[Bug 753902] New: gstgl: make check fails for NVIDIA driver

[GStreamer (GNOME Bugzilla)]

https://bugzilla.gnome.org/show_bug.cgi?id=753902

            Bug ID: 753902
           Summary: gstgl: make check fails for NVIDIA driver
    Classification: Platform
           Product: GStreamer
           Version: git master
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gst-plugins-bad
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: vineeth.tm at samsung.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

When i run make check for bad plugins, the gl elements fail with the below
error

*** Error in
`/home/vineethtm/gst/master/gst-plugins-bad/tests/check/libs/.libs/lt-gstglcontext':
double free or corruption (fasttop): 0x43200468 ***
*** Error in
`/home/vineethtm/gst/master/gst-plugins-bad/tests/check/libs/.libs/lt-gstglcontext':
double free or corruption (fasttop): 0x43200468 ***


This happens only with NVIDIA driver(version 346.82. It happened with older
version 340.76 as well). If i change to Nouveau driver, it doesn't give any
issue.

This seems to happen only with 
  gst_gl_context_create (context, 0, &error);
when 0/NULL is passed as the shared context.


Lets take example of test_share in gstglcontext.c test file

I removed everything else and just ran

GST_START_TEST (test_share)
{
  GstGLContext *context;
  GstGLWindow *window;
  GError *error = NULL;

  context = gst_gl_context_new (display);

  window = gst_gl_window_new (display);
  gst_gl_context_set_window (context, window);

  gst_gl_context_create (context, 0, &error);

  gst_object_unref (window);
  gst_object_unref (context);
}

This gives the same failure.
If i just comment the line   gst_gl_context_create (context, 0, &error);, then
it does not fail.
It does not fail even if i comment either of the window/context unref
functions. But that will cause memory leak i guess.

I debugged a bit. but could not find anything.
It is using context_glx and window_x11

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