Yes happend to me too, but I haven’t also any logs so far (original R-Pi power source, if someone asked) I had the idea that the DIM screensaver (my Pi freezed over night) is the root of evil but deactivation didn’t bring the (full) solution (as far as I can tell atm.), so I was thinking it hangs on my external USB-HD 3TB when I plugged it in, but it doesn’t happend all the time so on this point I was thinking my Installation is somewhere dirty but it seems not.
Make sure that you have debugging enabled because only then the logs will be really helpful.
Also verify if you still can access via ssh when Kodi crashed