[PATCH AUTOSEL 4.19 13/19] nvme-rdma: cancel async events before freeing event struct

[Sasha Levin]

From: David Milburn <dmilb...@redhat.com>

[ Upstream commit 925dd04c1f9825194b9e444c12478084813b2b5d ]

Cancel async event work in case async event has been queued up, and
nvme_rdma_submit_async_event() runs after event has been freed.

Signed-off-by: David Milburn <dmilb...@redhat.com>
Reviewed-by: Keith Busch <kbu...@kernel.org>
Reviewed-by: Sagi Grimberg <s...@grimberg.me>
Signed-off-by: Christoph Hellwig <h...@lst.de>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 drivers/nvme/host/rdma.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index f393a6193252e..8a11e26d17683 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -739,6 +739,7 @@ static void nvme_rdma_destroy_admin_queue(struct 
nvme_rdma_ctrl *ctrl,
                nvme_rdma_free_tagset(&ctrl->ctrl, ctrl->ctrl.admin_tagset);
        }
        if (ctrl->async_event_sqe.data) {
+               cancel_work_sync(&ctrl->ctrl.async_event_work);
                nvme_rdma_free_qe(ctrl->device->dev, &ctrl->async_event_sqe,
                                sizeof(struct nvme_command), DMA_TO_DEVICE);
                ctrl->async_event_sqe.data = NULL;
-- 
2.25.1