diff --git a/sys/compat/linuxkpi/common/include/linux/kobject.h b/sys/compat/linuxkpi/common/include/linux/kobject.h
--- a/sys/compat/linuxkpi/common/include/linux/kobject.h
+++ b/sys/compat/linuxkpi/common/include/linux/kobject.h
@@ -68,6 +68,8 @@
 	mode_t		mode;
 };
 
+extern const struct sysfs_ops kobj_sysfs_ops;
+
 struct kobj_attribute {
 	struct attribute attr;
 	ssize_t (*show)(struct kobject *kobj, struct kobj_attribute *attr,
diff --git a/sys/compat/linuxkpi/common/src/linux_compat.c b/sys/compat/linuxkpi/common/src/linux_compat.c
--- a/sys/compat/linuxkpi/common/src/linux_compat.c
+++ b/sys/compat/linuxkpi/common/src/linux_compat.c
@@ -282,6 +282,36 @@
 	.release = linux_kobject_kfree
 };
 
+static ssize_t
+lkpi_kobj_attr_show(struct kobject *kobj, struct attribute *attr, char *buf)
+{
+	struct kobj_attribute *ka =
+	    container_of(attr, struct kobj_attribute, attr);
+
+	if (ka->show == NULL)
+		return (-EIO);
+
+	return (ka->show(kobj, ka, buf));
+}
+
+static ssize_t
+lkpi_kobj_attr_store(struct kobject *kobj, struct attribute *attr,
+    const char *buf, size_t count)
+{
+	struct kobj_attribute *ka =
+	    container_of(attr, struct kobj_attribute, attr);
+
+	if (ka->store == NULL)
+		return (-EIO);
+
+	return (ka->store(kobj, ka, buf, count));
+}
+
+const struct sysfs_ops kobj_sysfs_ops = {
+	.show	= lkpi_kobj_attr_show,
+	.store	= lkpi_kobj_attr_store,
+};
+
 static void
 linux_device_release(struct device *dev)
 {