A colleague found that this seems to be a known issue: https://www.spinics.net/lists/netdev/msg458258.html
and the fix should be https://git.kernel.org/pub/scm/linux/kernel/git/davem/net.git/commit/drivers/net/ethernet/intel/i40e/i40e_txrx.c?id=2b9478ffc550f17c6cd8c69057234e91150f5972 I will try cherry-picking this onto 4.13, not sure why it never seems to have been pulled into the stable branch. Also not sure why we are still seeing issues with >= 4.14, very likely a completely different issue there, but I think we'll be fine if we get 4.13 fixed for now. -- 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
