A ride at the Royal Melbourne Show has been shut down amid safety concerns.

The Skywalker, described online as being "for the real thrill-seekers", was closed about 9pm on Sunday after some passengers reported malfunctioning harnesses.

The Skywalker.

Allie Calleja told Fairfax Media she was about two storeys off the ground and the ride had just started to spin and tilt when her harness lifted.

"As soon as it happened my boyfriend pulled it back in and the ride stopped in mid-air," she said.