If unused data exists in in_vq, ensure we flush that first and then detach unused buffers, which will ensure all buffers from the in_vq are removed.
Also ensure we free the buffers after detaching them. Signed-off-by: Amit Shah <[email protected]> --- drivers/char/virtio_console.c | 11 ++++++++--- 1 files changed, 8 insertions(+), 3 deletions(-) diff --git a/drivers/char/virtio_console.c b/drivers/char/virtio_console.c index a3f1f73..69d2e61 100644 --- a/drivers/char/virtio_console.c +++ b/drivers/char/virtio_console.c @@ -838,6 +838,8 @@ static const struct file_operations port_debugfs_ops = { /* Remove all port-specific data. */ static int remove_port(struct port *port) { + struct port_buffer *buf; + spin_lock_irq(&port->portdev->ports_lock); list_del(&port->list); spin_unlock_irq(&port->portdev->ports_lock); @@ -851,14 +853,17 @@ static int remove_port(struct port *port) if (port->guest_connected) send_control_msg(port, VIRTIO_CONSOLE_PORT_OPEN, 0); - while (port->in_vq->vq_ops->detach_unused_buf(port->in_vq)) - ; - sysfs_remove_group(&port->dev->kobj, &port_attribute_group); device_destroy(pdrvdata.class, port->dev->devt); cdev_del(&port->cdev); + /* Remove unused data this port might have received. */ discard_port_data(port); + + /* Remove buffers we queued up for the Host to send us data in. */ + while ((buf = port->in_vq->vq_ops->detach_unused_buf(port->in_vq))) + free_buf(buf); + kfree(port->name); debugfs_remove(port->debugfs_file); -- 1.6.2.5 _______________________________________________ Virtualization mailing list [email protected] https://lists.linux-foundation.org/mailman/listinfo/virtualization
