apport information ** Tags added: apport-collected
** Description changed: 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) + --- + 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 + ApportVersion: 2.20.7-0ubuntu3.1 + Architecture: s390x + ArecordDevices: Error: [Errno 2] No such file or directory + CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found. + DistroRelease: Ubuntu 17.10 + HibernationDevice: RESUME=UUID=1ce0f037-449a-43a1-af49-e730f6f99ac4 + IwConfig: Error: [Errno 2] No such file or directory + Lspci: + + Lsusb: Error: command ['lsusb'] failed with exit code 1: + Package: linux (not installed) + 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 + ProcVersionSignature: Ubuntu 4.13.0-16.19-generic 4.13.4 + 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 + Tags: artful + Uname: Linux 4.13.0-16-generic s390x + UpgradeStatus: Upgraded to artful on 2017-11-02 (0 days ago) + UserGroups: adm cdrom cpacfstats dip lpadmin lxd plugdev sambashare sudo + _MarkForUpload: True ** Attachment added: "AudioDevicesInUse.txt" https://bugs.launchpad.net/bugs/1729878/+attachment/5003078/+files/AudioDevicesInUse.txt -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1729878 Title: stress-ng triggering call-traces on s390x z/VM instances To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1729878/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs