• Thibault Saunier's avatar
    decodebin2: Make sure to remove probes when free GstDecodeGroup · a19ad41a
    Thibault Saunier authored
    Nothing guarantees that when we free a DecodeGroup the demuxer pads
    have already been freed and thus the probes have been removed meaning
    that in some case it is possible that the pad probes still get called
    *after* the GstDecodeGroup is freed, leading to segfaults (as we use
    the freed group in that function).
    
    Sample stack trace when that happens:
    
      #0  sink_pad_query_probe (pad=pad@entry=0x7fe654027180, info=info@entry=0x7ffe433bf270, user_data=0x7fe668076f80) at ../subprojects/gst-plugins-base/gst/playback/gstdecodebin2.c:3004
      3004          if (last_group->reqpads) {
      [Current thread is 1 (Thread 0x7fe69d8a0880 (LWP 24366))]
      Missing separate debuginfos, use: dnf debuginfo-install elfutils-libelf-0.176-1.fc29.x86_64 elfutils-libs-0.176-1.fc29.x86_64 libXcursor-1.1.15-4.fc29.x86_64 libXi-1.7.9-8.fc29.x86_64 libgpg-error-1.33-1.fc29.x86_64 libvpx-1.7.0-7.fc29.x86_64 soundtouch-2.1.1-1.fc29.x86_64
      (gdb) bt
      #0  0x00007fe68f7f3430 in sink_pad_query_probe (pad=pad@entry=0x7fe654027180 [GstMultiQueuePad], info=info@entry=0x7ffe433bf270, user_data=0x7fe668076f80) at ../subprojects/gst-plugins-base/gst/playback/gstdecodebin2.c:3004
      #1  0x00007fe69e79815e in probe_hook_marshal (hook=0x7fe63003a840, data=0x7ffe433bf160) at ../subprojects/gstreamer/gst/gstpad.c:3565
      #2  0x00007fe69e5774cc in g_hook_list_marshal (hook_list=hook_list@entry=0x7fe654027218, may_recurse=may_recurse@entry=1, marshaller=marshaller@entry=0x7fe69e797d40 <probe_hook_marshal>, data=data@entry=0x7ffe433bf160) at ghook.c:672
      #3  0x00007fe69e797823 in do_probe_callbacks (pad=pad@entry=0x7fe654027180 [GstMultiQueuePad], info=info@entry=0x7ffe433bf270, defaultval=defaultval@entry=GST_FLOW_OK) at ../subprojects/gstreamer/gst/gstpad.c:3727
      #4  0x00007fe69e7a25fd in gst_pad_peer_query (pad=pad@entry=0x7fe654027180 [GstMultiQueuePad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4194
      #5  0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0x7fe654027180 [GstMultiQueuePad], data=data@entry=0x7ffe433bf3c0) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #6  0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x7fe6540273d0 [GstPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433bf3c0) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #7  0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0x7fe6540273d0 [GstPad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #8  0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0x7fe6540273d0 [GstPad], parent=0x7fe61c035e00 [GstMultiQueue], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #9  0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x7fe6540273d0 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #10 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x7fe648019620 [GstPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #11 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0x7fe648019620 [GstPad], data=data@entry=0x7ffe433bf6f0) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #12 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x7fe62000a9b0 [GstPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433bf6f0) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #13 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=pad@entry=0x7fe62000a9b0 [GstPad], parent=<optimized out>, query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #14 0x00007fe69e0594d6 in gst_video_decoder_src_query_default (dec=0x7fe63001e290 [GstVP8Dec], query=0x7fe67803f140) at ../subprojects/gst-plugins-base/gst-libs/gst/video/gstvideodecoder.c:1684
      #15 0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0x7fe62000a9b0 [GstPad], parent=0x7fe63001e290 [GstVP8Dec], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #16 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x7fe62000a9b0 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #17 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x7fe630054300 [GstProxyPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #18 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0x7fe630054300 [GstProxyPad], data=data@entry=0x7ffe433bfa80) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #19 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x7fe660047810 [GstDecodePad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433bfa80) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #20 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0x7fe660047810 [GstDecodePad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #21 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x7fe660047810 [GstDecodePad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #22 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x7fe654076cf0 [GstProxyPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #23 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0x7fe654076cf0 [GstProxyPad], data=data@entry=0x7ffe433bfce0) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #24 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x7fe668037720 [GstGhostPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433bfce0) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #25 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0x7fe668037720 [GstGhostPad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #26 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x7fe668037720 [GstGhostPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #27 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0xa762c0 [GstPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #28 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0xa762c0 [GstPad], data=data@entry=0x7ffe433bff40) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #29 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0xa76510 [GstPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433bff40) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #30 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=pad@entry=0xa76510 [GstPad], parent=parent@entry=0x7fe67002b240 [GstQueue], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #31 0x00007fe68f7bd321 in gst_queue_handle_src_query (pad=0xa76510 [GstPad], parent=0x7fe67002b240 [GstQueue], query=0x7fe67803f140) at ../subprojects/gstreamer/plugins/elements/gstqueue.c:1619
