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[Jürg Häfliger <1809870@xxxxxxxxxxxxxxxxxx>]

** Tags added: kernel-daily-bug

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https://bugs.launchpad.net/bugs/1809870

Title:
  2365dd3ca02bbb6d3412404482e1d85752549953 in ubuntu_btrfs_kernel_fixes
  failed on B

Status in ubuntu-kernel-tests:
  Fix Released
Status in linux package in Ubuntu:
  Invalid

Bug description:
  Test failed on Bionic, and this patch does exist in Bionic kernel
  tree.

  
  Invoking test 2365dd3ca02bbb6d3412404482e1d85752549953

  fix 2365dd3ca02bbb6d3412404482e1d85752549953

  btrfs: undo sysfs when open_ctree() fails

      reproducer:
      mkfs.btrfs -f /dev/sdb &&    mount /dev/sdb /btrfs &&    btrfs dev add -f /dev/sdc /btrfs &&    umount /btrfs &&    wipefs -a /dev/sdc &&    mount -o degraded /dev/sdb /btrfs
      //above mount fails so try with RO
      mount -o degraded,ro /dev/sdb /btrfs

      ------
      sysfs: cannot create duplicate filename '/fs/btrfs/3f48c79e-5ed0-4e87-b189-86e749e503f4'
      ::

  Performing full device TRIM /dev/loop1 (512.00MiB) ...
  mount -o degraded /dev/loop0 /tmp/mnt-2365dd3ca02bbb6d3412404482e1d85752549953 was expected to fail

  FAIL: 2365dd3ca02bbb6d3412404482e1d85752549953 (ret=1)

  ProblemType: Bug
  DistroRelease: Ubuntu 18.04
  Package: linux-image-4.15.0-43-generic 4.15.0-43.46
  ProcVersionSignature: User Name 4.15.0-43.46-generic 4.15.18
  Uname: Linux 4.15.0-43-generic x86_64
  AlsaDevices:
   total 0
   crw-rw---- 1 root audio 116,  1 Dec 20 18:17 seq
   crw-rw---- 1 root audio 116, 33 Dec 20 18:17 timer
  AplayDevices: Error: [Errno 2] No such file or directory: 'aplay': 'aplay'
  ApportVersion: 2.20.9-0ubuntu7.5
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory: 'arecord': 'arecord'
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CurrentDmesg:
   
  Date: Thu Dec 27 07:34:54 2018
  IwConfig: Error: [Errno 2] No such file or directory: 'iwconfig': 'iwconfig'
  Lsusb: Bus 001 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
  MachineType: QEMU Standard PC (i440FX + PIIX, 1996)
  PciMultimedia:
   
  ProcFB: 0 cirrusdrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-43-generic root=UUID=2f68c627-8ab4-40d5-8c06-6563436d0f96 ro console=ttyS0,115200n8
  RelatedPackageVersions:
   linux-restricted-modules-4.15.0-43-generic N/A
   linux-backports-modules-4.15.0-43-generic  N/A
   linux-firmware                             1.173.2
  RfKill: Error: [Errno 2] No such file or directory: 'rfkill': '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

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