kernel null pointer at nvme_tcp_init_iter+0x7d/0xd0 [nvme_tcp]

[Chaitanya Kulkarni]

On 2/9/21 18:52, Yi Zhang wrote:
> So it's nvme_admin_abort_cmd here
>
> [   74.017450] run blktests nvme/012 at 2021-02-09 21:41:55
> [   74.111311] loop: module loaded
> [   74.125717] loop0: detected capacity change from 2097152 to 0
> [   74.141026] nvmet: adding nsid 1 to subsystem blktests-subsystem-1
> [   74.149395] nvmet_tcp: enabling port 0 (127.0.0.1:4420)
> [   74.158298] nvmet: creating controller 1 for subsystem 
> blktests-subsystem-1 for NQN 
> nqn.2014-08.org.nvmexpress:uuid:41131d88-02ca-4ccc-87b3-6ca3f28b13a4.
> [   74.158742] nvme nvme0: creating 48 I/O queues.
> [   74.163391] nvme nvme0: mapped 48/0/0 default/read/poll queues.
> [   74.184623] nvme nvme0: new ctrl: NQN "blktests-subsystem-1", addr 
> 127.0.0.1:4420
> [   75.235059] nvme_tcp: rq 38 opcode 8
> [   75.238653] blk_update_request: I/O error, dev nvme0c0n1, sector 
> 1048624 op 0x9:(WRITE_ZEROES) flags 0x2800800 phys_seg 0 prio class 0
> [   75.380179] XFS (nvme0n1): Mounting V5 Filesystem
> [   75.387457] XFS (nvme0n1): Ending clean mount
> [   75.388555] xfs filesystem being mounted at /mnt/blktests supports 
> timestamps until 2038 (0x7fffffff)
> [   91.035659] XFS (nvme0n1): Unmounting Filesystem
> [   91.043334] nvme nvme0: Removing ctrl: NQN "blktests-subsystem-1"

But write-zeores is also data less command and should not fail.