MDEV-12023 Assertion failure sym_node->table != NULL on startup

row_drop_table_for_mysql(): Avoid accessing non-existing dictionary tables.

dict_create_or_check_foreign_constraint_tables(): Add debug instrumentation
for creating and dropping a table before the creation of any non-core
dictionary tables.

trx_purge_add_update_undo_to_history(): Adjust a debug assertion, so that
it will not fail due to the test instrumentation.

mysql-test/include/maybe_debug.combinations

+[debug]
+--enable-gdb
+
+[release]
+--disable-gdb

mysql-test/include/maybe_debug.inc

+# include file for test files that can be run with and without debug
+# having debug and non-debug tests.
+let $have_debug=`select version() like '%debug%'`;

mysql-test/suite.pm

@@ -23,6 +23,9 @@ sub skip_combinations {
   # don't run tests for the wrong platform
   $skip{'include/platform.combinations'} = [ (IS_WINDOWS) ? 'unix' : 'win' ];
 
+  $skip{'include/maybe_debug.combinations'} =
+    [ defined $::mysqld_variables{'debug-dbug'} ? 'release' : 'debug' ];
+
   # as a special case, disable certain include files as a whole
   $skip{'include/not_embedded.inc'} = 'Not run for embedded server'
              if $::opt_embedded_server;

mysql-test/suite/innodb/r/table_flags,4k,debug.rdiff

+--- suite/innodb/r/table_flags.result
++++ suite/innodb/r/table_flags,4k,debug.reject
+@@ -10,81 +10,81 @@
+ CREATE TABLE tp(a INT PRIMARY KEY)ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
+ SYS_TABLES clustered index root page (8):
+ N_RECS=9; LEVEL=0; INDEX_ID=0x0000000000000001
+-header=0x01000003016e (NAME=0x696e66696d756d00)
+-header=0x00002815008d (NAME='SYS_DATAFILES',
+- DB_TRX_ID=0x000000000301,
+- DB_ROLL_PTR=0x81000001320194,
+- ID=0x000000000000000e,
++header=0x0100000301bf (NAME=0x696e66696d756d00)
++header=0x0000301500de (NAME='SYS_DATAFILES',
++ DB_TRX_ID=0x000000000302,
++ DB_ROLL_PTR=0x81000003270194,
++ ID=0x000000000000000f,
+  N_COLS=0x00000002,
+  TYPE=0x00000001,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000040,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000000)
+-header=0x0000101500d5 (NAME='SYS_FOREIGN',
++header=0x000018150126 (NAME='SYS_FOREIGN',
+  DB_TRX_ID=0x000000000300,
+- DB_ROLL_PTR=0x800000012d0110,
+- ID=0x000000000000000b,
++ DB_ROLL_PTR=0x8000000320016f,
++ ID=0x000000000000000c,
+  N_COLS=0x00000004,
+  TYPE=0x00000001,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000040,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000000)
+-header=0x000018150122 (NAME='SYS_FOREIGN_COLS',
++header=0x000020150173 (NAME='SYS_FOREIGN_COLS',
+  DB_TRX_ID=0x000000000300,
+- DB_ROLL_PTR=0x800000012d0201,
+- ID=0x000000000000000c,
++ DB_ROLL_PTR=0x80000003200260,
++ ID=0x000000000000000d,
+  N_COLS=0x00000004,
+  TYPE=0x00000001,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000040,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000000)
+-header=0x0400201501fc (NAME='SYS_TABLESPACES',
+- DB_TRX_ID=0x000000000301,
+- DB_ROLL_PTR=0x81000001320110,
+- ID=0x000000000000000d,
++header=0x040028150209 (NAME='SYS_TABLESPACES',
++ DB_TRX_ID=0x000000000302,
++ DB_ROLL_PTR=0x81000003270110,
++ ID=0x000000000000000e,
+  N_COLS=0x00000003,
+  TYPE=0x00000001,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000040,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000000)
+-header=0x000038150240 (NAME='test/tc',
+- DB_TRX_ID=0x000000000303,
+- DB_ROLL_PTR=0x83000001360110,
+- ID=0x0000000000000010,
++header=0x00003815024d (NAME='test/tc',
++ DB_TRX_ID=0x000000000304,
++ DB_ROLL_PTR=0x830000032c0110,
++ ID=0x0000000000000011,
+  N_COLS=0x80000001,
+  TYPE=0x00000001,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000050,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000002)
+-header=0x0000401502c8 (NAME='test/td',
+- DB_TRX_ID=0x000000000304,
+- DB_ROLL_PTR=0x84000001370110,
+- ID=0x0000000000000011,
++header=0x0000401502d5 (NAME='test/td',
++ DB_TRX_ID=0x000000000305,
++ DB_ROLL_PTR=0x840000032d0110,
++ ID=0x0000000000000012,
+  N_COLS=0x80000001,
+  TYPE=0x00000021,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000050,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000003)
+-header=0x0000501501b8 (NAME='test/tp',
+- DB_TRX_ID=0x000000000306,
+- DB_ROLL_PTR=0x86000001390110,
+- ID=0x0000000000000013,
++header=0x00005015008d (NAME='test/tp',
++ DB_TRX_ID=0x000000000307,
++ DB_ROLL_PTR=0x86000003300110,
++ ID=0x0000000000000014,
+  N_COLS=0x80000001,
+  TYPE=0x00000021,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000050,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000005)
+-header=0x000030150284 (NAME='test/tr',
+- DB_TRX_ID=0x000000000302,
+- DB_ROLL_PTR=0x82000001350110,
+- ID=0x000000000000000f,
++header=0x000010150291 (NAME='test/tr',
++ DB_TRX_ID=0x000000000303,
++ DB_ROLL_PTR=0x820000032b0110,
++ ID=0x0000000000000010,
+  N_COLS=0x00000001,
+  TYPE=0x00000001,
+  MIX_ID=0x0000000000000000,
+@@ -92,9 +92,9 @@
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000001)
+ header=0x000048150074 (NAME='test/tz',
+- DB_TRX_ID=0x000000000305,
+- DB_ROLL_PTR=0x85000001380110,
+- ID=0x0000000000000012,
++ DB_TRX_ID=0x000000000306,
++ DB_ROLL_PTR=0x850000032e0110,
++ ID=0x0000000000000013,
+  N_COLS=0x80000001,
+  TYPE=0x00000023,
+  MIX_ID=0x0000000000000000,

