Root Help, My phone F*D Up?? Root changed Kernel? topic

I was using Kingo Root to root my S3 i9300, until i realized it wasn't working because it kept looping and when i took my phone out it still kept looping with the rooting process(As if my device is still connected). It rebooted my phone once and the problem is it still keeps looping.
But the problem is, it change my Kernel Version to
3.0.31-2788594
root@p-andr-rbs03 #1
Is that stock S3 kernel?