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[Chad Miller <chad.miller@xxxxxxxxxxxxx>]

apparmor="DENIED" operation="open" profile="/usr/lib/lightdm/lightdm-guest-session" name="/proc/sys/kernel/cap_last_cap" pid=20779 comm="dbus-daemon" requested_mask="r" denied_mask="r" fsuid=135 ouid=0
apparmor="DENIED" operation="open" profile="/usr/lib/lightdm/lightdm-guest-session" name="/proc/sys/kernel/cap_last_cap" pid=20800 comm="gnome-keyring-d" requested_mask="r" denied_mask="r" fsuid=135 ouid=0
apparmor="DENIED" operation="open" profile="/usr/lib/lightdm/lightdm-guest-session" name="/proc/sys/kernel/cap_last_cap" pid=20806 comm="gnome-keyring-d" requested_mask="r" denied_mask="r" fsuid=135 ouid=0
apparmor="DENIED" operation="exec" info="profile not found" error=-2 profile="/usr/lib/lightdm/lightdm-guest-session" name="/bin/fusermount" pid=20882 comm="gvfsd-fuse" requested_mask="x" denied_mask="x" fsuid=135 ouid=0
apparmor="DENIED" operation="exec" info="profile not found" error=-2 profile="/usr/lib/lightdm/lightdm-guest-session" name="/bin/fusermount" pid=20882 comm="gvfsd-fuse" requested_mask="x" denied_mask="x" fsuid=135 ouid=0
apparmor="DENIED" operation="exec" info="profile not found" error=-2 profile="/usr/lib/lightdm/lightdm-guest-session" name="/bin/fusermount" pid=20888 comm="gvfsd-fuse" requested_mask="x" denied_mask="x" fsuid=135 ouid=0
apparmor="DENIED" operation="exec" info="profile not found" error=-2 profile="/usr/lib/lightdm/lightdm-guest-session" name="/bin/fusermount" pid=20888 comm="gvfsd-fuse" requested_mask="x" denied_mask="x" fsuid=135 ouid=0
apparmor="DENIED" operation="open" profile="/usr/lib/lightdm/lightdm-guest-session" name="/proc/sys/kernel/cap_last_cap" pid=21048 comm="dbus-daemon" requested_mask="r" denied_mask="r" fsuid=135 ouid=0
apparmor="DENIED" operation="open" profile="/usr/lib/lightdm/lightdm-guest-session" name="/proc/1/cgroup" pid=21042 comm="gnome-session" requested_mask="r" denied_mask="r" fsuid=135 ouid=0
apparmor="DENIED" operation="open" profile="/usr/lib/lightdm/lightdm-guest-session" name="/proc/1/cgroup" pid=21097 comm="indicator-messa" requested_mask="r" denied_mask="r" fsuid=135 ouid=0

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https://bugs.launchpad.net/bugs/1464958

Title:
  chromium-browser does not run in guest account

Status in Chromium Browser:
  Unknown
Status in chromium-browser package in Ubuntu:
  Confirmed
Status in google-chrome-beta package in Ubuntu:
  Confirmed
Status in lightdm package in Ubuntu:
  New

Bug description:
  Description:

  In guest account, start chromium browser shows nothing.  Start with
  command line shows error:

  guest-1qFsXl@home:~$ chromium-browser http://www.google.com
  Check failed: NamespaceUtils::DenySetgroups()

  This used to work for months and found failed for few weeks.

  Version:

  Ubuntu 14.04 LTS
  chromium-browser    43.0.2357.81-0ubuntu0.14.04.1.1
  linux-image-3.13.0-54-generic    3.13.0-54.91
  --- 
  ApportVersion: 2.14.1-0ubuntu3.11
  Architecture: amd64
  Desktop-Session:
   'None'
   'None'
   'None'
  DetectedPlugins:
   
  DistroRelease: Ubuntu 14.04
  EcryptfsInUse: Yes
  Env:
   'None'
   'None'
  Load-Avg-1min: 0.28
  Load-Processes-Running-Percent:   0.2%
  MachineType: To Be Filled By O.E.M. To Be Filled By O.E.M.
  NonfreeKernelModules: nvidia
  Package: chromium-browser 43.0.2357.81-0ubuntu0.14.04.1.1089
  PackageArchitecture: amd64
  ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-3.13.0-54-generic root=UUID=85a7733c-fbc4-49bf-84ce-02be4c5ba907 ro quiet splash vt.handoff=7
  ProcVersionSignature: Ubuntu 3.13.0-54.91-generic 3.13.11-ckt20
  Tags: third-party-packages trusty
  Uname: Linux 3.13.0-54-generic x86_64
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip libvirtd lpadmin plugdev sambashare sudo
  _MarkForUpload: True
  dmi.bios.date: 12/15/2014
  dmi.bios.vendor: American Megatrends Inc.
  dmi.bios.version: P1.50
  dmi.board.name: H97M-ITX/ac
  dmi.board.vendor: ASRock
  dmi.chassis.asset.tag: To Be Filled By O.E.M.
  dmi.chassis.type: 3
  dmi.chassis.vendor: To Be Filled By O.E.M.
  dmi.chassis.version: To Be Filled By O.E.M.
  dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvrP1.50:bd12/15/2014:svnToBeFilledByO.E.M.:pnToBeFilledByO.E.M.:pvrToBeFilledByO.E.M.:rvnASRock:rnH97M-ITX/ac:rvr:cvnToBeFilledByO.E.M.:ct3:cvrToBeFilledByO.E.M.:
  dmi.product.name: To Be Filled By O.E.M.
  dmi.product.version: To Be Filled By O.E.M.
  dmi.sys.vendor: To Be Filled By O.E.M.
  modified.conffile..etc.default.chromium.browser: [deleted]
  mtime.conffile..etc.chromium.browser.default: 2015-01-14T08:39:14.796369

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