Reading the thread further, we seem to need two patches, see https://www.spinics.net/lists/netdev/msg462051.html, so I'm going to add bc6d6fd2f916a0794ae4c44b28e14e2d172e05e0 into the build, too. Will try that on top of b32038eb34ee42fd8056f99f88652270f6667996 (tag: Ubuntu-4.13.0-32.35).
I also tested the "ethtool --set-priv-flags <intf> flow-director-atr off" option and it seems to slow down the leak similar to >= 4.14 kernels. So either that fixes only part of the issue or we have a different one that only got masked up to now. Third option would be using the upstream i40e driver instead, testing with 2.3.4 currently and that also seems to resolve the issue. -- 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/1748408 Title: Servers going OOM after updating kernel from 4.10 to 4.13 Status in linux package in Ubuntu: Triaged Status in linux source package in Artful: Triaged Bug description: We are seeing this on multiple servers after upgrading from previous 4.10 series HWE kernels to the new 4.13 HWE series. With the new kernel, free memory is continously decreasing at a high rate and the servers start swapping and finally OOMing services within days. With the 4.10 kernel, decrease of free memory is slower and stabilizes after a while. Latest kernel tested is linux-image-4.13.0-32-generic but the issue also affects older kernels from that series, tested back to linux- image-4.13.0-19-generic. No issue with linux-image-4.10.0-42-generic. The servers are running as OpenStack controller nodes using either Ocata or Pike UCA plus ceph. See attached graph for the memory behaviour. ProblemType: Bug DistroRelease: Ubuntu 16.04 Package: linux-image-4.13.0-32-generic 4.13.0-32.35~16.04.1 ProcVersionSignature: Ubuntu 4.13.0-32.35~16.04.1-generic 4.13.13 Uname: Linux 4.13.0-32-generic x86_64 ApportVersion: 2.20.1-0ubuntu2.15 Architecture: amd64 Date: Fri Feb 9 09:45:50 2018 ProcEnviron: LANGUAGE=en_US: TERM=screen PATH=(custom, no user) LANG=en_US.utf8 SHELL=/bin/bash SourcePackage: linux-hwe UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1748408/+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
