[PATCH 1/2 V2] nvme-rdma: Fix race between queue timeout and error recovery

Israel Rukshin israelr at mellanox.com
Sun Apr 8 07:08:38 PDT 2018


When returning BLK_EH_HANDLED from nvme_rdma_timeout() the block layer
complete the request.
Error recovery may also complete the request when aborting the requests.

Signed-off-by: Israel Rukshin <israelr at mellanox.com>
Reviewed-by: Max Gurtovoy <maxg at mellanox.com>
---
 drivers/nvme/host/rdma.c | 5 +----
 1 file changed, 1 insertion(+), 4 deletions(-)

diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index 758537e..c1abfc8 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -1595,10 +1595,7 @@ static int nvme_rdma_cm_handler(struct rdma_cm_id *cm_id,
 	/* queue error recovery */
 	nvme_rdma_error_recovery(req->queue->ctrl);
 
-	/* fail with DNR on cmd timeout */
-	nvme_req(rq)->status = NVME_SC_ABORT_REQ | NVME_SC_DNR;
-
-	return BLK_EH_HANDLED;
+	return BLK_EH_RESET_TIMER;
 }
 
 /*
-- 
1.8.3.1




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