Public bug reported:
docker update --memory=128M --memory-swap=128M <container> fails with
"Your kernel does not support memory limit capabilities or the cgroup is not
mounted. Limitation discarded."
on linux-raspi 6.17.0-1006-raspi.
The docker command works fine on amd64 and riscv64.
The following mount exists:
cgroup2 on /sys/fs/cgroup type cgroup2
(rw,nosuid,nodev,noexec,relatime,nsdelegate,memory_recursiveprot)
ProblemType: Bug
DistroRelease: Ubuntu 25.10
Package: linux-image-6.17.0-1006-raspi 6.17.0-1006.6
ProcVersionSignature: Ubuntu 6.17.0-1006.6-raspi 6.17.2
Uname: Linux 6.17.0-1006-raspi aarch64
AlsaVersion: Advanced Linux Sound Architecture Driver Version
k6.17.0-1006-raspi.
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay'
ApportVersion: 2.33.1-0ubuntu3
Architecture: arm64
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord'
AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/controlC1',
'/dev/snd/pcmC1D0p', '/dev/snd/by-path', '/dev/snd/controlC0',
'/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
CRDA: N/A
Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
Card1.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer'
Card1.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer'
CasperMD5CheckResult: unknown
CloudArchitecture: aarch64
CloudID: nocloud
CloudName: unknown
CloudPlatform: nocloud
CloudSubPlatform: config-disk (/dev/nvme0n1p1)
Date: Sat Dec 27 02:56:56 2025
ImageMediaBuild: 20250415
Lspci-vt:
-[0001:00]---00.0-[01]----00.0 Samsung Electronics Co Ltd NVMe SSD Controller
PM9B1 (DRAM-less)
-[0002:00]---00.0-[01]----00.0 Raspberry Pi Ltd RP1 PCIe 2.0 South Bridge
Lsusb:
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 004 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 005 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Lsusb-t:
/: Bus 001.Port 001: Dev 001, Class=root_hub, Driver=dwc2/1p, 480M
/: Bus 002.Port 001: Dev 001, Class=root_hub, Driver=xhci-hcd/2p, 480M
/: Bus 003.Port 001: Dev 001, Class=root_hub, Driver=xhci-hcd/1p, 5000M
/: Bus 004.Port 001: Dev 001, Class=root_hub, Driver=xhci-hcd/2p, 480M
/: Bus 005.Port 001: Dev 001, Class=root_hub, Driver=xhci-hcd/1p, 5000M
PciMultimedia:
ProcFB:
ProcKernelCmdLine: reboot=w coherent_pool=1M 8250.nr_uarts=1 pci=pcie_bus_safe
cgroup_disable=memory numa_policy=interleave nvme.max_host_mem_size_mb=0
numa=fake=8 system_heap.max_order=0 smsc95xx.macaddr=2C:CF:67:FC:F8:DB
vc_mem.mem_base=0x3fc00000 vc_mem.mem_size=0x40000000 console=ttyAMA0,115200
multipath=off dwc_otg.lpm_enable=0 console=tty1 root=LABEL=writable
rootfstype=ext4 rootwait fixrtc
RelatedPackageVersions:
firmware-sof N/A
linux-firmware 20250901.git993ff19b-0ubuntu1.4
RfKill: Error: [Errno 2] No such file or directory: 'rfkill'
SourcePackage: linux-raspi
UpgradeStatus: Upgraded to questing on 2025-12-19 (8 days ago)
acpidump:
** Affects: linux-raspi (Ubuntu)
Importance: Undecided
Status: New
** Tags: apport-bug arm64 arm64-image questing raspi-image
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https://bugs.launchpad.net/bugs/2137159
Title:
linux-raspi: kernel does not support memory limit capabilities
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