mysql-test/suite/innodb/r/table_flags,8k,debug.rdiff

+--- suite/innodb/r/table_flags.result
++++ suite/innodb/r/table_flags,8k,debug.reject
+@@ -10,81 +10,81 @@
+ CREATE TABLE tp(a INT PRIMARY KEY)ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
+ SYS_TABLES clustered index root page (8):
+ N_RECS=9; LEVEL=0; INDEX_ID=0x0000000000000001
+-header=0x01000003016e (NAME=0x696e66696d756d00)
+-header=0x00002815008d (NAME='SYS_DATAFILES',
+- DB_TRX_ID=0x000000000301,
+- DB_ROLL_PTR=0x81000001320194,
+- ID=0x000000000000000e,
++header=0x0100000301bf (NAME=0x696e66696d756d00)
++header=0x0000301500de (NAME='SYS_DATAFILES',
++ DB_TRX_ID=0x000000000302,
++ DB_ROLL_PTR=0x81000001d80194,
++ ID=0x000000000000000f,
+  N_COLS=0x00000002,
+  TYPE=0x00000001,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000040,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000000)
+-header=0x0000101500d5 (NAME='SYS_FOREIGN',
++header=0x000018150126 (NAME='SYS_FOREIGN',
+  DB_TRX_ID=0x000000000300,
+- DB_ROLL_PTR=0x800000012d0110,
+- ID=0x000000000000000b,
++ DB_ROLL_PTR=0x80000001d1016f,
++ ID=0x000000000000000c,
+  N_COLS=0x00000004,
+  TYPE=0x00000001,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000040,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000000)
+-header=0x000018150122 (NAME='SYS_FOREIGN_COLS',
++header=0x000020150173 (NAME='SYS_FOREIGN_COLS',
+  DB_TRX_ID=0x000000000300,
+- DB_ROLL_PTR=0x800000012d0201,
+- ID=0x000000000000000c,
++ DB_ROLL_PTR=0x80000001d10260,
++ ID=0x000000000000000d,
+  N_COLS=0x00000004,
+  TYPE=0x00000001,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000040,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000000)
+-header=0x0400201501fc (NAME='SYS_TABLESPACES',
+- DB_TRX_ID=0x000000000301,
+- DB_ROLL_PTR=0x81000001320110,
+- ID=0x000000000000000d,
++header=0x040028150209 (NAME='SYS_TABLESPACES',
++ DB_TRX_ID=0x000000000302,
++ DB_ROLL_PTR=0x81000001d80110,
++ ID=0x000000000000000e,
+  N_COLS=0x00000003,
+  TYPE=0x00000001,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000040,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000000)
+-header=0x000038150240 (NAME='test/tc',
+- DB_TRX_ID=0x000000000303,
+- DB_ROLL_PTR=0x83000001360110,
+- ID=0x0000000000000010,
++header=0x00003815024d (NAME='test/tc',
++ DB_TRX_ID=0x000000000304,
++ DB_ROLL_PTR=0x83000001dc0110,
++ ID=0x0000000000000011,
+  N_COLS=0x80000001,
+  TYPE=0x00000001,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000050,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000002)
+-header=0x0000401502c8 (NAME='test/td',
+- DB_TRX_ID=0x000000000304,
+- DB_ROLL_PTR=0x84000001370110,
+- ID=0x0000000000000011,
++header=0x0000401502d5 (NAME='test/td',
++ DB_TRX_ID=0x000000000305,
++ DB_ROLL_PTR=0x84000001dd0110,
++ ID=0x0000000000000012,
+  N_COLS=0x80000001,
+  TYPE=0x00000021,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000050,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000003)
+-header=0x0000501501b8 (NAME='test/tp',
+- DB_TRX_ID=0x000000000306,
+- DB_ROLL_PTR=0x86000001390110,
+- ID=0x0000000000000013,
++header=0x00005015008d (NAME='test/tp',
++ DB_TRX_ID=0x000000000307,
++ DB_ROLL_PTR=0x86000001df0110,
++ ID=0x0000000000000014,
+  N_COLS=0x80000001,
+  TYPE=0x00000021,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000050,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000005)
+-header=0x000030150284 (NAME='test/tr',
+- DB_TRX_ID=0x000000000302,
+- DB_ROLL_PTR=0x82000001350110,
+- ID=0x000000000000000f,
++header=0x000010150291 (NAME='test/tr',
++ DB_TRX_ID=0x000000000303,
++ DB_ROLL_PTR=0x82000001db0110,
++ ID=0x0000000000000010,
+  N_COLS=0x00000001,
+  TYPE=0x00000001,
+  MIX_ID=0x0000000000000000,
+@@ -92,9 +92,9 @@
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000001)
+ header=0x000048150074 (NAME='test/tz',
+- DB_TRX_ID=0x000000000305,
+- DB_ROLL_PTR=0x85000001380110,
+- ID=0x0000000000000012,
++ DB_TRX_ID=0x000000000306,
++ DB_ROLL_PTR=0x85000001de0110,
++ ID=0x0000000000000013,
+  N_COLS=0x80000001,
+  TYPE=0x00000023,
+  MIX_ID=0x0000000000000000,

