[PATCH 0/3] avoid race between time out and tear down

[Sagi Grimberg]

> Avoid race between time out and tear down for rdma and tcp.

This patchset overall looks good, but we still need the patch that
avoids double completion:

--
diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c
index 629b025685d1..46428ff0b0fc 100644
--- a/drivers/nvme/host/tcp.c
+++ b/drivers/nvme/host/tcp.c
@@ -2175,7 +2175,7 @@ static void nvme_tcp_complete_timed_out(struct 
request *rq)
         /* fence other contexts that may complete the command */
         mutex_lock(&to_tcp_ctrl(ctrl)->teardown_lock);
         nvme_tcp_stop_queue(ctrl, nvme_tcp_queue_id(req->queue));
-       if (!blk_mq_request_completed(rq)) {
+       if (blk_mq_request_started(rq) && !blk_mq_request_completed(rq)) {
                 nvme_req(rq)->status = NVME_SC_HOST_ABORTED_CMD;
                 blk_mq_complete_request_sync(rq);
         }
--