cxl: Constify struct kobj_type

Hongbo Li · gregkh · commit 5c09cfa5d21c · 2024-09-11T16:02:50.000+02:00
This 'struct kobj_type' is not modified. It is only used in kobject_init_and_add() which takes a 'const struct kobj_type *ktype' parameter. Constifying this structure and moving it to a read-only section, and can increase over all security. Signed-off-by: Hongbo Li <lihongbo22@huawei.com> Link: https://lore.kernel.org/r/20240904011951.2010646-1-lihongbo22@huawei.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/misc/cxl/sysfs.c b/drivers/misc/cxl/sysfs.c
@@ -579,7 +579,7 @@ static void release_afu_config_record(struct kobject *kobj)
 	kfree(cr);
 }
 
-static struct kobj_type afu_config_record_type = {
+static const struct kobj_type afu_config_record_type = {
 	.sysfs_ops = &kobj_sysfs_ops,
 	.release = release_afu_config_record,
 	.default_groups = afu_cr_groups,

Original file line number	Diff line number	Diff line change
`@@ -579,7 +579,7 @@ static void release_afu_config_record(struct kobject *kobj)`
`579`	`579`	`kfree(cr);`
`580`	`580`	`}`
`581`	`581`
`582`		`-static struct kobj_type afu_config_record_type = {`
	`582`	`+static const struct kobj_type afu_config_record_type = {`
`583`	`583`	`.sysfs_ops = &kobj_sysfs_ops,`
`584`	`584`	`.release = release_afu_config_record,`
`585`	`585`	`.default_groups = afu_cr_groups,`