modprobe: ERROR: could not insert 'tty0tty': Device or resource busy about tty0tty HOT 9 OPEN

Please report what happens upon

sudo insmod /path/to/tty0tty.ko

from tty0tty.

from tty0tty.

from tty0tty.

This is what i got on sudo insmod /path/to/tty0tty.ko

waageesh@waageesh-Aspire-A715-75G:~/Downloads/Softwares/tty0tty/module$ sudo insmode tty0tty.ko 
sudo: insmode: command not found

from tty0tty.

from tty0tty.

new error as "operation not permitted error"

waageesh@waageesh-Aspire-A715-75G:~/Downloads/Softwares/tty0tty/module$ sudo insmod tty0tty.ko
insmod: ERROR: could not insert module tty0tty.ko: Operation not permitted

from tty0tty.

from tty0tty.

For what it is worth: it works for me

• compiles cleanly
• allowed to insmod

With sudo dmesg | tail -n 3 do I get

[ 1200.089467] tty0tty: loading out-of-tree module taints kernel.
[ 1200.089561] tty0tty: module verification failed: signature and/or required key missing - tainting kernel
[ 1200.094659] tty0tty null modem driver v1.2

And I do enjoy the dmks stuff from https://github.com/freemed/tty0tty/tree/master/debian (Upon new kernels I get new versions of tty0tty.) This is on Debian.

I think that original poster is being obstructed by some prevent loading of kernel modules that are not blessed by us measures. Such measures are often sold for "security" reasons.

So this issue now waits for updates like

• works for me on distro ...
• no problem here on distro ... version ...
• also got Operation not permitted on distro ... version ...
• also got Operation not permitted and could circumvent it with ...
• at $URL is documented how to cope this, following the process described over there allowed me to do what I want to do. Simply using tty0tty.

from tty0tty.

Lockdown: modprobe: unsigned module loading is restricted; see man kernel_lockdown.7

That is another issue (that is unrelated to the code base of tty0tty).

from tty0tty.