block-6.9-20240503

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Merge tag 'block-6.9-20240503' of git://git.kernel.dk/linux

Pull block fixes from Jens Axboe:
 "Nothing major in here - an nvme pull request with mostly auth/tcp
  fixes, and a single fix for ublk not setting segment count and size
  limits"

* tag 'block-6.9-20240503' of git://git.kernel.dk/linux:
  nvme-tcp: strict pdu pacing to avoid send stalls on TLS
  nvmet: fix nvme status code when namespace is disabled
  nvmet-tcp: fix possible memory leak when tearing down a controller
  nvme: cancel pending I/O if nvme controller is in terminal state
  nvmet-auth: replace pr_debug() with pr_err() to report an error.
  nvmet-auth: return the error code to the nvmet_auth_host_hash() callers
  nvme: find numa distance only if controller has valid numa id
  ublk: remove segment count and size limits
  nvme: fix warn output about shared namespaces without CONFIG_NVME_MULTIPATH

drivers/block/ublk_drv.c

@@ -2177,7 +2177,8 @@ static int ublk_ctrl_start_dev(struct ublk_device *ub, struct io_uring_cmd *cmd)
 		.max_hw_sectors		= p->max_sectors,
 		.chunk_sectors		= p->chunk_sectors,
 		.virt_boundary_mask	= p->virt_boundary_mask,
-
+		.max_segments		= USHRT_MAX,
+		.max_segment_size	= UINT_MAX,
 	};
 	struct gendisk *disk;
 	int ret = -EINVAL;

drivers/nvme/host/core.c

@@ -628,27 +628,6 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
 }
 EXPORT_SYMBOL_GPL(nvme_change_ctrl_state);
 
-/*
- * Returns true for sink states that can't ever transition back to live.
- */
-static bool nvme_state_terminal(struct nvme_ctrl *ctrl)
-{
-	switch (nvme_ctrl_state(ctrl)) {
-	case NVME_CTRL_NEW:
-	case NVME_CTRL_LIVE:
-	case NVME_CTRL_RESETTING:
-	case NVME_CTRL_CONNECTING:
-		return false;
-	case NVME_CTRL_DELETING:
-	case NVME_CTRL_DELETING_NOIO:
-	case NVME_CTRL_DEAD:
-		return true;
-	default:
-		WARN_ONCE(1, "Unhandled ctrl state:%d", ctrl->state);
-		return true;
-	}
-}
-
 /*
  * Waits for the controller state to be resetting, or returns false if it is
  * not possible to ever transition to that state.
@@ -3681,7 +3660,7 @@ static int nvme_init_ns_head(struct nvme_ns *ns, struct nvme_ns_info *info)
 				"Found shared namespace %d, but multipathing not supported.\n",
 				info->nsid);
 			dev_warn_once(ctrl->device,
-				"Support for shared namespaces without CONFIG_NVME_MULTIPATH is deprecated and will be removed in Linux 6.0\n.");
+				"Support for shared namespaces without CONFIG_NVME_MULTIPATH is deprecated and will be removed in Linux 6.0.\n");
 		}
 	}
 

drivers/nvme/host/multipath.c

@@ -247,7 +247,8 @@ static struct nvme_ns *__nvme_find_path(struct nvme_ns_head *head, int node)
 		if (nvme_path_is_disabled(ns))
 			continue;
 
-		if (READ_ONCE(head->subsys->iopolicy) == NVME_IOPOLICY_NUMA)
+		if (ns->ctrl->numa_node != NUMA_NO_NODE &&
+		    READ_ONCE(head->subsys->iopolicy) == NVME_IOPOLICY_NUMA)
 			distance = node_distance(node, ns->ctrl->numa_node);
 		else
 			distance = LOCAL_DISTANCE;

drivers/nvme/host/nvme.h

@@ -741,6 +741,27 @@ static inline bool nvme_is_aen_req(u16 qid, __u16 command_id)
 		nvme_tag_from_cid(command_id) >= NVME_AQ_BLK_MQ_DEPTH;
 }
 
