	Version	Row_format	Rows	Avg_row_length	Data_length	Max_data_length	Index_length	Data_free	Auto_increment	Create_time	Update_time	Check_time	Collation	Checksum	Create_options	Comment	Max_index_length	Temporary
+v2	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	NULL	VIEW	NULL	NULL
+DROP VIEW v2;
+SET @@character_set_client= @old_character_set_client;
+SET @@character_set_connection= @old_character_set_connection;
+SET @@character_set_results= @old_character_set_results;
+#
+# End of 10.2 test
+#
+#
 # MDEV-22022 Various mangled SQL statements will crash 10.3 to 10.5 debug builds
 #
 SET CHARACTER_SET_CLIENT=17;
+ERROR 42000: Variable 'character_set_client' can't be set to the value of '17'
 SELECT doc.`Children`.0 FROM t1;
-ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '?Children??0?FROM?t1' at line 1
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '.0 FROM t1' at line 1
 SET NAMES latin1;
-#
-# Start of 10.5 tests
-#
+# End of 10.3 tests
 #
 # MDEV-22043 Special character leads to assertion in my_wc_to_printable_generic on 10.5.2 (debug)
 #
 SET NAMES filename;
+ERROR 42000: Variable 'character_set_client' can't be set to the value of 'filename'
 EXECUTE IMMEDIATE _latin1 0x01;
-ERROR 42000: You@0020have@0020an@0020error@0020in@0020your@0020SQL@0020syntax@003b@0020check@0020the@0020manual@0020that@0020corresponds@0020to@0020your@0020MariaDB@0020server@0020version@0020for@0020the@0020right@0020syntax@0020to@0020use@0020near@0020@0027@005c0001@0027@0020at@0020line@00201
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near '\0001' at line 1
 SET NAMES utf8;
 #
 # MDEV-23435 Functions do not convert numbers to character_set_results
@@ -103,6 +132,4 @@ a	c
 @002d1	@002d1
 DROP TABLE t1;
 SET NAMES utf8;
-#
 # End of 10.5 tests
-#
diff --git a/mysql-test/main/ctype_filename.test b/mysql-test/main/ctype_filename.test
index 17ab71e3985..ba42d1a2807 100644
--- a/mysql-test/main/ctype_filename.test
+++ b/mysql-test/main/ctype_filename.test
@@ -28,25 +28,49 @@ select convert(convert(',' using filename) using binary);
 SET NAMES utf8;
 SELECT @a:=CONVERT('aя' USING filename) AS `@a`, BINARY @a, REVERSE(@a), HEX(@a), HEX(REVERSE(@a));
 
+--echo #
+--echo # Beginning of 10.2 test.
+--echo #
+--echo # MDEV-25462: Assertion `m_status == DA_ERROR || m_status == DA_OK ||
+--echo # m_status == DA_OK_BULK' failed in Diagnostics_area::message from
+--echo # get_schema_tables_record
+--echo #
+
+SELECT @@character_set_client, @@character_set_connection, @@character_set_results;
+SET @old_character_set_client= @@character_set_client;
+SET @old_character_set_connection= @@character_set_connection;
+SET @old_character_set_results= @@character_set_results;
+--error ER_WRONG_VALUE_FOR_VAR
+SET NAMES 'filename';
+SELECT @@character_set_client, @@character_set_connection, @@character_set_results;
+CREATE VIEW v2 AS SELECT 1;
+SHOW TABLE STATUS;
+DROP VIEW v2;
+SET @@character_set_client= @old_character_set_client;
+SET @@character_set_connection= @old_character_set_connection;
+SET @@character_set_results= @old_character_set_results;
+
+--echo #
+--echo # End of 10.2 test
+--echo #
 
 --echo #
 --echo # MDEV-22022 Various mangled SQL statements will crash 10.3 to 10.5 debug builds
 --echo #
 
+--error ER_WRONG_VALUE_FOR_VAR
 SET CHARACTER_SET_CLIENT=17;
 --error ER_PARSE_ERROR
 SELECT doc.`Children`.0 FROM t1;
 SET NAMES latin1;
 
-
---echo #
---echo # Start of 10.5 tests
---echo #
+--echo # End of 10.3 tests
 
 --echo #
 --echo # MDEV-22043 Special character leads to assertion in my_wc_to_printable_generic on 10.5.2 (debug)
 --echo #
 
+--error ER_WRONG_VALUE_FOR_VAR
 SET NAMES filename;
 --error ER_PARSE_ERROR
 EXECUTE IMMEDIATE _latin1 0x01;
@@ -114,7 +138,4 @@ SET NAMES utf8;
 
 --enable_ps_protocol
 
-
---echo #
 --echo # End of 10.5 tests
---echo #
diff --git a/mysql-test/main/mysqld--help.result b/mysql-test/main/mysqld--help.result
index 141ef94ad59..7b0ce27ead3 100644
--- a/mysql-test/main/mysqld--help.result
+++ b/mysql-test/main/mysqld--help.result
@@ -1566,7 +1566,7 @@ lc-messages-dir MYSQL_SHAREDIR/
 lc-time-names en_US
 local-infile TRUE
 lock-wait-timeout 86400
-log-bin (No default value)
+log-bin foo
 log-bin-compress FALSE
 log-bin-compress-min-len 256
 log-bin-index (No default value)
diff --git a/mysql-test/main/mysqld--help.test b/mysql-test/main/mysqld--help.test
index 4405b198951..f918670d319 100644
--- a/mysql-test/main/mysqld--help.test
+++ b/mysql-test/main/mysqld--help.test
@@ -13,7 +13,7 @@
 # force symbolic-links=0 (valgrind build has a different default)
 #
 
-exec $MYSQLD_BOOTSTRAP_CMD --symbolic-links=0 --lower-case-table-names=1 --help --verbose > $MYSQL_TMP_DIR/mysqld--help.txt 2>&1;
+exec $MYSQLD_BOOTSTRAP_CMD --symbolic-links=0 --log-bin=foo --lower-case-table-names=1 --help --verbose > $MYSQL_TMP_DIR/mysqld--help.txt 2>&1;
 
 # The inline perl code below will copy $MYSQL_TMP_DIR/mysqld--help.txt
 # to output, but filter away some variable stuff (e.g. paths).
diff --git a/mysql-test/main/subselect4.result b/mysql-test/main/subselect4.result
index 3bfb755120b..7b97f499768 100644
--- a/mysql-test/main/subselect4.result
+++ b/mysql-test/main/subselect4.result
@@ -2721,7 +2721,15 @@ id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
 SELECT a FROM t1 WHERE (a, a) IN (SELECT 1, 2) AND a = (SELECT MIN(b) FROM t2);
 a
 DROP TABLE t1,t2;
-# End of 10.2 tests
+#
+# MDEV-22462: Item_in_subselect::create_single_in_to_exists_cond(JOIN *, Item **, Item **): Assertion `false' failed.
+#
+select 1 from dual where 1 in (select 5 from dual where 1);
+1
+create table t1 (a int);
+insert into t1 values (1),(2),(3);
+update t1 set a = 2 where a in (select a from dual where a = a);
+drop table t1;
 #
 # MDEV-18335: Assertion `!error || error == 137' failed in subselect_rowid_merge_engine::init
 #
@@ -2848,6 +2856,17 @@ INSERT INTO t2 VALUES (3),(4);
 SELECT 1 IN (SELECT (SELECT a FROM t1) AS x FROM t2 GROUP BY x);
 ERROR 21000: Subquery returns more than 1 row
 drop table t1,t2;
+#
+# MDEV-25629: Crash in get_sort_by_table() in subquery with order by having outer ref
+#
+CREATE TABLE t1 (i1 int);
+insert into t1 values (1),(2);
+SELECT 1
+FROM (t1 JOIN t1 AS ref_t1 ON
+(t1.i1 > (SELECT ref_t1.i1 AS c0 FROM t1 b ORDER BY -c0)));
+ERROR 21000: Subquery returns more than 1 row
+DROP TABLE t1;
+# End of 10.2 tests
 # End of 10.3 tests
 #
 # MDEV-19134: EXISTS() slower if ORDER BY is defined
diff --git a/mysql-test/main/subselect4.test b/mysql-test/main/subselect4.test
index a1a4108de37..2f65db875f8 100644
--- a/mysql-test/main/subselect4.test
+++ b/mysql-test/main/subselect4.test
@@ -2236,7 +2236,17 @@ SELECT a FROM t1 WHERE (a, a) IN (SELECT 1, 2) AND a = (SELECT MIN(b) FROM t2);
 
