On Tue, Jan 16, 2018 at 12:03:43AM +0800, Ming Lei wrote: > Hi, > > These two patches fixes IO hang issue reported by Laurence. > > 84676c1f21 ("genirq/affinity: assign vectors to all possible CPUs") > may cause one irq vector assigned to all offline CPUs, then this vector > can't handle irq any more. Well, that very much was the intention of managed interrupts. Why does the device raise an interrupt for a queue that has no online cpu assigned to it?