I'm also not sure why we're hitting the OOM killer either, the memory
config is light, but not light enough that we'd trigger this sort of
thing on other systems, perhaps its s390x specific:
ubuntu@hwe0008:~$ free -m
total used free shared buff/cache available
Mem: 3807 172 3280 1 354 3584
Swap: 5707 54 5652
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https://bugs.launchpad.net/bugs/1729878
Title:
stress-ng triggering call-traces on s390x z/VM instances
Status in linux package in Ubuntu:
Incomplete
Bug description:
During regression testing on a z/VM instance, I noticed call traces
being dumped to dmesg that seem to be related to stress-ng.
The stress-ng invocation we're using is:
stress-ng --aggressive --verify --timeout $runtime \
--metrics-brief --tz --times \
--af-alg 0 --bsearch 0 --context 0 --cpu 0 \
--crypt 0 --hsearch 0 --longjmp 0 --lsearch
0 \
--matrix 0 --qsort 0 --str 0 --stream 0 \
--tsearch 0 --vecmath 0 --wcs 0
as executed by the cpu_stress script from the cpu/cpu_stress_ng test
in the certification suite.
ProblemType: Bug
DistroRelease: Ubuntu 17.10
Package: linux-image-4.13.0-16-generic 4.13.0-16.19
ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4
Uname: Linux 4.13.0-16-generic s390x
AlsaDevices: Error: command ['ls', '-l', '/dev/snd/'] failed with exit code
2: ls: cannot access '/dev/snd/': No such file or directory
AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
ApportVersion: 2.20.7-0ubuntu3.1
Architecture: s390x
ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord':
'arecord'
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211
not found.
Date: Fri Nov 3 11:12:04 2017
HibernationDevice: RESUME=UUID=1ce0f037-449a-43a1-af49-e730f6f99ac4
IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
Lspci:
Lsusb: Error: command ['lsusb'] failed with exit code 1:
PciMultimedia:
ProcEnviron:
TERM=screen
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=C
SHELL=/bin/bash
ProcFB: Error: [Errno 2] No such file or directory: '/proc/fb'
ProcKernelCmdLine: root=/dev/mapper/hwe0008_vg-lv crashkernel=196M
BOOT_IMAGE=0
RelatedPackageVersions:
linux-restricted-modules-4.13.0-16-generic N/A
linux-backports-modules-4.13.0-16-generic N/A
linux-firmware 1.169
RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill'
SourcePackage: linux
UpgradeStatus: Upgraded to artful on 2017-11-02 (0 days ago)
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