 DROP TABLE t1,t2;
 
---echo # End of 10.2 tests
+--echo #
+--echo # MDEV-22462: Item_in_subselect::create_single_in_to_exists_cond(JOIN *, Item **, Item **): Assertion `false' failed.
+--echo #
+
+select 1 from dual where 1 in (select 5 from dual where 1);
+
+create table t1 (a int);
+insert into t1 values (1),(2),(3);
+
+update t1 set a = 2 where a in (select a from dual where a = a);
+drop table t1;
 
 --echo #
 --echo # MDEV-18335: Assertion `!error || error == 137' failed in subselect_rowid_merge_engine::init
@@ -2355,6 +2365,21 @@ INSERT INTO t2 VALUES (3),(4); # Optional, fails either way
 SELECT 1 IN (SELECT (SELECT a FROM t1) AS x FROM t2 GROUP BY x);
 drop table t1,t2;
 
+--echo #
+--echo # MDEV-25629: Crash in get_sort_by_table() in subquery with order by having outer ref
+--echo #
+CREATE TABLE t1 (i1 int);
+insert into t1 values (1),(2);
+
+--error ER_SUBQUERY_NO_1_ROW
+SELECT 1
+FROM (t1 JOIN t1 AS ref_t1 ON
+	(t1.i1 > (SELECT ref_t1.i1 AS c0 FROM t1 b ORDER BY -c0)));
+
+DROP TABLE t1;
+
+--echo # End of 10.2 tests
+
 --echo # End of 10.3 tests
 
 --echo #
diff --git a/mysql-test/suite/binlog/r/binlog_admin_cmd_kill.result b/mysql-test/suite/binlog/r/binlog_admin_cmd_kill.result
index a2eb7ee5c0a..d9bfead8dd1 100644
--- a/mysql-test/suite/binlog/r/binlog_admin_cmd_kill.result
+++ b/mysql-test/suite/binlog/r/binlog_admin_cmd_kill.result
@@ -20,7 +20,7 @@ master-bin.000001	#	Query	#	#	use `test`; CREATE TABLE t1 (f INT) ENGINE=INNODB
 master-bin.000001	#	Gtid	#	#	GTID #-#-#
 master-bin.000001	#	Query	#	#	use `test`; CREATE TABLE t2 (f INT) ENGINE=INNODB
 DROP TABLE t1,t2;
-FLUSH LOGS;
+RESET MASTER;
 #
 # Kill OPTIMIZE command after table modification
 #
diff --git a/mysql-test/suite/binlog/t/binlog_admin_cmd_kill.test b/mysql-test/suite/binlog/t/binlog_admin_cmd_kill.test
index 9b248097ae2..e2397f0eab8 100644
--- a/mysql-test/suite/binlog/t/binlog_admin_cmd_kill.test
+++ b/mysql-test/suite/binlog/t/binlog_admin_cmd_kill.test
@@ -56,7 +56,7 @@ SET debug_sync = 'reset';
 --source include/show_binlog_events.inc
 DROP TABLE t1,t2;
 
-FLUSH LOGS;
+RESET MASTER;
 
 --echo #
 --echo # Kill OPTIMIZE command after table modification
@@ -81,6 +81,9 @@ eval KILL $thd_id;
 SET debug_sync = 'reset';
 --disconnect con1
 
