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nvme: put ns_head ref if namespace fails allocation 

In case nvme_alloc_ns fails after we initialize ns_head but before we
add the ns to the controller namespaces list we need to explicitly put
the ns_head reference because when we teardown the controller we
won't find it, causing us to leak a dangling subsystem eventually.

Signed-off-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
hifive-unleashed-5.1
Sagi Grimberg 2019-03-13 18:54:57 +01:00 committed by Jens Axboe
parent 81fe928499
commit a63b83700b
1 changed files with 1 additions and 0 deletions
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drivers/nvme/host/core.c
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@ -3304,6 +3304,7 @@ static int nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
mutex_lock(&ctrl->subsys->lock);
list_del_rcu(&ns->siblings);
mutex_unlock(&ctrl->subsys->lock);
nvme_put_ns_head(ns->head);
out_free_id:
kfree(id);
out_free_queue: