revision-id: 7e7592ade5bec98e80fb9a4aa6f6ad75107b605f parent(s): 6c0f3dd3414a97266912651fb169f630a36f2659 committer: Sergei Petrunia branch nick: 10.2-r11 timestamp: 2018-05-14 15:59:51 +0300 message: MDEV-16154: Server crashes in in myrocks::ha_rocksdb::load_auto_incr_value_from_index Backport the fix from the upstream and add our testcase. Backported cset: commit 997a979bf5e2f75ab88781d9d3fd22dddc1fc21f Author: Manuel Ung <mung@fb.com> Date: Thu Feb 15 08:38:12 2018 -0800 Fix crashes in autoincrement code paths Summary: There are two issues related to autoincrement that can lead to crashes: 1. The max value for double/float type for autoincrement was not implemented in MyRocks, and can lead to assertions. The fix is to add them in. 2. If we try to set auto_increment via alter table on a table without an auto_increment column defined, we segfault because there is no index from which to read the last value. The fix is to perform a check to see if autoincrement exists before reading from index (similar to code ha_rocksdb::open). Fixes https://github.com/facebook/mysql-5.6/issues/792 Closes https://github.com/facebook/mysql-5.6/pull/794 Differential Revision: D6995096 Pulled By: lth fbshipit-source-id: 1130ce1 --- storage/rocksdb/ha_rocksdb.cc | 10 +++++++++- storage/rocksdb/mysql-test/rocksdb/r/autoinc_vars.result | 10 ++++++++++ .../rocksdb/mysql-test/rocksdb/r/mariadb_port_fixes.result | 7 +++++++ storage/rocksdb/mysql-test/rocksdb/t/autoinc_vars.test | 13 +++++++++++++ .../rocksdb/mysql-test/rocksdb/t/mariadb_port_fixes.test | 9 +++++++++ 5 files changed, 48 insertions(+), 1 deletion(-) diff --git a/storage/rocksdb/ha_rocksdb.cc b/storage/rocksdb/ha_rocksdb.cc index 46d9638..8d7809a 100644 --- a/storage/rocksdb/ha_rocksdb.cc +++ b/storage/rocksdb/ha_rocksdb.cc @@ -5088,6 +5088,12 @@ static ulonglong rdb_get_int_col_max_value(const Field *field) { case HA_KEYTYPE_LONGLONG: max_value = 0x7FFFFFFFFFFFFFFFULL; break; + case HA_KEYTYPE_FLOAT: + max_value = 0x1000000ULL; + break; + case HA_KEYTYPE_DOUBLE: + max_value = 0x20000000000000ULL; + break; default: abort(); } @@ -11734,7 +11740,9 @@ bool ha_rocksdb::prepare_inplace_alter_table( if (!new_tdef) { new_tdef = m_tbl_def; } - max_auto_incr = load_auto_incr_value_from_index(); + if (table->found_next_number_field) { + max_auto_incr = load_auto_incr_value_from_index(); + } } ha_alter_info->handler_ctx = new Rdb_inplace_alter_ctx( diff --git a/storage/rocksdb/mysql-test/rocksdb/r/autoinc_vars.result b/storage/rocksdb/mysql-test/rocksdb/r/autoinc_vars.result index 5da9a7e..8cc9b07 100644 --- a/storage/rocksdb/mysql-test/rocksdb/r/autoinc_vars.result +++ b/storage/rocksdb/mysql-test/rocksdb/r/autoinc_vars.result @@ -140,3 +140,13 @@ SELECT * FROM t1; a b 18446744073709551613 a DROP TABLE t1; +#---------------------------------- +# Issue #792 Crash in autoincrement +#---------------------------------- +CREATE TABLE t1(C1 DOUBLE AUTO_INCREMENT KEY,C2 CHAR) ENGINE=ROCKSDB; +INSERT INTO t1 VALUES(2177,0); +DROP TABLE t1; +CREATE TABLE t0(c0 BLOB) ENGINE=ROCKSDB; +INSERT INTO t0 VALUES(0); +ALTER TABLE t0 AUTO_INCREMENT=0; +DROP TABLE t0; diff --git a/storage/rocksdb/mysql-test/rocksdb/r/mariadb_port_fixes.result b/storage/rocksdb/mysql-test/rocksdb/r/mariadb_port_fixes.result index 98c5ebe..eeb261d 100644 --- a/storage/rocksdb/mysql-test/rocksdb/r/mariadb_port_fixes.result +++ b/storage/rocksdb/mysql-test/rocksdb/r/mariadb_port_fixes.result @@ -89,3 +89,10 @@ CREATE TABLE t1 (i INT) ENGINE=RocksDB; FLUSH TABLE t1 FOR EXPORT; ERROR HY000: Storage engine ROCKSDB of the table `test`.`t1` doesn't have this option DROP TABLE t1; +# +# MDEV-16154 Server crashes in in myrocks::ha_rocksdb::load_auto_incr_value_from_inde +# +CREATE TABLE t1 (a INT) ENGINE=RocksDB; +INSERT INTO t1 VALUES (1); +ALTER TABLE t1 AUTO_INCREMENT 10; +DROP TABLE t1; diff --git a/storage/rocksdb/mysql-test/rocksdb/t/autoinc_vars.test b/storage/rocksdb/mysql-test/rocksdb/t/autoinc_vars.test index b896859..9d7f036 100644 --- a/storage/rocksdb/mysql-test/rocksdb/t/autoinc_vars.test +++ b/storage/rocksdb/mysql-test/rocksdb/t/autoinc_vars.test @@ -103,3 +103,16 @@ SHOW CREATE TABLE t1; INSERT INTO t1 VALUES (NULL, 'c'); SELECT * FROM t1; DROP TABLE t1; + +--echo #---------------------------------- +--echo # Issue #792 Crash in autoincrement +--echo #---------------------------------- + +CREATE TABLE t1(C1 DOUBLE AUTO_INCREMENT KEY,C2 CHAR) ENGINE=ROCKSDB; +INSERT INTO t1 VALUES(2177,0); +DROP TABLE t1; + +CREATE TABLE t0(c0 BLOB) ENGINE=ROCKSDB; +INSERT INTO t0 VALUES(0); +ALTER TABLE t0 AUTO_INCREMENT=0; +DROP TABLE t0; diff --git a/storage/rocksdb/mysql-test/rocksdb/t/mariadb_port_fixes.test b/storage/rocksdb/mysql-test/rocksdb/t/mariadb_port_fixes.test index 681e3d2..a48c8a5 100644 --- a/storage/rocksdb/mysql-test/rocksdb/t/mariadb_port_fixes.test +++ b/storage/rocksdb/mysql-test/rocksdb/t/mariadb_port_fixes.test @@ -83,3 +83,12 @@ CREATE TABLE t1 (i INT) ENGINE=RocksDB; FLUSH TABLE t1 FOR EXPORT; DROP TABLE t1; +--echo # +--echo # MDEV-16154 Server crashes in in myrocks::ha_rocksdb::load_auto_incr_value_from_inde +--echo # +CREATE TABLE t1 (a INT) ENGINE=RocksDB; +INSERT INTO t1 VALUES (1); +ALTER TABLE t1 AUTO_INCREMENT 10; + +DROP TABLE t1; +