+--let $wait_binlog_event= OPTIMIZE
+--source include/wait_for_binlog_event.inc
+
 DROP TABLE t1,t2;
 let $binlog_file= query_get_value(SHOW MASTER STATUS, File, 1);
 FLUSH LOGS;
diff --git a/mysql-test/suite/galera/disabled.def b/mysql-test/suite/galera/disabled.def
index 38ce0bd0e1d..e5573bd4409 100644
--- a/mysql-test/suite/galera/disabled.def
+++ b/mysql-test/suite/galera/disabled.def
@@ -42,11 +42,11 @@ galera_var_notify_cmd : MDEV-21905 Galera test galera_var_notify_cmd causes hang
 galera_var_reject_queries : assertion in inline_mysql_socket_send
 galera_var_replicate_myisam_on : MDEV-24062 Galera test failure on galera_var_replicate_myisam_on
 galera_var_retry_autocommit: MDEV-18181 Galera test failure on galera.galera_var_retry_autocommit
-#galera_wan : MDEV-17259 Test failure on galera.galera_wan
 mysql-wsrep#198 : MDEV-24446: galera.mysql-wsrep#198 MTR failed: query 'reap' failed: 2000: Unknown MySQL error
 partition : MDEV-19958 Galera test failure on galera.partition
 query_cache: MDEV-15805 Test failure on galera.query_cache
-#sql_log_bin : MDEV-21491 galera.sql_log_bin
 versioning_trx_id: MDEV-18590: galera.versioning_trx_id: Test failure: mysqltest: Result content mismatch
 galera_wsrep_provider_unset_set: wsrep_provider is read-only for security reasons
 pxc-421: wsrep_provider is read-only for security reasons
+
+MDEV-25562: MDEV-25562 FIXME: lock wait timeout exceeded
diff --git a/mysql-test/suite/galera/r/MDEV-25562.result b/mysql-test/suite/galera/r/MDEV-25562.result
new file mode 100644
index 00000000000..b0d77af374b
--- /dev/null
+++ b/mysql-test/suite/galera/r/MDEV-25562.result
@@ -0,0 +1,16 @@
+connection node_2;
+connection node_1;
+SET SESSION WSREP_ON=0;
+FLUSH TABLES WITH READ LOCK AND DISABLE CHECKPOINT;
+SET SESSION WSREP_ON=1;
+UNLOCK TABLES;
+SET GLOBAL wsrep_ignore_apply_errors=1;
+CREATE TABLE t1 (a CHAR(1)) engine=innodb;
+CREATE TABLE t1 (a CHAR(1)) engine=innodb;
+ERROR 42S01: Table 't1' already exists
+SHOW PROCEDURE STATUS WHERE db = 'test';
+Db	Name	Type	Definer	Modified	Created	Security_type	Comment	character_set_client	collation_connection	Database Collation
+SET GLOBAL read_only=1;
+SET GLOBAL wsrep_ignore_apply_errors=DEFAULT;
+SET GLOBAL read_only=DEFAULT;
+DROP TABLE t1;
diff --git a/mysql-test/suite/galera/t/MDEV-25562.test b/mysql-test/suite/galera/t/MDEV-25562.test
new file mode 100644
index 00000000000..01729936b08
--- /dev/null
+++ b/mysql-test/suite/galera/t/MDEV-25562.test
@@ -0,0 +1,23 @@
+#
+# MDEV-25562 Assertion `pause_seqno_.is_undefined() == false' failed in void wsrep::server_state::resume()
+#
+
+--source include/galera_cluster.inc
+--source include/have_innodb.inc
+
+SET SESSION WSREP_ON=0;
+FLUSH TABLES WITH READ LOCK AND DISABLE CHECKPOINT;
+SET SESSION WSREP_ON=1;
+UNLOCK TABLES;
+
+SET GLOBAL wsrep_ignore_apply_errors=1;
+CREATE TABLE t1 (a CHAR(1)) engine=innodb;
+--error ER_TABLE_EXISTS_ERROR
+CREATE TABLE t1 (a CHAR(1)) engine=innodb;
+SHOW PROCEDURE STATUS WHERE db = 'test';
+SET GLOBAL read_only=1;
+
+SET GLOBAL wsrep_ignore_apply_errors=DEFAULT;
+SET GLOBAL read_only=DEFAULT;
+DROP TABLE t1;
+
diff --git a/mysql-test/suite/innodb_fts/r/innodb-fts-ddl.result b/mysql-test/suite/innodb_fts/r/innodb-fts-ddl.result
index b50bf047265..a64086c9802 100644
--- a/mysql-test/suite/innodb_fts/r/innodb-fts-ddl.result
+++ b/mysql-test/suite/innodb_fts/r/innodb-fts-ddl.result
@@ -264,6 +264,18 @@ t1	CREATE TABLE `t1` (
   `f1` int(11) NOT NULL
 ) ENGINE=InnoDB DEFAULT CHARSET=latin1
 DROP TABLE t1;
+#
+# MDEV-25271 Double free of table when inplace alter
+#        FTS add index fails
+#
+call mtr.add_suppression("InnoDB: Operating system error number .* in a file operation.");
+call mtr.add_suppression("InnoDB: Error number .* means");
+call mtr.add_suppression("InnoDB: Cannot create file");
+call mtr.add_suppression("InnoDB: Failed to create");
+CREATE TABLE t1(a TEXT, FTS_DOC_ID BIGINT UNSIGNED NOT NULL UNIQUE) ENGINE=InnoDB;
+ALTER TABLE t1 ADD FULLTEXT(a), ALGORITHM=INPLACE;
+ERROR HY000: Got error 11 "Resource temporarily unavailable" from storage engine InnoDB
+DROP TABLE t1;
 CREATE TABLE t1 (a VARCHAR(3)) ENGINE=InnoDB;
 ALTER TABLE t1 ADD FULLTEXT KEY(a), ADD COLUMN b VARCHAR(3), ADD FULLTEXT KEY(b);
 DROP TABLE t1;
diff --git a/mysql-test/suite/innodb_fts/r/misc_debug.result b/mysql-test/suite/innodb_fts/r/misc_debug.result
index 10e3cf8874d..41f8d08ea7d 100644
--- a/mysql-test/suite/innodb_fts/r/misc_debug.result
+++ b/mysql-test/suite/innodb_fts/r/misc_debug.result
@@ -52,3 +52,16 @@ CHECK TABLE t1;
 Table	Op	Msg_type	Msg_text
 test.t1	check	status	OK
 DROP TABLE t1;
+#
+# MDEV-25663 Double free of transaction during TRUNCATE
+#
+call mtr.add_suppression("InnoDB: \\(Too many concurrent transactions\\)");
+SET DEBUG_DBUG='-d,ib_create_table_fail_too_many_trx';
+CREATE TABLE t1 (b CHAR(12), FULLTEXT KEY(b)) engine=InnoDB;
+SET @save_dbug= @@debug_dbug;
+SET debug_dbug='+d,ib_create_table_fail_too_many_trx';
+TRUNCATE t1;
+ERROR HY000: Got error -1 "Internal error < 0 (Not system error)" from storage engine InnoDB
+SET debug_dbug=@save_dbug;
+DROP TABLE t1;
+# End of 10.3 tests
diff --git a/mysql-test/suite/innodb_fts/t/innodb-fts-ddl.opt b/mysql-test/suite/innodb_fts/t/innodb-fts-ddl.opt
new file mode 100644
index 00000000000..e6ae8d0fe0a
--- /dev/null
+++ b/mysql-test/suite/innodb_fts/t/innodb-fts-ddl.opt
@@ -0,0 +1 @@
+--enable-plugin-innodb-sys-tables
diff --git a/mysql-test/suite/innodb_fts/t/innodb-fts-ddl.test b/mysql-test/suite/innodb_fts/t/innodb-fts-ddl.test
index 7c56811a2d9..78494910b48 100644
--- a/mysql-test/suite/innodb_fts/t/innodb-fts-ddl.test
+++ b/mysql-test/suite/innodb_fts/t/innodb-fts-ddl.test
@@ -319,6 +319,25 @@ ALTER TABLE t1 ADD FTS_DOC_ID INT UNSIGNED NOT NULL, ALGORITHM=INPLACE;
 SHOW CREATE TABLE t1;
 DROP TABLE t1;
 
