[12073.476991] @cdev_alloc:
[12073.477003]   call cdev_alloc: success
[12073.477008] @alloc_chrdev_region:
[12073.477014]   call alloc_chrdev_region: success
[12073.477018] @register_chrdev_region:
[12073.477024]   call register_chrdev_region: success
[12073.477030] @cdev_init:
[12073.477035]   call cdev_init: success
[12073.477039] @cdev_add:
[12073.477045]   call cdev_add: success
[12073.571987] @MAJOR:
[12073.572001]   MAJOR is 246
[12073.572005] @MINOR:
[12073.572010]   MINOR is 0
[12073.572015] @container_of:
[12073.572019]   call container_of: success
[12073.575356] @copy_from_user:
[12073.575364]   call copy_from_user: success
[12073.577388] @copy_to_user:
[12073.577401]   call copy_to_user: success
[12073.583692] @cdev_del:
[12073.583704]   call cdev_del: success
[12073.583714] @unregister_chrdev_region:
[12073.583720]   call unregister_chrdev_region: success
