Markng this invalid. SOMETHING resolved it, but we never figured out
what.
** Changed in: linux (Ubuntu)
Status: Confirmed => Invalid
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https://bugs.launchpad.net/bugs/1610320
Title:
stress-ng memory testing causes Arm64 system to hang
Status in linux package in Ubuntu:
Invalid
Bug description:
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)
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