diff --git a/cmake/stack_direction.c b/cmake/stack_direction.c
deleted file mode 100644
index 1f7a5d0b135..00000000000
--- a/cmake/stack_direction.c
+++ /dev/null
@@ -1,33 +0,0 @@
-/*
- Copyright (c) 2009 Sun Microsystems, Inc.
- Use is subject to license terms.
- 
- 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
- the Free Software Foundation; version 2 of the License.
-
- This program is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with this program; if not, write to the Free Software
- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1335  USA */
-
-/* Check stack direction (0-down, 1-up) */
-int f(int *a) 
-{
-  int b;
-  return(&b > a)?1:0; 
-}
-/*
- Prevent compiler optimizations by calling function 
- through pointer.
-*/
-volatile int (*ptr_f)(int *) = f;
-int main() 
-{
-  int a;
-  return ptr_f(&a);
-}
diff --git a/configure.cmake b/configure.cmake
index faff9f40115..76f43e992d8 100644
--- a/configure.cmake
+++ b/configure.cmake
@@ -671,25 +671,11 @@ int main()
 }
 " HAVE_PTHREAD_YIELD_ZERO_ARG)
 
-IF(NOT STACK_DIRECTION)
-  IF(CMAKE_CROSSCOMPILING AND NOT DEFINED CMAKE_CROSSCOMPILING_EMULATOR)
-    MESSAGE(FATAL_ERROR 
-    "STACK_DIRECTION is not defined.  Please specify -DSTACK_DIRECTION=1 "
-    "or -DSTACK_DIRECTION=-1 when calling cmake.")
-  ELSE()
-    TRY_RUN(STACKDIR_RUN_RESULT STACKDIR_COMPILE_RESULT    
-     ${CMAKE_BINARY_DIR} 
-     ${CMAKE_SOURCE_DIR}/cmake/stack_direction.c
-     )
-     # Test program returns 0 (down) or 1 (up).
-     # Convert to -1 or 1
-     IF(STACKDIR_RUN_RESULT EQUAL 0)
-       SET(STACK_DIRECTION -1 CACHE INTERNAL "Stack grows direction")
-     ELSE()
-       SET(STACK_DIRECTION 1 CACHE INTERNAL "Stack grows direction")
-     ENDIF()
-     MESSAGE(STATUS "Checking stack direction : ${STACK_DIRECTION}")
-   ENDIF()
+IF(STACK_DIRECTION)
+ELSEIF(CMAKE_SYSTEM_PROCESSOR MATCHES "^(parisc|hppa)")
+  SET(STACK_DIRECTION 1 CACHE INTERNAL "Stack grows direction")
+ELSE()
+  SET(STACK_DIRECTION -1 CACHE INTERNAL "Stack grows direction")
 ENDIF()
 
 #
diff --git a/debian/rules b/debian/rules
index 062ff03e822..96b36239ea1 100755
--- a/debian/rules
+++ b/debian/rules
@@ -49,16 +49,6 @@ ifeq (32,$(DEB_HOST_ARCH_BITS))
     CMAKEFLAGS += -DPLUGIN_ROCKSDB=NO
 endif
 
-# Cross building requires stack direction instruction
-ifneq ($(DEB_BUILD_ARCH),$(DEB_HOST_ARCH))
-    ifneq (,$(filter $(DEB_HOST_ARCH_CPU),alpha amd64 arm arm64 i386 ia64 m68k mips64el mipsel powerpc ppc64 ppc64el riscv64 s390x sh4 sparc64))
-        CMAKEFLAGS += -DSTACK_DIRECTION=-1
-    endif
-    ifneq (,$(filter $(DEB_HOST_ARCH_CPU),hppa))
-        CMAKEFLAGS += -DSTACK_DIRECTION=1
-    endif
-endif
-
 # Only attempt to build with PMEM on archs that have package libpmem-dev available
 # See https://packages.debian.org/search?searchon=names&keywords=libpmem-dev
 ifneq (,$(filter $(DEB_HOST_ARCH),amd64 arm64 ppc64el riscv64))
diff --git a/mysql-test/main/order_by_pack_big.test b/mysql-test/main/order_by_pack_big.test
index 5e39d9f2988..ec8e0c12c54 100644
--- a/mysql-test/main/order_by_pack_big.test
+++ b/mysql-test/main/order_by_pack_big.test
@@ -112,9 +112,12 @@ set sort_buffer_size=262144*10;
 --source include/analyze-format.inc
 eval analyze format=json $query;
 flush status;
+# Enable view-protocol after fix MDEV-27871
+--disable_view_protocol
 --disable_ps2_protocol
 eval $query;
 --enable_ps2_protocol
+--enable_view_protocol
 show status like '%sort%';
 set sort_buffer_size=default;
 
@@ -126,9 +129,12 @@ set sort_buffer_size=32768;
 --source include/analyze-format.inc
 eval analyze format=json $query;
 flush status;
+# Enable view-protocol after fix MDEV-27871
+--disable_view_protocol
 --disable_ps2_protocol
 eval $query;
 --enable_ps2_protocol
+--enable_view_protocol
 show status like '%sort%';
 set sort_buffer_size=default;
 
diff --git a/mysql-test/main/sp.result b/mysql-test/main/sp.result
index 74734a9b7ed..4e93973782f 100644
--- a/mysql-test/main/sp.result
+++ b/mysql-test/main/sp.result
@@ -8930,6 +8930,31 @@ CREATE TABLE t1 (a INT);
 CREATE PROCEDURE p1() SELECT 1 FROM t1 PROCEDURE ANALYSE( 10, (SELECT a FROM t1));
 ERROR 42000: PROCEDURE does not support subqueries or stored functions
 DROP TABLE t1;
+#
+# MDEV-23902: MariaDB crash on calling function
+#
+CREATE FUNCTION f2 () RETURNS VARCHAR(1)
+BEGIN
+DECLARE rec1 ROW TYPE OF v1;
+SELECT z INTO rec1 FROM v1;
+RETURN 1;
+END|
+CREATE FUNCTION f1 () RETURNS VARCHAR(1) RETURN f2() ;
+CREATE FUNCTION f3 () RETURNS VARCHAR(1) RETURN f_not_exist();
+CREATE VIEW v1 AS SELECT f3() z;
+SELECT f1();
+ERROR HY000: View 'test.v1' references invalid table(s) or column(s) or function(s) or definer/invoker of view lack rights to use them
+# Check that crash doen't happen in case f3 completes with success.
+DROP FUNCTION f3;
+CREATE FUNCTION f3 () RETURNS VARCHAR(1) RETURN '!';
+SELECT f1();
+f1()
+1
+# Clean up
+DROP FUNCTION f1;
+DROP FUNCTION f2;
+DROP FUNCTION f3;
+DROP VIEW v1;
 # End of 10.4 tests
 #
 #
diff --git a/mysql-test/main/sp.test b/mysql-test/main/sp.test
index 6950fbddd65..cc244a20014 100644
--- a/mysql-test/main/sp.test
+++ b/mysql-test/main/sp.test
@@ -10534,6 +10534,38 @@ CREATE PROCEDURE p1() SELECT 1 FROM t1 PROCEDURE ANALYSE( 10, (SELECT a FROM t1)
 
 DROP TABLE t1;
 
+--echo #
+--echo # MDEV-23902: MariaDB crash on calling function
+--echo #
+
+--delimiter |
+CREATE FUNCTION f2 () RETURNS VARCHAR(1)
+BEGIN
+	DECLARE rec1 ROW TYPE OF v1;
+	SELECT z INTO rec1 FROM v1;
+	RETURN 1;
+END|
+--delimiter ;
+
+CREATE FUNCTION f1 () RETURNS VARCHAR(1) RETURN f2() ;
+CREATE FUNCTION f3 () RETURNS VARCHAR(1) RETURN f_not_exist();
+CREATE VIEW v1 AS SELECT f3() z;
+
+--error ER_VIEW_INVALID
+SELECT f1();
+
+--echo # Check that crash doen't happen in case f3 completes with success.
+DROP FUNCTION f3;
+CREATE FUNCTION f3 () RETURNS VARCHAR(1) RETURN '!';
+
+SELECT f1();
+
+--echo # Clean up
+DROP FUNCTION f1;
+DROP FUNCTION f2;
+DROP FUNCTION f3;
+DROP VIEW v1;
+
 --echo # End of 10.4 tests
 --echo #
 
diff --git a/mysql-test/suite/gcol/r/innodb_virtual_purge.result b/mysql-test/suite/gcol/r/innodb_virtual_purge.result
index 48a2d313382..1fcbd05f354 100644
--- a/mysql-test/suite/gcol/r/innodb_virtual_purge.result
+++ b/mysql-test/suite/gcol/r/innodb_virtual_purge.result
@@ -159,4 +159,18 @@ UNIQUE(pk),
 KEY(e)
 ) ENGINE=InnoDB;
 DROP TABLE t1, t2;
+#
+# MDEV-30024 InnoDB: tried to purge non-delete-marked record
+#            of an index on a virtual column prefix
+#
+CREATE TABLE t(a BINARY(8), b CHAR(8) AS (a) VIRTUAL, KEY(b(4)))
+CHARACTER SET utf8 ENGINE=InnoDB;
+INSERT INTO t (a) VALUES (''),('');
+UPDATE t SET a = 'x';
+UPDATE t SET a = '';
+SET GLOBAL innodb_max_purge_lag_wait=0;
+CHECK TABLE t EXTENDED;
+Table	Op	Msg_type	Msg_text
+test.t	check	status	OK
+DROP TABLE t;
 SET GLOBAL innodb_purge_rseg_truncate_frequency = @saved_frequency;
diff --git a/mysql-test/suite/gcol/t/innodb_virtual_purge.test b/mysql-test/suite/gcol/t/innodb_virtual_purge.test
index e9e4caf8e07..3db1b8757ff 100644
--- a/mysql-test/suite/gcol/t/innodb_virtual_purge.test
+++ b/mysql-test/suite/gcol/t/innodb_virtual_purge.test
@@ -172,5 +172,19 @@ dec $n;
 
 DROP TABLE t1, t2;
 
+--echo #
+--echo # MDEV-30024 InnoDB: tried to purge non-delete-marked record
+--echo #            of an index on a virtual column prefix
+--echo #
+
+CREATE TABLE t(a BINARY(8), b CHAR(8) AS (a) VIRTUAL, KEY(b(4)))
+CHARACTER SET utf8 ENGINE=InnoDB;
+INSERT INTO t (a) VALUES (''),('');
+UPDATE t SET a = 'x';
+UPDATE t SET a = '';
+SET GLOBAL innodb_max_purge_lag_wait=0;
+CHECK TABLE t EXTENDED;
+DROP TABLE t;
+
 --source include/wait_until_count_sessions.inc
 SET GLOBAL innodb_purge_rseg_truncate_frequency = @saved_frequency;
diff --git a/mysql-test/suite/perfschema/r/privilege_table_io.result b/mysql-test/suite/perfschema/r/privilege_table_io.result
index 94cc2b33b49..1755c89137d 100644
--- a/mysql-test/suite/perfschema/r/privilege_table_io.result
+++ b/mysql-test/suite/perfschema/r/privilege_table_io.result
@@ -124,6 +124,8 @@ wait/io/table/sql/handler		TABLE	mysql	db	fetch	1
 wait/io/table/sql/handler		TABLE	mysql	proxies_priv	fetch	1
 wait/io/table/sql/handler		TABLE	mysql	proxies_priv	fetch	1
 wait/io/table/sql/handler		TABLE	mysql	proxies_priv	fetch	1
+wait/io/table/sql/handler		TABLE	mysql	proxies_priv	fetch	1
+wait/io/table/sql/handler		TABLE	mysql	proxies_priv	fetch	1
 wait/io/table/sql/handler		TABLE	mysql	roles_mapping	fetch	1
 wait/io/table/sql/handler		TABLE	mysql	tables_priv	fetch	1
 wait/io/table/sql/handler		TABLE	mysql	tables_priv	fetch	1
diff --git a/mysql-test/suite/roles/acl_statistics.result b/mysql-test/suite/roles/acl_statistics.result
index f43f692cc48..172d011400b 100644
--- a/mysql-test/suite/roles/acl_statistics.result
+++ b/mysql-test/suite/roles/acl_statistics.result
@@ -6,7 +6,7 @@ Acl_function_grants	0
 Acl_procedure_grants	0
 Acl_package_spec_grants	0
 Acl_package_body_grants	0
-Acl_proxy_users	2
+Acl_proxy_users	4
 Acl_role_grants	0
 Acl_roles	0
 Acl_table_grants	1
@@ -25,7 +25,7 @@ PROCEDURE_GRANTS
 0
 SELECT count(*) PROXY_USERS from mysql.proxies_priv;
 PROXY_USERS
-2
+4
 SELECT count(*) ROLE_GRANTS from mysql.roles_mapping;
 ROLE_GRANTS
 0
@@ -71,7 +71,7 @@ Acl_function_grants	3
 Acl_procedure_grants	2
 Acl_package_spec_grants	0
 Acl_package_body_grants	0
-Acl_proxy_users	3
+Acl_proxy_users	5
 Acl_role_grants	4
 Acl_roles	2
 Acl_table_grants	3
@@ -90,7 +90,7 @@ PROCEDURE_GRANTS
 2
 SELECT count(*) PROXY_USERS from mysql.proxies_priv;
 PROXY_USERS
-3
+5
 SELECT count(*) ROLE_GRANTS from mysql.roles_mapping;
 ROLE_GRANTS
 4
diff --git a/scripts/mysql_system_tables.sql b/scripts/mysql_system_tables.sql
index cdf3072f090..bc0b6347e86 100644
--- a/scripts/mysql_system_tables.sql
+++ b/scripts/mysql_system_tables.sql
@@ -302,6 +302,7 @@ set @had_proxies_priv_table= @@warning_count != 0;
 -- and for upgrades
 CREATE TEMPORARY TABLE tmp_proxies_priv LIKE proxies_priv;
 INSERT INTO tmp_proxies_priv VALUES ('localhost', 'root', '', '', TRUE, '', now());
+REPLACE INTO tmp_proxies_priv SELECT 'localhost',IFNULL(@auth_root_socket, 'root'), '', '', TRUE, '', now() FROM DUAL;
 INSERT INTO proxies_priv SELECT * FROM tmp_proxies_priv WHERE @had_proxies_priv_table=0;
 DROP TABLE tmp_proxies_priv;
 
diff --git a/scripts/mysql_system_tables_data.sql b/scripts/mysql_system_tables_data.sql
index 28d603cc559..85489e7866e 100644
--- a/scripts/mysql_system_tables_data.sql
+++ b/scripts/mysql_system_tables_data.sql
@@ -46,9 +46,9 @@ IF @auth_root_socket is not null THEN
 
 INSERT INTO global_priv SELECT * FROM tmp_user_nopasswd WHERE @had_user_table=0 AND @auth_root_socket IS NULL;
 INSERT INTO global_priv SELECT * FROM tmp_user_socket WHERE @had_user_table=0 AND @auth_root_socket IS NOT NULL;
-DROP TABLE tmp_user_nopasswd, tmp_user_socket;
 
 CREATE TEMPORARY TABLE tmp_proxies_priv LIKE proxies_priv;
-INSERT INTO tmp_proxies_priv SELECT @current_hostname, 'root', '', '', TRUE, '', now() FROM DUAL WHERE @current_hostname != 'localhost';
+INSERT INTO tmp_proxies_priv SELECT Host, User, '', '', TRUE, '', now() FROM tmp_user_nopasswd WHERE Host != 'localhost' AND @auth_root_socket IS NULL;
+REPLACE INTO tmp_proxies_priv SELECT @current_hostname, IFNULL(@auth_root_socket, 'root'), '', '', TRUE, '', now() FROM DUAL WHERE @current_hostname != 'localhost';
 INSERT INTO  proxies_priv SELECT * FROM tmp_proxies_priv WHERE @had_proxies_priv_table=0;
-DROP TABLE tmp_proxies_priv;
+DROP TABLE tmp_user_nopasswd, tmp_user_socket, tmp_proxies_priv;
diff --git a/sql/item.cc b/sql/item.cc
index 9f964ed019a..bf0426322ed 100644
--- a/sql/item.cc
+++ b/sql/item.cc
@@ -2910,7 +2910,7 @@ Item_sp::execute_impl(THD *thd, Item **args, uint arg_count)
     init_sql_alloc(key_memory_sp_head_call_root, &sp_mem_root,
                    MEM_ROOT_BLOCK_SIZE, 0, MYF(0));
     *sp_query_arena= Query_arena(&sp_mem_root,
-                                 Query_arena::STMT_INITIALIZED_FOR_SP);
+                                 Query_arena::STMT_SP_QUERY_ARGUMENTS);
   }
 
   bool err_status= m_sp->execute_function(thd, args, arg_count,
diff --git a/sql/sql_class.h b/sql/sql_class.h
index c21fd45ec9f..c945d8d974f 100644
--- a/sql/sql_class.h
+++ b/sql/sql_class.h
@@ -1195,11 +1195,21 @@ public:
     Prepared statement: STMT_INITIALIZED -> STMT_PREPARED -> STMT_EXECUTED.
     Stored procedure:   STMT_INITIALIZED_FOR_SP -> STMT_EXECUTED.
     Other statements:   STMT_CONVENTIONAL_EXECUTION never changes.
+
+    Special case for stored procedure arguments: STMT_SP_QUERY_ARGUMENTS
+                        This state never changes and used for objects
+                        whose lifetime is whole duration of function call
+                        (sp_rcontext, it's tables and items. etc). Such objects
+                        should be deallocated after every execution of a stored
+                        routine. Caller's arena/memroot can't be used for
+                        placing such objects since memory allocated on caller's
+                        arena not freed until termination of user's session.
   */
   enum enum_state
   {
     STMT_INITIALIZED= 0, STMT_INITIALIZED_FOR_SP= 1, STMT_PREPARED= 2,
-    STMT_CONVENTIONAL_EXECUTION= 3, STMT_EXECUTED= 4, STMT_ERROR= -1
+    STMT_CONVENTIONAL_EXECUTION= 3, STMT_EXECUTED= 4,
+    STMT_SP_QUERY_ARGUMENTS= 5, STMT_ERROR= -1
   };
 
   enum_state state;
@@ -4473,6 +4483,17 @@ public:
 
   inline Query_arena *activate_stmt_arena_if_needed(Query_arena *backup)
   {
+    if (state == Query_arena::STMT_SP_QUERY_ARGUMENTS)
+      /*
+        Caller uses the arena with state STMT_SP_QUERY_ARGUMENTS for stored
+        routine's parameters. Lifetime of these objects spans a lifetime of
+        stored routine call and freed every time the stored routine execution
+        has been completed. That is the reason why switching to statement's
+        arena is not performed for arguments, else we would observe increasing
+        of memory usage while a stored routine be called over and over again.
+      */
+      return NULL;
+
     /*
       Use the persistent arena if we are in a prepared statement or a stored
       procedure statement and we have not already changed to use this arena.
diff --git a/storage/innobase/row/row0vers.cc b/storage/innobase/row/row0vers.cc
index a4fc32cc5a8..c8913ec9623 100644
--- a/storage/innobase/row/row0vers.cc
+++ b/storage/innobase/row/row0vers.cc
@@ -734,9 +734,16 @@ row_vers_vc_matches_cluster(
 			    && (!compare[v_col->v_pos])) {
 
 				if (ind_field->prefix_len != 0
-				    && !dfield_is_null(field2)
-				    && field2->len > ind_field->prefix_len) {
-					field2->len = ind_field->prefix_len;
+				    && !dfield_is_null(field2)) {
+					field2->len = unsigned(
+						dtype_get_at_most_n_mbchars(
+							field2->type.prtype,
+							field2->type.mbminlen,
+							field2->type.mbmaxlen,
+							ind_field->prefix_len,
+							field2->len,
+							static_cast<char*>
+							(field2->data)));
 				}
 
 				/* The index field mismatch */