I am leaving on day 30 on social/ visitor pass in Malaysia, and get 124105 code

Hi all,

I am visiting / spending my time in Malaysia for 30 days and leaving on day 30th on social/ visitor pass in Malaysia, and when exiting at immigration counter,I get 124105 code. I arrived 13 December and got out of Malaysia on 11 January 2015.

He stamps my passport with "standard" exit pass, in addition to his, he writes 124105 code.

What does it mean ?

Am I overstaying 1 day ?

Thanks for your answer