mysql-test/suite/innodb/r/table_flags,debug.rdiff

+--- suite/innodb/r/table_flags.result
++++ suite/innodb/r/table_flags,debug.reject
+@@ -10,81 +10,81 @@
+ CREATE TABLE tp(a INT PRIMARY KEY)ENGINE=InnoDB ROW_FORMAT=DYNAMIC;
+ SYS_TABLES clustered index root page (8):
+ N_RECS=9; LEVEL=0; INDEX_ID=0x0000000000000001
+-header=0x01000003016e (NAME=0x696e66696d756d00)
+-header=0x00002815008d (NAME='SYS_DATAFILES',
+- DB_TRX_ID=0x000000000301,
+- DB_ROLL_PTR=0x81000001320194,
+- ID=0x000000000000000e,
++header=0x0100000301bf (NAME=0x696e66696d756d00)
++header=0x0000301500de (NAME='SYS_DATAFILES',
++ DB_TRX_ID=0x000000000302,
++ DB_ROLL_PTR=0x81000001330194,
++ ID=0x000000000000000f,
+  N_COLS=0x00000002,
+  TYPE=0x00000001,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000040,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000000)
+-header=0x0000101500d5 (NAME='SYS_FOREIGN',
++header=0x000018150126 (NAME='SYS_FOREIGN',
+  DB_TRX_ID=0x000000000300,
+- DB_ROLL_PTR=0x800000012d0110,
+- ID=0x000000000000000b,
++ DB_ROLL_PTR=0x800000012d016f,
++ ID=0x000000000000000c,
+  N_COLS=0x00000004,
+  TYPE=0x00000001,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000040,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000000)
+-header=0x000018150122 (NAME='SYS_FOREIGN_COLS',
++header=0x000020150173 (NAME='SYS_FOREIGN_COLS',
+  DB_TRX_ID=0x000000000300,
+- DB_ROLL_PTR=0x800000012d0201,
+- ID=0x000000000000000c,
++ DB_ROLL_PTR=0x800000012d0260,
++ ID=0x000000000000000d,
+  N_COLS=0x00000004,
+  TYPE=0x00000001,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000040,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000000)
+-header=0x0400201501fc (NAME='SYS_TABLESPACES',
+- DB_TRX_ID=0x000000000301,
+- DB_ROLL_PTR=0x81000001320110,
+- ID=0x000000000000000d,
++header=0x040028150209 (NAME='SYS_TABLESPACES',
++ DB_TRX_ID=0x000000000302,
++ DB_ROLL_PTR=0x81000001330110,
++ ID=0x000000000000000e,
+  N_COLS=0x00000003,
+  TYPE=0x00000001,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000040,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000000)
+-header=0x000038150240 (NAME='test/tc',
+- DB_TRX_ID=0x000000000303,
+- DB_ROLL_PTR=0x83000001360110,
+- ID=0x0000000000000010,
++header=0x00003815024d (NAME='test/tc',
++ DB_TRX_ID=0x000000000304,
++ DB_ROLL_PTR=0x83000001370110,
++ ID=0x0000000000000011,
+  N_COLS=0x80000001,
+  TYPE=0x00000001,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000050,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000002)
+-header=0x0000401502c8 (NAME='test/td',
+- DB_TRX_ID=0x000000000304,
+- DB_ROLL_PTR=0x84000001370110,
+- ID=0x0000000000000011,
++header=0x0000401502d5 (NAME='test/td',
++ DB_TRX_ID=0x000000000305,
++ DB_ROLL_PTR=0x84000001380110,
++ ID=0x0000000000000012,
+  N_COLS=0x80000001,
+  TYPE=0x00000021,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000050,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000003)
+-header=0x0000501501b8 (NAME='test/tp',
+- DB_TRX_ID=0x000000000306,
+- DB_ROLL_PTR=0x86000001390110,
+- ID=0x0000000000000013,
++header=0x00005015008d (NAME='test/tp',
++ DB_TRX_ID=0x000000000307,
++ DB_ROLL_PTR=0x860000013a0110,
++ ID=0x0000000000000014,
+  N_COLS=0x80000001,
+  TYPE=0x00000021,
+  MIX_ID=0x0000000000000000,
+  MIX_LEN=0x00000050,
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000005)
+-header=0x000030150284 (NAME='test/tr',
+- DB_TRX_ID=0x000000000302,
+- DB_ROLL_PTR=0x82000001350110,
+- ID=0x000000000000000f,
++header=0x000010150291 (NAME='test/tr',
++ DB_TRX_ID=0x000000000303,
++ DB_ROLL_PTR=0x82000001360110,
++ ID=0x0000000000000010,
+  N_COLS=0x00000001,
+  TYPE=0x00000001,
+  MIX_ID=0x0000000000000000,
+@@ -92,9 +92,9 @@
+  CLUSTER_NAME=NULL(0 bytes),
+  SPACE=0x00000001)
+ header=0x000048150074 (NAME='test/tz',
+- DB_TRX_ID=0x000000000305,
+- DB_ROLL_PTR=0x85000001380110,
+- ID=0x0000000000000012,
++ DB_TRX_ID=0x000000000306,
++ DB_ROLL_PTR=0x85000001390110,
++ ID=0x0000000000000013,
+  N_COLS=0x80000001,
+  TYPE=0x00000023,
+  MIX_ID=0x0000000000000000,

