Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v4.1 kernel[0].
If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream'. Once testing of the upstream kernel is complete, please mark this bug as "Confirmed". Thanks in advance. [0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.1-rc5-unstable/ ** Tags added: performing-bisect ** Also affects: linux (Ubuntu Utopic) Importance: Undecided Status: New ** Also affects: linux (Ubuntu Vivid) Importance: Undecided Status: New ** Changed in: linux (Ubuntu Utopic) Status: New => Confirmed ** Changed in: linux (Ubuntu Vivid) Status: New => Confirmed ** Changed in: linux (Ubuntu Utopic) Importance: Undecided => High ** Changed in: linux (Ubuntu Vivid) Importance: Undecided => High ** Also affects: kexec-tools (Ubuntu) Importance: Undecided Status: New -- 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/1400319 Title: [Hyper-V] Kernel panic not functional on 32bit Ubuntu 14.10 and 15.04 Status in kexec-tools package in Ubuntu: New Status in linux package in Ubuntu: Confirmed Status in kexec-tools source package in Utopic: New Status in linux source package in Utopic: Confirmed Status in kexec-tools source package in Vivid: New Status in linux source package in Vivid: Confirmed Bug description: While testing the final build of 14.10 32bit we found that kernel panic cannot be activated for an installation on a Hyper-V VM. Repro rate: 100% Repro details: Hyper-V: Server 2012 R2 VM: Ubuntu 14.10 32bit Kdump is enabled in the config file at /etc/default/kdump-tools Different crashkernel values used in grub.cfg – 128M-:64M | 256M-:128m | 384M-:256M VM settings: 2 cores, various RAM sizes attempted: 1, 2 or 4 GB – this in combination with the values for crashkernel. Trying to start the kdump service: root@ubuntu1410i386:~# /etc/init.d/kdump-tools start Starting kdump-tools: Could not find a free area of memory of 0x9f000 bytes... locate_hole failed * failed to load kdump kernel --- root@ubuntu1410i386:~# cat /sys/kernel/kexec_crash_loaded 0 If the conversion from hex to dec is right, the mentioned memory mapping of 0x9f000 bytes is equal to 651264 (bytes), so under 1MB. This is not then related to the RAM allocation nor the crashkernel value used. --- 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: 2.14.7-0ubuntu8 Architecture: i386 ArecordDevices: Error: [Errno 2] No such file or directory CRDA: Error: [Errno 2] No such file or directory DistroRelease: Ubuntu 14.10 HibernationDevice: RESUME=UUID=5a5d0aa4-b8ee-4bf7-b1b9-761b7d1550b6 InstallationDate: Installed on 2014-10-31 (37 days ago) InstallationMedia: Ubuntu-Server 14.10 "Utopic Unicorn" - Release i386 (20141022.2) IwConfig: lo no wireless extensions. eth0 no wireless extensions. Lsusb: Error: command ['lsusb'] failed with exit code 1: unable to initialize libusb: -99 MachineType: Microsoft Corporation Virtual Machine Package: linux (not installed) PciMultimedia: ProcEnviron: TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 hyperv_fb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-24-generic root=UUID=83fb481a-8898-4adc-bf31-4e160f5f0ce8 ro crashkernel=128M-:64M ProcVersionSignature: Ubuntu 3.16.0-24.32-generic 3.16.4 RelatedPackageVersions: linux-restricted-modules-3.16.0-24-generic N/A linux-backports-modules-3.16.0-24-generic N/A linux-firmware 1.138 RfKill: Error: [Errno 2] No such file or directory Tags: utopic Uname: Linux 3.16.0-24-generic i686 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: WifiSyslog: Dec 8 08:16:46 ubuntu1410i386 dhclient: DHCPREQUEST of 10.226.59.102 on eth0 to 10.184.232.100 port 67 (xid=0x4b67ffa3) Dec 8 08:16:46 ubuntu1410i386 dhclient: DHCPACK of 10.226.59.102 from 10.184.232.100 Dec 8 08:16:47 ubuntu1410i386 dhclient: bound to 10.226.59.102 -- renewal in 13914 seconds. Dec 8 10:10:47 ubuntu1410i386 kernel: [1840786.031060] init: tty1 main process ended, respawning _MarkForUpload: True dmi.bios.date: 05/23/2012 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 090006 dmi.board.name: Virtual Machine dmi.board.vendor: Microsoft Corporation dmi.board.version: 7.0 dmi.chassis.asset.tag: 7176-0455-3377-8479-3268-6677-66 dmi.chassis.type: 3 dmi.chassis.vendor: Microsoft Corporation dmi.chassis.version: 7.0 dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr090006:bd05/23/2012:svnMicrosoftCorporation:pnVirtualMachine:pvr7.0:rvnMicrosoftCorporation:rnVirtualMachine:rvr7.0:cvnMicrosoftCorporation:ct3:cvr7.0: dmi.product.name: Virtual Machine dmi.product.version: 7.0 dmi.sys.vendor: Microsoft Corporation To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/kexec-tools/+bug/1400319/+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