      #32 0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0xa76510 [GstPad], parent=0x7fe67002b240 [GstQueue], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #33 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0xa76510 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #34 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0xa770a0 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #35 0x00007fe69e118c6b in gst_base_transform_default_query (trans=0xa6f4d0 [GstVideoConvert], direction=GST_PAD_SRC, query=0x7fe67803f140) at ../subprojects/gstreamer/libs/gst/base/gstbasetransform.c:1557
      #36 0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0xa772f0 [GstPad], parent=0xa6f4d0 [GstVideoConvert], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #37 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0xa772f0 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #38 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0xa779e0 [GstPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #39 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0xa779e0 [GstPad], data=data@entry=0x7ffe433c0550) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #40 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0xa77c30 [GstPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c0550) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #41 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=pad@entry=0xa77c30 [GstPad], parent=parent@entry=0xa7f800 [GstDeinterlace], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #42 0x00007fe68c0449a7 in gst_deinterlace_src_query (pad=0xa77c30 [GstPad], parent=0xa7f800 [GstDeinterlace], query=0x7fe67803f140) at ../subprojects/gst-plugins-good/gst/deinterlace/gstdeinterlace.c:3265
      #43 0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0xa77c30 [GstPad], parent=0xa7f800 [GstDeinterlace], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #44 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0xa77c30 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #45 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0xa76760 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #46 0x00007fe69e118c6b in gst_base_transform_default_query (trans=0xa46860 [GstFramePositioner], direction=GST_PAD_SRC, query=0x7fe67803f140) at ../subprojects/gstreamer/libs/gst/base/gstbasetransform.c:1557
      #47 0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0xa769b0 [GstPad], parent=0xa46860 [GstFramePositioner], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #48 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0xa769b0 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #49 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0xa76c00 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #50 0x00007fe69e118c6b in gst_base_transform_default_query (trans=0xa7eb20 [GstVideoScale], direction=GST_PAD_SRC, query=0x7fe67803f140) at ../subprojects/gstreamer/libs/gst/base/gstbasetransform.c:1557
      #51 0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0xa76e50 [GstPad], parent=0xa7eb20 [GstVideoScale], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #52 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0xa76e50 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #53 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0xa77540 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #54 0x00007fe69e118c6b in gst_base_transform_default_query (trans=0xa6f980 [GstVideoRate], direction=GST_PAD_SRC, query=0x7fe67803f140) at ../subprojects/gstreamer/libs/gst/base/gstbasetransform.c:1557
      #55 0x00007fe68f7369f0 in gst_video_rate_query (trans=0xa6f980 [GstVideoRate], direction=GST_PAD_SRC, query=0x7fe67803f140) at ../subprojects/gst-plugins-base/gst/videorate/gstvideorate.c:1115
      #56 0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0xa77790 [GstPad], parent=0xa6f980 [GstVideoRate], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #57 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0xa77790 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #58 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0xa82120 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #59 0x00007fe69e118c6b in gst_base_transform_default_query (trans=0xa172a0 [GstCapsFilter], direction=GST_PAD_SRC, query=0x7fe67803f140) at ../subprojects/gstreamer/libs/gst/base/gstbasetransform.c:1557
