[gstreamer-bugs] [Bug 530317] New: GType registration error - race condition when parallel creation of pipelines

[GStreamer (bugzilla.gnome.org)]

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  GStreamer | gstreamer (core) | Ver: 0.10.18
           Summary: GType registration error - race condition when parallel
                    creation of pipelines
           Product: GStreamer
           Version: 0.10.18
          Platform: Other
        OS/Version: All
            Status: UNCONFIRMED
          Severity: critical
          Priority: Normal
         Component: gstreamer (core)
        AssignedTo: gstreamer-bugs at lists.sourceforge.net
        ReportedBy: mb at novanotio.es
         QAContact: gstreamer-bugs at lists.sourceforge.net
     GNOME version: 2.15/2.16
   GNOME milestone: Unspecified


Steps to reproduce:
1. Two threads(pthreads) create each a pipeline at the "same time"
2. Gstreamer try to register "GstClock" in Glib
3. This was produced with Glib 2.16.3


Stack trace:
(testlib:32651): GLib-GObject-WARNING **: cannot register existing type
`GstClock'

(testlib:32651): GLib-GObject-WARNING **: gtype.c:3368: type id `0' is invalid

(testlib:32651): GLib-GObject-WARNING **: can't peek value table for type
`<invalid>' which is not currently referenced

(testlib:32651): GLib-GObject-WARNING **: gvalue.c:96: cannot initialize GValue
with type `(null)', this type has no GTypeValueTable implementation

(testlib:32651): GLib-GObject-WARNING **: gtype.c:3368: type id `0' is invalid

(testlib:32651): GLib-GObject-WARNING **: can't peek value table for type
`<invalid>' which is not currently referenced

Core was generated by `./testlib'.
Program terminated with signal 11, Segmentation fault.
#0  0xb7ec8316 in gst_structure_set_valist (structure=0xb5f0dcd0,
    fieldname=0xb7ef4a77 "clock", varargs=0xb71051c8 "") at gststructure.c:527
527         G_VALUE_COLLECT (&field.value, varargs, 0, &err);
(gdb) bt
#0  0xb7ec8316 in gst_structure_set_valist (structure=0xb5f0dcd0,
    fieldname=0xb7ef4a77 "clock", varargs=0xb71051c8 "") at gststructure.c:527
#1  0xb7eca2e2 in gst_structure_new_valist (
    name=0xb7ef967a "GstMessageClockProvide", firstfield=0xb7ef4a77 "clock",
    varargs=0xb71051c8 "") at gststructure.c:242
#2  0xb7eca352 in gst_structure_new (name=0x0, firstfield=0xb7ef4a77 "clock")
    at gststructure.c:210
#3  0xb7eadf9b in gst_message_new_clock_provide (src=0x80db140, clock=0x0,
    ready=1) at gstmessage.c:541
#4  0xb7e8b937 in gst_bin_add_func (bin=0x80db050, element=0x80db140)
    at gstbin.c:915
#5  0xb7e88985 in gst_bin_add (bin=0x80db050, element=0x80db140)
    at gstbin.c:1046
#6  0xb7ed699c in gst_bin_add_many (bin=0x80db050, element_1=0x80db140)
    at gstutils.c:2212
#7  0x0806875e in playerSimpleCreate (fP=0x80dc080, noPort1=0, noPort2=0,
    input=0x80dc1d0 "/home/demo/media/videos/MOV01250.MPG", bitrate=0,
    sourceType=0x80dc3e0 "filesrc", nada2=0) at playerSimple.c:411
#8  0x08056fe4 in flowPipelineCreate (flowP=0x80dc080) at vicoFlow.c:150
#9  0x0805733e in vicoFlowInit (flowP=0x80dc080) at vicoFlow.c:202
#10 0x0805634a in vicoRun (arg=0x80dc080) at vico.c:609
#11 0xb7bfe46b in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#12 0xb7b826de in clone () from /lib/tls/i686/cmov/libc.so.6
(gdb)                                                        

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