modprobe: ERROR: could not insert 'v4l2loopback': Exec format error

[AmineMarnissi]

modprobe: ERROR: could not insert 'v4l2loopback': Exec format error

[moacirrf]

Hi, maybe it help

1. Try to identify if all dependencies are loaded:
   modinfo v4l2loopback.ko

will show something like

depends: videodev

2. load this module first
   sudo modprobe videodev

3. Try to load directly from the folder that you compile
   sudo insmod v4l2loopback.ko

4. check with dmesg command

[umlaeute]

i strongly suspect this to be a duplicate of

• #313
• #260
• #238
• #208
• #147

(btw, you can search old issues (open or closed) to see whether your problem was already reported)

[umlaeute]

after doing slightly more research (basically doing a websearch for "PLT section(s) missing"), i found this Debian bug:

• linux: No rule to make target 'scripts/module.lds' while building out-of-tree modules

(note that this is not the same issue as the ones listed in my previous comment)

however, it also confirms that the issue is not within v4l2loopback, but rather with the kernel packaging. the bug was discovered (and fixed) in 2020, so your "Ubuntu 20.04" might well be affected.

so i'm afraid this is out of scope for us.