Thanks for finding the mainline 4.10 does not have the bug and 4.11 final does. Can you also test v4.11-rc1, so we can find which release candidate introduced the bug?
http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.11-rc1 -- 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/1762468 Title: Cryptoswap not working in Bionic Status in linux package in Ubuntu: Confirmed Status in linux source package in Bionic: Confirmed Bug description: I have cryptoswap set up both with the 2 GB default swap file and an 8 GB swap partition with 8 GB of ram. However, the system does not use this swap when it should. For example, if I run a little test code which attempts to allocate 10 GB of memory in 1 GB chuncks, the system hangs with no obvious use of swap. E.g. running top shows no swap use before the hang. However, if I replace cryptoswap by standard swap, it works as expected: allocates the requested memory and exits, using swap. Of course, my disk is slow, so this takes some time but it does work. I originally noticed this problem when compiling a very large application. The system would hang on ld. I've checked hardware using memtest and stress. No problems. This took me days to track down but I'm 99% certain now that the problem is with cryptoswap. If I compile with cryptoswap: hang. If I compile with standard swap: no problem. ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-13-generic 4.15.0-13.14 ProcVersionSignature: Ubuntu 4.15.0-13.14-generic 4.15.10 Uname: Linux 4.15.0-13-generic x86_64 ApportVersion: 2.20.9-0ubuntu4 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC1: weinberg 2425 F.... pulseaudio /dev/snd/controlC0: weinberg 2425 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Mon Apr 9 11:57:23 2018 EcryptfsInUse: Yes HibernationDevice: RESUME=UUID=8d33a538-4ec4-418d-b277-be1a9a1c1113 InstallationDate: Installed on 2018-03-12 (28 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180114) MachineType: LENOVO 20ARA0S100 ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-13-generic root=UUID=b6683bc1-7dd5-4afd-8e70-f69253403b71 ro quiet splash vt.handoff=1 RelatedPackageVersions: linux-restricted-modules-4.15.0-13-generic N/A linux-backports-modules-4.15.0-13-generic N/A linux-firmware 1.173 SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 03/19/2014 dmi.bios.vendor: LENOVO dmi.bios.version: GJET74WW (2.24 ) dmi.board.asset.tag: Not Available dmi.board.name: 20ARA0S100 dmi.board.vendor: LENOVO dmi.board.version: Not Defined dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvrGJET74WW(2.24):bd03/19/2014:svnLENOVO:pn20ARA0S100:pvrThinkPadT440s:rvnLENOVO:rn20ARA0S100:rvrNotDefined:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.family: ThinkPad T440s dmi.product.name: 20ARA0S100 dmi.product.version: ThinkPad T440s dmi.sys.vendor: LENOVO To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1762468/+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
