branches/5.1: Bug#43203: Overflow from auto incrementing causes server segv

It was not a SIGSEGV but an assertion failure. The assertion was checking
the invariant that *first_value passed in by MySQL doesn't contain a value
that is greater than the max value for that type. The assertion has been
changed to a check and if the value is greater than the max we report a
generic AUTOINC failure.

rb://93
Approved by Heikki

handler/ha_innodb.cc

@@ -7663,11 +7663,13 @@ ha_innobase::get_auto_increment(
 
 		prebuilt->autoinc_last_value = next_value;
 
-		ut_a(prebuilt->autoinc_last_value >= *first_value);
-
-		/* Update the table autoinc variable */
-		dict_table_autoinc_update_if_greater(
-			prebuilt->table, prebuilt->autoinc_last_value);
+		if (prebuilt->autoinc_last_value < *first_value) {
+			*first_value = (~(ulonglong) 0);
+		} else {
+			/* Update the table autoinc variable */
+			dict_table_autoinc_update_if_greater(
+				prebuilt->table, prebuilt->autoinc_last_value);
+		}
 	} else {
 		/* This will force write_row() into attempting an update
 		of the table's AUTOINC counter. */

mysql-test/innodb-autoinc.result

@@ -848,3 +848,22 @@ t1	CREATE TABLE `t1` (
 ) ENGINE=InnoDB AUTO_INCREMENT=58 DEFAULT CHARSET=latin1
 DROP TABLE t1;
 DROP TABLE t2;
+DROP TABLE IF EXISTS t1;
+Warnings:
+Note	1051	Unknown table 't1'
+DROP TABLE IF EXISTS t2;
+Warnings:
+Note	1051	Unknown table 't2'
+CREATE TABLE t1(
+c1 INT(10) UNSIGNED NOT NULL AUTO_INCREMENT
+PRIMARY KEY) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL);
+CREATE TABLE t2(
+c1 TINYINT(3) UNSIGNED NOT NULL AUTO_INCREMENT
+PRIMARY KEY) ENGINE=InnoDB;
+INSERT INTO t2 SELECT c1 FROM t1;
+Got one of the listed errors
+INSERT INTO t2 SELECT NULL FROM t1;
+Got one of the listed errors
+DROP TABLE t1;
+DROP TABLE t2;

mysql-test/innodb-autoinc.test

@@ -418,7 +418,7 @@ INSERT INTO t1 VALUES(NULL, 4);
 SELECT * FROM t1;
 DROP TABLE t1;
 
-# 
+#
 # Bug# 42714: AUTOINC column calculated next value not greater than highest
 # value stored in table.
 #
@@ -459,3 +459,22 @@ SELECT * FROM t1;
 SHOW CREATE TABLE t1;
 DROP TABLE t1;
 DROP TABLE t2;
+#
+# 43203: Overflow from auto incrementing causes server segv
+#
+
+DROP TABLE IF EXISTS t1;
+DROP TABLE IF EXISTS t2;
+CREATE TABLE t1(
+   c1 INT(10) UNSIGNED NOT NULL AUTO_INCREMENT
+   PRIMARY KEY) ENGINE=InnoDB;
+INSERT INTO t1 VALUES (NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL),(NULL);
+CREATE TABLE t2(
+    c1 TINYINT(3) UNSIGNED NOT NULL AUTO_INCREMENT
+    PRIMARY KEY) ENGINE=InnoDB;
+-- error ER_DUP_ENTRY,1062
+INSERT INTO t2 SELECT c1 FROM t1;
+-- error ER_DUP_ENTRY,1467
+INSERT INTO t2 SELECT NULL FROM t1;
+DROP TABLE t1;
+DROP TABLE t2;