From: Peter Hurley
Date: Fri, 27 Nov 2015 14:18:39 -0500
> The N_X25 line discipline may access the previous line discipline's closed
> and already-freed private data on open [1].
>
> The tty->disc_data field _never_ refers to valid data on entry to the
> line discipline's open() method. Rather,
The N_X25 line discipline may access the previous line discipline's closed
and already-freed private data on open [1].
The tty->disc_data field _never_ refers to valid data on entry to the
line discipline's open() method. Rather, the ldisc is expected to
initialize that field for its own use for t