+--echo #
+--echo # MDEV-25271 Double free of table when inplace alter
+--echo #        FTS add index fails
+--echo #
+call mtr.add_suppression("InnoDB: Operating system error number .* in a file operation.");
+call mtr.add_suppression("InnoDB: Error number .* means");
+call mtr.add_suppression("InnoDB: Cannot create file");
+call mtr.add_suppression("InnoDB: Failed to create");
+
+let MYSQLD_DATADIR=`select @@datadir`;
+CREATE TABLE t1(a TEXT, FTS_DOC_ID BIGINT UNSIGNED NOT NULL UNIQUE) ENGINE=InnoDB;
+let $fts_aux_file= `select concat('FTS_',right(concat(repeat('0',16), lower(hex(TABLE_ID))),16),'_BEING_DELETED.ibd') FROM INFORMATION_SCHEMA.INNODB_SYS_TABLES WHERE NAME='test/t1'`;
+write_file $MYSQLD_DATADIR/test/$fts_aux_file;
+EOF
+--error ER_GET_ERRNO
+ALTER TABLE t1 ADD FULLTEXT(a), ALGORITHM=INPLACE;
+DROP TABLE t1;
+remove_file $MYSQLD_DATADIR/test/$fts_aux_file;
+
 # Add more than one FTS index
 CREATE TABLE t1 (a VARCHAR(3)) ENGINE=InnoDB;
 ALTER TABLE t1 ADD FULLTEXT KEY(a), ADD COLUMN b VARCHAR(3), ADD FULLTEXT KEY(b);
diff --git a/mysql-test/suite/innodb_fts/t/misc_debug.test b/mysql-test/suite/innodb_fts/t/misc_debug.test
index 461e3f1d9d4..90cb84976ce 100644
--- a/mysql-test/suite/innodb_fts/t/misc_debug.test
+++ b/mysql-test/suite/innodb_fts/t/misc_debug.test
@@ -83,3 +83,18 @@ ALTER TABLE t1 ADD bl INT AS (LENGTH(b)) VIRTUAL;
 CHECK TABLE t1;
 DROP TABLE t1;
 --source include/wait_until_count_sessions.inc
+
+--echo #
+--echo # MDEV-25663 Double free of transaction during TRUNCATE
+--echo #
+call mtr.add_suppression("InnoDB: \\(Too many concurrent transactions\\)");
+SET DEBUG_DBUG='-d,ib_create_table_fail_too_many_trx';
+
+CREATE TABLE t1 (b CHAR(12), FULLTEXT KEY(b)) engine=InnoDB;
+SET @save_dbug= @@debug_dbug;
+SET debug_dbug='+d,ib_create_table_fail_too_many_trx';
+--error ER_GET_ERRNO
+TRUNCATE t1;
+SET debug_dbug=@save_dbug;
+DROP TABLE t1;
+--echo # End of 10.3 tests
diff --git a/mysql-test/suite/perfschema/r/hostcache_ipv4_auth_ed25519.result b/mysql-test/suite/perfschema/r/hostcache_ipv4_auth_ed25519.result
new file mode 100644
index 00000000000..6e3d928509c
--- /dev/null
+++ b/mysql-test/suite/perfschema/r/hostcache_ipv4_auth_ed25519.result
@@ -0,0 +1,121 @@
+install soname 'auth_ed25519';
+flush status;
+flush hosts;
+flush user_resources;
+flush privileges;
+select `User`, `Host` from mysql.`user` where `host` like '%\\%%';
+User	Host
+select `User`, `Host` from mysql.`user` where `user` like '192.%';
+User	Host
+select `User`, `Host` from mysql.`user` where `user` like '2001:%';
+User	Host
+select `User`, `Host` from mysql.`user` where `user` like 'santa.claus.%';
+User	Host
+create user plug1@'santa.claus.ipv4.example.com'
+  identified with ed25519;
+update mysql.global_priv set priv=json_set(priv, '$.authentication_string', 'foo') where user='plug1';
+flush privileges;
+create user plug2@'santa.claus.ipv4.example.com'
+  identified with ED25519 as 'vubFBzIrapbfHct1/J72dnUryz5VS7lA6XHH8sIx4TI';
+set @saved_dbug = @@global.debug_dbug;
+set global debug_dbug= "+d,vio_peer_addr_fake_ipv4,getnameinfo_fake_ipv4,getaddrinfo_fake_good_ipv4";
+connect(127.0.0.1,plug1,foo,test,PORT,SOCKET);
+connect con1, 127.0.0.1, plug1,foo,,$MASTER_MYPORT;
+ERROR 28000: Access denied for user 'plug1'@'santa.claus.ipv4.example.com' (using password: YES)
+# Dumping performance_schema.host_cache
+IP	192.0.2.4
+HOST	santa.claus.ipv4.example.com
+HOST_VALIDATED	YES
+SUM_CONNECT_ERRORS	1
+COUNT_HOST_BLOCKED_ERRORS	0
+COUNT_NAMEINFO_TRANSIENT_ERRORS	0
+COUNT_NAMEINFO_PERMANENT_ERRORS	0
+COUNT_FORMAT_ERRORS	0
+COUNT_ADDRINFO_TRANSIENT_ERRORS	0
+COUNT_ADDRINFO_PERMANENT_ERRORS	0
+COUNT_FCRDNS_ERRORS	0
+COUNT_HOST_ACL_ERRORS	0
+COUNT_NO_AUTH_PLUGIN_ERRORS	0
+COUNT_AUTH_PLUGIN_ERRORS	0
+COUNT_HANDSHAKE_ERRORS	1
+COUNT_PROXY_USER_ERRORS	0
+COUNT_PROXY_USER_ACL_ERRORS	0
+COUNT_AUTHENTICATION_ERRORS	0
+COUNT_SSL_ERRORS	0
+COUNT_MAX_USER_CONNECTIONS_ERRORS	0
+COUNT_MAX_USER_CONNECTIONS_PER_HOUR_ERRORS	0
+COUNT_DEFAULT_DATABASE_ERRORS	0
+COUNT_INIT_CONNECT_ERRORS	0
+COUNT_LOCAL_ERRORS	0
+COUNT_UNKNOWN_ERRORS	0
+FIRST_ERROR_SEEN	set
+LAST_ERROR_SEEN	set
+connect(127.0.0.1,plug2,bar,test,PORT,SOCKET);
+connect con1, 127.0.0.1, plug2,bar,,$MASTER_MYPORT;
+ERROR 28000: Access denied for user 'plug2'@'santa.claus.ipv4.example.com' (using password: YES)
+# Dumping performance_schema.host_cache
+IP	192.0.2.4
+HOST	santa.claus.ipv4.example.com
+HOST_VALIDATED	YES
+SUM_CONNECT_ERRORS	1
+COUNT_HOST_BLOCKED_ERRORS	0
+COUNT_NAMEINFO_TRANSIENT_ERRORS	0
+COUNT_NAMEINFO_PERMANENT_ERRORS	0
+COUNT_FORMAT_ERRORS	0
+COUNT_ADDRINFO_TRANSIENT_ERRORS	0
+COUNT_ADDRINFO_PERMANENT_ERRORS	0
+COUNT_FCRDNS_ERRORS	0
+COUNT_HOST_ACL_ERRORS	0
+COUNT_NO_AUTH_PLUGIN_ERRORS	0
+COUNT_AUTH_PLUGIN_ERRORS	0
+COUNT_HANDSHAKE_ERRORS	1
+COUNT_PROXY_USER_ERRORS	0
+COUNT_PROXY_USER_ACL_ERRORS	0
+COUNT_AUTHENTICATION_ERRORS	1
+COUNT_SSL_ERRORS	0
+COUNT_MAX_USER_CONNECTIONS_ERRORS	0
+COUNT_MAX_USER_CONNECTIONS_PER_HOUR_ERRORS	0
+COUNT_DEFAULT_DATABASE_ERRORS	0
+COUNT_INIT_CONNECT_ERRORS	0
+COUNT_LOCAL_ERRORS	0
+COUNT_UNKNOWN_ERRORS	0
+FIRST_ERROR_SEEN	set
+LAST_ERROR_SEEN	set
+connect con1, 127.0.0.1, plug2,foo,,$MASTER_MYPORT;
+select current_user();
+current_user()
+plug2@santa.claus.ipv4.example.com
+disconnect con1;
+connection default;
+# Dumping performance_schema.host_cache
+IP	192.0.2.4
+HOST	santa.claus.ipv4.example.com
+HOST_VALIDATED	YES
+SUM_CONNECT_ERRORS	0
+COUNT_HOST_BLOCKED_ERRORS	0
+COUNT_NAMEINFO_TRANSIENT_ERRORS	0
+COUNT_NAMEINFO_PERMANENT_ERRORS	0
+COUNT_FORMAT_ERRORS	0
+COUNT_ADDRINFO_TRANSIENT_ERRORS	0
+COUNT_ADDRINFO_PERMANENT_ERRORS	0
+COUNT_FCRDNS_ERRORS	0
+COUNT_HOST_ACL_ERRORS	0
+COUNT_NO_AUTH_PLUGIN_ERRORS	0
+COUNT_AUTH_PLUGIN_ERRORS	0
+COUNT_HANDSHAKE_ERRORS	1
+COUNT_PROXY_USER_ERRORS	0
+COUNT_PROXY_USER_ACL_ERRORS	0
+COUNT_AUTHENTICATION_ERRORS	1
+COUNT_SSL_ERRORS	0
+COUNT_MAX_USER_CONNECTIONS_ERRORS	0
+COUNT_MAX_USER_CONNECTIONS_PER_HOUR_ERRORS	0
+COUNT_DEFAULT_DATABASE_ERRORS	0
+COUNT_INIT_CONNECT_ERRORS	0
+COUNT_LOCAL_ERRORS	0
+COUNT_UNKNOWN_ERRORS	0
+FIRST_ERROR_SEEN	set
+LAST_ERROR_SEEN	set
+drop user plug1@'santa.claus.ipv4.example.com';
+drop user plug2@'santa.claus.ipv4.example.com';
+set @@global.debug_dbug = @saved_dbug;
+uninstall plugin ed25519;
diff --git a/mysql-test/suite/perfschema/t/hostcache_ipv4_auth_ed25519.test b/mysql-test/suite/perfschema/t/hostcache_ipv4_auth_ed25519.test
new file mode 100644
index 00000000000..4c68d3af51e
--- /dev/null
+++ b/mysql-test/suite/perfschema/t/hostcache_ipv4_auth_ed25519.test
@@ -0,0 +1,56 @@
+#
+# Tests for the performance_schema host_cache.
+#
+# Test authorization with auth plugins.
+# error reporting in:
+# - column COUNT_AUTH_PLUGIN_ERRORS
+# - column COUNT_PROXY_USER_ERRORS
+# - column COUNT_PROXY_USER_ACL_ERRORS
+
+source include/not_embedded.inc;
+source include/have_debug.inc;
+source include/have_perfschema.inc;
+source include/have_plugin_auth.inc;
+source include/have_hostname_cache.inc;
+
+if (!$AUTH_ED25519_SO) {
+  skip No auth_ed25519 plugin;
+}
+install soname 'auth_ed25519';
+
+# Enforce a clean state
+source ../include/wait_for_pfs_thread_count.inc;
+source ../include/hostcache_set_state.inc;
+
+create user plug1@'santa.claus.ipv4.example.com'
+  identified with ed25519;
+update mysql.global_priv set priv=json_set(priv, '$.authentication_string', 'foo') where user='plug1';
+flush privileges;
+
+create user plug2@'santa.claus.ipv4.example.com'
+  identified with ED25519 as 'vubFBzIrapbfHct1/J72dnUryz5VS7lA6XHH8sIx4TI';
+
+set @saved_dbug = @@global.debug_dbug;
+set global debug_dbug= "+d,vio_peer_addr_fake_ipv4,getnameinfo_fake_ipv4,getaddrinfo_fake_good_ipv4";
+
+replace_result $MASTER_MYPORT PORT $MASTER_MYSOCK SOCKET;
+error ER_ACCESS_DENIED_ERROR;
+connect con1, 127.0.0.1, plug1,foo,,$MASTER_MYPORT;
+source ../include/hostcache_dump.inc;
+
+replace_result $MASTER_MYPORT PORT $MASTER_MYSOCK SOCKET;
+error ER_ACCESS_DENIED_ERROR;
+connect con1, 127.0.0.1, plug2,bar,,$MASTER_MYPORT;
+source ../include/hostcache_dump.inc;
+
+connect con1, 127.0.0.1, plug2,foo,,$MASTER_MYPORT;
+select current_user();
+disconnect con1;
+connection default;
+source ../include/hostcache_dump.inc;
+
+drop user plug1@'santa.claus.ipv4.example.com';
+drop user plug2@'santa.claus.ipv4.example.com';
+
+set @@global.debug_dbug = @saved_dbug;
+uninstall plugin ed25519;
diff --git a/plugin/auth_ed25519/server_ed25519.c b/plugin/auth_ed25519/server_ed25519.c
index 6fec98c56fc..b789bd34ca4 100644
--- a/plugin/auth_ed25519/server_ed25519.c
+++ b/plugin/auth_ed25519/server_ed25519.c
@@ -1,5 +1,5 @@
 /*
-   Copyright (c) 2017, MariaDB
+   Copyright (c) 2017, 2021, MariaDB
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
@@ -42,7 +42,7 @@ static int auth(MYSQL_PLUGIN_VIO *vio, MYSQL_SERVER_AUTH_INFO *info)
 
