diff --git a/drivers/block/loop.c b/drivers/block/loop.c
index 66cfff7..edbaac6 100644
--- a/drivers/block/loop.c
+++ b/drivers/block/loop.c
@@ -919,6 +919,7 @@
 
 	kthread_stop(lo->lo_thread);
 
+	lo->lo_queue->unplug_fn = NULL;
 	lo->lo_backing_file = NULL;
 
 	loop_release_xfer(lo);