Unfortunately, it doesn't seem to be the same bug, but might be similar. I can still reporduce the issue with the upstream daily-build.
I can reproduce it on an Ubuntu Impish host (kernel 5.11.0-31-generic, systemd 248.3-1ubuntu3), running an Ubuntu Impish container (kernel 5.11.0-31-generic, systemd 249.743.g8fd4d27f3c+21.10.20210909132725 – daily upstream build from [ppa:ubuntu-support-team/systemd](https://launchpad.net/~ubuntu-support-team/+archive/ubuntu/systemd)) – or basically any container that uses the unified cgroups hierarchy (like Fedora 34, as mentioned before). Interestingly, in other places that try to read `memory.current` (cgtop.c/cgroup.c) there is a fallback to `memory.usage_in_bytes` if the system does not detect an all unified hierarchy. But those seem to be mutually exclusive: On a host using the **hybrid** hierarchy I can only see `memory.usage_in_bytes` (same goes for hybrid container on hybrid host): ``` $ find /sys/fs/cgroup/ -wholename *system.slice/memory.current $ find /sys/fs/cgroup/ -wholename *system.slice/memory.usage_in_bytes /sys/fs/cgroup/memory/system.slice/memory.usage_in_bytes ``` => Tests are skipped ("test-oomd-util: cgroups are not running in unified mode, skipping tests.") On a host using the **unified** hierarchy I can only see `memory.current` (same goes for unified container on unified host and hybrid container on unified host): ``` $ find /sys/fs/cgroup/ -wholename *system.slice/memory.current /sys/fs/cgroup/system.slice/memory.current $ find /sys/fs/cgroup/ -wholename *system.slice/memory.usage_in_bytes ``` => Tests pass as expected. BUT: Inside a **unified** container on a **hybrid** host, I can see neither: ``` $ find /sys/fs/cgroup/ -wholename *system.slice/memory.current $ find /sys/fs/cgroup/ -wholename *system.slice/memory.usage_in_bytes ``` => This is a problem. The test fails, because it cannot access `memory.current` but is not skiped either. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1942113 Title: systemd unit test regression in autopkgtest (oomd-utils) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/glibc/+bug/1942113/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
