[gstreamer-bugs] [Bug 583378] New: libgstpython.so causes a segfault

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gst-python | Ver: git
           Summary: libgstpython.so causes a segfault
           Product: GStreamer
           Version: git
          Platform: Other
        OS/Version: Linux
            Status: UNCONFIRMED
          Severity: normal
          Priority: Normal
         Component: gst-python
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: n770galaxy at gmail.com
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: Unspecified
   GNOME milestone: Unspecified


In the following circumstances libgstpython.so causes a segfault.

- delete the registry
- run python
- import pgm (pigment)

I've been able to reproduce it also with gst-inspect in another scenario
different than desktop.

In the pigment case I've got the following backtrace:

#0  0x00007fb5b9fc1dd9 in plugin_init (plugin=0x1518770) at
gstpythonplugin.c:355
#1  0x00007fb5cc8efd86 in gst_plugin_register_func (plugin=0x1518770,
desc=0x7fb5ba1c41a0, user_data=0x0) at gstplugin.c:416
#2  0x00007fb5cc8f1489 in gst_plugin_load_file (filename=0x154e790
"/home/jep/.install/lib/gstreamer-0.10/libgstpython.so", error=0x0) at
gstplugin.c:629
#3  0x00007fb5cc8faacd in gst_registry_scan_path_level (registry=0x140b850,
path=0x7fb5cc927508 "/home/jep/.install/lib/gstreamer-0.10", level=10)
    at gstregistry.c:916
#4  0x00007fb5cc8fac24 in gst_registry_scan_path (registry=0x140b850,
path=0x7fb5cc927508 "/home/jep/.install/lib/gstreamer-0.10") at
gstregistry.c:952
#5  0x00007fb5cc8b0b34 in scan_and_update_registry (default_registry=0x140b850,
registry_file=0x140c000 "/home/jep/.gstreamer-0.10/registry.x86_64.bin", 
    write_changes=1, error=0x0) at gst.c:724
#6  0x00007fb5cc8b0d8f in ensure_current_registry (error=0x0) at gst.c:786
#7  0x00007fb5cc8b284e in init_post (context=<value optimized out>,
group=<value optimized out>, data=<value optimized out>, error=0x0) at
gst.c:1100
#8  0x00007fb5cb83b020 in g_option_context_parse () from
/usr/lib/libglib-2.0.so.0
#9  0x00007fb5cc8b1f8d in gst_init_check (argc=0x7fffd6d28e8c,
argv=0x7fffd6d28e80, err=0x0) at gst.c:435
#10 0x00007fb5ccfb29ef in pgm_init_check (argc=0x7fffd6d28e8c,
argv=0x7fffd6d28e80) at ./pgm.c:226
#11 0x00007fb5cd1ecf57 in init_pgm () at pgmmodule.c:62

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fb5ced0d6f0 (LWP 26549)]
0x00007fb5b9fc1dd9 in plugin_init (plugin=0x1518770) at gstpythonplugin.c:355
355         state = pyg_gil_state_ensure ();

0x00007fb5b9fc1dc8 <plugin_init+296>:   xor    %eax,%eax
0x00007fb5b9fc1dca <plugin_init+298>:   callq  0x7fb5b9fc1518
<gst_debug_log at plt>
0x00007fb5b9fc1dcf <plugin_init+303>:   mov    0x202202(%rip),%rax        #
0x7fb5ba1c3fd8 <__JCR_LIST__+664>
0x00007fb5b9fc1dd6 <plugin_init+310>:   mov    (%rax),%rax
0x00007fb5b9fc1dd9 <plugin_init+313>:   callq  *0x160(%rax)
0x00007fb5b9fc1ddf <plugin_init+319>:   movl   $0x0,0x24(%rsp)

Segfault at +313, rax is 0 then I suspect it's something related to null
pointer.


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