--- y/security/integrity/iint.c
+++ i/security/integrity/iint.c
@@ -85,6 +85,17 @@ static void iint_free(struct integrity_i
 	kmem_cache_free(iint_cache, iint);
 }
 
+static void iint_annotate_mutex_key(struct integrity_iint_cache *iint, struct inode *inode)
+{
+#ifdef CONFIG_LOCKDEP
+	static struct lock_class_key iint_mutex_key[FILESYSTEM_MAX_STACK_DEPTH];
+
+	int depth = inode->i_sb->s_stack_depth;
+
+	lockdep_set_class(&iint->mutex, &iint_mutex_key[depth]);
+#endif
+}
+
 /**
  * integrity_inode_get - find or allocate an iint associated with an inode
  * @inode: pointer to the inode
@@ -114,6 +125,8 @@ struct integrity_iint_cache *integrity_i
 	if (!iint)
 		return NULL;
 
+	iint_annotate_mutex_key(iint, inode);
+
 	write_lock(&integrity_iint_lock);
 
 	p = &integrity_iint_tree.rb_node;