On Mon, Feb 18, 2019 at 04:42:27PM -0800, 陈华才 wrote: > I've tested, this patch can fix the nvme problem, but it can't be applied > to 4.19 because of different context. And, I still think my original solution > (genirq/affinity: Assign default affinity to pre/post vectors) is correct. > There may be similar problems except nvme. I'll send a proper patch to fix the warning. It's always a driver bug if they try to extract affinity from a non-managed irq, but I don't think this particular nvme instance is very urgent as the end result is the same, just without the warning.