      #60 0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0xa82370 [GstPad], parent=0xa172a0 [GstCapsFilter], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #61 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0xa82370 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #62 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0xa44c70 [GstProxyPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #63 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0xa44c70 [GstProxyPad], data=data@entry=0x7ffe433c13a0) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #64 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x7fe6700271e0 [GstGhostPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c13a0) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #65 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0x7fe6700271e0 [GstGhostPad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #66 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x7fe6700271e0 [GstGhostPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #67 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0xa447b0 [GstProxyPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #68 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0xa447b0 [GstProxyPad], data=data@entry=0x7ffe433c1600) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #69 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x7fe670026f60 [GstGhostPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c1600) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #70 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0x7fe670026f60 [GstGhostPad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #71 0x00007fe68f54bb18 in ghostpad_query_function (ghostpad=0x7fe670026f60 [GstGhostPad], parent=0xa2a870 [NleSource], query=0x7fe67803f140) at ../subprojects/gst-editing-services/plugins/nle/nleghostpad.c:556
      #72 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x7fe670026f60 [GstGhostPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #73 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x7fe61c00ab30 [GstGhostPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #74 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0x7fe61c00ab30 [GstGhostPad], data=data@entry=0x7ffe433c18c0) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #75 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x7fe6680ccab0 [GstProxyPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c18c0) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #76 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0x7fe6680ccab0 [GstProxyPad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #77 0x00007fe68f54b6a9 in internalpad_query_function (internal=0x7fe6680ccab0 [GstProxyPad], parent=0x7fe61c00ab30 [GstGhostPad], query=0x7fe67803f140) at ../subprojects/gst-editing-services/plugins/nle/nleghostpad.c:448
      #78 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x7fe6680ccab0 [GstProxyPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #79 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x7fe66800e510 [GESSmartMixerPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #80 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0x7fe66800e510 [GESSmartMixerPad], data=data@entry=0x7ffe433c1b80) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #81 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x7fe6680cc5f0 [GstProxyPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c1b80) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #82 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0x7fe6680cc5f0 [GstProxyPad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #83 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x7fe6680cc5f0 [GstProxyPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #84 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x7fe66805ee60 [GstGhostPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #85 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0x7fe66805ee60 [GstGhostPad], data=data@entry=0x7ffe433c1de0) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #86 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x7fe654077d90 [GstProxyPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c1de0) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #87 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0x7fe654077d90 [GstProxyPad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #88 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x7fe654077d90 [GstProxyPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #89 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x7fe654027ac0 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #90 0x00007fe69e118c6b in gst_base_transform_default_query (trans=0x7fe6680c71d0 [GstVideoConvert], direction=GST_PAD_SRC, query=0x7fe67803f140) at ../subprojects/gstreamer/libs/gst/base/gstbasetransform.c:1557
      #91 0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0x7fe654026a90 [GstPad], parent=0x7fe6680c71d0 [GstVideoConvert], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #92 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x7fe654026a90 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #93 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x7fe6680cc850 [GstProxyPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #94 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0x7fe6680cc850 [GstProxyPad], data=data@entry=0x7ffe433c22d0) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #95 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x7fe6680374a0 [GstGhostPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c22d0) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #96 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0x7fe6680374a0 [GstGhostPad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #97 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x7fe6680374a0 [GstGhostPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #98 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x7fe6680c7e20 [GstCompositorPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #99 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0x7fe6680c7e20 [GstCompositorPad], data=data@entry=0x7ffe433c2530) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #100 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0xa24170 [GstAggregatorPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c2530) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #101 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0xa24170 [GstAggregatorPad], parent=<optimized out>, query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #102 0x00007fe69e0e5512 in gst_aggregator_default_src_query (self=0xa21e90 [GstCompositor], query=0x7fe67803f140) at ../subprojects/gstreamer/libs/gst/base/gstaggregator.c:1909
      #103 0x00007fe69e0547be in gst_video_aggregator_src_query (agg=0xa21e90 [GstCompositor], query=0x7fe67803f140) at ../subprojects/gst-plugins-base/gst-libs/gst/video/gstvideoaggregator.c:2022
      #104 0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0xa24170 [GstAggregatorPad], parent=0xa21e90 [GstCompositor], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #105 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0xa24170 [GstAggregatorPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #106 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x9aac10 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #107 0x00007fe69e118c6b in gst_base_transform_default_query (trans=0xa28280 [GstIdentity], direction=GST_PAD_SRC, query=0x7fe67803f140) at ../subprojects/gstreamer/libs/gst/base/gstbasetransform.c:1557
      #108 0x00007fe68f79dfc4 in gst_identity_query (base=0xa28280 [GstIdentity], direction=GST_PAD_SRC, query=0x7fe67803f140) at ../subprojects/gstreamer/plugins/elements/gstidentity.c:957
      #109 0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0x9aae60 [GstPad], parent=0xa28280 [GstIdentity], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #110 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x9aae60 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #111 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x99cc40 [GstProxyPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #112 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0x99cc40 [GstProxyPad], data=data@entry=0x7ffe433c2c00) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #113 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x9aee40 [GstGhostPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c2c00) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #114 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0x9aee40 [GstGhostPad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #115 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x9aee40 [GstGhostPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #116 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x99d100 [GstProxyPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #117 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0x99d100 [GstProxyPad], data=data@entry=0x7ffe433c2e60) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #118 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x9af0c0 [GstGhostPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c2e60) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #119 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0x9af0c0 [GstGhostPad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #120 0x00007fe68f54bb18 in ghostpad_query_function (ghostpad=0x9af0c0 [GstGhostPad], parent=0x99ce70 [NleOperation], query=0x7fe67803f140) at ../subprojects/gst-editing-services/plugins/nle/nleghostpad.c:556
      #121 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x9af0c0 [GstGhostPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #122 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x99c2c0 [GstProxyPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #123 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0x99c2c0 [GstProxyPad], data=data@entry=0x7ffe433c3120) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #124 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x9ae1c0 [GstGhostPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c3120) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #125 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0x9ae1c0 [GstGhostPad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #126 0x00007fe68f54bb18 in ghostpad_query_function (ghostpad=0x9ae1c0 [GstGhostPad], parent=0xa16290 [NleComposition], query=0x7fe67803f140) at ../subprojects/gst-editing-services/plugins/nle/nleghostpad.c:556
      #127 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x9ae1c0 [GstGhostPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #128 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x9aa080 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #129 0x00007fe69e118c6b in gst_base_transform_default_query (trans=0xa165a0 [GstCapsFilter], direction=GST_PAD_SRC, query=0x7fe67803f140) at ../subprojects/gstreamer/libs/gst/base/gstbasetransform.c:1557
      #130 0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0x9aa9c0 [GstPad], parent=0xa165a0 [GstCapsFilter], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #131 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x9aa9c0 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #132 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x99c9e0 [GstProxyPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #133 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0x99c9e0 [GstProxyPad], data=data@entry=0x7ffe433c3670) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #134 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x9aebc0 [GstGhostPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c3670) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #135 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0x9aebc0 [GstGhostPad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #136 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x9aebc0 [GstGhostPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #137 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x99d820 [GstProxyPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #138 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0x99d820 [GstProxyPad], data=data@entry=0x7ffe433c38d0) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #139 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x9af840 [GstGhostPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c38d0) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #140 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0x9af840 [GstGhostPad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #141 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x9af840 [GstGhostPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #142 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x7fe6780247d0 [GstPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #143 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0x7fe6780247d0 [GstPad], data=data@entry=0x7ffe433c3b30) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #144 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x7fe684032780 [GstTeePad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c3b30) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #145 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0x7fe684032780 [GstTeePad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #146 0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0x7fe684032780 [GstTeePad], parent=0x7383f0 [GstTee], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #147 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x7fe684032780 [GstTeePad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #148 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x7fe670026060 [GstGhostPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #149 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0x7fe670026060 [GstGhostPad], data=data@entry=0x7ffe433c3e60) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #150 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x99dce0 [GstProxyPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c3e60) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #151 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0x99dce0 [GstProxyPad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #152 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x99dce0 [GstProxyPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #153 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0xa8d6b0 [GstPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #154 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0xa8d6b0 [GstPad], data=data@entry=0x7ffe433c40c0) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #155 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0xa8d900 [GstPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c40c0) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #156 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0xa8d900 [GstPad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #157 0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0xa8d900 [GstPad], parent=0x9f6060 [GstStreamSynchronizer], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #158 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0xa8d900 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #159 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0xad5a80 [GstGhostPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #160 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0xad5a80 [GstGhostPad], data=data@entry=0x7ffe433c43f0) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #161 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x7fe6680275b0 [GstProxyPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c43f0) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #162 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0x7fe6680275b0 [GstProxyPad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #163 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x7fe6680275b0 [GstProxyPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #164 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0xa39580 [GstPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #165 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0xa39580 [GstPad], data=data@entry=0x7ffe433c4650) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #166 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x7fe6780240e0 [GstPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c4650) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #167 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=pad@entry=0x7fe6780240e0 [GstPad], parent=parent@entry=0x7fe66800e7b0 [GstQueue], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #168 0x00007fe68f7bd321 in gst_queue_handle_src_query (pad=0x7fe6780240e0 [GstPad], parent=0x7fe66800e7b0 [GstQueue], query=0x7fe67803f140) at ../subprojects/gstreamer/plugins/elements/gstqueue.c:1619
