Great, thanks for testing and finding the version! I'll review the commit logs for rc6 and see if anything sticks out as the fix. If not. we can reverse bisect between rc5 and rc6 to identify the fix.
-- 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/1634892 Title: Setting net.ipv4.neigh.default.gc_thresh1/2/3 on 3.13.0-97.144 or later causes 'invalid argument' error Status in linux package in Ubuntu: In Progress Status in linux-lts-trusty package in Ubuntu: In Progress Status in linux source package in Trusty: In Progress Bug description: Setting net.ipv4.neigh.default.gc_thresh1/2/3 on the 3.13.0-96-generic kernel and below worked fine using the following: $ sudo /sbin/sysctl -w net.ipv4.neigh.default.gc_thresh1=128 128 As of 3.13.0-97-generic, though, it no longer works as expected: $ sudo /sbin/sysctl -w net.ipv4.neigh.default.gc_thresh1=128 error: "Invalid argument" setting key "net.ipv4.neigh.default.gc_thresh1" There are two potentially related revisions in the -97 release - http://kernel.ubuntu.com/git/ubuntu/ubuntu-precise.git/commit/?h=lts- backport-trusty&id=563cf19389d8e999e69d6c94995966aeaf7c3a08 and http://kernel.ubuntu.com/git/ubuntu/ubuntu-precise.git/commit/?h=lts- backport-trusty&id=7b82096b0ebc9bf487b390fe970d66ffa5a5774e. The expected behavior is that changing neighbor table settings works using 'sysctl -w' with the same values as before the -97 kernel. ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.13.0-98-generic 3.13.0-98.145~precise1 ProcVersionSignature: Ubuntu 3.13.0-98.145~precise1-generic 3.13.11-ckt39 Uname: Linux 3.13.0-98-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.13.0-98-generic. AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.0.1-0ubuntu17.13 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/pcmC0D1p', '/dev/snd/midiC0D0', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Error: [Errno 2] No such file or directory Card0.Amixer.values: Error: [Errno 2] No such file or directory CurrentDmesg: [ 4.586115] NET: Registered protocol family 40 Date: Wed Oct 19 06:13:36 2016 HibernationDevice: RESUME=UUID=d32abfeb-623f-4c11-ae4a-a7babe8c2139 InstallationMedia: Ubuntu-Server 12.04.5 LTS "Precise Pangolin" - Release amd64 (20140806.1) IwConfig: Error: [Errno 2] No such file or directory MachineType: VMware, Inc. VMware Virtual Platform MarkForUpload: True ProcEnviron: LANGUAGE=en_US: TERM=screen-256color PATH=(custom, no user) LANG=en_US.UTF-8 SHELL=/bin/bash ProcFB: 0 svgadrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.13.0-98-generic root=UUID=febea164-78c3-4d3a-a0ce-0f09990df608 ro find_preseed=/preseed.cfg noprompt quiet RelatedPackageVersions: linux-restricted-modules-3.13.0-98-generic N/A linux-backports-modules-3.13.0-98-generic N/A linux-firmware 1.79.16 RfKill: Error: [Errno 2] No such file or directory SourcePackage: linux-lts-trusty UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 07/02/2015 dmi.bios.vendor: Phoenix Technologies LTD dmi.bios.version: 6.00 dmi.board.name: 440BX Desktop Reference Platform dmi.board.vendor: Intel Corporation dmi.board.version: None dmi.chassis.asset.tag: No Asset Tag dmi.chassis.type: 1 dmi.chassis.vendor: No Enclosure dmi.chassis.version: N/A dmi.modalias: dmi:bvnPhoenixTechnologiesLTD:bvr6.00:bd07/02/2015:svnVMware,Inc.:pnVMwareVirtualPlatform:pvrNone:rvnIntelCorporation:rn440BXDesktopReferencePlatform:rvrNone:cvnNoEnclosure:ct1:cvrN/A: dmi.product.name: VMware Virtual Platform dmi.product.version: None dmi.sys.vendor: VMware, Inc. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1634892/+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
