Public bug reported:
Detail of v4l2lookback DKMS module failing to compile on `linux-
image-7.0.0-28-generic`:
--8<--
DKMS make.log for v4l2loopback-0.12.7 for kernel 7.0.0-28-generic (x86_64)
Fri Jul 17 07:46:50 CEST 2026
Building v4l2-loopback driver...
make -C /lib/modules/7.0.0-28-generic/build
M=/var/lib/dkms/v4l2loopback/0.12.7/build modules
make[1]: Entering directory '/usr/src/linux-headers-7.0.0-28-generic'
make[2] : on entre dans le répertoire « /var/lib/dkms/v4l2loopback/0.12.7/build
»
warning: the compiler differs from the one used to build the kernel
The kernel was built by: x86_64-linux-gnu-gcc-13 (Ubuntu
13.3.0-6ubuntu2~24.04.1) 13.3.0
You are using: gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04.1) 13.3.0
warning: pahole version differs from the one used to build the kernel
The kernel was built with: 125
You are using: 0
CC [M] v4l2loopback.o
v4l2loopback.c: In function ‘v4l2_loopback_open’:
v4l2loopback.c:2089:9: error: too few arguments to function ‘v4l2_fh_add’
2089 | v4l2_fh_add(&opener->fh);
| ^~~~~~~~~~~
In file included from
/usr/src/linux-headers-7.0.0-28-generic/include/media/v4l2-subdev.h:17,
from
/usr/src/linux-headers-7.0.0-28-generic/include/media/v4l2-device.h:13,
from v4l2loopback.c:31:
/usr/src/linux-headers-7.0.0-28-generic/include/media/v4l2-fh.h:97:6: note:
declared here
97 | void v4l2_fh_add(struct v4l2_fh *fh, struct file *filp);
| ^~~~~~~~~~~
v4l2loopback.c: In function ‘v4l2_loopback_close’:
v4l2loopback.c:2117:9: error: too few arguments to function ‘v4l2_fh_del’
2117 | v4l2_fh_del(&opener->fh);
| ^~~~~~~~~~~
/usr/src/linux-headers-7.0.0-28-generic/include/media/v4l2-fh.h:125:6: note:
declared here
125 | void v4l2_fh_del(struct v4l2_fh *fh, struct file *filp);
| ^~~~~~~~~~~
make[4]: ***
[/usr/src/linux-headers-7.0.0-28-generic/scripts/Makefile.build:289 :
v4l2loopback.o] Erreur 1
make[3]: *** [/usr/src/linux-headers-7.0.0-28-generic/Makefile:2115 : .] Erreur
2
make[2]: *** [/usr/src/linux-headers-7.0.0-28-generic/Makefile:248 :
__sub-make] Erreur 2
make[2] : on quitte le répertoire « /var/lib/dkms/v4l2loopback/0.12.7/build »
make[1]: *** [Makefile:248: __sub-make] Error 2
make[1]: Leaving directory '/usr/src/linux-headers-7.0.0-28-generic'
make: *** [Makefile:43: v4l2loopback.ko] Error 2
-->8--
ProblemType: Package
DistroRelease: Ubuntu 24.04
Package: v4l2loopback-dkms 0.12.7-2ubuntu5.1
ProcVersionSignature: Ubuntu 6.17.0-40.40~24.04.1-generic 6.17.13
Uname: Linux 6.17.0-40-generic x86_64
ApportVersion: 2.28.2-0ubuntu0.1
Architecture: amd64
CasperMD5CheckResult: pass
DKMSKernelVersion: 7.0.0-28-generic
Date: Fri Jul 17 07:41:19 2026
DuplicateSignature:
dkms:v4l2loopback-dkms:0.12.7-2ubuntu5.1:v4l2loopback.c:2089:9: error: too few
arguments to function ‘v4l2_fh_add’
InstallationDate: Installed on 2025-10-28 (262 days ago)
InstallationMedia: Ubuntu 24.04.3 LTS "Noble Numbat" - Release amd64
(20250805.1)
PackageArchitecture: all
PackageVersion: 0.12.7-2ubuntu5.1
Python3Details: /usr/bin/python3.12, Python 3.12.3, python3-minimal,
3.12.3-0ubuntu2.1
PythonDetails: N/A
RelatedPackageVersions:
dpkg 1.22.6ubuntu6.6
apt 2.8.3
SourcePackage: v4l2loopback
Title: v4l2loopback-dkms 0.12.7-2ubuntu5.1: v4l2loopback kernel module failed
to build
UpgradeStatus: No upgrade log present (probably fresh install)
** Affects: v4l2loopback (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-package need-duplicate-check noble third-party-packages
--
You received this bug notification because you are a member of Ubuntu
Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/2161049
Title:
v4l2loopback-dkms 0.12.7-2ubuntu5.1: v4l2loopback kernel module failed
to build
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/v4l2loopback/+bug/2161049/+subscriptions
--
ubuntu-bugs mailing list
[email protected]
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
