kernull NULL pointer observed on initiator side after 'nvmetcli clear' on target side

[Sagi Grimberg]

>> Yep... looks like we don't take into account that we can't use all the
>> queues now...
>>
>> Does this patch help:
> Still can reproduce the reconnect in 10 seconds issues with the patch,
> here is the log:
>
> [  193.574183] nvme nvme0: new ctrl: NQN "nvme-subsystem-name", addr
> 172.31.2.3:1023
> [  193.612039] __nvme_rdma_init_request: changing called
> [  193.638723] __nvme_rdma_init_request: changing called
> [  193.661767] __nvme_rdma_init_request: changing called
> [  193.684579] __nvme_rdma_init_request: changing called
> [  193.707327] __nvme_rdma_init_request: changing called
> [  193.730071] __nvme_rdma_init_request: changing called
> [  193.752896] __nvme_rdma_init_request: changing called
> [  193.775699] __nvme_rdma_init_request: changing called
> [  193.798813] __nvme_rdma_init_request: changing called
> [  193.821257] __nvme_rdma_init_request: changing called
> [  193.844090] __nvme_rdma_init_request: changing called
> [  193.866472] __nvme_rdma_init_request: changing called
> [  193.889375] __nvme_rdma_init_request: changing called
> [  193.912094] __nvme_rdma_init_request: changing called
> [  193.934942] __nvme_rdma_init_request: changing called
> [  193.957688] __nvme_rdma_init_request: changing called
> [  606.273376] Broke affinity for irq 16
> [  606.291940] Broke affinity for irq 28
> [  606.310201] Broke affinity for irq 90
> [  606.328211] Broke affinity for irq 93
> [  606.346263] Broke affinity for irq 97
> [  606.364314] Broke affinity for irq 100
> [  606.382105] Broke affinity for irq 104
> [  606.400727] smpboot: CPU 1 is now offline
> [  616.820505] nvme nvme0: reconnecting in 10 seconds
> [  626.882747] blk_mq_reinit_tagset: tag is null, continue
> [  626.914000] nvme nvme0: Connect rejected: status 8 (invalid service ID).
> [  626.947965] nvme nvme0: rdma_resolve_addr wait failed (-104).
> [  626.974673] nvme nvme0: Failed reconnect attempt, requeueing...

This is strange...

Is the target alive? I'm assuming it didn't crash here correct?