mysql-test/suite/innodb/t/table_flags.test

 --source include/innodb_page_size.inc
 # Embedded server tests do not support restarting
 --source include/not_embedded.inc
+--source include/maybe_debug.inc
 
 --disable_query_log
 call mtr.add_suppression("InnoDB: New log files created, LSN=");
@@ -22,6 +23,9 @@ let bugdir= $MYSQLTEST_VARDIR/tmp/table_flags;
 --let $d=--innodb-data-home-dir=$bugdir --innodb-log-group-home-dir=$bugdir
 --let $d=$d --innodb-data-file-path=ibdata1:10M:autoextend
 --let $d=$d --innodb-undo-tablespaces=0
+if ($have_debug) {
+--let $d=$d --debug=d,create_and_drop_garbage
+}
 --let $restart_parameters=$d --innodb-stats-persistent=0 --innodb-file-format=1
 --source include/restart_mysqld.inc
 

storage/innobase/dict/dict0crea.cc

 /*****************************************************************************
 
 Copyright (c) 1996, 2016, Oracle and/or its affiliates. All Rights Reserved.
+Copyright (c) 2018, 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
@@ -1360,6 +1361,21 @@ dict_create_or_check_foreign_constraint_tables(void)
 
 	row_mysql_lock_data_dictionary(trx);
 
+	DBUG_EXECUTE_IF(
+		"create_and_drop_garbage",
+		err = que_eval_sql(
+			NULL,
+			"PROCEDURE CREATE_GARBAGE_TABLE_PROC () IS\n"
+			"BEGIN\n"
+			"CREATE TABLE\n"
+			"\"test/#sql-ib-garbage\"(ID CHAR);\n"
+			"CREATE UNIQUE CLUSTERED INDEX PRIMARY"
+			" ON \"test/#sql-ib-garbage\"(ID);\n"
+			"END;\n", FALSE, trx);
+		ut_ad(err == DB_SUCCESS);
+		row_drop_table_for_mysql("test/#sql-ib-garbage",
+					 trx, TRUE, TRUE););
+
 	/* Check which incomplete table definition to drop. */
 
 	if (sys_foreign_err == DB_CORRUPTION) {

storage/innobase/row/row0mysql.cc

@@ -45,6 +45,7 @@ Created 9/17/2000 Heikki Tuuri
 #include "dict0dict.h"
 #include "dict0crea.h"
 #include "dict0load.h"
+#include "dict0priv.h"
 #include "dict0boot.h"
 #include "dict0stats.h"
 #include "dict0stats_bg.h"
@@ -4137,95 +4138,87 @@ row_drop_table_for_mysql(
 
 	info = pars_info_create();
 
-	pars_info_add_str_literal(info, "table_name", name);
+	pars_info_add_str_literal(info, "name", name);
 
-	err = que_eval_sql(info,
-			   "PROCEDURE DROP_TABLE_PROC () IS\n"
-			   "sys_foreign_id CHAR;\n"
-			   "table_id CHAR;\n"
-			   "index_id CHAR;\n"
-			   "foreign_id CHAR;\n"
-			   "space_id INT;\n"
-			   "found INT;\n"
+	if (strcmp(name, "SYS_FOREIGN") && strcmp(name, "SYS_FOREIGN_COLS")
+	    && dict_table_get_low("SYS_FOREIGN")
+	    && dict_table_get_low("SYS_FOREIGN_COLS")) {
+		err = que_eval_sql(
+			info,
+			"PROCEDURE DROP_FOREIGN_PROC () IS\n"
+			"fid CHAR;\n"
 
-			   "DECLARE CURSOR cur_fk IS\n"
-			   "SELECT ID FROM SYS_FOREIGN\n"
-			   "WHERE FOR_NAME = :table_name\n"
-			   "AND TO_BINARY(FOR_NAME)\n"
-			   "  = TO_BINARY(:table_name)\n"
-			   "LOCK IN SHARE MODE;\n"
+			"DECLARE CURSOR fk IS\n"
+			"SELECT ID FROM SYS_FOREIGN\n"
+			"WHERE FOR_NAME = :name\n"
+			"AND TO_BINARY(FOR_NAME) = TO_BINARY(:name)\n"
+			"FOR UPDATE;\n"
 
-			   "DECLARE CURSOR cur_idx IS\n"
-			   "SELECT ID FROM SYS_INDEXES\n"
-			   "WHERE TABLE_ID = table_id\n"
-			   "LOCK IN SHARE MODE;\n"
+			"BEGIN\n"
+			"OPEN fk;\n"
+			"WHILE 1 = 1 LOOP\n"
+			"	FETCH fk INTO fid;\n"
+			"	IF (SQL % NOTFOUND) THEN RETURN; END IF;\n"
+			"	DELETE FROM SYS_FOREIGN_COLS WHERE ID = fid;\n"
+			"	DELETE FROM SYS_FOREIGN WHERE ID = fid;\n"
+			"END LOOP;\n"
+			"CLOSE fk;\n"
+			"END;\n", FALSE, trx);
+		if (err == DB_SUCCESS) {
+			info = pars_info_create();
+			pars_info_add_str_literal(info, "name", name);
+			goto do_drop;
+		}
+	} else {
+do_drop:
+		err = que_eval_sql(
+			info,
+			"PROCEDURE DROP_TABLE_PROC () IS\n"
+			"table_id CHAR;\n"
+			"index_id CHAR;\n"
 
-			   "BEGIN\n"
-			   "SELECT ID INTO table_id\n"
-			   "FROM SYS_TABLES\n"
-			   "WHERE NAME = :table_name\n"
-			   "LOCK IN SHARE MODE;\n"
-			   "IF (SQL % NOTFOUND) THEN\n"
-			   "       RETURN;\n"
-			   "END IF;\n"
-			   "SELECT SPACE INTO space_id\n"
-			   "FROM SYS_TABLES\n"
-			   "WHERE NAME = :table_name;\n"
-			   "IF (SQL % NOTFOUND) THEN\n"
-			   "       RETURN;\n"
-			   "END IF;\n"
-			   "found := 1;\n"
-			   "SELECT ID INTO sys_foreign_id\n"
-			   "FROM SYS_TABLES\n"
-			   "WHERE NAME = 'SYS_FOREIGN'\n"
-			   "LOCK IN SHARE MODE;\n"
-			   "IF (SQL % NOTFOUND) THEN\n"
-			   "       found := 0;\n"
-			   "END IF;\n"
-			   "IF (:table_name = 'SYS_FOREIGN') THEN\n"
-			   "       found := 0;\n"
-			   "END IF;\n"
-			   "IF (:table_name = 'SYS_FOREIGN_COLS') THEN\n"
-			   "       found := 0;\n"
-			   "END IF;\n"
-			   "OPEN cur_fk;\n"
-			   "WHILE found = 1 LOOP\n"
-			   "       FETCH cur_fk INTO foreign_id;\n"
-			   "       IF (SQL % NOTFOUND) THEN\n"
-			   "               found := 0;\n"
-			   "       ELSE\n"
-			   "               DELETE FROM SYS_FOREIGN_COLS\n"
-			   "               WHERE ID = foreign_id;\n"
-			   "               DELETE FROM SYS_FOREIGN\n"
-			   "               WHERE ID = foreign_id;\n"
-			   "       END IF;\n"
-			   "END LOOP;\n"
-			   "CLOSE cur_fk;\n"
-			   "found := 1;\n"
-			   "OPEN cur_idx;\n"
-			   "WHILE found = 1 LOOP\n"
-			   "       FETCH cur_idx INTO index_id;\n"
-			   "       IF (SQL % NOTFOUND) THEN\n"
-			   "               found := 0;\n"
-			   "       ELSE\n"
-			   "               DELETE FROM SYS_FIELDS\n"
-			   "               WHERE INDEX_ID = index_id;\n"
-			   "               DELETE FROM SYS_INDEXES\n"
-			   "               WHERE ID = index_id\n"
-			   "               AND TABLE_ID = table_id;\n"
-			   "       END IF;\n"
-			   "END LOOP;\n"
-			   "CLOSE cur_idx;\n"
-			   "DELETE FROM SYS_TABLESPACES\n"
-			   "WHERE SPACE = space_id;\n"
-			   "DELETE FROM SYS_DATAFILES\n"
-			   "WHERE SPACE = space_id;\n"
-			   "DELETE FROM SYS_COLUMNS\n"
-			   "WHERE TABLE_ID = table_id;\n"
-			   "DELETE FROM SYS_TABLES\n"
-			   "WHERE NAME = :table_name;\n"
-			   "END;\n"
-			   , FALSE, trx);
+			"DECLARE CURSOR cur_idx IS\n"
+			"SELECT ID FROM SYS_INDEXES\n"
+			"WHERE TABLE_ID = table_id\n"
+			"FOR UPDATE;\n"
+
+			"BEGIN\n"
+			"SELECT ID INTO table_id\n"
+			"FROM SYS_TABLES WHERE NAME = :name FOR UPDATE;\n"
+			"IF (SQL % NOTFOUND) THEN RETURN; END IF;\n"
+			"OPEN cur_idx;\n"
+			"WHILE 1 = 1 LOOP\n"
+			"	FETCH cur_idx INTO index_id;\n"
+			"	IF (SQL % NOTFOUND) THEN EXIT; END IF;\n"
+			"	DELETE FROM SYS_FIELDS\n"
+			"	WHERE INDEX_ID = index_id;\n"
+			"	DELETE FROM SYS_INDEXES\n"
+			"	WHERE ID = index_id AND TABLE_ID = table_id;\n"
+			"END LOOP;\n"
+			"CLOSE cur_idx;\n"
+
+			"DELETE FROM SYS_COLUMNS WHERE TABLE_ID = table_id;\n"
+			"DELETE FROM SYS_TABLES WHERE NAME = :name;\n"
+
+			"END;\n", FALSE, trx);
+
+		if (err == DB_SUCCESS && table->space
+		    && dict_table_get_low("SYS_TABLESPACES")
+		    && dict_table_get_low("SYS_DATAFILES")) {
+			info = pars_info_create();
+			pars_info_add_int4_literal(info, "id",
+						   lint(table->space));
+			err = que_eval_sql(
+				info,
+				"PROCEDURE DROP_SPACE_PROC () IS\n"
+				"BEGIN\n"
+				"DELETE FROM SYS_TABLESPACES\n"
+				"WHERE SPACE = :id;\n"
+				"DELETE FROM SYS_DATAFILES\n"
+				"WHERE SPACE = :id;\n"
+				"END;\n", FALSE, trx);
+		}
+	}
 
 	switch (err) {
 		ibool	is_temp;

storage/innobase/trx/trx0purge.cc

@@ -251,7 +251,7 @@ trx_purge_add_update_undo_to_history(
 	in fast shutdown, we may roll back transactions (trx->undo_no==0)
 	in THD::cleanup() invoked from unlink_thd(). */
 	ut_ad(srv_undo_sources
-	      || ((srv_startup_is_before_trx_rollback_phase
+	      || ((srv_is_being_started
 		   || trx_rollback_or_clean_is_active)
 		  && purge_sys->state == PURGE_STATE_INIT)
 	      || (trx->undo_no == 0 && srv_fast_shutdown));

storage/xtradb/dict/dict0crea.cc

 /*****************************************************************************
 
 Copyright (c) 1996, 2016, Oracle and/or its affiliates. All Rights Reserved.
-Copyright (c) 2017, MariaDB Corporation.
+Copyright (c) 2017, 2018, 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
@@ -1361,6 +1361,21 @@ dict_create_or_check_foreign_constraint_tables(void)
 
 	row_mysql_lock_data_dictionary(trx);
 
