SRU request submitted: https://lists.ubuntu.com/archives/kernel-team/2018-May/092740.html
** Description changed: + == SRU Justification == + A regression was introduce in Xenial linux-image-4.4.0-127-generic. It + was found that this regression was introduced by mainline commit + b699d0035836. This commit was applied to Xenial via the 4.4.128 upstream stable + updates. + + Upstream decided to revert this commit in mainline commit f4eb17e1efe5, + which was added in v4.12-rc5. + + == Fix == + f4eb17e1efe5 ("Revert "sit: reload iphdr in ipip6_rcv"") + + == Regression Potential == + Low. This is a revert request to resolve a regression. The revert was + also performed upstream. + + == Test Case == + A test kernel was built with this patch and tested by the original bug reporter. + The bug reporter states the test kernel resolved the bug. + + + Since deploying linux-image-4.4.0-127-generic (4.4.0-127.153) on a Xenial VM with a sit tunnel, I get such messages: May 22 10:49:38 gw kernel: [ 68.121601] sit: non-ECT from 0.0.0.0 with TOS=0x5 Those are logged quite often: # grep -cF 'sit: non-ECT' /var/log/syslog 9108 Reverting to linux-image-4.4.0-124-generic (4.4.0-124.148) fixes the issue. # lsb_release -rd Description: Ubuntu 16.04.4 LTS Release: 16.04 # apt-cache policy linux-image-4.4.0-127-generic linux-image-4.4.0-127-generic: - Installed: 4.4.0-127.153 - Candidate: 4.4.0-127.153 - Version table: - *** 4.4.0-127.153 500 - 500 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages - 500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages - 100 /var/lib/dpkg/status + Installed: 4.4.0-127.153 + Candidate: 4.4.0-127.153 + Version table: + *** 4.4.0-127.153 500 + 500 http://archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages + 500 http://security.ubuntu.com/ubuntu xenial-security/main amd64 Packages + 100 /var/lib/dpkg/status ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.4.0-127-generic 4.4.0-127.153 ProcVersionSignature: Ubuntu 4.4.0-127.153-generic 4.4.128 Uname: Linux 4.4.0-127-generic x86_64 AlsaDevices: - total 0 - crw-rw---- 1 root audio 116, 1 May 22 20:08 seq - crw-rw---- 1 root audio 116, 33 May 22 20:08 timer + total 0 + crw-rw---- 1 root audio 116, 1 May 22 20:08 seq + crw-rw---- 1 root audio 116, 33 May 22 20:08 timer AplayDevices: Error: [Errno 2] No such file or directory: 'aplay' ApportVersion: 2.20.1-0ubuntu2.17 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord' AudioDevicesInUse: Error: [Errno 2] No such file or directory: 'fuser' CRDA: N/A Date: Tue May 22 21:18:45 2018 IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig' Lspci: Error: [Errno 2] No such file or directory: 'lspci' Lsusb: Error: [Errno 2] No such file or directory: 'lsusb' MachineType: QEMU Standard PC (i440FX + PIIX, 1996) PciMultimedia: - + ProcEnviron: - TERM=xterm - PATH=(custom, no user) - LANG=en_US.UTF-8 - SHELL=/bin/bash + TERM=xterm + PATH=(custom, no user) + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-127-generic root=UUID=67f7ee15-64f4-4c85-805c-08386d5fed8b ro console=ttyS0 net.ifnames=0 kaslr vsyscall=none nmi_watchdog=0 possible_cpus=1 pti=on nr_cpus=1 RelatedPackageVersions: - linux-restricted-modules-4.4.0-127-generic N/A - linux-backports-modules-4.4.0-127-generic N/A - linux-firmware N/A + linux-restricted-modules-4.4.0-127-generic N/A + linux-backports-modules-4.4.0-127-generic N/A + linux-firmware N/A RfKill: Error: [Errno 2] No such file or directory: 'rfkill' SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 04/01/2014 dmi.bios.vendor: SeaBIOS dmi.bios.version: Ubuntu-1.8.2-1ubuntu1 dmi.chassis.type: 1 dmi.chassis.vendor: QEMU dmi.chassis.version: pc-i440fx-2.5 dmi.modalias: dmi:bvnSeaBIOS:bvrUbuntu-1.8.2-1ubuntu1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-2.5:cvnQEMU:ct1:cvrpc-i440fx-2.5: dmi.product.name: Standard PC (i440FX + PIIX, 1996) dmi.product.version: pc-i440fx-2.5 dmi.sys.vendor: QEMU - --- + --- AlsaDevices: - total 0 - crw-rw---- 1 root audio 116, 1 May 22 21:33 seq - crw-rw---- 1 root audio 116, 33 May 22 21:33 timer + total 0 + crw-rw---- 1 root audio 116, 1 May 22 21:33 seq + crw-rw---- 1 root audio 116, 33 May 22 21:33 timer AplayDevices: Error: [Errno 2] No such file or directory ApportVersion: 2.20.1-0ubuntu2.17 Architecture: amd64 ArecordDevices: Error: [Errno 2] No such file or directory AudioDevicesInUse: Error: [Errno 2] No such file or directory CRDA: N/A DistroRelease: Ubuntu 16.04 IwConfig: Error: [Errno 2] No such file or directory Lspci: Error: [Errno 2] No such file or directory Lsusb: Error: [Errno 2] No such file or directory MachineType: QEMU Standard PC (i440FX + PIIX, 1996) Package: linux (not installed) PciMultimedia: - + ProcEnviron: - TERM=xterm - PATH=(custom, no user) - LANG=en_US.UTF-8 - SHELL=/bin/bash + TERM=xterm + PATH=(custom, no user) + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcFB: 0 EFI VGA ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-124-generic root=UUID=67f7ee15-64f4-4c85-805c-08386d5fed8b ro kaslr net.ifnames=0 nmi_watchdog=0 nr_cpus=1 pti=on console=ttyS0 vsyscall=none ProcVersionSignature: Ubuntu 4.4.0-124.148-generic 4.4.117 RelatedPackageVersions: - linux-restricted-modules-4.4.0-124-generic N/A - linux-backports-modules-4.4.0-124-generic N/A - linux-firmware N/A + linux-restricted-modules-4.4.0-124-generic N/A + linux-backports-modules-4.4.0-124-generic N/A + linux-firmware N/A RfKill: Error: [Errno 2] No such file or directory Tags: xenial Uname: Linux 4.4.0-124-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: - + _MarkForUpload: True dmi.bios.date: 04/01/2014 dmi.bios.vendor: SeaBIOS dmi.bios.version: Ubuntu-1.8.2-1ubuntu1 dmi.chassis.type: 1 dmi.chassis.vendor: QEMU dmi.chassis.version: pc-i440fx-2.5 dmi.modalias: dmi:bvnSeaBIOS:bvrUbuntu-1.8.2-1ubuntu1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-2.5:cvnQEMU:ct1:cvrpc-i440fx-2.5: dmi.product.name: Standard PC (i440FX + PIIX, 1996) dmi.product.version: pc-i440fx-2.5 dmi.sys.vendor: QEMU -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1772775 Title: 4.4.0-127.153 generates many "sit: non-ECT" messages To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1772775/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs