Comment 17 for bug 758788

The case seems the race condition between using index entry at dictionary and removing index entry.
And it might be caused by the situation that
the loading the index entry and the deleting index entry are done at the same time.
That is, the LRU list of the table entry of dictionary is very short.
If the LRU list has certain length enough, the crash should not cause, though it is optimistic implementation.
(Otherwise, we need to rewrite all InnoDB source code using index entry of dict to use new mutex.)

The test script set the innodb_dict_size_limit value to 200k. (200KB)
It might be crazily tiny value.

So, I suggest to change the minimum value of the innodb_dict_size_limit to 100M from 0.
100M should be enough to keep the safe certain length of the dictionary LRU list.