MariaDB and InnoDB in RHEL 7 beta

The 5.5.33a-MariaDB build shipping in RHEL7 Beta 1 appears to support InnoDB

MariaDB [(none)]> SELECT SUPPORT FROM INFORMATION_SCHEMA.ENGINES WHERE ENGINE = 'InnoDB';
+---------+
| SUPPORT |
+---------+
| DEFAULT |
+---------+
1 row in set (0.00 sec)

... but if I add any InnoDB settings to my.cnf (ex: innodb_buffer_pool_size)...

I get errors like:

140103 13:26:43 [ERROR] Plugin 'InnoDB' init function returned error.
140103 13:26:43 [ERROR] Plugin 'InnoDB' registration as a STORAGE ENGINE failed.
140103 13:26:43 [ERROR] Unknown/unsupported storage engine: InnoDB