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[Bob Lantz <rlantz@xxxxxxxxxxxxxxx>]

[ 2091.229234] unregister_netdevice: waiting for lo to become free. Usage count = 3
[ 2101.338376] unregister_netdevice: waiting for lo to become free. Usage count = 3

** Changed in: linux (Ubuntu)
       Status: Incomplete => Confirmed

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https://bugs.launchpad.net/bugs/1197078

Title:
  mininet created devices are not deleted correctly

Status in “linux” package in Ubuntu:
  Confirmed
Status in “mininet” package in Ubuntu:
  Confirmed

Bug description:
  Raised upstream:

  https://mailman.stanford.edu/pipermail/mininet-
  discuss/2013-July/002473.html

  Also seen in DEP-8 tests for Saucy:

  https://jenkins.qa.ubuntu.com/job/saucy-adt-
  openvswitch/28/ARCH=i386,label=adt/

  Syslog extract:

  
  Jul  1 10:57:42 autopkgtest ovs-vsctl: 00001|vsctl|INFO|Called as ovs-vsctl del-br s2
  Jul  1 10:57:42 autopkgtest kernel: [  402.953438] device s2-eth3 left promiscuous mode
  Jul  1 10:57:42 autopkgtest kernel: [  402.953588] device s2-eth4 left promiscuous mode
  Jul  1 10:57:42 autopkgtest kernel: [  402.953724] device s2-eth7 left promiscuous mode
  Jul  1 10:57:42 autopkgtest kernel: [  402.953853] device s2-eth6 left promiscuous mode
  Jul  1 10:57:42 autopkgtest kernel: [  402.953986] device s2-eth2 left promiscuous mode
  Jul  1 10:57:42 autopkgtest kernel: [  402.954049] device s2 left promiscuous mode
  Jul  1 10:57:42 autopkgtest ovs-controller: 00366|poll_loop|DBG|wakeup due to [POLLIN] on fd 9 (127.0.0.1:6633<->127.0.0.1:40235) at ../lib/stream-fd.c:142 (0% CPU usage)
  Jul  1 10:57:42 autopkgtest ovs-controller: 00367|rconn|DBG|tcp:127.0.0.1:40235: connection closed by peer
  Jul  1 10:57:42 autopkgtest ovs-controller: 00368|rconn|DBG|void: entering VOID
  Jul  1 10:57:42 autopkgtest ovs-controller: 00369|poll_loop|DBG|wakeup due to [POLLIN] on fd 6 (FIFO pipe:[44662]) at ../lib/fatal-signal.c:173 (0% CPU usage)
  Jul  1 10:57:42 autopkgtest ovs-controller: 00370|fatal_signal|WARN|terminating with signal 15 (Terminated)
  Jul  1 10:57:42 autopkgtest kernel: [  403.376840] IPv6: ADDRCONF(NETDEV_UP): s1-eth1: link is not ready
  Jul  1 10:57:52 autopkgtest kernel: [  413.552113] unregister_netdevice: waiting for lo to become free. Usage count = 2
  Jul  1 10:58:03 autopkgtest kernel: [  423.792110] unregister_netdevice: waiting for lo to become free. Usage count = 2
  Jul  1 10:58:13 autopkgtest kernel: [  434.032116] unregister_netdevice: waiting for lo to become free. Usage count = 2
  Jul  1 10:58:23 autopkgtest kernel: [  444.272126] unregister_netdevice: waiting for lo to become free. Usage count = 2

  ProblemType: Bug
  DistroRelease: Ubuntu 13.10
  Package: mininet 2.0.0-0ubuntu1
  ProcVersionSignature: Ubuntu 3.10.0-1.8-generic 3.10.0-rc7
  Uname: Linux 3.10.0-1-generic x86_64
  ApportVersion: 2.10.2-0ubuntu3
  Architecture: amd64
  Date: Tue Jul  2 19:17:36 2013
  EcryptfsInUse: Yes
  InstallationDate: Installed on 2013-04-23 (70 days ago)
  InstallationMedia: Ubuntu 13.04 "Raring Ringtail" - Release amd64 (20130423)
  MarkForUpload: True
  SourcePackage: mininet
  UpgradeStatus: Upgraded to saucy on 2013-06-15 (16 days ago)
  --- 
  AlsaVersion: Advanced Linux Sound Architecture Driver Version k3.10.0-1-generic.
  AplayDevices: Error: [Errno 2] No such file or directory
  ApportVersion: 2.10.2-0ubuntu3
  Architecture: amd64
  ArecordDevices: Error: [Errno 2] No such file or directory
  AudioDevicesInUse: Error: command ['fuser', '-v', '/dev/snd/by-path', '/dev/snd/controlC0', '/dev/snd/hwC0D0', '/dev/snd/pcmC0D0c', '/dev/snd/pcmC0D0p', '/dev/snd/seq', '/dev/snd/timer'] failed with exit code 1:
  CRDA: Error: [Errno 2] No such file or directory
  Card0.Amixer.info: Error: [Errno 2] No such file or directory
  Card0.Amixer.values: Error: [Errno 2] No such file or directory
  DistroRelease: Ubuntu 13.10
  HibernationDevice: RESUME=UUID=bef939a0-3cc6-48d6-b35f-c20c153e248e
  InstallationDate: Installed on 2013-05-20 (43 days ago)
  InstallationMedia: Ubuntu-Server 13.10 "Saucy Salamander" - Alpha amd64 (20130520)
  MachineType: Dell Inc. Vostro 1220
  MarkForUpload: True
  Package: mininet 2.0.0-0ubuntu1
  PackageArchitecture: amd64
  ProcFB: 0 inteldrmfb
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.10.0-1-generic root=/dev/mapper/hostname--vg-root ro
  ProcVersionSignature: Ubuntu 3.10.0-1.8-generic 3.10.0-rc7
  RelatedPackageVersions:
   linux-restricted-modules-3.10.0-1-generic N/A
   linux-backports-modules-3.10.0-1-generic  N/A
   linux-firmware                            1.110
  RfKill: Error: [Errno 2] No such file or directory
  Tags:  saucy saucy
  Uname: Linux 3.10.0-1-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
  dmi.bios.date: 10/15/2009
  dmi.bios.vendor: Dell Inc.
  dmi.bios.version: 1.3.0
  dmi.board.name: 0Y743R
  dmi.board.vendor: Dell Inc.
  dmi.chassis.type: 8
  dmi.chassis.vendor: Dell Inc.
  dmi.modalias: dmi:bvnDellInc.:bvr1.3.0:bd10/15/2009:svnDellInc.:pnVostro1220:pvr:rvnDellInc.:rn0Y743R:rvr:cvnDellInc.:ct8:cvr:
  dmi.product.name: Vostro 1220
  dmi.sys.vendor: Dell Inc.

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