[Bug 772845] New: SIGSEGV when running GST_TRACER examples

GStreamer (GNOME Bugzilla) bugzilla at gnome.org
Thu Oct 13 09:42:04 UTC 2016


https://bugzilla.gnome.org/show_bug.cgi?id=772845

            Bug ID: 772845
           Summary: SIGSEGV when running GST_TRACER examples
    Classification: Platform
           Product: GStreamer
           Version: unspecified
                OS: Linux
            Status: NEW
          Severity: normal
          Priority: Normal
         Component: gstreamer (core)
          Assignee: gstreamer-bugs at lists.freedesktop.org
          Reporter: msb at qtec.com
        QA Contact: gstreamer-bugs at lists.freedesktop.org
     GNOME version: ---

I'm running some of the examples from:
https://cgit.freedesktop.org/gstreamer/gstreamer/tree/docs/design/part-tracing.txt

Because I want to start using the tracer

But I'm frequently (does not happen all the time) getting a segmentation fault
for this one:
GST_DEBUG="GST_TRACER:7" GST_TRACERS="stats;rusage" GST_DEBUG_FILE=trace.log
gst-launch-1.0 fakesrc num-buffers=10 sizetype=fixed ! queue ! fakesink
gst-stats-1.0 trace.log
- print some pipeline stats on exit

root at qt5022-fglrx:~# GST_DEBUG="GST_TRACER:7" GST_TRACERS="stats;rusage"
GST_DEBUG_FILE=trace.log gst-launch-1.0 fakesrc num-buffers=10 sizetype=fixed !
queue ! fakesink
Setting pipeline to PAUSED ...
Pipeline is PREROLLING ...
Pipeline is PREROLLED ...
Setting pipeline to PLAYING ...
New clock: GstSystemClock
Got EOS from element "pipeline0".
Execution ended after 0:00:00.004619717
Setting pipeline to PAUSED ...
Setting pipeline to READY ...
Setting pipeline to NULL ...
Freeing pipeline ...
Caught SIGSEGV
#0  0x00007f059842a72a in waitpid () from /lib/libpthread.so.0
#1  0x00007f0598656128 in g_on_error_stack_trace ()
#2  0x0000000000403d8f in ?? ()
#3  <signal handler called>
#4  0x00007f05986992e4 in ?? () from /usr/lib/libglib-2.0.so.0
#5  0x00007f059869a733 in g_slice_free_chain_with_offset ()
#6  0x00007f0598c31305 in ?? () from /usr/lib/libgstreamer-1.0.so.0
#7  0x00007f0598bbd295 in gst_deinit () from /usr/lib/libgstreamer-1.0.so.0
#8  0x00000000004035d3 in ?? ()
#9  0x00007f059809d730 in __libc_start_main () from /lib/libc.so.6
#10 0x0000000000403c19 in ?? ()

The seg fault does not seem to happen if I remove either of these:
GST_TRACERS="stats;rusage" GST_DEBUG_FILE=trace.log

The other examples seem to work fine

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