pulsesink: Segfault in pulsesink.c:2077 gst_pulsesink_pad_acceptcaps()

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Hi Erik and thanks for your patch!

Could you give a good test example on how to reproduce the crash? This is going to be necessary if you want it to reach a stable release of Ubuntu. See https://wiki.ubuntu.com/StableReleaseUpdates for details.

Unfortunately (or maybe fortunately) I can only reproduce the problem using a some of our closed source code, and even then it's a relatively uncommon crash. I only had a small amount of time playing around trying to trigger the bug in a minimal test, but were unable to do so.

I understand that this might disqualify it from getting into the stable release. If someone else has the same issue they'll hopefully find this bug and can build a fixed version of their own, just like we do internally.

it's possible to SRU with a testcase stating that the bug is hard to trigger and that testers should ensure things keep working without regression

The patch commited upstream:
http://cgit.freedesktop.org/gstreamer/gst-plugins-good/patch/?id=d2fdc26c38acc243ba7912f4db17f63fe0d54632

is slightly different ... is there any chance you could test it/make it apply to the current gst-plugins-good version (seems to not apply in its current form to 0.10.31)

Updated patch. Tested it and it also solves the crash we see.

This bug was fixed in the package gst-plugins-good0.10 - 0.10.31-3ubuntu3

---------------
gst-plugins-good0.10 (0.10.31-3ubuntu3) raring; urgency=low

  * debian/patches/git_new_v4l_building.patch: "v4l2: fix build with
    recent kernels, the v4l2_buffer input field was removed"
 -- Sebastien Bacher <email address hidden> Fri, 16 Nov 2012 15:06:05 +0100

Hello Erik, or anyone else affected,

Accepted gst-plugins-good0.10 into quantal-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/gst-plugins-good0.10/0.10.31-3ubuntu1.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please change the bug tag from verification-needed to verification-done. If it does not, change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Hello Erik, or anyone else affected,

Accepted gst-plugins-good0.10 into precise-proposed. The package will build now and be available at http://launchpad.net/ubuntu/+source/gst-plugins-good0.10/0.10.31-1ubuntu1.1 in a few hours, and then in the -proposed repository.

Please help us by testing this new package. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Your feedback will aid us getting this update out to other Ubuntu users.

If this package fixes the bug for you, please change the bug tag from verification-needed to verification-done. If it does not, change the tag to verification-failed. In either case, details of your testing will help us make a better decision.

Further information regarding the verification process can be found at https://wiki.ubuntu.com/QATeam/PerformingSRUVerification . Thank you in advance!

Erik,

Are you now running the -proposed versions of gst-plugins-good0.10? Can you verify that they fix the issue? We need someone to confirm this before the packages can be rolled out to all users.

I'd like to fix a different bug in this package in the stable releases and it's preferable that we finish this fix up before doing that.

Cheers.

Hi,

Sorry for the lack of feedback!

I have tested the precise-proposed version of gstreamer0.10-pulseaudio and I can verify that is solves the crash we see with the vanilla version.

Cheers.

The verification of this Stable Release Update has completed successfully and the package has now been released to -updates. Subsequently, the Ubuntu Stable Release Updates Team is being unsubscribed and will not receive messages about this bug report. In the event that you encounter a regression using the package from -updates please report a new bug using ubuntu-bug and tag the bug report regression-update so we can easily find any regresssions.

This bug was fixed in the package gst-plugins-good0.10 - 0.10.31-1ubuntu1.1

---------------
gst-plugins-good0.10 (0.10.31-1ubuntu1.1) precise-proposed; urgency=low

  * debian/patches/git_ring_buffer_null_check.patch: segfault fix,
    thanks Erik Botö for backporting and testing the change (lp: #1068155)
 -- Sebastien Bacher <email address hidden> Fri, 16 Nov 2012 12:51:49 +0100

This bug was fixed in the package gst-plugins-good0.10 - 0.10.31-3ubuntu1.1

---------------
gst-plugins-good0.10 (0.10.31-3ubuntu1.1) quantal-proposed; urgency=low

  * debian/patches/git_ring_buffer_null_check.patch: segfault fix,
    thanks Erik Botö for backporting and testing the change (lp: #1068155)
 -- Sebastien Bacher <email address hidden> Fri, 16 Nov 2012 12:51:49 +0100