Status changed to 'Confirmed' because the bug affects multiple users.
** Changed in: linux-signed (Ubuntu)
Status: New => Confirmed
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** Package changed: linux (Ubuntu) => linux-signed (Ubuntu)
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https://bugs.launchpad.net/bugs/2050098
Title:
cgroup2 appears to be broken
Status in linux-signed pack
** Description changed:
We're using Slurm workload manager in a cluster with Ubuntu 22.04 and
the linux-generic kernel (amd64). We use cgroups (cgroup2) for resource
allocation with Slurm. With kernel version
linux-image-5.15.0-91-generic 5.15.0-91.101
amd64
- I'm seeing a
I narrowed this down a bit further. Last working kernel version is
5.15.0-89-generic. The problem starts to show up with 5.15.0-90-generic.
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https://bugs.launchpad.net/bugs/20
Seems like the problem occurs here
```
[2024-01-22T17:13:16.819] [63786.0] cgroup/v2: cgroup_p_constrain_apply:
CGROUP: EBPF Closing and loading bpf program into
/sys/fs/cgroup/system.slice/slurmstepd.scope/job_63786/step_0/user
[2024-01-22T17:13:16.819] [63786.0] error: load_ebpf_prog: BPF load
I just noticed that 5.15.0-94.104 is available in jammy-proposed and
tested that. Same problem as with -91
I've enabled debug messages for slurmd with regards to cgroup, log
attached.
** Attachment added: "Slurmd cgroup debug log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/2050098/+
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