Over filling the crankcase can definately make it smoke. It will let the crank whip the oil up onto the cylinder walls more than normal. Oil thins when it gets hot, letting it get past the rinds easier.
Change the oil. Put in the proper amount of oil and run for a few minutes. Check the oil level and make a new mark on the dip stick if it's not where it's supposed to be.
Change the oil. Put in the proper amount of oil and run for a few minutes. Check the oil level and make a new mark on the dip stick if it's not where it's supposed to be.