I also experienced this issue within 4 hours of a host upgrade to kernel 3.8.0-27 yesterday, and migrating ~16 guests in.
There were two observed guest types which lost networking: Ubuntu 12.10 Quantal, and Ubuntu 10.04 Lucid LTS. Rebooting guest was the only way to re-establish bridged network connection to the guests. brctl outputs, ifconfig, and virsh commands all looked proper, and matched working Guests. No errors in host or guest syslogs, or consoles. On the final frozen guest, this morning, we attempted to migrate a network-down guest OS to an IDENTICAL hardware+3.8.0-27 kernel host in hopes of magically regaining networking; and the source host kernel- panicked and froze! Sadly the console display size was too small to see the source of Panic, nor was detail logged to the syslog. We did see a lot of net-tx/rx detail in the stack listing. We hard-booted this panicked host into previous, 3.8.0-26 kernel, 4 hours uptime and no guest connectivity loss (yet?). -- 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/1208532 Title: put_page failures with 3.8.0-27.40 Status in “linux” package in Ubuntu: In Progress Bug description: Since update to 3.8.0-27.40 kernel I have been seeing these errors on an almost daily basis. I run two Windows Server 2012 instances under KVM. One or both of the Windows instances will disconnect from the network when this error happens and will not reconnect until I reboot Windows. Linux seems to recover silently on its own. Running on an HP Z600 Workstation with ECC RAM (memory issue is very unlikely). Scanned the boot/swap HDD for errors with Seagate SeaTools, no issues found. ProblemType: Bug DistroRelease: Ubuntu 13.04 Package: linux-image-3.8.0-27-generic 3.8.0-27.40 ProcVersionSignature: Ubuntu 3.8.0-27.40-generic 3.8.13.4 Uname: Linux 3.8.0-27-generic x86_64 NonfreeKernelModules: nvidia ApportVersion: 2.9.2-0ubuntu8.1 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: greg 3352 F.... pulseaudio CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found. Date: Mon Aug 5 09:44:31 2013 HibernationDevice: RESUME=UUID=94c635e6-8245-4fe1-8c93-432c8d10dbd1 InstallationDate: Installed on 2012-02-14 (538 days ago) InstallationMedia: Ubuntu-Server 11.10 "Oneiric Ocelot" - Release amd64 (20111011) MachineType: Hewlett-Packard HP Z600 Workstation MarkForUpload: True ProcFB: ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.8.0-27-generic root=/dev/mapper/mizuno-root ro RelatedPackageVersions: linux-restricted-modules-3.8.0-27-generic N/A linux-backports-modules-3.8.0-27-generic N/A linux-firmware 1.106 RfKill: SourcePackage: linux UpgradeStatus: Upgraded to raring on 2013-04-25 (101 days ago) dmi.bios.date: 11/02/2011 dmi.bios.vendor: Hewlett-Packard dmi.bios.version: 786G4 v03.54 dmi.board.asset.tag: 2UA00605JK dmi.board.name: 0AE8h dmi.board.vendor: Hewlett-Packard dmi.board.version: C dmi.chassis.asset.tag: 2UA00605JK dmi.chassis.type: 6 dmi.chassis.vendor: Hewlett-Packard dmi.modalias: dmi:bvnHewlett-Packard:bvr786G4v03.54:bd11/02/2011:svnHewlett-Packard:pnHPZ600Workstation:pvr:rvnHewlett-Packard:rn0AE8h:rvrC:cvnHewlett-Packard:ct6:cvr: dmi.product.name: HP Z600 Workstation dmi.sys.vendor: Hewlett-Packard To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1208532/+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
