Steve, I built a test kernel with commit c297c8b99. It can be downloaded from:
http://kernel.ubuntu.com/~jsalisbury/lp1282302 -- 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/1282302 Title: deadlock when unmounting nfs shares in trusty Status in “linux” package in Ubuntu: Confirmed Bug description: In trusty, I frequently find that unmounting NFS shares (which I do on my laptop before roaming) frequently causes a "soft lockup" in the kernel that leaves me needing to hard reboot the system, because both network access and disk access start failing and the unmount itself never returns. The problem is not reproducible if I unmount the shares immediately after a reboot; I don't know why. It could be related to the fact that some of these NFS shares are bind-mounted into chroots, but the problem is reproducible even when no bind mounts are active. This is a serious regression from previous kernels, which I think should be a priority for resolving in an LTS release. ProblemType: Bug DistroRelease: Ubuntu 14.04 Package: linux-image-generic 3.13.0.8.12 ProcVersionSignature: Ubuntu 3.13.0-8.28-generic 3.13.2 Uname: Linux 3.13.0-8-generic x86_64 ApportVersion: 2.13.2-0ubuntu4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: vorlon 4161 F.... pulseaudio /dev/snd/controlC0: vorlon 4161 F.... pulseaudio /dev/snd/pcmC0D0p: vorlon 4161 F...m pulseaudio CurrentDesktop: Unity Date: Wed Feb 19 14:38:51 2014 HibernationDevice: RESUME=UUID=6df76279-19ea-45a4-bec9-e4fdc858729a InstallationDate: Installed on 2010-09-24 (1244 days ago) InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1) MachineType: LENOVO 2306CTO ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-8-generic root=UUID=362a1cf5-63b7-4122-8457-33ca1d10a8ad ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-3.13.0-8-generic N/A linux-backports-modules-3.13.0-8-generic N/A linux-firmware 1.124 SourcePackage: linux UpgradeStatus: Upgraded to trusty on 2013-10-23 (119 days ago) WifiSyslog: dmi.bios.date: 10/25/2013 dmi.bios.vendor: LENOVO dmi.bios.version: G2ET97WW (2.57 ) dmi.board.asset.tag: Not Available dmi.board.name: 2306CTO dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrG2ET97WW(2.57):bd10/25/2013:svnLENOVO:pn2306CTO:pvrThinkPadX230:rvnLENOVO:rn2306CTO:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 2306CTO dmi.product.version: ThinkPad X230 dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1282302/+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
