uinputdriver crashing with Segfault

[shinyquagsire23]

uinputdriver crashing with Segfault

[lubosz]

I have the same issue on Arch Linux, running Linux 4.13.5. Segfault in udev_device_get_devnode, hidtest works fine.

It works when I hardcode the uinput path:

    //char *uinput_path = udev_device_get_devnode(uinput);
    char *uinput_path = "/dev/uinput";

[shinyquagsire23]

uinput has a kernel module which needs to be loaded on boot, try sudo modprobe uinput and if that works, add a file for uinput in /etc/modules-load.d/

[freundTech]

Thanks. After loading uinput I'm no longer getting that error message, however now I'm getting a Segfault.
Running it with gdb tells me that the segfault occured in udev_device_get_devnode () from /usr/lib/libudev.so.1

[shinyquagsire23]

Make sure you're running as root? That function only takes one argument and it's checked to be NULL so I'm not sure what else it could be.

[freundTech]

Yes. I'm running it as root.
Here is a log of gdb running the program as root and the ldd output. Maybe that helps
libraries.txt
log.txt

Also hidtest works, so it seems to be a problem with udev/uinput.

[Rapti]

Having the exact same scenario. Any updates?

[Serisium]

I can confirm that @lubosz's fix worked on my system as well.

[Bionov]

Same error but since I'm new to linux I don't know where to put the workaround in the .c file.
I'm on Ubuntu 17.10 4.13.0-32-generic x86_64

[lubosz]

@Bionov grep uinput_path * -IR in the src directory

How would you do that on Windows?

[Bionov]

Thanks, I managed to do it, running into another error but not linked with this one.