[Bug 1088023] [NEW] aptitude does not run in background

[Dan Kegel]

Public bug reported:

On Ubuntu 12.04.1, with apt-0.8.16~exp12ubuntu10.6

When I run a script that does
   ...
   sudo apt-get -y install cmake

in the background, apt-get hangs.  ps -augx | grep apt shows

root     20603  0.9  0.4  38000 29044 pts/1    T    10:14   0:01 apt-get
-y install cmake

Attaching with gdb and doing 'bt' says:

#0  0xb775b1b2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
#1  0xb74473c3 in __read_nocancel () at ../sysdeps/unix/syscall-template.S:82
#2  0xb76ef403 in pkgDPkgPM::DoStdin(int) ()
   from /usr/lib/i386-linux-gnu/libapt-pkg.so.4.12
#3  0xb76f809e in pkgDPkgPM::Go(int) ()
   from /usr/lib/i386-linux-gnu/libapt-pkg.so.4.12
#4  0xb767e94a in pkgPackageManager::DoInstallPostFork(int) ()
   from /usr/lib/i386-linux-gnu/libapt-pkg.so.4.12
#5  0xb767e9b0 in pkgPackageManager::DoInstall(int) ()
   from /usr/lib/i386-linux-gnu/libapt-pkg.so.4.12

Googling for DoStdin found that this has an upstream bug report already:

http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=555632

Workaround is to redirect stdin.

** Affects: apt (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1088023

Title:
  aptitude does not run in background

Status in “apt” package in Ubuntu:
  New

Bug description:
  On Ubuntu 12.04.1, with apt-0.8.16~exp12ubuntu10.6

  When I run a script that does
     ...
     sudo apt-get -y install cmake

  in the background, apt-get hangs.  ps -augx | grep apt shows

  root     20603  0.9  0.4  38000 29044 pts/1    T    10:14   0:01 apt-
  get -y install cmake

  Attaching with gdb and doing 'bt' says:

  #0  0xb775b1b2 in _dl_sysinfo_int80 () from /lib/ld-linux.so.2
  #1  0xb74473c3 in __read_nocancel () at ../sysdeps/unix/syscall-template.S:82
  #2  0xb76ef403 in pkgDPkgPM::DoStdin(int) ()
     from /usr/lib/i386-linux-gnu/libapt-pkg.so.4.12
  #3  0xb76f809e in pkgDPkgPM::Go(int) ()
     from /usr/lib/i386-linux-gnu/libapt-pkg.so.4.12
  #4  0xb767e94a in pkgPackageManager::DoInstallPostFork(int) ()
     from /usr/lib/i386-linux-gnu/libapt-pkg.so.4.12
  #5  0xb767e9b0 in pkgPackageManager::DoInstall(int) ()
     from /usr/lib/i386-linux-gnu/libapt-pkg.so.4.12

  Googling for DoStdin found that this has an upstream bug report
  already:

  http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=555632

  Workaround is to redirect stdin.

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