diff --git a/include/linux/slub_def.h b/include/linux/slub_def.h
index 9f59fc16444b..2b4417aa15d8 100644
--- a/include/linux/slub_def.h
+++ b/include/linux/slub_def.h
@@ -100,7 +100,7 @@ struct kmem_cache {
 	void (*ctor)(void *);
 	int inuse;		/* Offset to metadata */
 	int align;		/* Alignment */
-	int reserved;		/* Reserved bytes at the end of slabs */
+	unsigned int reserved;		/* Reserved bytes at the end of slabs */
 	unsigned int red_left_pad;	/* Left redzone padding size */
 	const char *name;	/* Name (only for display!) */
 	struct list_head list;	/* List of slab caches */
diff --git a/mm/slub.c b/mm/slub.c
index 97dd2db30acb..e38221c13b07 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -5094,7 +5094,7 @@ SLAB_ATTR_RO(destroy_by_rcu);
 
 static ssize_t reserved_show(struct kmem_cache *s, char *buf)
 {
-	return sprintf(buf, "%d\n", s->reserved);
+	return sprintf(buf, "%u\n", s->reserved);
 }
 SLAB_ATTR_RO(reserved);