      #169 0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0x7fe6780240e0 [GstPad], parent=0x7fe66800e7b0 [GstQueue], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #170 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x7fe6780240e0 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #171 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0xad5580 [GstGhostPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #172 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0xad5580 [GstGhostPad], data=data@entry=0x7ffe433c49d0) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #173 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0x7fe6680270f0 [GstProxyPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c49d0) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #174 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0x7fe6680270f0 [GstProxyPad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #175 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x7fe6680270f0 [GstProxyPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #176 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x7fe6780255b0 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #177 0x00007fe69e118c6b in gst_base_transform_default_query (trans=0x7fe674032fa0 [GstVideoConvert], direction=GST_PAD_SRC, query=0x7fe67803f140) at ../subprojects/gstreamer/libs/gst/base/gstbasetransform.c:1557
      #178 0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0x7fe678025a50 [GstPad], parent=0x7fe674032fa0 [GstVideoConvert], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #179 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x7fe678025a50 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #180 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x7fe678025800 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #181 0x00007fe69e118c6b in gst_base_transform_default_query (trans=0x7fe6740346d0 [GstVideoScale], direction=GST_PAD_SRC, query=0x7fe67803f140) at ../subprojects/gstreamer/libs/gst/base/gstbasetransform.c:1557
      #182 0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0x7fe678025360 [GstPad], parent=0x7fe6740346d0 [GstVideoScale], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #183 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x7fe678025360 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #184 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x7fe678024580 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #185 0x00007fe69e118c6b in gst_base_transform_default_query (trans=0x7fe674011950 [GstVideoBalance], direction=GST_PAD_SRC, query=0x7fe67803f140) at ../subprojects/gstreamer/libs/gst/base/gstbasetransform.c:1557
      #186 0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0x7fe678025110 [GstPad], parent=0x7fe674011950 [GstVideoBalance], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #187 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x7fe678025110 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #188 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0xa8d460 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #189 0x00007fe69e118c6b in gst_base_transform_default_query (trans=0x7fe674037330 [GstVideoConvert], direction=GST_PAD_SRC, query=0x7fe67803f140) at ../subprojects/gstreamer/libs/gst/base/gstbasetransform.c:1557
      #190 0x00007fe69e6a60e9 in gst_validate_pad_monitor_query_func (pad=0x7fe678024ec0 [GstPad], parent=0x7fe674037330 [GstVideoConvert], query=0x7fe67803f140) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-pad-monitor.c:2378
      #191 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0x7fe678024ec0 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #192 0x00007fe69e7a263b in gst_pad_peer_query (pad=pad@entry=0x7fe668027350 [GstProxyPad], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #193 0x00007fe69e7a2c2c in query_forward_func (pad=pad@entry=0x7fe668027350 [GstProxyPad], data=data@entry=0x7ffe433c5670) at ../subprojects/gstreamer/gst/gstpad.c:3376
      #194 0x00007fe69e7a0aae in gst_pad_forward (pad=pad@entry=0xad5800 [GstGhostPad], forward=forward@entry=0x7fe69e7a2b70 <query_forward_func>, user_data=user_data@entry=0x7ffe433c5670) at ../subprojects/gstreamer/gst/gstpad.c:3008
      #195 0x00007fe69e7a0ea2 in gst_pad_query_default (pad=0xad5800 [GstGhostPad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:3447
      #196 0x00007fe68f84ad95 in gst_play_sink_convert_bin_query (pad=0xad5800 [GstGhostPad], parent=<optimized out>, query=0x7fe67803f140) at ../subprojects/gst-plugins-base/gst/playback/gstplaysinkconvertbin.c:525
      #197 0x00007fe69e7a1ee0 in gst_pad_query (pad=pad@entry=0xad5800 [GstGhostPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4071
      #198 0x00007fe69e7a263b in gst_pad_peer_query (pad=0xa380b0 [GstPad], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstpad.c:4203
      #199 0x00007fe69e10564c in default_element_query (element=0xa369f0 [GstFakeSink], query=0x7fe67803f140) at ../subprojects/gstreamer/libs/gst/base/gstbasesink.c:5034
      #200 0x00007fe69e77f8f0 in gst_element_query (element=0xa369f0 [GstFakeSink], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstelement.c:1959
      #201 0x00007fe69e7584f7 in bin_query_generic_fold (vitem=<optimized out>, ret=0x7ffe433c59d0, fold=0x7ffe433c5a60) at ../subprojects/gstreamer/gst/gstbin.c:4232
      #202 0x00007fe69e78ffcc in gst_iterator_fold (it=it@entry=0x744820, func=func@entry=0x7fe69e758460 <bin_query_generic_fold>, ret=ret@entry=0x7ffe433c59d0, user_data=user_data@entry=0x7ffe433c5a60) at ../subprojects/gstreamer/gst/gstiterator.c:617
      #203 0x00007fe69e758b82 in bin_iterate_fold (bin=bin@entry=0xa19d80 [GstBin], iter=iter@entry=0x744820, fold_init=fold_init@entry=0x0, fold_done=fold_done@entry=0x0, fold_func=fold_func@entry=0x7fe69e758460 <bin_query_generic_fold>, fold_data=fold_data@entry=0x7ffe433c5a60, default_return=0) at ../subprojects/gstreamer/gst/gstbin.c:4259
