Public bug reported: Running the certification memory test using stress-ng on an ARM64 system with 64GB roughly of RAM (MAAS shows 63GB).
The test runs several stress-ng memory related tests. It appears that the system locks up when the bigheap test runs, every time so far (two of two runs have failed). I'm doing a third now to confirm that bigheap is where the lockup occurs. I've also run this exact same test on similar and smaller memory amounts on s390x and amd64 without problem. This is also being done to provide data for a similar bug discovered on Power (ppc64le). To test this on an arm64 system: Install Xenial $ add-apt-repository ppa:hardware-certification/public $ apt update $ apt install canonical-certification-server $ /usr/lib/plainbox-provider-checkbox/bin/memory_stress_ng the memory_stress_ng script is a wrapper for stress_ng that only calls certain memory tests. See script for an idea of how it's executing the tests. This could be the same issue that we're seeing on power, or it could be a different issue for ARM that looks similar. Here's the original Power bug: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1573062 ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-31-generic 4.4.0-31.50 ProcVersionSignature: User Name 4.4.0-31.50-generic 4.4.13 Uname: Linux 4.4.0-31-generic aarch64 AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Aug 5 09:27 seq crw-rw---- 1 root audio 116, 33 Aug 5 09:27 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.20.1-0ubuntu2.1 Architecture: arm64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: N/A Date: Fri Aug 5 16:15:51 2016 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' Lsusb: Error: command ['lsusb'] failed with exit code 1: PciMultimedia: ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: ProcKernelCmdLine: console=ttyS0,9600n8r ro RelatedPackageVersions: linux-restricted-modules-4.4.0-31-generic N/A linux-backports-modules-4.4.0-31-generic N/A linux-firmware 1.157.2 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) ** Affects: linux (Ubuntu) Importance: Undecided Status: Confirmed ** Tags: apport-bug arm64 blocks-hwcert-server uec-images xenial -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1610320 Title: stress-ng memory testing causes Arm64 system to hang To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1610320/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