+/*
+ * Returns true for sink states that can't ever transition back to live.
+ */
+static inline bool nvme_state_terminal(struct nvme_ctrl *ctrl)
+{
+	switch (nvme_ctrl_state(ctrl)) {
+	case NVME_CTRL_NEW:
+	case NVME_CTRL_LIVE:
+	case NVME_CTRL_RESETTING:
+	case NVME_CTRL_CONNECTING:
+		return false;
+	case NVME_CTRL_DELETING:
+	case NVME_CTRL_DELETING_NOIO:
+	case NVME_CTRL_DEAD:
+		return true;
+	default:
+		WARN_ONCE(1, "Unhandled ctrl state:%d", ctrl->state);
+		return true;
+	}
+}
+
 void nvme_complete_rq(struct request *req);
 void nvme_complete_batch_req(struct request *req);
 

drivers/nvme/host/pci.c

@@ -1286,6 +1286,9 @@ static enum blk_eh_timer_return nvme_timeout(struct request *req)
 	u32 csts = readl(dev->bar + NVME_REG_CSTS);
 	u8 opcode;
 
+	if (nvme_state_terminal(&dev->ctrl))
+		goto disable;
+
 	/* If PCI error recovery process is happening, we cannot reset or
 	 * the recovery mechanism will surely fail.
 	 */
@@ -1390,8 +1393,11 @@ static enum blk_eh_timer_return nvme_timeout(struct request *req)
 	return BLK_EH_RESET_TIMER;
 
 disable:
-	if (!nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_RESETTING))
+	if (!nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_RESETTING)) {
+		if (nvme_state_terminal(&dev->ctrl))
+			nvme_dev_disable(dev, true);
 		return BLK_EH_DONE;
+	}
 
 	nvme_dev_disable(dev, false);
 	if (nvme_try_sched_reset(&dev->ctrl))

drivers/nvme/host/tcp.c

@@ -360,12 +360,18 @@ static inline void nvme_tcp_send_all(struct nvme_tcp_queue *queue)
 	} while (ret > 0);
 }
 
-static inline bool nvme_tcp_queue_more(struct nvme_tcp_queue *queue)
+static inline bool nvme_tcp_queue_has_pending(struct nvme_tcp_queue *queue)
 {
 	return !list_empty(&queue->send_list) ||
 		!llist_empty(&queue->req_list);
 }
 
+static inline bool nvme_tcp_queue_more(struct nvme_tcp_queue *queue)
+{
+	return !nvme_tcp_tls(&queue->ctrl->ctrl) &&
+		nvme_tcp_queue_has_pending(queue);
+}
+
 static inline void nvme_tcp_queue_request(struct nvme_tcp_request *req,
 		bool sync, bool last)
 {
@@ -386,7 +392,7 @@ static inline void nvme_tcp_queue_request(struct nvme_tcp_request *req,
 		mutex_unlock(&queue->send_mutex);
 	}
 
-	if (last && nvme_tcp_queue_more(queue))
+	if (last && nvme_tcp_queue_has_pending(queue))
 		queue_work_on(queue->io_cpu, nvme_tcp_wq, &queue->io_work);
 }
 

drivers/nvme/target/auth.c

@@ -285,9 +285,9 @@ int nvmet_auth_host_hash(struct nvmet_req *req, u8 *response,
 	}
 
 	if (shash_len != crypto_shash_digestsize(shash_tfm)) {
-		pr_debug("%s: hash len mismatch (len %d digest %d)\n",
-			 __func__, shash_len,
-			 crypto_shash_digestsize(shash_tfm));
+		pr_err("%s: hash len mismatch (len %d digest %d)\n",
+			__func__, shash_len,
+			crypto_shash_digestsize(shash_tfm));
 		ret = -EINVAL;
 		goto out_free_tfm;
 	}
@@ -370,7 +370,7 @@ out_free_response:
 	nvme_auth_free_key(transformed_key);
 out_free_tfm:
 	crypto_free_shash(shash_tfm);
-	return 0;
+	return ret;
 }
 
 int nvmet_auth_ctrl_hash(struct nvmet_req *req, u8 *response,

drivers/nvme/target/configfs.c

@@ -754,6 +754,19 @@ static struct configfs_attribute *nvmet_ns_attrs[] = {
 	NULL,
 };
 
+bool nvmet_subsys_nsid_exists(struct nvmet_subsys *subsys, u32 nsid)
+{
+	struct config_item *ns_item;
+	char name[4] = {};
+
+	if (sprintf(name, "%u", nsid) <= 0)
+		return false;
+	mutex_lock(&subsys->namespaces_group.cg_subsys->su_mutex);
+	ns_item = config_group_find_item(&subsys->namespaces_group, name);
+	mutex_unlock(&subsys->namespaces_group.cg_subsys->su_mutex);
+	return ns_item != NULL;
+}
+
 static void nvmet_ns_release(struct config_item *item)
 {
 	struct nvmet_ns *ns = to_nvmet_ns(item);

drivers/nvme/target/core.c

@@ -437,10 +437,13 @@ void nvmet_stop_keep_alive_timer(struct nvmet_ctrl *ctrl)
 u16 nvmet_req_find_ns(struct nvmet_req *req)
 {
 	u32 nsid = le32_to_cpu(req->cmd->common.nsid);
+	struct nvmet_subsys *subsys = nvmet_req_subsys(req);
 
-	req->ns = xa_load(&nvmet_req_subsys(req)->namespaces, nsid);
+	req->ns = xa_load(&subsys->namespaces, nsid);
 	if (unlikely(!req->ns)) {
 		req->error_loc = offsetof(struct nvme_common_command, nsid);
+		if (nvmet_subsys_nsid_exists(subsys, nsid))
+			return NVME_SC_INTERNAL_PATH_ERROR;
 		return NVME_SC_INVALID_NS | NVME_SC_DNR;
 	}
 

drivers/nvme/target/nvmet.h

@@ -543,6 +543,7 @@ void nvmet_subsys_disc_changed(struct nvmet_subsys *subsys,
 		struct nvmet_host *host);
 void nvmet_add_async_event(struct nvmet_ctrl *ctrl, u8 event_type,
 		u8 event_info, u8 log_page);
+bool nvmet_subsys_nsid_exists(struct nvmet_subsys *subsys, u32 nsid);
 
 #define NVMET_MIN_QUEUE_SIZE	16
 #define NVMET_MAX_QUEUE_SIZE	1024

drivers/nvme/target/tcp.c

@@ -348,6 +348,7 @@ static int nvmet_tcp_check_ddgst(struct nvmet_tcp_queue *queue, void *pdu)
 	return 0;
 }
 
+/* If cmd buffers are NULL, no operation is performed */
 static void nvmet_tcp_free_cmd_buffers(struct nvmet_tcp_cmd *cmd)
 {
 	kfree(cmd->iov);
@@ -1581,13 +1582,9 @@ static void nvmet_tcp_free_cmd_data_in_buffers(struct nvmet_tcp_queue *queue)
 	struct nvmet_tcp_cmd *cmd = queue->cmds;
 	int i;
 
-	for (i = 0; i < queue->nr_cmds; i++, cmd++) {
-		if (nvmet_tcp_need_data_in(cmd))
-			nvmet_tcp_free_cmd_buffers(cmd);
-	}
-
-	if (!queue->nr_cmds && nvmet_tcp_need_data_in(&queue->connect))
-		nvmet_tcp_free_cmd_buffers(&queue->connect);
+	for (i = 0; i < queue->nr_cmds; i++, cmd++)
+		nvmet_tcp_free_cmd_buffers(cmd);
+	nvmet_tcp_free_cmd_buffers(&queue->connect);
 }
 
 static void nvmet_tcp_release_queue_work(struct work_struct *w)