Pulseaudio crashes with SIGSEGV on jack server shutdown

Bug #538815 reported by David Henningsson on 2010-03-14
This bug affects 1 person
Affects Status Importance Assigned to Milestone
pulseaudio (Ubuntu)
David Henningsson

Bug Description

Binary package hint: pulseaudio

Ubuntu Lucid, up-to-date

On sink unlinking, existing sink inputs are moved, which in turn calls
a get latency callback, which references the jack client. Therefore,
make sure the sink is unlinked before the client is closed. Failure to
do so might lead to SIGSEGV.

Steps to reproduce:

1. Disable autospawn and kill PA
2. Start jack server
3. Start PA
4. Load module module-jack-sink
5. Start a stream (e g Rythmbox) and run it through the jack sink.
6. Shutdown the jack server. Now PA crashes with SIGSEGV.

Related branches

Changed in pulseaudio (Ubuntu):
assignee: nobody → David Henningsson (diwic)
status: New → In Progress
David Henningsson (diwic) wrote :
Changed in pulseaudio (Ubuntu):
status: In Progress → Fix Committed
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package pulseaudio - 1:0.9.22~0.9.21+stable-queue-32-g8478-0ubuntu15

pulseaudio (1:0.9.22~0.9.21+stable-queue-32-g8478-0ubuntu15) maverick; urgency=low

  * 0093-backport-fixes-stable-queue-head.patch: Backport the following
    changesets from the stable-queue branch:
    + bc7314f (name all threads for /proc/$PID/task/$TID/comm)
    + d519ca4 (prevent crash on jack server shutdown) (LP: #538815)
    + 65f89dc (fix bracketing in pa_rtp_recv())
  * debian/01PulseAudio: modify the ConsoleKit active seat checks in the
    pm-utils hook so that:
    - pre-suspend: all users' sink & source states are stored, then only
      the active seat's sinks and sources are muted
    - post-resume: all users' sink & source pre-suspend states are
    This resolves the issue where users' post-resume sink & source
    states don't correspond with their pre-suspend ones.
    (LP: #569395)
  * debian/01PulseAudio: fix broken quoting and misuse of su -l. Merged
    from lp:~hyperair/pulseaudio/fix-01Pulseaudio-quoting. Thanks,
    Chow Loong Jin! (LP: #572391)
  * debian/control: Update bzr branch for maverick.
 -- Daniel T Chen <email address hidden> Sat, 08 May 2010 11:08:56 -0400

Changed in pulseaudio (Ubuntu):
status: Fix Committed → Fix Released
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