   /* prepare random nonce */
   if (my_random_bytes((unsigned char *)nonce, (int)sizeof(nonce)))
-    return CR_AUTH_USER_CREDENTIALS;
+    return CR_ERROR; // eh? OpenSSL error
 
   /* send it */
   if (vio->write_packet(vio, reply + CRYPTO_BYTES, NONCE_BYTES))
@@ -55,7 +55,7 @@ static int auth(MYSQL_PLUGIN_VIO *vio, MYSQL_SERVER_AUTH_INFO *info)
 
   if (crypto_sign_open(reply, CRYPTO_BYTES + NONCE_BYTES,
                        (unsigned char*)info->auth_string))
-    return CR_ERROR;
+    return CR_AUTH_USER_CREDENTIALS; // wrong password provided by the user
 
   return CR_OK;
 }
diff --git a/scripts/wsrep_sst_common.sh b/scripts/wsrep_sst_common.sh
index f4ac2e9936d..952a37f75d2 100644
--- a/scripts/wsrep_sst_common.sh
+++ b/scripts/wsrep_sst_common.sh
@@ -875,7 +875,9 @@ get_openssl()
     readonly OPENSSL_BINARY
 }
 
+#
 # Generate a string equivalent to 16 random bytes
+#
 wsrep_gen_secret()
 {
     get_openssl
@@ -889,16 +891,36 @@ wsrep_gen_secret()
     fi
 }
 
+#
+# Checking if the address passed to us is local.
+# If the second parameter is nonzero, then this function
+# does not check for matches with local domain names:
+#
 is_local_ip()
 {
-    [ "$1" = '127.0.0.1' ]      && return 0
-    [ "$1" = '127.0.0.2' ]      && return 0
-    [ "$1" = 'localhost' ]      && return 0
-    [ "$1" = '[::1]' ]          && return 0
-    [ "$1" = "$(hostname -s)" ] && return 0
-    [ "$1" = "$(hostname -f)" ] && return 0
-    [ "$1" = "$(hostname -d)" ] && return 0
-
+    # Rapid recognition of the most common cases:
+    [ "$1" = '127.0.0.1' -o \
+      "$1" = '127.0.0.2' -o \
+      "$1" = 'localhost' -o \
+      "$1" = '[::1]' ] && return 0
+    # If the address starts with "127." this is probably a local
+    # address, but we need to clarify what follows this prefix:
+    if [ "${1#127.}" != "$1" ]; then
+        # All 127.0.0.0/8 addresses are local:
+        if echo "$1" | grep -q -E '^127\.[0-9]+\.[0-9]+\.[0-9]+$'; then
+            return 0
+        fi
+    fi
+    # If the second parameter is nonzero, then we will skip
+    # the domain name check:
+    if [ "${2:-0}" -eq 0 ]; then
+       # We consider all the names of a given host to be local addresses:
+       [ "$1" = "$(hostname -s)" -o \
+         "$1" = "$(hostname -f)" -o \
+         "$1" = "$(hostname -d)" ] && return 0
+    fi
+    # Now let's check if the given address is assigned to
+    # one of the network cards:
     local ip_util="$(command -v ip)"
     if [ -n "$ip_util" ]; then
         # ip address show ouput format is " inet[6] <address>/<mask>":
@@ -914,7 +936,6 @@ is_local_ip()
                  | grep -F " $1 " >/dev/null && return 0
         fi
     fi
-
     return 1
 }
 
