This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1774571 and then change the status of the bug to 'Confirmed'. If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'. This change has been made by an automated script, maintained by the Ubuntu Kernel Team. ** Changed in: linux (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1774571 Title: sigq test from stress-ng will get stuck with Artful kernel Status in linux package in Ubuntu: Incomplete Bug description: This issue can be spotted on s390x, ARM64 and AMD64 Artful kernel. 10:02:39 DEBUG| [stdout] sigpending STARTING 10:02:44 DEBUG| [stdout] sigpending RETURNED 0 10:02:44 DEBUG| [stdout] sigpending PASSED 10:02:44 DEBUG| [stdout] sigpipe STARTING 10:02:49 DEBUG| [stdout] sigpipe RETURNED 0 10:02:49 DEBUG| [stdout] sigpipe PASSED 10:02:49 DEBUG| [stdout] sigq STARTING ... This is the last entry related to stress-ng in syslog of a s390x node: May 31 10:46:39 s2lp6g004 stress-ng: system: 's2lp6g004' Linux 4.13.0-45-generic #50-Ubuntu SMP Wed May 30 08:21:19 UTC 2018 s390x May 31 10:46:39 s2lp6g004 stress-ng: memory (MB): total 1805.91, free 1409.97, shared 6.06, buffer 134.56, swap 2001.63, free swap 1890.19 May 31 10:46:39 s2lp6g004 stress-ng: info: [20125] dispatching hogs: 4 sigq No more stress-ng related message after this. ubuntu@s2lp6g004:/tmp$ cat stress-9234.log stress-ng: debug: [20125] 2 processors online, 2 processors configured stress-ng: info: [20125] dispatching hogs: 4 sigq stress-ng: debug: [20125] cache allocate: reducing cache level from L3 (too high) to L2 stress-ng: debug: [20125] cache allocate: default cache size: 2048K stress-ng: debug: [20125] starting stressors stress-ng: debug: [20126] stress-ng-sigq: started [20126] (instance 0) stress-ng: debug: [20125] 4 stressors spawned stress-ng: debug: [20129] stress-ng-sigq: started [20129] (instance 3) stress-ng: debug: [20128] stress-ng-sigq: started [20128] (instance 2) stress-ng: debug: [20127] stress-ng-sigq: started [20127] (instance 1) stress-ng: debug: [20126] stress-ng-sigq: parent sent termination notice stress-ng: debug: [20130] stress-ng-sigq: child got termination notice ubuntu@s2lp6g004:/tmp$ ps aux | grep stress-ng root 5948 0.0 0.0 11456 712 ? S May31 0:00 ./stress-ng -v -t 5 --enosys 4 --ignite-cpu --syslog --verbose --verify --oomable root 7654 0.0 0.0 11456 712 ? S May31 0:00 ./stress-ng -v -t 5 --enosys 4 --ignite-cpu --syslog --verbose --verify --oomable root 7728 0.0 0.0 11456 712 ? S May31 0:00 ./stress-ng -v -t 5 --enosys 4 --ignite-cpu --syslog --verbose --verify --oomable root 7740 0.0 0.0 11456 712 ? S May31 0:00 ./stress-ng -v -t 5 --enosys 4 --ignite-cpu --syslog --verbose --verify --oomable root 20125 0.0 0.2 13612 5008 ? SL May31 0:00 ./stress-ng -v -t 5 --sigq 4 --ignite-cpu --syslog --verbose --verify --oomable root 20126 1.0 0.1 13612 1852 ? S May31 12:03 ./stress-ng -v -t 5 --sigq 4 --ignite-cpu --syslog --verbose --verify --oomable root 20127 1.0 0.1 13612 1852 ? S May31 12:11 ./stress-ng -v -t 5 --sigq 4 --ignite-cpu --syslog --verbose --verify --oomable root 20128 1.0 0.1 13612 1852 ? S May31 12:04 ./stress-ng -v -t 5 --sigq 4 --ignite-cpu --syslog --verbose --verify --oomable root 20129 1.0 0.1 13612 1852 ? S May31 12:06 ./stress-ng -v -t 5 --sigq 4 --ignite-cpu --syslog --verbose --verify --oomable root 20131 0.0 0.0 13612 312 ? S May31 0:00 ./stress-ng -v -t 5 --sigq 4 --ignite-cpu --syslog --verbose --verify --oomable root 20132 0.0 0.0 13612 312 ? S May31 0:00 ./stress-ng -v -t 5 --sigq 4 --ignite-cpu --syslog --verbose --verify --oomable root 20133 0.0 0.0 13612 312 ? S May31 0:00 ./stress-ng -v -t 5 --sigq 4 --ignite-cpu --syslog --verbose --verify --oomable ProblemType: Bug DistroRelease: Ubuntu 17.10 Package: linux-image-4.13.0-45-generic 4.13.0-45.50 ProcVersionSignature: Ubuntu 4.13.0-45.50-generic 4.13.16 Uname: Linux 4.13.0-45-generic s390x NonfreeKernelModules: zfs zunicode zavl zcommon znvpair 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: 2.20.7-0ubuntu3.9 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. CurrentDmesg: Date: Fri Jun 1 05:29:54 2018 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig' Lspci: Lsusb: Error: command ['lsusb'] failed with exit code 1: PciMultimedia: ProcEnviron: TERM=xterm-256color 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=UUID=d86dc8de-6ac8-4e4b-aba8-92872a209a8c crashkernel=196M RelatedPackageVersions: linux-restricted-modules-4.13.0-45-generic N/A linux-backports-modules-4.13.0-45-generic N/A linux-firmware 1.169.4 RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1774571/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp