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Commit a457d08e authored by Jens Axboe's avatar Jens Axboe
Browse files

Merge branch 'nvme-4.11-rc' of git://git.infradead.org/nvme into for-linus 

Sagi writes:

This consists of some fixes for issues reported lately:
- loop and rdma host driver cpu hotplug fixes
- fix loop use-after-free
- nvmet percpu_ref confirmation fix to fail ongoing requests
- nvmet-rdma fix a non-initialized commands deref
parents efd4b81a 945dd5ba

drivers/nvme/host/rdma.c

+14 −14
Original line number Diff line number Diff line
@@ -343,8 +343,6 @@ static int __nvme_rdma_init_request(struct nvme_rdma_ctrl *ctrl, 
	struct ib_device *ibdev = dev->dev;

	int ret;



	BUG_ON(queue_idx >= ctrl->queue_count);



	ret = nvme_rdma_alloc_qe(ibdev, &req->sqe, sizeof(struct nvme_command),

			DMA_TO_DEVICE);

	if (ret)
@@ -652,8 +650,22 @@ static int nvme_rdma_connect_io_queues(struct nvme_rdma_ctrl *ctrl) 


static int nvme_rdma_init_io_queues(struct nvme_rdma_ctrl *ctrl)

{

	struct nvmf_ctrl_options *opts = ctrl->ctrl.opts;

	unsigned int nr_io_queues;

	int i, ret;



	nr_io_queues = min(opts->nr_io_queues, num_online_cpus());

	ret = nvme_set_queue_count(&ctrl->ctrl, &nr_io_queues);

	if (ret)

		return ret;



	ctrl->queue_count = nr_io_queues + 1;

	if (ctrl->queue_count < 2)

		return 0;



	dev_info(ctrl->ctrl.device,

		"creating %d I/O queues.\n", nr_io_queues);



	for (i = 1; i < ctrl->queue_count; i++) {

		ret = nvme_rdma_init_queue(ctrl, i,

					   ctrl->ctrl.opts->queue_size);
@@ -1791,20 +1803,8 @@ static const struct nvme_ctrl_ops nvme_rdma_ctrl_ops = { 


static int nvme_rdma_create_io_queues(struct nvme_rdma_ctrl *ctrl)

{

	struct nvmf_ctrl_options *opts = ctrl->ctrl.opts;

	int ret;



	ret = nvme_set_queue_count(&ctrl->ctrl, &opts->nr_io_queues);

	if (ret)

		return ret;



	ctrl->queue_count = opts->nr_io_queues + 1;

	if (ctrl->queue_count < 2)

		return 0;



	dev_info(ctrl->ctrl.device,

		"creating %d I/O queues.\n", opts->nr_io_queues);



	ret = nvme_rdma_init_io_queues(ctrl);

	if (ret)

		return ret;

drivers/nvme/target/core.c

+10 −1
Original line number Diff line number Diff line
@@ -425,6 +425,13 @@ void nvmet_sq_setup(struct nvmet_ctrl *ctrl, struct nvmet_sq *sq, 
	ctrl->sqs[qid] = sq;

}



static void nvmet_confirm_sq(struct percpu_ref *ref)

{

	struct nvmet_sq *sq = container_of(ref, struct nvmet_sq, ref);



	complete(&sq->confirm_done);

}



void nvmet_sq_destroy(struct nvmet_sq *sq)

{

	/*
@@ -433,7 +440,8 @@ void nvmet_sq_destroy(struct nvmet_sq *sq) 
	 */

	if (sq->ctrl && sq->ctrl->sqs && sq->ctrl->sqs[0] == sq)

		nvmet_async_events_free(sq->ctrl);

	percpu_ref_kill(&sq->ref);

	percpu_ref_kill_and_confirm(&sq->ref, nvmet_confirm_sq);

	wait_for_completion(&sq->confirm_done);

	wait_for_completion(&sq->free_done);

	percpu_ref_exit(&sq->ref);
@@ -461,6 +469,7 @@ int nvmet_sq_init(struct nvmet_sq *sq) 
		return ret;

	}

	init_completion(&sq->free_done);

	init_completion(&sq->confirm_done);



	return 0;