+	DBUG_EXECUTE_IF(
+		"create_and_drop_garbage",
+		err = que_eval_sql(
+			NULL,
+			"PROCEDURE CREATE_GARBAGE_TABLE_PROC () IS\n"
+			"BEGIN\n"
+			"CREATE TABLE\n"
+			"\"test/#sql-ib-garbage\"(ID CHAR);\n"
+			"CREATE UNIQUE CLUSTERED INDEX PRIMARY"
+			" ON \"test/#sql-ib-garbage\"(ID);\n"
+			"END;\n", FALSE, trx);
+		ut_ad(err == DB_SUCCESS);
+		row_drop_table_for_mysql("test/#sql-ib-garbage",
+					 trx, TRUE, TRUE););
+
 	/* Check which incomplete table definition to drop. */
 
 	if (sys_foreign_err == DB_CORRUPTION) {

storage/xtradb/row/row0mysql.cc

@@ -4162,95 +4162,87 @@ row_drop_table_for_mysql(
 
 	info = pars_info_create();
 
-	pars_info_add_str_literal(info, "table_name", name);
+	pars_info_add_str_literal(info, "name", name);
 
-	err = que_eval_sql(info,
-			   "PROCEDURE DROP_TABLE_PROC () IS\n"
-			   "sys_foreign_id CHAR;\n"
-			   "table_id CHAR;\n"
-			   "index_id CHAR;\n"
-			   "foreign_id CHAR;\n"
-			   "space_id INT;\n"
-			   "found INT;\n"
+	if (strcmp(name, "SYS_FOREIGN") && strcmp(name, "SYS_FOREIGN_COLS")
+	    && dict_table_get_low("SYS_FOREIGN")
+	    && dict_table_get_low("SYS_FOREIGN_COLS")) {
+		err = que_eval_sql(
+			info,
+			"PROCEDURE DROP_FOREIGN_PROC () IS\n"
+			"fid CHAR;\n"
 
-			   "DECLARE CURSOR cur_fk IS\n"
-			   "SELECT ID FROM SYS_FOREIGN\n"
-			   "WHERE FOR_NAME = :table_name\n"
-			   "AND TO_BINARY(FOR_NAME)\n"
-			   "  = TO_BINARY(:table_name)\n"
-			   "LOCK IN SHARE MODE;\n"
+			"DECLARE CURSOR fk IS\n"
+			"SELECT ID FROM SYS_FOREIGN\n"
+			"WHERE FOR_NAME = :name\n"
+			"AND TO_BINARY(FOR_NAME) = TO_BINARY(:name)\n"
+			"FOR UPDATE;\n"
 
-			   "DECLARE CURSOR cur_idx IS\n"
-			   "SELECT ID FROM SYS_INDEXES\n"
-			   "WHERE TABLE_ID = table_id\n"
-			   "LOCK IN SHARE MODE;\n"
+			"BEGIN\n"
+			"OPEN fk;\n"
+			"WHILE 1 = 1 LOOP\n"
+			"	FETCH fk INTO fid;\n"
+			"	IF (SQL % NOTFOUND) THEN RETURN; END IF;\n"
+			"	DELETE FROM SYS_FOREIGN_COLS WHERE ID = fid;\n"
+			"	DELETE FROM SYS_FOREIGN WHERE ID = fid;\n"
+			"END LOOP;\n"
+			"CLOSE fk;\n"
+			"END;\n", FALSE, trx);
+		if (err == DB_SUCCESS) {
+			info = pars_info_create();
+			pars_info_add_str_literal(info, "name", name);
+			goto do_drop;
+		}
+	} else {
+do_drop:
+		err = que_eval_sql(
+			info,
+			"PROCEDURE DROP_TABLE_PROC () IS\n"
+			"table_id CHAR;\n"
+			"index_id CHAR;\n"
 
-			   "BEGIN\n"
-			   "SELECT ID INTO table_id\n"
-			   "FROM SYS_TABLES\n"
-			   "WHERE NAME = :table_name\n"
-			   "LOCK IN SHARE MODE;\n"
-			   "IF (SQL % NOTFOUND) THEN\n"
-			   "       RETURN;\n"
-			   "END IF;\n"
-			   "SELECT SPACE INTO space_id\n"
-			   "FROM SYS_TABLES\n"
-			   "WHERE NAME = :table_name;\n"
-			   "IF (SQL % NOTFOUND) THEN\n"
-			   "       RETURN;\n"
-			   "END IF;\n"
-			   "found := 1;\n"
-			   "SELECT ID INTO sys_foreign_id\n"
-			   "FROM SYS_TABLES\n"
-			   "WHERE NAME = 'SYS_FOREIGN'\n"
-			   "LOCK IN SHARE MODE;\n"
-			   "IF (SQL % NOTFOUND) THEN\n"
-			   "       found := 0;\n"
-			   "END IF;\n"
-			   "IF (:table_name = 'SYS_FOREIGN') THEN\n"
-			   "       found := 0;\n"
-			   "END IF;\n"
-			   "IF (:table_name = 'SYS_FOREIGN_COLS') THEN\n"
-			   "       found := 0;\n"
-			   "END IF;\n"
-			   "OPEN cur_fk;\n"
-			   "WHILE found = 1 LOOP\n"
-			   "       FETCH cur_fk INTO foreign_id;\n"
-			   "       IF (SQL % NOTFOUND) THEN\n"
-			   "               found := 0;\n"
-			   "       ELSE\n"
-			   "               DELETE FROM SYS_FOREIGN_COLS\n"
-			   "               WHERE ID = foreign_id;\n"
-			   "               DELETE FROM SYS_FOREIGN\n"
-			   "               WHERE ID = foreign_id;\n"
-			   "       END IF;\n"
-			   "END LOOP;\n"
-			   "CLOSE cur_fk;\n"
-			   "found := 1;\n"
-			   "OPEN cur_idx;\n"
-			   "WHILE found = 1 LOOP\n"
-			   "       FETCH cur_idx INTO index_id;\n"
-			   "       IF (SQL % NOTFOUND) THEN\n"
-			   "               found := 0;\n"
-			   "       ELSE\n"
-			   "               DELETE FROM SYS_FIELDS\n"
-			   "               WHERE INDEX_ID = index_id;\n"
-			   "               DELETE FROM SYS_INDEXES\n"
-			   "               WHERE ID = index_id\n"
-			   "               AND TABLE_ID = table_id;\n"
-			   "       END IF;\n"
-			   "END LOOP;\n"
-			   "CLOSE cur_idx;\n"
-			   "DELETE FROM SYS_TABLESPACES\n"
-			   "WHERE SPACE = space_id;\n"
-			   "DELETE FROM SYS_DATAFILES\n"
-			   "WHERE SPACE = space_id;\n"
-			   "DELETE FROM SYS_COLUMNS\n"
-			   "WHERE TABLE_ID = table_id;\n"
-			   "DELETE FROM SYS_TABLES\n"
-			   "WHERE NAME = :table_name;\n"
-			   "END;\n"
-			   , FALSE, trx);
+			"DECLARE CURSOR cur_idx IS\n"
+			"SELECT ID FROM SYS_INDEXES\n"
+			"WHERE TABLE_ID = table_id\n"
+			"FOR UPDATE;\n"
+
+			"BEGIN\n"
+			"SELECT ID INTO table_id\n"
+			"FROM SYS_TABLES WHERE NAME = :name FOR UPDATE;\n"
+			"IF (SQL % NOTFOUND) THEN RETURN; END IF;\n"
+			"OPEN cur_idx;\n"
+			"WHILE 1 = 1 LOOP\n"
+			"	FETCH cur_idx INTO index_id;\n"
+			"	IF (SQL % NOTFOUND) THEN EXIT; END IF;\n"
+			"	DELETE FROM SYS_FIELDS\n"
+			"	WHERE INDEX_ID = index_id;\n"
+			"	DELETE FROM SYS_INDEXES\n"
+			"	WHERE ID = index_id AND TABLE_ID = table_id;\n"
+			"END LOOP;\n"
+			"CLOSE cur_idx;\n"
+
+			"DELETE FROM SYS_COLUMNS WHERE TABLE_ID = table_id;\n"
+			"DELETE FROM SYS_TABLES WHERE NAME = :name;\n"
+
+			"END;\n", FALSE, trx);
+
+		if (err == DB_SUCCESS && table->space
+		    && dict_table_get_low("SYS_TABLESPACES")
+		    && dict_table_get_low("SYS_DATAFILES")) {
+			info = pars_info_create();
+			pars_info_add_int4_literal(info, "id",
+						   lint(table->space));
+			err = que_eval_sql(
+				info,
+				"PROCEDURE DROP_SPACE_PROC () IS\n"
+				"BEGIN\n"
+				"DELETE FROM SYS_TABLESPACES\n"
+				"WHERE SPACE = :id;\n"
+				"DELETE FROM SYS_DATAFILES\n"
+				"WHERE SPACE = :id;\n"
+				"END;\n", FALSE, trx);
+		}
+	}
 
 	switch (err) {
 		ibool	is_temp;
@@ -4395,7 +4387,6 @@ row_drop_table_for_mysql(
 
 	case DB_OUT_OF_FILE_SPACE:
 		err = DB_MUST_GET_MORE_FILE_SPACE;
-
 		trx->error_state = err;
 		row_mysql_handle_errors(&err, trx, NULL, NULL);
 

storage/xtradb/trx/trx0purge.cc

@@ -255,7 +255,7 @@ trx_purge_add_update_undo_to_history(
 	in fast shutdown, we may roll back transactions (trx->undo_no==0)
 	in THD::cleanup() invoked from unlink_thd(). */
 	ut_ad(srv_undo_sources
-	      || ((srv_startup_is_before_trx_rollback_phase
+	      || ((srv_is_being_started
 		   || trx_rollback_or_clean_is_active)
 		  && purge_sys->state == PURGE_STATE_INIT)
 	      || (trx->undo_no == 0 && srv_fast_shutdown));