** Description changed: + [ Impact ] + 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) + + + [ Fix ] + + Don't disable the memory cgroup by default. + + [ Test Case ] + + 1. Verify the above works. + 2. Quick check: Verify /sys/fs/cgroup/memory.stat exists. + + [ Where Problems Could Occur ] + + Additional kernel code that runs at boot and when using the memory + cgroup. Could cause the usual kernel issues: Crashes, hangs, freezes, + splats, ... + + [ Additional Information ] 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 + -[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 + 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 + /: 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 + 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:
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/2137159 Title: linux-raspi: kernel does not support memory limit capabilities To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/2137159/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
