nvme: setup streams after initializing namespace head

Fixes a NULL pointer dereference.

Reported-by: Arnav Dawn <a.dawn@samsung.com>
Signed-off-by: Keith Busch <keith.busch@intel.com>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>

diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index eab812d..1e46e60 100644 (file)
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -2870,7 +2870,6 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
 
        blk_queue_logical_block_size(ns->queue, 1 << ns->lba_shift);
        nvme_set_queue_limits(ctrl, ns->queue);
-       nvme_setup_streams_ns(ctrl, ns);
 
        id = nvme_identify_ns(ctrl, nsid);
        if (!id)
@@ -2881,6 +2880,7 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
 
        if (nvme_init_ns_head(ns, nsid, id, &new))
                goto out_free_id;
+       nvme_setup_streams_ns(ctrl, ns);
        
 #ifdef CONFIG_NVME_MULTIPATH
        /*