[PATCH] nvme-tcp: Check if request has started before processing it

[Sagi Grimberg]

> blk_mq_tag_to_rq() will always return a request if the command_id is
> in the valid range. Check if the request has been started. If we
> blindly process the request we might double complete a request which
> can be fatal.

How did you get to this one? did the controller send a completion for
a completed/bogus request?