What is the meaning of I'm not trolling? - Question about English (US)

This is a troll question'What does 'troll question' mean? I saw this in many answers. I am an English learner and I don't understand it.Does it mean a tough question or a

Kramnik's petition has gained 1000 signatures in 12 hours, but apparently most are fake / trolling him : r/chess

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Online trolling used to be funny, but now the term refers to something far more sinister

Why You Shouldn't Always Ignore Trolls

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Isn't trolling just questions you don't like or can't answer? - Quora

Something is wrong on the internet, by James Bridle

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How to Deal With Trolls - The Atlantic

The Now: What is Trolling?