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[Launchpad Bug Tracker <1436162@xxxxxxxxxxxxxxxxxx>]

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

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

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https://bugs.launchpad.net/bugs/1436162

Title:
  [pulsesink] abort at pthread_mutex_unlock(&m->mutex) == 0' failed at
  pulsecore/mutex-posix.c:118, function pa_mutex_unlock() with libc 2.21

Status in glibc package in Ubuntu:
  Confirmed
Status in gst-plugins-good1.0 package in Ubuntu:
  Confirmed
Status in pulseaudio package in Ubuntu:
  Confirmed

Bug description:
  current build number: 146
  device name: m75
  channel: ubuntu-touch/vivid-proposed
  last update: 2015-03-24 13:57:03
  version version: 146

  After libc 2.21 landed, pulsesink fails constantly when pausing or
  seeking the active pipeline.

  Abort message:
  Assertion 'pthread_mutex_unlock(&m->mutex) == 0' failed at pulsecore/mutex-posix.c:118, function pa_mutex_unlock(). Aborting.

  This is basically happens when it tries to unlock a mutex that is
  already unlocked.

  This issue doesn't happen with libc 2.19.

  To reproduce the issue:
  GST_DEBUG=*pulse*:5 gst-launch-1.0 playbin uri=file:///tmp/foobar.mp3

  Then when playing, just hit control+c, which will then pause the
  pipeline, causing the crash. The crash happens with most of the times
  you pause or seek the pipeline.

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