diff --git a/mm/hwpoison-inject.c b/mm/hwpoison-inject.c
index 6e35e56..ac692a9 100644
--- a/mm/hwpoison-inject.c
+++ b/mm/hwpoison-inject.c
@@ -3,6 +3,7 @@
 #include <linux/debugfs.h>
 #include <linux/kernel.h>
 #include <linux/mm.h>
+#include "internal.h"
 
 static struct dentry *hwpoison_dir;
 
@@ -54,6 +55,16 @@
 	if (!dentry)
 		goto fail;
 
+	dentry = debugfs_create_u32("corrupt-filter-dev-major", 0600,
+				    hwpoison_dir, &hwpoison_filter_dev_major);
+	if (!dentry)
+		goto fail;
+
+	dentry = debugfs_create_u32("corrupt-filter-dev-minor", 0600,
+				    hwpoison_dir, &hwpoison_filter_dev_minor);
+	if (!dentry)
+		goto fail;
+
 	return 0;
 fail:
 	pfn_inject_exit();