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 1793464 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/1793464 Title: Kernel panic after the ubuntu_nbd_smoke_test on Xenial kernel Status in linux package in Ubuntu: Incomplete Bug description: This issue can be reproduced on AMD64 KVM //bare-metal node, s390x zKVM node The test itself will pass, but the system will hang after a few second. Steps: 1. Deploy a node with 4.4 Xenial 2. Run the ubuntu_nbd_smoke_test If you have access to the console, you will see that this system actually bumped into a kernel panic: Unable to handle kernel pointer dereference in virtual kernel address space failing address: 000003ff802c1000 TEID: 000003ff802c1803 Fault in home space mode while using kernel ASCE. Log here: https://pastebin.ubuntu.com/p/dNmtvbGjmz/ ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-136-generic 4.4.0-136.162 ProcVersionSignature: Ubuntu 4.4.0-136.162-generic 4.4.144 Uname: Linux 4.4.0-136-generic s390x NonfreeKernelModules: zfs zunicode zcommon znvpair zavl 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' ApportVersion: 2.20.1-0ubuntu2.18 Architecture: s390x ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found. Date: Thu Sep 20 03:46:00 2018 HibernationDevice: RESUME=UUID=ca468a9c-9563-442c-85c6-6055e800a66e IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' Lspci: Lsusb: Error: command ['lsusb'] failed with exit code 1: PciMultimedia: ProcFB: Error: [Errno 2] No such file or directory: '/proc/fb' ProcKernelCmdLine: root=UUID=b65b756a-ba4e-4c53-aa32-0db2bdb50bb3 crashkernel=196M RelatedPackageVersions: linux-restricted-modules-4.4.0-136-generic N/A linux-backports-modules-4.4.0-136-generic N/A linux-firmware 1.157.20 RfKill: Error: [Errno 2] No such file or directory: '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/1793464/+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