Merge tag 'block-6.18-20251120' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux

Pull block fixes from Jens Axboe:
"NVMe pull request via Keith:

- Admin queue use-after-free fix (Keith)

- Target authentication fix (Alistar)

- Multipath lockdeup fix (Shin'ichiro)

- FC transport teardown fixes (Ewan)"

* tag 'block-6.18-20251120' of git://git.kernel.org/pub/scm/linux/kernel/git/axboe/linux:
nvme: nvme-fc: Ensure ->ioerr_work is cancelled in nvme_fc_delete_ctrl()
nvme: nvme-fc: move tagset removal to nvme_fc_delete_ctrl()
nvme-multipath: fix lockdep WARN due to partition scan work
nvmet-auth: update sc_c in target host hash calculation
nvme: fix admin request_queue lifetime

drivers/nvme/host/core.c

···
 	 */
 	nvme_stop_keep_alive(ctrl);
 	blk_mq_destroy_queue(ctrl->admin_q);
-	blk_put_queue(ctrl->admin_q);
 	if (ctrl->ops->flags & NVME_F_FABRICS) {
 		blk_mq_destroy_queue(ctrl->fabrics_q);
 		blk_put_queue(ctrl->fabrics_q);
···
 		container_of(dev, struct nvme_ctrl, ctrl_device);
 	struct nvme_subsystem *subsys = ctrl->subsys;
 
+	if (ctrl->admin_q)
+		blk_put_queue(ctrl->admin_q);
 	if (!subsys || ctrl->instance != subsys->instance)
 		ida_free(&nvme_instance_ida, ctrl->instance);
 	nvme_free_cels(ctrl);

drivers/nvme/host/fc.c

···
 		container_of(ref, struct nvme_fc_ctrl, ref);
 	unsigned long flags;
 
-	if (ctrl->ctrl.tagset)
-		nvme_remove_io_tag_set(&ctrl->ctrl);
-
 	/* remove from rport list */
 	spin_lock_irqsave(&ctrl->rport->lock, flags);
 	list_del(&ctrl->ctrl_list);
 	spin_unlock_irqrestore(&ctrl->rport->lock, flags);
-
-	nvme_unquiesce_admin_queue(&ctrl->ctrl);
-	nvme_remove_admin_tag_set(&ctrl->ctrl);
 
 	kfree(ctrl->queues);
 
···
 {
 	struct nvme_fc_ctrl *ctrl = to_fc_ctrl(nctrl);
 
-	cancel_work_sync(&ctrl->ioerr_work);
 	cancel_delayed_work_sync(&ctrl->connect_work);
+
 	/*
 	 * kill the association on the link side.  this will block
 	 * waiting for io to terminate
 	 */
 	nvme_fc_delete_association(ctrl);
+	cancel_work_sync(&ctrl->ioerr_work);
+
+	if (ctrl->ctrl.tagset)
+		nvme_remove_io_tag_set(&ctrl->ctrl);
+
+	nvme_unquiesce_admin_queue(&ctrl->ctrl);
+	nvme_remove_admin_tag_set(&ctrl->ctrl);
 }
 
 static void

drivers/nvme/host/multipath.c

···
 			return;
 		}
 		nvme_add_ns_head_cdev(head);
-		kblockd_schedule_work(&head->partition_scan_work);
+		queue_work(nvme_wq, &head->partition_scan_work);
 	}
 
 	nvme_mpath_add_sysfs_link(ns->head);

drivers/nvme/target/auth.c

···
 	const char *hash_name;
 	u8 *challenge = req->sq->dhchap_c1;
 	struct nvme_dhchap_key *transformed_key;
-	u8 buf[4], sc_c = ctrl->concat ? 1 : 0;
+	u8 buf[4];
 	int ret;
 
 	hash_name = nvme_auth_hmac_name(ctrl->shash_id);
···
 	ret = crypto_shash_update(shash, buf, 2);
 	if (ret)
 		goto out;
-	*buf = sc_c;
+	*buf = req->sq->sc_c;
 	ret = crypto_shash_update(shash, buf, 1);
 	if (ret)
 		goto out;

drivers/nvme/target/fabrics-cmd-auth.c

···
 		 data->auth_protocol[0].dhchap.halen,
 		 data->auth_protocol[0].dhchap.dhlen);
 	req->sq->dhchap_tid = le16_to_cpu(data->t_id);
+	req->sq->sc_c = data->sc_c;
 	if (data->sc_c != NVME_AUTH_SECP_NOSC) {
 		if (!IS_ENABLED(CONFIG_NVME_TARGET_TCP_TLS))
 			return NVME_AUTH_DHCHAP_FAILURE_CONCAT_MISMATCH;

drivers/nvme/target/nvmet.h

···
 	bool			authenticated;
 	struct delayed_work	auth_expired_work;
 	u16			dhchap_tid;
+	u8			sc_c;
 	u8			dhchap_status;
 	u8			dhchap_step;
 	u8			*dhchap_c1;