Kernel execution time limit

Hello to you all! My name is Rafail and I am new here.
So I do my graduation project in which I write cuda to a SHIELD Tablet and I have the following issue:
I have a kernel that runs indefinitely(and this is what I want) but after some time it stops for no reason. I checked the device properties and it says it doesn’t have time execution limit, but I think that this is the case. Does anyone know something or had similar problem?