I'd guess/hope for a CCV failure based on the info provided so far ( although not to the point of hydro lock). Oil smoke (blue/grey) can look white under certain lighting conditions.
Originally Posted by iskoos
I have heard of CVV failures (especially in cold weather) causing engine hydro-lock; and it can happen fast. Smoke coming out of the tailpipe shouldn't be white though.
If you're attempting to diagnose yourself, the first order of business is to pull the spark plugs and see if you can get the engine to turn over by hand.