[Bug 1094218] Re: lsb_release crashed with IOError in getstatusoutput(): [Errno 10] No child processes

[Kevin Normoyle]

I put a print in lsb_release.py to see what the dpkg-query command is

then did 
ipython
 import lsb_release
 lsb_release.check_modules_installed()
 
the print says:
dpkg-query -f '${Version} ${Provides}
' -W lsb-core lsb-cxx lsb-graphics lsb-desktop lsb-qt4 lsb-languages lsb-multimedia lsb-printing 2>/dev/null

(yes there's a \n in the string ..see the def check_modules_installed() above)
 

here's commands.getoutput that's executing the dpkg-query. So somehow
the pipe is closing before it's being told to by pipe.close?

def getoutput(cmd):
    """Return output (stdout or stderr) of executing cmd in a shell."""
    return getstatusoutput(cmd)[1]


# Ditto but preserving the exit status.
# Returns a pair (sts, output)
#
def getstatusoutput(cmd):
    """Return (status, output) of executing cmd in a shell."""
    import os
    pipe = os.popen('{ ' + cmd + '; } 2>&1', 'r')
    text = pipe.read()
    sts = pipe.close()
    if sts is None: sts = 0
    if text[-1:] == '\n': text = text[:-1]
    return sts, text

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https://bugs.launchpad.net/bugs/1094218

Title:
  lsb_release crashed with IOError in getstatusoutput(): [Errno 10] No
  child processes

Status in “lsb” package in Ubuntu:
  Confirmed

Bug description:
  Add-ons: globalmenu at ubuntu.com:2.0.4,langpack-de at firefox.mozilla.org:11.0,langpack-en-GB at firefox.mozilla.org:11.0,langpack-en-ZA at firefox.mozilla.org:11.0,langpack-es-AR at firefox.mozilla.org:11.0,langpack-es-CL at firefox.mozilla.org:11.0,langpack-es-ES at firefox.mozilla.org:11.0,langpack-es-MX at firefox.mozilla.org:11.0,langpack-pt-BR at firefox.mozilla.org:11.0,langpack-pt-PT at firefox.mozilla.org:11.0,langpack-zh-CN at firefox.mozilla.org:11.0,ubufox at ubuntu.com:2.0.1,{972ce4c6-7e08-4474-a285-3208198ce6fd}:11.0
  BuildID: 20120313141405
  CrashTime: 1356689682
  EMCheckCompatibility: true
  FramePoisonBase: 00000000f0dea000
  FramePoisonSize: 4096
  InstallTime: 1356685662
  Notes: OpenGL: X.Org R300 Project -- Gallium 0.4 on ATI RV515 -- 2.1 Mesa 8.0.2 -- texture_from_pixmap

  ProductID: {ec8030f7-c20a-464f-9b0e-13a3a9e97384}
  ProductName: Firefox
  ReleaseChannel: release
  SecondsSinceLastCrash: 18
  StartupTime: 1356689673
  Theme: classic/1.0
  Throttleable: 1
  URL: http://ubuntuforums.org/private.php?s=&pp=&folderid=0
  Vendor: Mozilla
  Version: 11.0

  This report also contains technical information about the state of the
  application when it crashed.

  ProblemType: CrashDistroRelease: Ubuntu 12.04
  Package: lsb-release 4.0-0ubuntu20
  ProcVersionSignature: Ubuntu 3.2.0-20.33-generic-pae 3.2.12
  Uname: Linux 3.2.0-20-generic-pae i686
  ApportVersion: 1.95-0ubuntu1
  Architecture: i386
  Date: Fri Dec 28 09:42:36 2012
  ExecutablePath: /usr/bin/lsb_release
  InterpreterPath: /usr/bin/python2.7
  PackageArchitecture: all
  ProcCmdline: /usr/bin/python /usr/bin/lsb_release -a
  ProcEnviron:
   TERM=linux
   PATH=(custom, no user)
  PythonArgs: ['/usr/bin/lsb_release', '-a']SourcePackage: lsb
  Title: lsb_release crashed with IOError in getstatusoutput(): [Errno 10] No child processes
  UpgradeStatus: No upgrade log present (probably fresh install)
  UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo

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