> > I guess this way still can't fix the request allocation crash issue > > triggered by using blk_mq_alloc_request_hctx(), in which one hw queue > may > > not be mapped from any online CPU. > > Not really. I guess we will need to simply skip queues that are > mapped to an offline cpu. > > > Maybe this patch isn't for this issue, but it is closely related. > > Yes, another patch is still needed. > > Steve, do you still have that patch? I don't seem to > find it anywhere. I have no such patch. I don't remember this issue. Steve.