diff --git a/sql/item.cc b/sql/item.cc
index 8cad7111e07..2658c443f4d 100644
--- a/sql/item.cc
+++ b/sql/item.cc
@@ -5902,6 +5902,7 @@ bool Item_field::fix_fields(THD *thd, Item **reference)
             */
             set_max_sum_func_level(thd, select);
             set_field(new_field);
+            depended_from= (*((Item_field**)res))->depended_from;
             return 0;
           }
           else
diff --git a/sql/item_subselect.cc b/sql/item_subselect.cc
index ffebf7d6994..abc4003c35f 100644
--- a/sql/item_subselect.cc
+++ b/sql/item_subselect.cc
@@ -2321,11 +2321,12 @@ Item_in_subselect::create_single_in_to_exists_cond(JOIN *join,
     */
     Item *item= (Item*) select_lex->item_list.head();
 
-    if (select_lex->table_list.elements)
+    if (select_lex->table_list.elements ||
+        !(select_lex->master_unit()->is_unit_op()))
     {
       Item *having= item;
       Item *orig_item= item;
-       
+
       item= func->create(thd, expr, item);
       if (!abort_on_null && orig_item->maybe_null)
       {
@@ -2369,32 +2370,28 @@ Item_in_subselect::create_single_in_to_exists_cond(JOIN *join,
     }
     else
     {
-      if (select_lex->master_unit()->is_unit_op())
-      {
-        LEX_CSTRING field_name= {STRING_WITH_LEN("<result>") };
-        Item *new_having=
-          func->create(thd, expr,
-                       new (thd->mem_root) Item_ref_null_helper(thd,
+      DBUG_ASSERT(select_lex->master_unit()->is_unit_op());
+      LEX_CSTRING field_name= {STRING_WITH_LEN("<result>") };
+      Item *new_having=
+        func->create(thd, expr,
+                     new (thd->mem_root) Item_ref_null_helper(thd,
                                                   &select_lex->context,
                                                   this,
                                                   &select_lex->ref_pointer_array[0],
                                                   no_matter_name,
                                                   field_name));
-        if (!abort_on_null && left_expr->maybe_null)
-        {
-          disable_cond_guard_for_const_null_left_expr(0);
-          if (!(new_having= new (thd->mem_root) Item_func_trig_cond(thd, new_having,
-                                                            get_cond_guard(0))))
-            DBUG_RETURN(true);
-        }
-
-        new_having->name= in_having_cond;
-        if (fix_having(new_having, select_lex))
+      if (!abort_on_null && left_expr->maybe_null)
+      {
+        disable_cond_guard_for_const_null_left_expr(0);
+        if (!(new_having= new (thd->mem_root)
+              Item_func_trig_cond(thd, new_having, get_cond_guard(0))))
           DBUG_RETURN(true);
-        *having_item= new_having;
       }
-      else
-        DBUG_ASSERT(false);
+
+      new_having->name= in_having_cond;
+      if (fix_having(new_having, select_lex))
+        DBUG_RETURN(true);
+      *having_item= new_having;
     }
   }
 
diff --git a/sql/lock.cc b/sql/lock.cc
index 5d502755541..559f1195b32 100644
--- a/sql/lock.cc
+++ b/sql/lock.cc
@@ -1124,21 +1124,22 @@ void Global_read_lock::unlock_global_read_lock(THD *thd)
   thd->mdl_context.release_lock(m_mdl_global_read_lock);
 
 #ifdef WITH_WSREP
-  if (m_state == GRL_ACQUIRED_AND_BLOCKS_COMMIT)
+  if (m_state == GRL_ACQUIRED_AND_BLOCKS_COMMIT &&
+      wsrep_locked_seqno != WSREP_SEQNO_UNDEFINED)
   {
     Wsrep_server_state& server_state= Wsrep_server_state::instance();
     if (server_state.state() == Wsrep_server_state::s_donor ||
         (WSREP_NNULL(thd) &&
          server_state.state() != Wsrep_server_state::s_synced))
     {
-      /* TODO: maybe redundant here?: */
-      wsrep_locked_seqno= WSREP_SEQNO_UNDEFINED;
       server_state.resume();
+      wsrep_locked_seqno= WSREP_SEQNO_UNDEFINED;
     }
     else if (WSREP_NNULL(thd) &&
              server_state.state() == Wsrep_server_state::s_synced)
     {
       server_state.resume_and_resync();
+      wsrep_locked_seqno= WSREP_SEQNO_UNDEFINED;
     }
   }
 #endif /* WITH_WSREP */
diff --git a/sql/mysqld.cc b/sql/mysqld.cc
index 29aaf389ca1..3a164d68574 100644
--- a/sql/mysqld.cc
+++ b/sql/mysqld.cc
@@ -4822,7 +4822,7 @@ static int init_server_components()
   }
 #endif /* WITH_WSREP */
 
-  if (opt_bin_log)
+  if (!opt_help && opt_bin_log)
   {
     if (mysql_bin_log.open_index_file(opt_binlog_index_name, opt_bin_logname,
                                       TRUE))
diff --git a/sql/mysqld.h b/sql/mysqld.h
index 24580d6bb90..8ca3a109333 100644
--- a/sql/mysqld.h
+++ b/sql/mysqld.h
@@ -708,7 +708,7 @@ extern struct st_VioSSLFd * ssl_acceptor_fd;
  */
 extern my_bool opt_large_pages;
 extern uint opt_large_page_size;
-extern char lc_messages_dir[FN_REFLEN];
+extern MYSQL_PLUGIN_IMPORT char lc_messages_dir[FN_REFLEN];
 extern char *lc_messages_dir_ptr, *log_error_file_ptr;
 extern MYSQL_PLUGIN_IMPORT char reg_ext[FN_EXTLEN];
 extern MYSQL_PLUGIN_IMPORT uint reg_ext_length;
diff --git a/sql/sql_acl.cc b/sql/sql_acl.cc
index 5f5f5428dad..71b5defeef8 100644
--- a/sql/sql_acl.cc
+++ b/sql/sql_acl.cc
@@ -13904,7 +13904,12 @@ static int server_mpvio_read_packet(MYSQL_PLUGIN_VIO *param, uchar **buf)
 
 done:
   if (set_user_salt_if_needed(mpvio->acl_user, mpvio->curr_auth, mpvio->plugin))
+  {
+    ai->thd->clear_error(); // authenticating user should not see these errors
+    my_error(ER_ACCESS_DENIED_ERROR, MYF(0), ai->thd->security_ctx->user,
+             ai->thd->security_ctx->host_or_ip, ER_THD(ai->thd, ER_YES));
     goto err;
+  }
 
   ai->user_name= ai->thd->security_ctx->user;
   ai->user_name_length= (uint) strlen(ai->user_name);
diff --git a/sql/sql_class.h b/sql/sql_class.h
index ac8d26cce03..62ce5c8a2d2 100644
--- a/sql/sql_class.h
+++ b/sql/sql_class.h
@@ -1044,7 +1044,7 @@ mysqld_collation_get_by_name(const char *name,
 
 static inline bool is_supported_parser_charset(CHARSET_INFO *cs)
 {
-  return MY_TEST(cs->mbminlen == 1);
+  return MY_TEST(cs->mbminlen == 1 && cs->number != 17 /* filename */);
 }
 
