While I find it hard to correctly describe genres to QOTSA’s music - as in my ears, they generally defy what others are doing; hence it being “genre-less”.

I like how Liz Scarlett of loudersound.com says it

Carnavoyeur follows on from the recently-released Emotion Sickness, and features a quirky rhythm, embellished by jaunty organs and warping bass, as frontman Josh Homme intones quietly sinister lines such as ‘When there’s nothing I can do, I smile…’

Maybe some kind of alternative rock with some slightly phycadelic vibes