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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>
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@ -3304,6 +3304,7 @@ static int nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid)
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mutex_lock(&ctrl->subsys->lock);
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list_del_rcu(&ns->siblings);
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mutex_unlock(&ctrl->subsys->lock);
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nvme_put_ns_head(ns->head);
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out_free_id:
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kfree(id);
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out_free_queue:
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