 /** THD registry */
@@ -5156,7 +5156,6 @@ public:
         THD_TRANS::EXECUTED_TABLE_ADMIN_CMD));
   }
 
-
   uint get_net_wait_timeout()
   {
     if (in_active_multi_stmt_transaction())
diff --git a/sql/sql_lex.cc b/sql/sql_lex.cc
index de323ae336d..27088df3417 100644
--- a/sql/sql_lex.cc
+++ b/sql/sql_lex.cc
@@ -1,5 +1,5 @@
 /* Copyright (c) 2000, 2019, Oracle and/or its affiliates.
-   Copyright (c) 2009, 2020, MariaDB Corporation
+   Copyright (c) 2009, 2021, MariaDB Corporation.
 
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
diff --git a/sql/sql_parse.cc b/sql/sql_parse.cc
index e9252f0b694..68344b49857 100644
--- a/sql/sql_parse.cc
+++ b/sql/sql_parse.cc
@@ -8288,7 +8288,7 @@ TABLE_LIST *st_select_lex::add_table_to_list(THD *thd,
     ptr->is_fqtn= TRUE;
     ptr->db= table->db;
   }
- else if (!lex->with_cte_resolution && lex->copy_db_to(&ptr->db))
+  else if (!lex->with_cte_resolution && lex->copy_db_to(&ptr->db))
     DBUG_RETURN(0);
   else
     ptr->is_fqtn= FALSE;
@@ -8303,7 +8303,7 @@ TABLE_LIST *st_select_lex::add_table_to_list(THD *thd,
     if (ptr->db.length && ptr->db.str != any_db)
       ptr->db.length= my_casedn_str(files_charset_info, (char*) ptr->db.str);
   }
-      
+
   ptr->table_name= table->table;
   ptr->lock_type= lock_type;
   ptr->mdl_type= mdl_type;
@@ -8989,7 +8989,7 @@ void st_select_lex::set_lock_for_tables(thr_lock_type lock_type, bool for_update
     tables->lock_type= lock_type;
     tables->updating=  for_update;
 
-    if (tables->db.str && tables->db.str[0])
+    if (tables->db.length)
       tables->mdl_request.set_type((lock_type >= TL_WRITE_ALLOW_WRITE) ?
                                    MDL_SHARED_WRITE : MDL_SHARED_READ);
   }
diff --git a/sql/sql_view.cc b/sql/sql_view.cc
index 01fd42458a1..b7f64389f02 100644
--- a/sql/sql_view.cc
+++ b/sql/sql_view.cc
@@ -34,7 +34,6 @@
 #include "sp_cache.h"
 #include "datadict.h"   // dd_frm_is_view()
 #include "sql_derived.h"
-#include "sql_cte.h"    // check_dependencies_in_with_clauses()
 #include "opt_trace.h"
 #include "wsrep_mysqld.h"
 
@@ -893,6 +892,13 @@ static int mysql_register_view(THD *thd, TABLE_LIST *view,
 {
   LEX *lex= thd->lex;
 
+  /*
+    Ensure character set number != 17 (character set = filename) and mbminlen=1
+    because these character sets are not parser friendly, which can give weird
+    sequence in .frm file of view and later give parsing error.
+  */
+  DBUG_ASSERT(thd->charset()->mbminlen == 1 && thd->charset()->number != 17);
+
   /*
     View definition query -- a SELECT statement that fully defines view. It
     is generated from the Item-tree built from the original (specified by
diff --git a/storage/connect/CMakeLists.txt b/storage/connect/CMakeLists.txt
index 14ab86cf2d8..ebb61bb487b 100644
--- a/storage/connect/CMakeLists.txt
+++ b/storage/connect/CMakeLists.txt
@@ -423,11 +423,11 @@ IF(CONNECT_WITH_JDBC AND JAVA_FOUND AND JNI_FOUND)
   INSTALL(FILES
     ${CMAKE_CURRENT_SOURCE_DIR}/mysql-test/connect/std_data/JavaWrappers.jar
     ${CMAKE_CURRENT_BINARY_DIR}/JdbcInterface.jar
-    DESTINATION ${INSTALL_PLUGINDIR} COMPONENT connect-engine)
+    DESTINATION ${INSTALL_MYSQLSHAREDIR} COMPONENT connect-engine)
   IF(CONNECT_WITH_MONGO)
     INSTALL(FILES
       ${CMAKE_CURRENT_SOURCE_DIR}/mysql-test/connect/std_data/Mongo2.jar
       ${CMAKE_CURRENT_SOURCE_DIR}/mysql-test/connect/std_data/Mongo3.jar
-      DESTINATION ${INSTALL_PLUGINDIR} COMPONENT connect-engine)
+      DESTINATION ${INSTALL_MYSQLSHAREDIR} COMPONENT connect-engine)
   ENDIF()
 ENDIF()
diff --git a/storage/connect/javaconn.cpp b/storage/connect/javaconn.cpp
index eda5d31c80b..03c9ecb9221 100644
--- a/storage/connect/javaconn.cpp
+++ b/storage/connect/javaconn.cpp
@@ -57,8 +57,8 @@ extern "C" HINSTANCE s_hModule;           // Saved module handle
 extern char *JvmPath;   // The connect_jvm_path global variable value
 extern char *ClassPath; // The connect_class_path global variable value
 
-char *GetPluginDir(void);
 char *GetJavaWrapper(void);		// The connect_java_wrapper variable value
+extern MYSQL_PLUGIN_IMPORT char lc_messages_dir[FN_REFLEN];
 
 /***********************************************************************/
 /*  Static JAVAConn objects.                                           */
@@ -401,23 +401,23 @@ bool JAVAConn::Open(PGLOBAL g)
 		}	// endif ClassPath
 
 #if 0
-		// Java source will be compiled as a jar file installed in the plugin dir
+		// Java source will be compiled as a jar file installed in the mysql share dir
 		jpop->Append(sep);
-		jpop->Append(GetPluginDir());
+		jpop->Append(lc_messages_dir);
 		jpop->Append("JdbcInterface.jar");
 #endif // 0
 
-		// All wrappers are pre-compiled in JavaWrappers.jar in the plugin dir
+		// All wrappers are pre-compiled in JavaWrappers.jar in the mysql share dir
 		jpop->Append(sep);
-		jpop->Append(GetPluginDir());
+		jpop->Append(lc_messages_dir);
 		jpop->Append("JavaWrappers.jar");
 
