you should be fine as long as your new domain is following googles ToS. Meaning you aren't doing any SEO blackhat techniques. Think about it... I can redirect a site I own to a site that you own. Your site will not get a penalty. Otherwise, people would abuse this notion if otherwise.
You might be right, but what if we are talking about penalized non-www domain indexed in Google? Lets say something.com was penalized. And www something.com is newly indexed. I want to redirect the non-www to the www. What will happen then?
What will Google do if i report spammy site where a link to my site appears? Is it going to ban my site also? Or it's just going to deindex the spammy site only?