Re: Systemd units complains about cgroup with 5.15.x kernel

[Lennart Poettering <lennart@xxxxxxxxxxxxxx>]

On Do, 01.02.24 16:30, Thierry Bultel (thierry.bultel@xxxxxxxxxxx) wrote:

> Hi,
>
> I am using systemd v255,
> and currently using a kernel vendor branch :
>
> git@xxxxxxxxxx:varigit/linux-imx.git
> lf-5.15.y_var01
> imx_v7_defconfig
>
> I had no issue with the older 5.4 kernel.
>
> I have verified that the kernel has the following options:
>
> CONFIG_DEVTMPFS=y
> CONFIG_CGROUPS=y
> CONFIG_INOTIFY_USER=y
> CONFIG_SIGNALFD=y
> CONFIG_TIMERFD=y
> CONFIG_EPOLL=y
> CONFIG_UNIX=y
> CONFIG_SYSFS=y
> CONFIG_PROC_FS=y
> CONFIG_FHANDLE=y
>
> CONFIG_NET_NS=y
>
> CONFIG_SYSFS_DEPRECATED is not set
>
> CONFIG_AUTOFS_FS=y
> CONFIG_AUTOFS4_FS=y
> CONFIG_TMPFS_POSIX_ACL=y
> CONFIG_TMPFS_XATTR=y
>
> --->
>
> systemd is failing to start some units:
>
> systemd[1]: wpa_supplicant.service: Failed to create cgroup
> /system.slice/wpa_supplicant.service: No such file or directory
> and also;
>  (agetty)[217]: serial-getty@ttymxc0.service: Failed to attach to cgroup
> /system.slice/system-serial\x2dgetty.slice/serial-getty@ttymxc0.service: No
> medium found
>
> ... and I do not have a serial console.
>
> I am currently digging into systemd code to find out what is possibly wrong
> .. but if anyone gets a clue, I would appreciate !

Educated guess, you have no cgroupvs2 or so?

Would make sense to provide logs?, use strace to check what precisely
fails?

Ask you distro for help?

Lennart

--
Lennart Poettering, Berlin