** Branch linked: lp:ubuntu/precise-proposed/linux-lts-trusty -- 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/1375266
Title: amd-iommu: kernel BUG & lockup after shutting down KVM guest using PCI passthrough/PCIe bridge Status in The Linux Kernel: Unknown Status in “linux” package in Ubuntu: Fix Released Status in “linux” source package in Trusty: Fix Committed Bug description: SRU Justification: [Impact] When using a KVM VM and adding certain combinations of PCI/PCI-e devices an oops and freeze can occur when shutting down a VM. [Fix] Commit 9b29d3c6510407d91786c1cf9183ff4debb3473a which is upstream in 3.17-rc2 and in stable/3.16.y. This fix changes how cleanup_domain detaches device, instead of using the list_for_each_entyr_safe macro, it just iterates through the devices and removes the first element. [Test Case] Create KVM VM with a specific configuration of PCI/PCIe devices, and shutdown the VM. See https://bugzilla.kernel.org/show_bug.cgi?id=81841 for details. -- This kernel lockup bug was reported to and fixed upstream: https://bugzilla.kernel.org/show_bug.cgi?id=81841 Please backport the "stable" kernel patch to Ubuntu kernels (at least trusty, which I use in this setup): https://git.kernel.org/cgit/linux/kernel/git/stable/linux-stable.git/commit/?id=9b29d3c6510407d91786c1cf9183ff4debb3473a ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-3.13.0-35-generic 3.13.0-35.62 ProcVersionSignature: Ubuntu 3.13.0-35.62-generic 3.13.11.6 Uname: Linux 3.13.0-35-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.13.0-35-generic. AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.14.1-0ubuntu3.4 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC1', '/dev/snd/hwC1D0', '/dev/snd/pcmC1D0c', '/dev/snd/pcmC1D0p', '/dev/snd/pcmC1D1p', '/dev/snd/pcmC1D2c', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D3p', '/dev/snd/pcmC0D7p', '/dev/snd/pcmC0D8p', '/dev/snd/pcmC0D9p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: [Errno 2] No such file or directory: 'iw' Card0.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer' Card0.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer' Card1.Amixer.info: Error: [Errno 2] No such file or directory: 'amixer' Card1.Amixer.values: Error: [Errno 2] No such file or directory: 'amixer' Date: Mon Sep 29 16:19:50 2014 HibernationDevice: RESUME=UUID=54378db4-8de4-45f0-b7cb-2d8e1097139d InstallationDate: Installed on 2014-09-04 (25 days ago) InstallationMedia: Ubuntu-Server 14.04 LTS "Trusty Tahr" - Release amd64 (20140416.2) MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M. ProcEnviron: LANGUAGE=en_US:en TERM=xterm PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/usr/bin/zsh ProcFB: 0 radeondrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-35-generic root=UUID=a8f2d0ae-f43e-47de-9ef9-99fed8c9c78e ro nomdmonddf nomdmonisw nomdmonddf nomdmonisw RelatedPackageVersions: linux-restricted-modules-3.13.0-35-generic N/A linux-backports-modules-3.13.0-35-generic N/A linux-firmware 1.127.7 RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) WifiSyslog: dmi.bios.date: 01/24/2014 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: P2.90 dmi.board.name: FM2A88X Extreme6+ dmi.board.vendor: ASRock dmi.chassis.asset.tag: To Be Filled By O.E.M. dmi.chassis.type: 3 dmi.chassis.vendor: To Be Filled By O.E.M. dmi.chassis.version: To Be Filled By O.E.M. dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP2.90:bd01/24/2014:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnFM2A88XExtreme6+:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.: dmi.product.name: To Be Filled By O.E.M. dmi.product.version: To Be Filled By O.E.M. dmi.sys.vendor: To Be Filled By O.E.M. To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/1375266/+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
