diff --git a/drivers/block/null_blk_zoned.c b/drivers/block/null_blk_zoned.c
index 1a74871f1bfdd12a894155e9c84452d534f42520..f64e9122824b4265a2d107804f2eb99f0b31156c 100644
--- a/drivers/block/null_blk_zoned.c
+++ b/drivers/block/null_blk_zoned.c
@@ -52,6 +52,7 @@ int null_zone_init(struct nullb_device *dev)
 void null_zone_exit(struct nullb_device *dev)
 {
 	kvfree(dev->zones);
+	dev->zones = NULL;
 }
 
 static void null_zone_fill_bio(struct nullb_device *dev, struct bio *bio,