}

drivers/nvme/target/loop.c

+51 −39
Original line number Diff line number Diff line
@@ -223,8 +223,6 @@ static void nvme_loop_submit_async_event(struct nvme_ctrl *arg, int aer_idx) 
static int nvme_loop_init_iod(struct nvme_loop_ctrl *ctrl,

		struct nvme_loop_iod *iod, unsigned int queue_idx)

{

	BUG_ON(queue_idx >= ctrl->queue_count);



	iod->req.cmd = &iod->cmd;

	iod->req.rsp = &iod->rsp;

	iod->queue = &ctrl->queues[queue_idx];
@@ -288,9 +286,9 @@ static struct blk_mq_ops nvme_loop_admin_mq_ops = { 


static void nvme_loop_destroy_admin_queue(struct nvme_loop_ctrl *ctrl)

{

	nvmet_sq_destroy(&ctrl->queues[0].nvme_sq);

	blk_cleanup_queue(ctrl->ctrl.admin_q);

	blk_mq_free_tag_set(&ctrl->admin_tag_set);

	nvmet_sq_destroy(&ctrl->queues[0].nvme_sq);

}



static void nvme_loop_free_ctrl(struct nvme_ctrl *nctrl)
@@ -314,6 +312,43 @@ static void nvme_loop_free_ctrl(struct nvme_ctrl *nctrl) 
	kfree(ctrl);

}



static void nvme_loop_destroy_io_queues(struct nvme_loop_ctrl *ctrl)

{

	int i;



	for (i = 1; i < ctrl->queue_count; i++)

		nvmet_sq_destroy(&ctrl->queues[i].nvme_sq);

}



static int nvme_loop_init_io_queues(struct nvme_loop_ctrl *ctrl)

{

	struct nvmf_ctrl_options *opts = ctrl->ctrl.opts;

	unsigned int nr_io_queues;

	int ret, i;



	nr_io_queues = min(opts->nr_io_queues, num_online_cpus());

	ret = nvme_set_queue_count(&ctrl->ctrl, &nr_io_queues);

	if (ret || !nr_io_queues)

		return ret;



	dev_info(ctrl->ctrl.device, "creating %d I/O queues.\n", nr_io_queues);



	for (i = 1; i <= nr_io_queues; i++) {

		ctrl->queues[i].ctrl = ctrl;

		ret = nvmet_sq_init(&ctrl->queues[i].nvme_sq);

		if (ret)

			goto out_destroy_queues;



		ctrl->queue_count++;

	}



	return 0;



out_destroy_queues:

	nvme_loop_destroy_io_queues(ctrl);

	return ret;

}



static int nvme_loop_configure_admin_queue(struct nvme_loop_ctrl *ctrl)

{

	int error;
@@ -385,17 +420,13 @@ static int nvme_loop_configure_admin_queue(struct nvme_loop_ctrl *ctrl) 


static void nvme_loop_shutdown_ctrl(struct nvme_loop_ctrl *ctrl)

{

	int i;



	nvme_stop_keep_alive(&ctrl->ctrl);



	if (ctrl->queue_count > 1) {

		nvme_stop_queues(&ctrl->ctrl);

		blk_mq_tagset_busy_iter(&ctrl->tag_set,

					nvme_cancel_request, &ctrl->ctrl);



		for (i = 1; i < ctrl->queue_count; i++)

			nvmet_sq_destroy(&ctrl->queues[i].nvme_sq);

		nvme_loop_destroy_io_queues(ctrl);

	}



	if (ctrl->ctrl.state == NVME_CTRL_LIVE)
@@ -467,19 +498,14 @@ static void nvme_loop_reset_ctrl_work(struct work_struct *work) 
	if (ret)

		goto out_disable;



	for (i = 1; i <= ctrl->ctrl.opts->nr_io_queues; i++) {

		ctrl->queues[i].ctrl = ctrl;

		ret = nvmet_sq_init(&ctrl->queues[i].nvme_sq);

	ret = nvme_loop_init_io_queues(ctrl);

	if (ret)

			goto out_free_queues;



		ctrl->queue_count++;

