I can test earlier mainlines, but keep in mind that ppc64el is very slow on my home qemu setup (note "only" "very slow"; ppc64 is "amazingly slow", presumably due to endian swapping). Does Kernel have a POWER8 playground machine, if it comes to bisect compiling?
-- 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/1761626 Title: [regression] bionic 4.15.0-13-generic panics on qemu ppc64el Status in linux package in Ubuntu: Triaged Status in linux source package in Artful: Triaged Status in linux source package in Bionic: Triaged Bug description: When upgrading to bionic on a qemu ppc64el instance, the 4.15.0 kernel panics before initrd. Going back to xenial 4.4.0 works correctly. linux-image-4.15.0-13-generic: Installed: 4.15.0-13.14 Candidate: 4.15.0-13.14 Version table: *** 4.15.0-13.14 500 500 http://nibbler.snowman.lan/deb-proxy/ubuntu-ports bionic/main ppc64el Packages 100 /var/lib/dpkg/status ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-13-generic 4.15.0-13.14 ProcVersionSignature: Ubuntu 4.4.0-119.143-generic 4.4.114 Uname: Linux 4.4.0-119-generic ppc64le .var.log.platform: Error: [Errno 13] Permission denied: '/var/log/platform' AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Apr 5 16:11 seq crw-rw---- 1 root audio 116, 33 Apr 5 16:11 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay' ApportVersion: 2.20.9-0ubuntu2 Architecture: ppc64el ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: Date: Thu Apr 5 16:13:28 2018 HibernationDevice: RESUME=UUID=2e904a57-3ce7-4b31-97ed-6c63b81b2221 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig' Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub PciMultimedia: ProcEnviron: TERM=xterm-256color PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinux-4.4.0-119-generic root=UUID=294515c8-75f2-4996-8e4f-a838e6c75804 ro ProcLoadAvg: 3.04 2.18 0.92 3/119 1643 ProcLocks: 1: POSIX ADVISORY WRITE 1225 00:12:470 0 EOF 2: POSIX ADVISORY WRITE 841 00:12:459 0 EOF 3: FLOCK ADVISORY WRITE 832 00:12:449 0 EOF 4: POSIX ADVISORY WRITE 802 00:12:432 0 EOF 5: POSIX ADVISORY WRITE 350 00:12:294 0 EOF ProcSwaps: Filename Type Size Used Priority /dev/vda3 partition 1408960 0 -1 ProcVersion: Linux version 4.4.0-119-generic (buildd@bos02-ppc64el-006) (gcc version 5.4.0 20160609 (Ubuntu/IBM 5.4.0-6ubuntu1~16.04.9) ) #143-Ubuntu SMP Mon Apr 2 16:08:02 UTC 2018 RelatedPackageVersions: linux-restricted-modules-4.4.0-119-generic N/A linux-backports-modules-4.4.0-119-generic N/A linux-firmware 1.173 RfKill: Error: [Errno 2] No such file or directory: 'rfkill': 'rfkill' SourcePackage: linux UpgradeStatus: Upgraded to bionic on 2018-04-05 (0 days ago) cpu_cores: Number of cores present = 1 cpu_coreson: Number of cores online = 1 cpu_smt: Error: command ['ppc64_cpu', '--smt'] failed with exit code 255: Machine is not SMT capable To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1761626/+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
