Merge 10.4 into 10.5

mysql-test/main/derived_view.result

@@ -3480,3 +3480,24 @@ Warnings:
 Note	1003	select `test`.`t1`.`pk` AS `pk`,`test`.`t1`.`a` AS `a`,3 AS `d`,`test`.`t2`.`b` AS `b`,`test`.`t3`.`c` AS `c` from `test`.`t1` join `test`.`t2` join `test`.`t3` where `test`.`t1`.`a` = 3 and `test`.`t1`.`pk` <= 2
 drop view v1;
 drop table t1,t2,t3;
+#
+# MDEV-25679: view / derived table defined as ordered select with LIMIT
+#
+create table t1 (a int);
+insert into t1 values (3), (7), (1);
+create view v1 as (select a from t1 limit 2) order by a desc;
+(select a from t1 limit 2) order by a desc;
+a
+7
+3
+select * from v1;
+a
+7
+3
+select * from ((select a from t1 limit 2) order by a desc) dt;
+a
+3
+7
+drop view v1;
+drop table t1;
+# End of 10.2 tests

mysql-test/main/derived_view.test

@@ -2273,3 +2273,20 @@ eval explain extended $q;
 
 drop view v1;
 drop table t1,t2,t3;
+
+--echo #
+--echo # MDEV-25679: view / derived table defined as ordered select with LIMIT
+--echo #
+
+create table t1 (a int);
+insert into t1 values (3), (7), (1);
+
+create view v1 as (select a from t1 limit 2) order by a desc;
+(select a from t1 limit 2) order by a desc;
+select * from v1;
+select * from ((select a from t1 limit 2) order by a desc) dt;
+
+drop view v1;
+drop table t1;
+
+--echo # End of 10.2 tests

storage/innobase/log/log0crypt.cc

@@ -1,7 +1,7 @@
 /*****************************************************************************
 
 Copyright (C) 2013, 2015, Google Inc. All Rights Reserved.
-Copyright (C) 2014, 2020, MariaDB Corporation.
+Copyright (C) 2014, 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 the Free Software
@@ -96,6 +96,7 @@ static bool init_crypt_key(crypt_info_t* info, bool upgrade = false)
 			<< info->key_version << " failed (" << rc
 			<< "). Maybe the key or the required encryption "
 			"key management plugin was not found.";
+		info->key_version = ENCRYPTION_KEY_VERSION_INVALID;
 		return false;
 	}
 
@@ -115,6 +116,7 @@ static bool init_crypt_key(crypt_info_t* info, bool upgrade = false)
 	if (err != MY_AES_OK || dst_len != MY_AES_BLOCK_SIZE) {
 		ib::error() << "Getting redo log crypto key failed: err = "
 			<< err << ", len = " << dst_len;
+		info->key_version = ENCRYPTION_KEY_VERSION_INVALID;
 		return false;
 	}
 
@@ -291,6 +293,7 @@ ATTRIBUTE_COLD bool log_crypt_101_read_block(byte* buf, lsn_t start_lsn)
 	for (const crypt_info_t* const end = info + infos_used; info < end;
 	     info++) {
 		if (info->key_version
+		    && info->key_version != ENCRYPTION_KEY_VERSION_INVALID
 		    && info->checkpoint_no == checkpoint_no) {
 			goto found;
 		}
@@ -302,6 +305,9 @@ ATTRIBUTE_COLD bool log_crypt_101_read_block(byte* buf, lsn_t start_lsn)
 	/* MariaDB Server 10.1 would use the first key if it fails to
 	find a key for the current checkpoint. */
 	info = infos;
+	if (info->key_version == ENCRYPTION_KEY_VERSION_INVALID) {
+		return false;
+	}
 found:
 	byte dst[OS_FILE_LOG_BLOCK_SIZE];
 	uint dst_len;

storage/innobase/trx/trx0rseg.cc

@@ -580,6 +580,7 @@ dberr_t trx_rseg_array_init()
 	bool wsrep_xid_in_rseg_found = false;
 #endif
 	mtr_t mtr;
+	dberr_t err = DB_SUCCESS;
 
 	for (ulint rseg_id = 0; rseg_id < TRX_SYS_N_RSEGS; rseg_id++) {
 		mtr.start();
@@ -609,10 +610,11 @@ dberr_t trx_rseg_array_init()
 				ut_ad(rseg->id == rseg_id);
 				ut_ad(!trx_sys.rseg_array[rseg_id]);
 				trx_sys.rseg_array[rseg_id] = rseg;
-				if (dberr_t err = trx_rseg_mem_restore(
+				if ((err = trx_rseg_mem_restore(
-					    rseg, max_trx_id, &mtr)) {
+					     rseg, max_trx_id, &mtr))
+				    != DB_SUCCESS) {
 					mtr.commit();
-					return err;
+					break;
 				}
 #ifdef WITH_WSREP
 				if (!wsrep_sys_xid.is_null() &&
@@ -633,6 +635,21 @@ dberr_t trx_rseg_array_init()
 		mtr.commit();
 	}
 
+	if (err != DB_SUCCESS) {
+		for (ulint rseg_id = 0; rseg_id < TRX_SYS_N_RSEGS; rseg_id++) {
+			if (trx_rseg_t*& rseg = trx_sys.rseg_array[rseg_id]) {
+				while (trx_undo_t* u= UT_LIST_GET_FIRST(
+					     rseg->undo_list)) {
+					UT_LIST_REMOVE(rseg->undo_list, u);
+					ut_free(u);
+				}
+				trx_rseg_mem_free(rseg);
+				rseg = NULL;
+			}
+		}
+		return err;
+	}
+
 #ifdef WITH_WSREP
 	if (!wsrep_sys_xid.is_null()) {
 		/* Upgrade from a version prior to 10.3.5,

storage/innobase/trx/trx0undo.cc

@@ -852,18 +852,11 @@ trx_undo_mem_create_at_db_start(trx_rseg_t *rseg, ulint id, uint32_t page_no,
 	const uint16_t type = mach_read_from_2(TRX_UNDO_PAGE_HDR
 					       + TRX_UNDO_PAGE_TYPE
 					       + block->frame);
-	switch (type) {
+	if (UNIV_UNLIKELY(type > 2)) {
-	case 0:
+corrupted_type:
-	case 2: /* TRX_UNDO_UPDATE */
-		break;
-	case 1: /* TRX_UNDO_INSERT */
-		sql_print_error("InnoDB: upgrade from older version than"
-				" MariaDB 10.3 requires clean shutdown");
-		goto corrupted;
-	default:
 		sql_print_error("InnoDB: unsupported undo header type %u",
 				type);
-	corrupted:
+corrupted:
 		mtr.commit();
 		return nullptr;
 	}
@@ -883,12 +876,21 @@ trx_undo_mem_create_at_db_start(trx_rseg_t *rseg, ulint id, uint32_t page_no,
 	switch (state) {
 	case TRX_UNDO_ACTIVE:
 	case TRX_UNDO_PREPARED:
-		break;
+		if (UNIV_LIKELY(type != 1)) {
+			break;
+		}
+		sql_print_error("InnoDB: upgrade from older version than"
+				" MariaDB 10.3 requires clean shutdown");
+		goto corrupted;
 	default:
 		sql_print_error("InnoDB: unsupported undo header state %u",
 				state);
 		goto corrupted;
 	case TRX_UNDO_TO_PURGE:
+		if (UNIV_UNLIKELY(type == 1)) {
+			goto corrupted_type;
+		}
+		/* fall through */
 	case TRX_UNDO_CACHED:
 		trx_id_t id = mach_read_from_8(TRX_UNDO_TRX_NO + undo_header);
 		if (id >> 48) {