I drove my toyota corolla around the block and?

i have had my corolla in my garage for about 6 months now cause i got a newer car, it hasn't been started since then, so i decided to drive it around the block today for the hell of it, and it was blowing white smoke out the exhuast, it doesn't over heat or anything, it runs perfect, is the smoke from just sitting a long long time without it being driven?
 
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