4 files changed, 27 insertions, 0 deletions
diff --git a/drivers/nvme/target/configfs.c b/drivers/nvme/target/configfs.c
index cd52b9f15376..98613a45bd3b 100644
--- a/drivers/nvme/target/configfs.c
+++ b/drivers/nvme/target/configfs.c
@@ -675,6 +675,7 @@ static void nvmet_port_subsys_drop_link(struct config_item *parent,
 
 found:
 	list_del(&p->entry);
+	nvmet_port_del_ctrls(port, subsys);
 	nvmet_port_disc_changed(port, subsys);
 
 	if (list_empty(&port->subsystems))
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c
index dad0243c7c96..3a67e244e568 100644
--- a/drivers/nvme/target/core.c
+++ b/drivers/nvme/target/core.c
@@ -46,6 +46,9 @@ inline u16 errno_to_nvme_status(struct nvmet_req *req, int errno)
 	u16 status;
 
 	switch (errno) {
+	case 0:
+		status = NVME_SC_SUCCESS;
+		break;
 	case -ENOSPC:
 		req->error_loc = offsetof(struct nvme_rw_command, length);
 		status = NVME_SC_CAP_EXCEEDED | NVME_SC_DNR;
@@ -280,6 +283,18 @@ void nvmet_unregister_transport(const struct nvmet_fabrics_ops *ops)
 }
 EXPORT_SYMBOL_GPL(nvmet_unregister_transport);
 
+void nvmet_port_del_ctrls(struct nvmet_port *port, struct nvmet_subsys *subsys)
+{
+	struct nvmet_ctrl *ctrl;
+
+	mutex_lock(&subsys->lock);
+	list_for_each_entry(ctrl, &subsys->ctrls, subsys_entry) {
+		if (ctrl->port == port)
+			ctrl->ops->delete_ctrl(ctrl);
+	}
+	mutex_unlock(&subsys->lock);
+}
+
 int nvmet_enable_port(struct nvmet_port *port)
 {
 	const struct nvmet_fabrics_ops *ops;
diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c
index b16dc3981c69..0940c5024a34 100644
--- a/drivers/nvme/target/loop.c
+++ b/drivers/nvme/target/loop.c
@@ -654,6 +654,14 @@ static void nvme_loop_remove_port(struct nvmet_port *port)
 	mutex_lock(&nvme_loop_ports_mutex);
 	list_del_init(&port->entry);
 	mutex_unlock(&nvme_loop_ports_mutex);
+
+	/*
+	 * Ensure any ctrls that are in the process of being
+	 * deleted are in fact deleted before we return
+	 * and free the port. This is to prevent active
+	 * ctrls from using a port after it's freed.
+	 */
+	flush_workqueue(nvme_delete_wq);
 }
 
 static const struct nvmet_fabrics_ops nvme_loop_ops = {
diff --git a/drivers/nvme/target/nvmet.h b/drivers/nvme/target/nvmet.h
index 6ee66c610739..c51f8dd01dc4 100644
--- a/drivers/nvme/target/nvmet.h
+++ b/drivers/nvme/target/nvmet.h
@@ -418,6 +418,9 @@ void nvmet_port_send_ana_event(struct nvmet_port *port);
 int nvmet_register_transport(const struct nvmet_fabrics_ops *ops);
 void nvmet_unregister_transport(const struct nvmet_fabrics_ops *ops);
 
+void nvmet_port_del_ctrls(struct nvmet_port *port,
+			  struct nvmet_subsys *subsys);
+
 int nvmet_enable_port(struct nvmet_port *port);
 void nvmet_disable_port(struct nvmet_port *port);