[Bug 1282119] Re: udisks-daemon randomly uses 100% CPU

Thu Feb 20 15:23:26 UTC 2014

Status changed to 'Confirmed' because the bug affects multiple users.

** Changed in: udisks (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1282119

Title:
  udisks-daemon randomly uses 100% CPU

Status in “udisks” package in Ubuntu:
  Confirmed

Bug description:
  Ever since i freshly installed Kubuntu 13.10, some hours after system
  boot the udisks-daemon starts to use 100% of the CPU.

  The symptoms are similar to this debian bug: https://bugs.debian.org
  /cgi-bin/bugreport.cgi?bug=728798

  Usually i also just kill the daemon, but this problem persists after every reboot. Due to the random nature of the problem it's somewhat hard to debug and to know what information is helpful.
  I usually just write some code or documentation and doesn't insert any new media, devices, cables, etc.

  strace shows, that it is polling in a tight loop:

  poll([{fd=5, events=POLLIN}, {fd=8, events=POLLPRI}, {fd=10, events=POLLIN}, {fd=11, events=0}, {fd=3, events=POLLIN}, {fd=16, events=POLLIN}, {fd=19, events=POLLIN}], 7, 1173318) = 2 ([{fd=16, revents=POLLHUP}, {fd=19, revents=POLLHUP}])
  poll([{fd=5, events=POLLIN}, {fd=8, events=POLLPRI}, {fd=10, events=POLLIN}, {fd=11, events=0}, {fd=3, events=POLLIN}, {fd=16, events=POLLIN}, {fd=19, events=POLLIN}], 7, 1173318) = 2 ([{fd=16, revents=POLLHUP}, {fd=19, revents=POLLHUP}])
  poll([{fd=5, events=POLLIN}, {fd=8, events=POLLPRI}, {fd=10, events=POLLIN}, {fd=11, events=0}, {fd=3, events=POLLIN}, {fd=16, events=POLLIN}, {fd=19, events=POLLIN}], 7, 1173318) = 2 ([{fd=16, revents=POLLHUP}, {fd=19, revents=POLLHUP}])
  poll([{fd=5, events=POLLIN}, {fd=8, events=POLLPRI}, {fd=10, events=POLLIN}, {fd=11, events=0}, {fd=3, events=POLLIN}, {fd=16, events=POLLIN}, {fd=19, events=POLLIN}], 7, 1173318) = 2 ([{fd=16, revents=POLLHUP}, {fd=19, revents=POLLHUP}])
  poll([{fd=5, events=POLLIN}, {fd=8, events=POLLPRI}, {fd=10, events=POLLIN}, {fd=11, events=0}, {fd=3, events=POLLIN}, {fd=16, events=POLLIN}, {fd=19, events=POLLIN}], 7, 1173318) = 2 ([{fd=16, revents=POLLHUP}, {fd=19, revents=POLLHUP}])
  poll([{fd=5, events=POLLIN}, {fd=8, events=POLLPRI}, {fd=10, events=POLLIN}, {fd=11, events=0}, {fd=3, events=POLLIN}, {fd=16, events=POLLIN}, {fd=19, events=POLLIN}], 7, 1173317) = 2 ([{fd=16, revents=POLLHUP}, {fd=19, revents=POLLHUP}])
  poll([{fd=5, events=POLLIN}, {fd=8, events=POLLPRI}, {fd=10, events=POLLIN}, {fd=11, events=0}, {fd=3, events=POLLIN}, {fd=16, events=POLLIN}, {fd=19, events=POLLIN}], 7, 1173317) = 2 ([{fd=16, revents=POLLHUP}, {fd=19, revents=POLLHUP}])
  poll([{fd=5, events=POLLIN}, {fd=8, events=POLLPRI}, {fd=10, events=POLLIN}, {fd=11, events=0}, {fd=3, events=POLLIN}, {fd=16, events=POLLIN}, {fd=19, events=POLLIN}], 7, 1173317) = 2 ([{fd=16, revents=POLLHUP}, {fd=19, revents=POLLHUP}])

  fd 19 is a pipe

  sudo ls -al /proc/2223/fd
  insgesamt 0
  dr-x------ 2 root root  0 Feb 18 22:39 .
  dr-xr-xr-x 9 root root  0 Feb 18 22:27 ..
  lrwx------ 1 root root 64 Feb 18 22:39 0 -> /dev/null
  lrwx------ 1 root root 64 Feb 18 22:39 1 -> /dev/null
  lrwx------ 1 root root 64 Feb 18 22:39 10 -> socket:[15709]
  lr-x------ 1 root root 64 Feb 18 22:39 11 -> /proc/2223/mountinfo
  lrwx------ 1 root root 64 Feb 18 22:39 12 -> anon_inode:[eventfd]
  lr-x------ 1 root root 64 Feb 19 15:39 16 -> pipe:[404569]
  lr-x------ 1 root root 64 Feb 19 15:39 19 -> pipe:[404570]
  lrwx------ 1 root root 64 Feb 18 22:39 2 -> /dev/null
  lrwx------ 1 root root 64 Feb 18 22:39 3 -> socket:[15707]
  l-wx------ 1 root root 64 Feb 18 22:39 4 -> pipe:[15705]
  lrwx------ 1 root root 64 Feb 18 22:39 5 -> anon_inode:[eventfd]
  lrwx------ 1 root root 64 Feb 18 22:39 6 -> socket:[15708]
  lrwx------ 1 root root 64 Feb 18 22:39 7 -> anon_inode:[eventfd]
  lr-x------ 1 root root 64 Feb 18 22:39 8 -> /proc/mdstat
  lrwx------ 1 root root 64 Feb 18 22:39 9 -> anon_inode:[eventfd]

  udisks:
    Installiert:           1.0.4-8ubuntu1
    Installationskandidat: 1.0.4-8ubuntu1
    Versionstabelle:
   *** 1.0.4-8ubuntu1 0
          500 http://ubuntu.inode.at/ubuntu/ saucy/main amd64 Packages
          100 /var/lib/dpkg/status

  Any help is appreciated.

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: udisks 1.0.4-8ubuntu1
  ProcVersionSignature: Ubuntu 3.11.0-17.31-generic 3.11.10.3
  Uname: Linux 3.11.0-17-generic x86_64
  ApportVersion: 2.12.5-0ubuntu2.2
  Architecture: amd64
  CustomUdevRuleFiles: 51-android.rules 60-vboxdrv.rules
  Date: Wed Feb 19 15:56:16 2014
  EcryptfsInUse: Yes
  ExecutablePath: /usr/lib/udisks/udisks-daemon
  InstallationDate: Installed on 2013-10-18 (124 days ago)
  InstallationMedia: Kubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
  MachineType: LENOVO 2537UQF
  MarkForUpload: True
  ProcEnviron:

  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.11.0-17-generic root=UUID=f550bcf2-1f7d-467a-b357-133b771b57b5 ro quiet splash i915.i915_enable_rc6=1 pcie_aspm=force vt.handoff=7
  SourcePackage: udisks
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 07/15/2011
  dmi.bios.vendor: LENOVO
  dmi.bios.version: 6IET79WW (1.39 )
  dmi.board.name: 2537UQF
  dmi.board.vendor: LENOVO
  dmi.board.version: Not Available
  dmi.chassis.asset.tag: No Asset Information
  dmi.chassis.type: 10
  dmi.chassis.vendor: LENOVO
  dmi.chassis.version: Not Available
  dmi.modalias: dmi:bvnLENOVO:bvr6IET79WW(1.39):bd07/15/2011:svnLENOVO:pn2537UQF:pvrThinkPadT410:rvnLENOVO:rn2537UQF:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
  dmi.product.name: 2537UQF
  dmi.product.version: ThinkPad T410
  dmi.sys.vendor: LENOVO

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