** Description changed: + == SRU Request [Xenial][Artful] == + + == Justification == + + It is possible to hang zfs asynchronous reads if a read to a page that + is mmap'd onto the the file being read is the same offset in the mapping + as in the file. This is caused by two lock operations on the page. + + == Fix == + + Upstream ZFS fix to ensure the page is not double-locked during async + I/O of one or more pages. + + == Testing == + + Create a zfs pool + zfs file system, run the reproducer program in + comment #28 on the zfs filesystem. Without the fix this can lock up, + with the fix this runs to completion. + + == Regression Potential == + + Minimal, the locking fix addresses a fundamental bug in the locking and + this should not affect ZFS read/write I/O with this fix. + + ---------------------- + Summary: On a Bionic system running 4.15.0-10-generic, after attempting to build libaio in a Bionic daily container I cannot stop or delete the container. dmesg shows a variety of hung tasks Steps to Reproduce: Use the following script and watch for the the hang. At that point attempt to stop or delete the container: http://paste.ubuntu.com/p/SxfgbxM8v7/ Originally filed against LXD: https://github.com/lxc/lxd/issues/4314 ProblemType: Bug DistroRelease: Ubuntu 18.04 Package: linux-image-4.15.0-10-generic 4.15.0-10.11 ProcVersionSignature: Ubuntu 4.15.0-10.11-generic 4.15.3 Uname: Linux 4.15.0-10-generic x86_64 NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair ApportVersion: 2.20.8-0ubuntu10 Architecture: amd64 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC1: powersj 2414 F.... pulseaudio - /dev/snd/controlC0: powersj 2414 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC1: powersj 2414 F.... pulseaudio + /dev/snd/controlC0: powersj 2414 F.... pulseaudio CurrentDesktop: ubuntu:GNOME Date: Fri Mar 9 09:19:11 2018 HibernationDevice: RESUME=UUID=40a4eb28-4454-44f0-a377-ea611ce685bb InstallationDate: Installed on 2018-02-19 (17 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180214) Lsusb: - Bus 001 Device 002: ID 8087:8001 Intel Corp. - Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub - Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub - Bus 002 Device 002: ID 04f2:b45d Chicony Electronics Co., Ltd - Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub + Bus 001 Device 002: ID 8087:8001 Intel Corp. + Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub + Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub + Bus 002 Device 002: ID 04f2:b45d Chicony Electronics Co., Ltd + Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: LENOVO 20BSCTO1WW ProcEnviron: - TERM=xterm-256color - PATH=(custom, no user) - XDG_RUNTIME_DIR=<set> - LANG=en_US.UTF-8 - SHELL=/bin/bash + TERM=xterm-256color + PATH=(custom, no user) + XDG_RUNTIME_DIR=<set> + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-10-generic root=/dev/mapper/ubuntu--vg-root ro RelatedPackageVersions: - linux-restricted-modules-4.15.0-10-generic N/A - linux-backports-modules-4.15.0-10-generic N/A - linux-firmware 1.172 + linux-restricted-modules-4.15.0-10-generic N/A + linux-backports-modules-4.15.0-10-generic N/A + linux-firmware 1.172 RfKill: - 0: phy0: Wireless LAN - Soft blocked: no - Hard blocked: no + 0: phy0: Wireless LAN + Soft blocked: no + Hard blocked: no SourcePackage: linux UpgradeStatus: No upgrade log present (probably fresh install) dmi.bios.date: 09/13/2017 dmi.bios.vendor: LENOVO dmi.bios.version: N14ET42W (1.20 ) dmi.board.asset.tag: Not Available dmi.board.name: 20BSCTO1WW dmi.board.vendor: LENOVO dmi.board.version: SDK0E50512 STD dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN14ET42W(1.20):bd09/13/2017:svnLENOVO:pn20BSCTO1WW:pvrThinkPadX1Carbon3rd:rvnLENOVO:rn20BSCTO1WW:rvrSDK0E50512STD:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad X1 Carbon 3rd dmi.product.name: 20BSCTO1WW dmi.product.version: ThinkPad X1 Carbon 3rd dmi.sys.vendor: LENOVO - --- + --- ApportVersion: 2.20.8-0ubuntu10 Architecture: amd64 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC1: powersj 1878 F.... pulseaudio - /dev/snd/controlC0: powersj 1878 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC1: powersj 1878 F.... pulseaudio + /dev/snd/controlC0: powersj 1878 F.... pulseaudio CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 18.04 HibernationDevice: RESUME=UUID=40a4eb28-4454-44f0-a377-ea611ce685bb InstallationDate: Installed on 2018-02-19 (17 days ago) InstallationMedia: Ubuntu 18.04 LTS "Bionic Beaver" - Alpha amd64 (20180214) Lsusb: - Bus 001 Device 002: ID 8087:8001 Intel Corp. - Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub - Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub - Bus 002 Device 002: ID 04f2:b45d Chicony Electronics Co., Ltd - Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub + Bus 001 Device 002: ID 8087:8001 Intel Corp. + Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub + Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub + Bus 002 Device 002: ID 04f2:b45d Chicony Electronics Co., Ltd + Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub MachineType: LENOVO 20BSCTO1WW NonfreeKernelModules: zfs zunicode zavl icp zcommon znvpair Package: linux (not installed) ProcEnviron: - TERM=xterm-256color - PATH=(custom, no user) - XDG_RUNTIME_DIR=<set> - LANG=en_US.UTF-8 - SHELL=/bin/bash + TERM=xterm-256color + PATH=(custom, no user) + XDG_RUNTIME_DIR=<set> + LANG=en_US.UTF-8 + SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.15.0-12-generic root=/dev/mapper/ubuntu--vg-root ro ProcVersionSignature: Ubuntu 4.15.0-12.13-generic 4.15.7 RelatedPackageVersions: - linux-restricted-modules-4.15.0-12-generic N/A - linux-backports-modules-4.15.0-12-generic N/A - linux-firmware 1.172 + linux-restricted-modules-4.15.0-12-generic N/A + linux-backports-modules-4.15.0-12-generic N/A + linux-firmware 1.172 RfKill: - 0: phy0: Wireless LAN - Soft blocked: no - Hard blocked: no + 0: phy0: Wireless LAN + Soft blocked: no + Hard blocked: no Tags: bionic Uname: Linux 4.15.0-12-generic x86_64 UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: adm cdrom dip libvirt lpadmin lxd plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 09/13/2017 dmi.bios.vendor: LENOVO dmi.bios.version: N14ET42W (1.20 ) dmi.board.asset.tag: Not Available dmi.board.name: 20BSCTO1WW dmi.board.vendor: LENOVO dmi.board.version: SDK0E50512 STD dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: None dmi.modalias: dmi:bvnLENOVO:bvrN14ET42W(1.20):bd09/13/2017:svnLENOVO:pn20BSCTO1WW:pvrThinkPadX1Carbon3rd:rvnLENOVO:rn20BSCTO1WW:rvrSDK0E50512STD:cvnLENOVO:ct10:cvrNone: dmi.product.family: ThinkPad X1 Carbon 3rd dmi.product.name: 20BSCTO1WW dmi.product.version: ThinkPad X1 Carbon 3rd dmi.sys.vendor: LENOVO
-- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1754584 Title: zfs system process hung on container stop/delete To manage notifications about this bug go to: https://bugs.launchpad.net/zfs/+bug/1754584/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
