Arch Linux

miko

Member

From: Poland

Registered: 2006-04-16

Posts: 49

Kernel 5.18 and v4l2loopback: Missing ENDBR

Just to let you know: while trying to modprobe v4l2loopback  I got a kernel bug:

kernel: traps: Missing ENDBR: init_module+0x0/0x1000 [v4l2loopback]

The usual workaround with ibt=off kernel parameter fixes this.

loqs

Member

Registered: 2014-03-06

Posts: 18,893

Re: Kernel 5.18 and v4l2loopback: Missing ENDBR

Have you contacted the author of the module to let them know about the issue?

pswiatki

Member

Registered: 2022-06-04

Posts: 30

Re: Kernel 5.18 and v4l2loopback: Missing ENDBR

Yup, same here. Got the bug when starting up the Virtual Camera i OBS. In previous kernel versions it worked flawlesly.
If I may ask - how do I find the author? Kernel sources?

loqs

Member

Registered: 2014-03-06

Posts: 18,893

Re: Kernel 5.18 and v4l2loopback: Missing ENDBR

I believe the author has already been contacted https://github.com/umlaeute/v4l2loopback/issues/476

pswiatki

Member

Registered: 2022-06-04

Posts: 30

Re: Kernel 5.18 and v4l2loopback: Missing ENDBR

Thank you much @loqs. I updated that thread on Github. By the way: when I use

ibt=off

my Chromium browser hangs and the system journal registers:

Jun 04 21:47:20 sdr-aptv kernel: v4l2loopback driver version 0.12.5 loaded
Jun 04 21:49:31 sdr-aptv kernel: INFO: task kworker/u32:0:8 blocked for more than 122 seconds.
Jun 04 21:49:31 sdr-aptv kernel:       Tainted: G           OE     5.18.1-arch1-1 #1

Last edited by pswiatki (2022-06-05 08:09:51)