      #204 0x00007fe69e75e776 in gst_bin_query (element=0xa19d80 [GstBin], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstbin.c:4379
      #205 0x00007fe69e77f8f0 in gst_element_query (element=0xa19d80 [GstBin], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstelement.c:1959
      #206 0x00007fe69e7584f7 in bin_query_generic_fold (vitem=<optimized out>, ret=0x7ffe433c5ba0, fold=0x7ffe433c5c30) at ../subprojects/gstreamer/gst/gstbin.c:4232
      #207 0x00007fe69e78ffcc in gst_iterator_fold (it=it@entry=0x744cf0, func=func@entry=0x7fe69e758460 <bin_query_generic_fold>, ret=ret@entry=0x7ffe433c5ba0, user_data=user_data@entry=0x7ffe433c5c30) at ../subprojects/gstreamer/gst/gstiterator.c:617
      #208 0x00007fe69e758b82 in bin_iterate_fold (bin=bin@entry=0x9f42e0 [GstPlaySink], iter=iter@entry=0x744cf0, fold_init=fold_init@entry=0x0, fold_done=fold_done@entry=0x0, fold_func=fold_func@entry=0x7fe69e758460 <bin_query_generic_fold>, fold_data=fold_data@entry=0x7ffe433c5c30, default_return=0) at ../subprojects/gstreamer/gst/gstbin.c:4259
      #209 0x00007fe69e75e776 in gst_bin_query (element=0x9f42e0 [GstPlaySink], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstbin.c:4379
      #210 0x00007fe69e77f8f0 in gst_element_query (element=0x9f42e0 [GstPlaySink], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstelement.c:1959
      #211 0x00007fe69e7584f7 in bin_query_generic_fold (vitem=<optimized out>, ret=0x7ffe433c5d70, fold=0x7ffe433c5e00) at ../subprojects/gstreamer/gst/gstbin.c:4232
      #212 0x00007fe69e78ffcc in gst_iterator_fold (it=it@entry=0x7448d0, func=func@entry=0x7fe69e758460 <bin_query_generic_fold>, ret=ret@entry=0x7ffe433c5d70, user_data=user_data@entry=0x7ffe433c5e00) at ../subprojects/gstreamer/gst/gstiterator.c:617
      #213 0x00007fe69e758b82 in bin_iterate_fold (bin=bin@entry=0x9ee0a0 [GESPipeline], iter=iter@entry=0x7448d0, fold_init=fold_init@entry=0x0, fold_done=fold_done@entry=0x0, fold_func=fold_func@entry=0x7fe69e758460 <bin_query_generic_fold>, fold_data=fold_data@entry=0x7ffe433c5e00, default_return=0) at ../subprojects/gstreamer/gst/gstbin.c:4259
      #214 0x00007fe69e75e776 in gst_bin_query (element=0x9ee0a0 [GESPipeline], query=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstbin.c:4379
      #215 0x00007fe69e77f8f0 in gst_element_query (element=0x9ee0a0 [GESPipeline], query=query@entry=0x7fe67803f140) at ../subprojects/gstreamer/gst/gstelement.c:1959
      #216 0x00007fe69e6b5d01 in _check_position (rate=0x7ffe433c5ee0, position=0x7ffe433c5ee8, act=0xaa82a0, scenario=0x9fe250 [GstValidateScenario]) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-scenario.c:1658
      #217 0x00007fe69e6b5d01 in execute_next_action (scenario=scenario@entry=0x9fe250 [GstValidateScenario]) at ../subprojects/gst-devtools/validate/gst/validate/gst-validate-scenario.c:2107
      #218 0x00007fe69e587b31 in g_timeout_dispatch (source=0xaa7da0, callback=0x7fe69e6b5830 <execute_next_action>, user_data=0x9fe250) at gmain.c:4667
      #219 0x00007fe69e58706d in g_main_dispatch (context=0x71bc50) at gmain.c:3182
      #220 0x00007fe69e58706d in g_main_context_dispatch (context=context@entry=0x71bc50) at gmain.c:3847
      #221 0x00007fe69e587438 in g_main_context_iterate (context=context@entry=0x71bc50, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3920
      #222 0x00007fe69e5874d0 in g_main_context_iteration (context=context@entry=0x71bc50, may_block=may_block@entry=1) at gmain.c:3981
      #223 0x00007fe69e3dfd25 in g_application_run (application=0x71c1f0 [GESLauncher], argc=argc@entry=6, argv=argv@entry=0x7ffe433c61c8) at gapplication.c:2470
      #224 0x000000000040393c in main (argc=6, argv=0x7ffe433c61c8) at ../subprojects/gst-editing-services/tools/ges-launch.c:88
      (gdb) p last_group
      $1 = (GstDecodeGroup *) 0x52c
      (gdb) p group
      $2 = (GstDecodeGroup *) 0x7fe668076f80
      (gdb) p group->parent
      $3 = (GstDecodeChain *) 0x7fe6680774c0
      (gdb) p group->parent->next_group
      There is no member named next_group.
      (gdb) group->parent->next_groups
      Undefined command: "group->parent->next_groups".  Try "help".
      (gdb) p group->parent->next_groups
      $4 = 0x7fe660004280 = {0x528, 0x529, 0x52a, 0x52b, 0x52c}
      (gdb) p *group->parent->next_groups
      $5 = {data=0x528, next=0x7fe668077500, prev=0x7fe64c04ab80}
      (gdb) p *group
      $6 = {dbin = 0x52a, parent = 0x7fe6680774c0, multiqueue = 0x7fe668077500, overrunsig = 167503724544, overrun = 1, no_more_pads = 0, drained = 1745725152, children = 0xa19220 = {0x73d400, <error reading variable>
      (gdb)  Quit
      (gdb)
    a19ad41a
Name
Last commit
Last update
common @ f0c2dc9a Loading commit data...
docs Loading commit data...
ext Loading commit data...
gst Loading commit data...
gst-libs Loading commit data...
hooks Loading commit data...
m4 Loading commit data...
pkgconfig Loading commit data...
po Loading commit data...
sys Loading commit data...
tests Loading commit data...
tools Loading commit data...
.gitignore Loading commit data...
.gitmodules Loading commit data...
AUTHORS Loading commit data...
COPYING Loading commit data...
COPYING.LIB Loading commit data...
ChangeLog Loading commit data...
MAINTAINERS Loading commit data...
Makefile.am Loading commit data...
NEWS Loading commit data...
README Loading commit data...
README.static-linking Loading commit data...
RELEASE Loading commit data...
REQUIREMENTS Loading commit data...
autogen.sh Loading commit data...
configure.ac Loading commit data...
gst-plugins-base.doap Loading commit data...
meson.build Loading commit data...
meson_options.txt Loading commit data...