 #if defined(MONGO_SUPPORT)
 		jpop->Append(sep);
-		jpop->Append(GetPluginDir());
+		jpop->Append(lc_messages_dir);
 		jpop->Append("Mongo3.jar");
 		jpop->Append(sep);
-		jpop->Append(GetPluginDir());
+		jpop->Append(lc_messages_dir);
 		jpop->Append("Mongo2.jar");
 #endif   // MONGO_SUPPORT
 
diff --git a/storage/innobase/fts/fts0fts.cc b/storage/innobase/fts/fts0fts.cc
index cc0a41042af..bdc6660c0a6 100644
--- a/storage/innobase/fts/fts0fts.cc
+++ b/storage/innobase/fts/fts0fts.cc
@@ -1774,7 +1774,6 @@ fts_create_one_common_table(
 	dict_table_add_system_columns(new_table, heap);
 	error = row_create_table_for_mysql(new_table, trx,
 		FIL_ENCRYPTION_DEFAULT, FIL_DEFAULT_ENCRYPTION_KEY);
-
 	if (error == DB_SUCCESS) {
 
 		dict_index_t*	index = dict_mem_index_create(
@@ -1795,17 +1794,22 @@ fts_create_one_common_table(
 		error =	row_create_index_for_mysql(index, trx, NULL);
 
 		trx->dict_operation = op;
+	} else {
+err_exit:
+		new_table = NULL;
+		ib::warn() << "Failed to create FTS common table "
+			<< fts_table_name;
+		trx->error_state = error;
+		return NULL;
 	}
 
 	if (error != DB_SUCCESS) {
 		dict_mem_table_free(new_table);
-		new_table = NULL;
-		ib::warn() << "Failed to create FTS common table "
-			<< fts_table_name;
 		trx->error_state = DB_SUCCESS;
 		row_drop_table_for_mysql(fts_table_name, trx, SQLCOM_DROP_DB);
-		trx->error_state = error;
+		goto err_exit;
 	}
+
 	return(new_table);
 }
 
@@ -1851,6 +1855,8 @@ fts_create_common_tables(
 
 	FTS_INIT_FTS_TABLE(&fts_table, NULL, FTS_COMMON_TABLE, table);
 
+	op = trx_get_dict_operation(trx);
+
 	error = fts_drop_common_tables(trx, &fts_table);
 
 	if (error != DB_SUCCESS) {
@@ -1866,7 +1872,8 @@ fts_create_common_tables(
 		dict_table_t*	common_table = fts_create_one_common_table(
 			trx, table, full_name[i], fts_table.suffix, heap);
 
-		if (common_table == NULL) {
+		if (!common_table) {
+			trx->error_state = DB_SUCCESS;
 			error = DB_ERROR;
 			goto func_exit;
 		} else {
@@ -1912,8 +1919,6 @@ fts_create_common_tables(
 
 	error =	row_create_index_for_mysql(index, trx, NULL);
 
-	trx->dict_operation = op;
-
 func_exit:
 	if (error != DB_SUCCESS) {
 		for (it = common_tables.begin(); it != common_tables.end();
@@ -1923,6 +1928,8 @@ func_exit:
 		}
 	}
 
+	trx->dict_operation = op;
+
 	common_tables.clear();
 	mem_heap_free(heap);
 
@@ -2006,16 +2013,20 @@ fts_create_one_index_table(
 		error =	row_create_index_for_mysql(index, trx, NULL);
 
 		trx->dict_operation = op;
+	} else {
+err_exit:
+		new_table = NULL;
+		ib::warn() << "Failed to create FTS index table "
+			<< table_name;
+		trx->error_state = error;
+		return NULL;
 	}
 
 	if (error != DB_SUCCESS) {
 		dict_mem_table_free(new_table);
-		new_table = NULL;
-		ib::warn() << "Failed to create FTS index table "
-			<< table_name;
 		trx->error_state = DB_SUCCESS;
 		row_drop_table_for_mysql(table_name, trx, SQLCOM_DROP_DB);
-		trx->error_state = error;
+		goto err_exit;
 	}
 
 	return(new_table);
diff --git a/storage/innobase/handler/ha_innodb.cc b/storage/innobase/handler/ha_innodb.cc
index 20f21c29992..e023ed2a646 100644
--- a/storage/innobase/handler/ha_innodb.cc
+++ b/storage/innobase/handler/ha_innodb.cc
@@ -5930,7 +5930,9 @@ ha_innobase::open(const char* name, int, uint)
 	/* Index block size in InnoDB: used by MySQL in query optimization */
 	stats.block_size = static_cast<uint>(srv_page_size);
 
-	if (m_prebuilt->table == NULL
+	const my_bool for_vc_purge = THDVAR(thd, background_thread);
+
+	if (for_vc_purge || !m_prebuilt->table
 	    || m_prebuilt->table->is_temporary()
 	    || m_prebuilt->table->persistent_autoinc
 	    || !m_prebuilt->table->is_readable()) {
@@ -5957,7 +5959,7 @@ ha_innobase::open(const char* name, int, uint)
 	ut_ad(!m_prebuilt->table
 	      || table->versioned() == m_prebuilt->table->versioned());
 
-	if (!THDVAR(thd, background_thread)) {
+	if (!for_vc_purge) {
 		info(HA_STATUS_NO_LOCK | HA_STATUS_VARIABLE | HA_STATUS_CONST
 		     | HA_STATUS_OPEN);
 	}
@@ -12911,7 +12913,6 @@ create_table_info_t::create_table_update_dict()
 	if (m_flags2 & DICT_TF2_FTS) {
 		if (!innobase_fts_load_stopword(innobase_table, NULL, m_thd)) {
 			dict_table_close(innobase_table, FALSE, FALSE);
-			m_trx->free();
 			DBUG_RETURN(-1);
 		}
 
@@ -13041,19 +13042,12 @@ ha_innobase::create(
 		}
 		trx_rollback_for_mysql(trx);
 		row_mysql_unlock_data_dictionary(trx);
-		if (own_trx) {
-			trx->free();
-		}
-		DBUG_RETURN(error);
+		goto func_exit;
 	}
 
 	innobase_commit_low(trx);
 	row_mysql_unlock_data_dictionary(trx);
 
-	if (own_trx) {
-		trx->free();
-	}
-
 	/* Flush the log to reduce probability that the .frm files and
 	the InnoDB data dictionary get out-of-sync if the user runs
 	with innodb_flush_log_at_trx_commit = 0 */
@@ -13063,6 +13057,11 @@ ha_innobase::create(
 
 	error = info.create_table_update_dict();
 
+func_exit:
+	if (own_trx) {
+		trx->free();
+	}
+
 	DBUG_RETURN(error);
 }
 
diff --git a/storage/mroonga/vendor/groonga/CMakeLists.txt b/storage/mroonga/vendor/groonga/CMakeLists.txt
index ebb8b6906ec..b6ad3a9e50d 100644
--- a/storage/mroonga/vendor/groonga/CMakeLists.txt
+++ b/storage/mroonga/vendor/groonga/CMakeLists.txt
@@ -588,14 +588,13 @@ else()
   set(GRN_WITH_MESSAGE_PACK FALSE)
 endif()
 
-find_program(RUBY NAMES
-  "ruby2.3" "ruby23"
-  "ruby2.2" "ruby22"
-  "ruby2.1" "ruby21"
-  "ruby")
-
 option(GRN_WITH_MRUBY "use mruby" OFF)
 if(GRN_WITH_MRUBY)
+  find_program(RUBY NAMES
+    "ruby2.3" "ruby23"
+    "ruby2.2" "ruby22"
+    "ruby2.1" "ruby21"
+    "ruby")
   set(MRUBY_INCLUDE_DIRS
     "${CMAKE_CURRENT_SOURCE_DIR}/vendor/mruby-source/include")
   set(MRUBY_LIBS mruby)