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-rw-r--r--drivers/block/ublk_drv.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/block/ublk_drv.c b/drivers/block/ublk_drv.c
index 7ece4c2ef062..ae98e81b21ce 100644
--- a/drivers/block/ublk_drv.c
+++ b/drivers/block/ublk_drv.c
@@ -1190,6 +1190,11 @@ static int ublk_ctrl_start_dev(struct io_uring_cmd *cmd)
get_device(&ub->cdev_dev);
ret = add_disk(disk);
if (ret) {
+ /*
+ * Has to drop the reference since ->free_disk won't be
+ * called in case of add_disk failure.
+ */
+ ublk_put_device(ub);
put_disk(disk);
goto out_unlock;
}