Public bug reported: On a system running a 5.2 kernel, doing a large number of mounts of squashfs filesystems in parallel results in the mounts getting out of sync with their backing devices.
To reproduce, https://paste.ubuntu.com/p/VCpzGxvy6h/ this breaks people with ~40 snaps (easily achievable given snapd leaves up to 3 previous revisions of snaps mounted at any given time, so a person with ~13 snaps that get updated often will hit this number). ProblemType: Bug DistroRelease: Ubuntu 19.10 Package: linux-image-5.2.0-8-generic 5.2.0-8.9 ProcVersionSignature: Ubuntu 5.2.0-8.9-generic 5.2.0 Uname: Linux 5.2.0-8-generic x86_64 ApportVersion: 2.20.11-0ubuntu5 Architecture: amd64 AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1: CurrentDesktop: ubuntu:GNOME Date: Wed Jul 17 15:11:15 2019 InstallationDate: Installed on 2019-07-17 (0 days ago) InstallationMedia: Ubuntu 19.10 "Eoan Ermine" - Alpha amd64 (20190716) IwConfig: ens3 no wireless extensions. lo no wireless extensions. Lsusb: Error: command ['lsusb'] failed with exit code 1: MachineType: QEMU Standard PC (i440FX + PIIX, 1996) ProcFB: 0 qxldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.2.0-8-generic root=UUID=9618ebbb-955d-4daf-b29a-37162ec7821a ro quiet splash vt.handoff=7 RelatedPackageVersions: linux-restricted-modules-5.2.0-8-generic N/A linux-backports-modules-5.2.0-8-generic N/A linux-firmware 1.180 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-xenial dmi.modalias: dmi:bvnSeaBIOS:bvrUbuntu-1.8.2-1ubuntu1:bd04/01/2014:svnQEMU:pnStandardPC(i440FX+PIIX,1996):pvrpc-i440fx-xenial:cvnQEMU:ct1:cvrpc-i440fx-xenial: dmi.product.name: Standard PC (i440FX + PIIX, 1996) dmi.product.version: pc-i440fx-xenial dmi.sys.vendor: QEMU ** Affects: linux (Ubuntu) Importance: Critical Status: Confirmed ** Tags: amd64 apport-bug eoan rls-ee-incoming -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1836914 Title: Doing multiple squashfs (and other loop?) mounts in parallel breaks To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1836914/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