	}

		goto out_destroy_admin;



	for (i = 1; i <= ctrl->ctrl.opts->nr_io_queues; i++) {

	for (i = 1; i < ctrl->queue_count; i++) {

		ret = nvmf_connect_io_queue(&ctrl->ctrl, i);

		if (ret)

			goto out_free_queues;

			goto out_destroy_io;

	}



	changed = nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_LIVE);
@@ -492,9 +518,9 @@ static void nvme_loop_reset_ctrl_work(struct work_struct *work) 


	return;



out_free_queues:

	for (i = 1; i < ctrl->queue_count; i++)

		nvmet_sq_destroy(&ctrl->queues[i].nvme_sq);

out_destroy_io:

	nvme_loop_destroy_io_queues(ctrl);

out_destroy_admin:

	nvme_loop_destroy_admin_queue(ctrl);

out_disable:

	dev_warn(ctrl->ctrl.device, "Removing after reset failure\n");
@@ -533,24 +559,11 @@ static const struct nvme_ctrl_ops nvme_loop_ctrl_ops = { 


static int nvme_loop_create_io_queues(struct nvme_loop_ctrl *ctrl)

{

	struct nvmf_ctrl_options *opts = ctrl->ctrl.opts;

	int ret, i;



	ret = nvme_set_queue_count(&ctrl->ctrl, &opts->nr_io_queues);

	if (ret || !opts->nr_io_queues)

		return ret;



	dev_info(ctrl->ctrl.device, "creating %d I/O queues.\n",

		opts->nr_io_queues);



	for (i = 1; i <= opts->nr_io_queues; i++) {

		ctrl->queues[i].ctrl = ctrl;

		ret = nvmet_sq_init(&ctrl->queues[i].nvme_sq);

	ret = nvme_loop_init_io_queues(ctrl);

	if (ret)

			goto out_destroy_queues;



		ctrl->queue_count++;

	}

		return ret;



	memset(&ctrl->tag_set, 0, sizeof(ctrl->tag_set));

	ctrl->tag_set.ops = &nvme_loop_mq_ops;
@@ -575,7 +588,7 @@ static int nvme_loop_create_io_queues(struct nvme_loop_ctrl *ctrl) 
		goto out_free_tagset;

	}



	for (i = 1; i <= opts->nr_io_queues; i++) {

	for (i = 1; i < ctrl->queue_count; i++) {

		ret = nvmf_connect_io_queue(&ctrl->ctrl, i);

		if (ret)

			goto out_cleanup_connect_q;
@@ -588,8 +601,7 @@ static int nvme_loop_create_io_queues(struct nvme_loop_ctrl *ctrl) 
out_free_tagset:

	blk_mq_free_tag_set(&ctrl->tag_set);

out_destroy_queues:

	for (i = 1; i < ctrl->queue_count; i++)

		nvmet_sq_destroy(&ctrl->queues[i].nvme_sq);

	nvme_loop_destroy_io_queues(ctrl);

	return ret;

}

drivers/nvme/target/nvmet.h

+1 −0
Original line number Diff line number Diff line
@@ -73,6 +73,7 @@ struct nvmet_sq { 
	u16			qid;

	u16			size;

	struct completion	free_done;

	struct completion	confirm_done;

};



/**

drivers/nvme/target/rdma.c

+3 −5
Original line number Diff line number Diff line
@@ -703,11 +703,6 @@ static void nvmet_rdma_handle_command(struct nvmet_rdma_queue *queue, 
{

	u16 status;



	cmd->queue = queue;

	cmd->n_rdma = 0;

	cmd->req.port = queue->port;





	ib_dma_sync_single_for_cpu(queue->dev->device,

		cmd->cmd->sge[0].addr, cmd->cmd->sge[0].length,

		DMA_FROM_DEVICE);
@@ -760,9 +755,12 @@ static void nvmet_rdma_recv_done(struct ib_cq *cq, struct ib_wc *wc) 


	cmd->queue = queue;

	rsp = nvmet_rdma_get_rsp(queue);

	rsp->queue = queue;

	rsp->cmd = cmd;

	rsp->flags = 0;

	rsp->req.cmd = cmd->nvme_cmd;

	rsp->req.port = queue->port;

	rsp->n_rdma = 0;



	if (unlikely(queue->state != NVMET_RDMA_Q_LIVE)) {

		unsigned long flags;