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Code Issues Releases Wiki Activity

nvme-fc: fix initialization order

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ctrl->ops is used by nvme_alloc_admin_tag_set() but set by
nvme_init_ctrl() so reorder the calls to avoid a NULL pointer
dereference.

Fixes: 6dfba1c09c ("nvme-fc: use the tagset alloc/free helpers")
Signed-off-by: Ross Lagerwall <ross.lagerwall@citrix.com>
Reviewed-by: Sagi Grimberg <sagi@grimberg.me>
Signed-off-by: Christoph Hellwig <hch@lst.de>
This commit is contained in:
Ross Lagerwall 2023-01-20 17:43:54 +00:00 committed by Christoph Hellwig
parent 955bc12299
commit 98e3528012
1 changed files with 8 additions and 10 deletions
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18
drivers/nvme/host/fc.c
View file

@ -3521,13 +3521,6 @@ nvme_fc_init_ctrl(struct device *dev, struct nvmf_ctrl_options *opts,
nvme_fc_init_queue(ctrl, 0);
ret = nvme_alloc_admin_tag_set(&ctrl->ctrl, &ctrl->admin_tag_set,
&nvme_fc_admin_mq_ops,
struct_size((struct nvme_fcp_op_w_sgl *)NULL, priv,
ctrl->lport->ops->fcprqst_priv_sz));
if (ret)
goto out_free_queues;
/*
* Would have been nice to init io queues tag set as well.
* However, we require interaction from the controller
@ -3537,10 +3530,17 @@ nvme_fc_init_ctrl(struct device *dev, struct nvmf_ctrl_options *opts,
ret = nvme_init_ctrl(&ctrl->ctrl, dev, &nvme_fc_ctrl_ops, 0);
if (ret)
goto out_cleanup_tagset;
goto out_free_queues;
/* at this point, teardown path changes to ref counting on nvme ctrl */
ret = nvme_alloc_admin_tag_set(&ctrl->ctrl, &ctrl->admin_tag_set,
&nvme_fc_admin_mq_ops,
struct_size((struct nvme_fcp_op_w_sgl *)NULL, priv,
ctrl->lport->ops->fcprqst_priv_sz));
if (ret)
goto fail_ctrl;
spin_lock_irqsave(&rport->lock, flags);
list_add_tail(&ctrl->ctrl_list, &rport->ctrl_list);
spin_unlock_irqrestore(&rport->lock, flags);
@ -3592,8 +3592,6 @@ nvme_fc_init_ctrl(struct device *dev, struct nvmf_ctrl_options *opts,
return ERR_PTR(-EIO);
out_cleanup_tagset:
nvme_remove_admin_tag_set(&ctrl->ctrl);
out_free_queues:
kfree(ctrl->queues);
out_free_ida: