kernel: fbdev: defio: fix the pagelist corruption

In the Linux kernel, the following vulnerability has been resolved: fbdev: defio: fix the pagelist corruption Easily hit the below list corruption: == listadd corruption. prev-next should be next ffffffffc0ceb090, but was ffffec604507edc8. prev=ffffec604507edc8. WARNING: CPU: 65 PID: 3959 at...