apport information ** Tags added: apport-collected
** Description changed: I have OpenStack environment with OVS with GRE tunnels between Compute nodes. All nodes OpenStack nodes have: Description: Ubuntu 14.04.2 LTS Release: 14.04 After upgrading kernel from 3.13.0-45 to 3.13.0-46 on one Compute node OpenStack networking on this node no longer works. It also does not work on any newer version up to 3.13.0-65. Everything looks OK, bridges and ports are configured in OVS, but there is no communication - VMs can't receive network configuration from DHCP agent running on another server. The same is with 3.16 kernel: Last working version is 3.16.0-30. With version 3.16.0-31and newer up to 3.16.0-50 network communication does not work. I analyzed changes included in 3.13.0-46 and 3.16.0-31 and both have the same change regarding GRE: * gre: fix the inner mac header in nbma tunnel xmit path Maybe this is the reason? + --- + AlsaDevices: + total 0 + crw-rw---- 1 root audio 116, 1 Oct 8 15:38 seq + crw-rw---- 1 root audio 116, 33 Oct 8 15:38 timer + AplayDevices: Error: [Errno 2] No such file or directory + ApportVersion: 2.14.1-0ubuntu3.7 + Architecture: amd64 + ArecordDevices: Error: [Errno 2] No such file or directory + AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: + CRDA: Error: [Errno 2] No such file or directory + DistroRelease: Ubuntu 14.04 + HibernationDevice: RESUME=/dev/mapper/stack--nova03--vg-swap_1 + InstallationDate: Installed on 2015-06-25 (105 days ago) + InstallationMedia: Ubuntu-Server 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) + MachineType: Dell Inc. PowerEdge R710 + Package: linux (not installed) + PciMultimedia: + + ProcEnviron: + LANGUAGE=en_US.UTF-8 + TERM=xterm + PATH=(custom, no user) + XDG_RUNTIME_DIR=<set> + SHELL=/bin/bash + ProcFB: 0 VESA VGA + ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-30-generic root=/dev/mapper/stack--nova03--vg-root ro + ProcVersionSignature: Ubuntu 3.16.0-30.40~14.04.1-generic 3.16.7-ckt3 + RelatedPackageVersions: + linux-restricted-modules-3.16.0-30-generic N/A + linux-backports-modules-3.16.0-30-generic N/A + linux-firmware 1.127.11 + RfKill: Error: [Errno 2] No such file or directory + Tags: trusty + Uname: Linux 3.16.0-30-generic x86_64 + UpgradeStatus: No upgrade log present (probably fresh install) + UserGroups: + + _MarkForUpload: True + dmi.bios.date: 07/23/2013 + dmi.bios.vendor: Dell Inc. + dmi.bios.version: 6.4.0 + dmi.board.name: 0N047H + dmi.board.vendor: Dell Inc. + dmi.board.version: A03 + dmi.chassis.type: 23 + dmi.chassis.vendor: Dell Inc. + dmi.modalias: dmi:bvnDellInc.:bvr6.4.0:bd07/23/2013:svnDellInc.:pnPowerEdgeR710:pvr:rvnDellInc.:rn0N047H:rvrA03:cvnDellInc.:ct23:cvr: + dmi.product.name: PowerEdge R710 + dmi.sys.vendor: Dell Inc. ** Attachment added: "BootDmesg.txt" https://bugs.launchpad.net/bugs/1504154/+attachment/4488712/+files/BootDmesg.txt -- 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/1504154 Title: OVS with GRE tunnels no longer works Status in linux package in Ubuntu: Confirmed Bug description: I have OpenStack environment with OVS with GRE tunnels between Compute nodes. All nodes OpenStack nodes have: Description: Ubuntu 14.04.2 LTS Release: 14.04 After upgrading kernel from 3.13.0-45 to 3.13.0-46 on one Compute node OpenStack networking on this node no longer works. It also does not work on any newer version up to 3.13.0-65. Everything looks OK, bridges and ports are configured in OVS, but there is no communication - VMs can't receive network configuration from DHCP agent running on another server. The same is with 3.16 kernel: Last working version is 3.16.0-30. With version 3.16.0-31and newer up to 3.16.0-50 network communication does not work. I analyzed changes included in 3.13.0-46 and 3.16.0-31 and both have the same change regarding GRE: * gre: fix the inner mac header in nbma tunnel xmit path Maybe this is the reason? --- AlsaDevices: total 0 crw-rw---- 1 root audio 116, 1 Oct 8 15:38 seq crw-rw---- 1 root audio 116, 33 Oct 8 15:38 timer AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.14.1-0ubuntu3.7 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: [Errno 2] No such file or directory DistroRelease: Ubuntu 14.04 HibernationDevice: RESUME=/dev/mapper/stack--nova03--vg-swap_1 InstallationDate: Installed on 2015-06-25 (105 days ago) InstallationMedia: Ubuntu-Server 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1) MachineType: Dell Inc. PowerEdge R710 Package: linux (not installed) PciMultimedia: ProcEnviron: LANGUAGE=en_US.UTF-8 TERM=xterm PATH=(custom, no user) XDG_RUNTIME_DIR=<set> SHELL=/bin/bash ProcFB: 0 VESA VGA ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.16.0-30-generic root=/dev/mapper/stack--nova03--vg-root ro ProcVersionSignature: Ubuntu 3.16.0-30.40~14.04.1-generic 3.16.7-ckt3 RelatedPackageVersions: linux-restricted-modules-3.16.0-30-generic N/A linux-backports-modules-3.16.0-30-generic N/A linux-firmware 1.127.11 RfKill: Error: [Errno 2] No such file or directory Tags: trusty Uname: Linux 3.16.0-30-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: _MarkForUpload: True dmi.bios.date: 07/23/2013 dmi.bios.vendor: Dell Inc. dmi.bios.version: 6.4.0 dmi.board.name: 0N047H dmi.board.vendor: Dell Inc. dmi.board.version: A03 dmi.chassis.type: 23 dmi.chassis.vendor: Dell Inc. dmi.modalias: dmi:bvnDellInc.:bvr6.4.0:bd07/23/2013:svnDellInc.:pnPowerEdgeR710:pvr:rvnDellInc.:rn0N047H:rvrA03:cvnDellInc.:ct23:cvr: dmi.product.name: PowerEdge R710 dmi.sys.vendor: Dell Inc. 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