On Fri, May 27, 2022 at 09:39:46AM +0100, Mel Gorman wrote: > Do you think it's related to the series and if so why? From the warning, > it's not obvious to me why it would be given that it's a warning about a > task not being inactive when it is expected to be. I don't know. I just saw the 6/6 patch touched the mm_percpu_wq. Anyway, I'll spend more time to reproduce, and see if we are lucky.