Freezing of tasks failed ... *0* tasks refusing to freeze, wq_busy=1)

I have a NAS system that does supend itslef when rx/tx counts drops below a level meaning no activity... The last working kernel was 3.14.58, any thing longterm after that refuse to freeze after a while with: [ 9692.905439] ehci-pci :00:1d.0: remove, state 1 [ 9692.905448] usb usb4: USB

Freezing of tasks failed ... *0* tasks refusing to freeze, wq_busy=1)

I have a NAS system that does supend itslef when rx/tx counts drops below a level meaning no activity... The last working kernel was 3.14.58, any thing longterm after that refuse to freeze after a while with: [ 9692.905439] ehci-pci :00:1d.0: remove, state 1 [ 9692.905448] usb usb4: USB