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  1. Qt
  2. QTBUG-122638

[gstreamer] deadlock when switching camera

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Details

    • Linux/X11
    • cf84c3164 (dev), 6027a24f2 (6.7), 47c00ad80 (6.6), 739efa951 (tqtc/lts-6.5), 6e0a706d9 (dev), bc8ff8da8 (6.7), 7af4ecb2d (6.6), 30e45c690 (tqtc/lts-6.5)
    • Multimedia Wk7

    Description

      reproducer of QTBUG-105062 gives the following deadlock when switching cameras

      >success="1",output="* thread #1, name = 'qtbug-105062', stop reason = signal SIGSTOP
          frame #0: 0x00007ffff0c912c0 libc.so.6`__GI___lll_lock_wait at futex-internal.h:146:13
          frame #1: 0x00007ffff0c912aa libc.so.6`__GI___lll_lock_wait(futex=0x0000504000033550, private=0) at lowlevellock.c:49:7
          frame #2: 0x00007ffff0c9805d libc.so.6`___pthread_mutex_lock at pthread_mutex_lock.c:48:5
          frame #3: 0x00007ffff0c98046 libc.so.6`___pthread_mutex_lock(mutex=0x0000504000033550) at pthread_mutex_lock.c:128:7
        * frame #4: 0x00007fffe9cb74d4 libgstreamer-1.0.so.0`activate_mode_internal [inlined] post_activate(pad=0x000052900008ef50, new_mode=<unavailable>) at gstpad.c:1053:7
          frame #5: 0x00007fffe9cb7460 libgstreamer-1.0.so.0`activate_mode_internal(pad=0x000052900008ef50, parent=0x0000529000088a20, mode=GST_PAD_MODE_PUSH, active=0) at gstpad.c:1231:5
          frame #6: 0x00007fffe9cb7c77 libgstreamer-1.0.so.0`gst_pad_activate_mode(pad=0x000052900008ef50, mode=GST_PAD_MODE_PUSH, active=0) at gstpad.c:1329:9
          frame #7: 0x00007fffe9ca57fd libgstreamer-1.0.so.0`gst_ghost_pad_activate_push_default(pad=<unavailable>, parent=<unavailable>, active=0) at gstghostpad.c:371:9
          frame #8: 0x00007fffe9cb7458 libgstreamer-1.0.so.0`activate_mode_internal(pad=0x0000529000088a20, parent=0x000052500035a7c0, mode=GST_PAD_MODE_PUSH, active=0) at gstpad.c:1224:11
          frame #9: 0x00007fffe9cb6e99 libgstreamer-1.0.so.0`gst_pad_set_active(pad=0x0000529000088a20, active=0) at gstpad.c:1122:13
          frame #10: 0x00007fffe9c784e0 libgstreamer-1.0.so.0`activate_pads(vpad=0x00007fffffff87f0, ret=0x00007fffffff8850, active=0x00007fffffff884c) at gstbin.c:2630:8
          frame #11: 0x00007fffe9cae49c libgstreamer-1.0.so.0`gst_iterator_fold(it=0x000050e00009dca0, func=(libgstreamer-1.0.so.0`activate_pads at gstbin.c:2626), ret=0x00007fffffff8850, user_data=0x00007fffffff884c) at gstiterator.c:618:14
          frame #12: 0x00007fffe9c77bd1 libgstreamer-1.0.so.0`gst_bin_src_pads_activate [inlined] iterator_activate_fold_with_resync(iter=0x000050e00009dca0, user_data=0x00007fffffff884c) at gstbin.c:2653:12
          frame #13: 0x00007fffe9c77b80 libgstreamer-1.0.so.0`gst_bin_src_pads_activate(bin=0x000052500035a7c0, active=0) at gstbin.c:2687:13
          frame #14: 0x00007fffe9c72d66 libgstreamer-1.0.so.0`gst_bin_change_state_func(element=0x000052500035a7c0, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstbin.c:0
          frame #15: 0x00007fffe9c9bb2d libgstreamer-1.0.so.0`gst_element_change_state(element=0x000052500035a7c0, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstelement.c:3101:11
          frame #16: 0x00007fffe9c9b8cf libgstreamer-1.0.so.0`gst_element_continue_state(element=<unavailable>, ret=<unavailable>) at gstelement.c:2809:9 [artificial]
          frame #17: 0x00007fffe9c9bd31 libgstreamer-1.0.so.0`gst_element_change_state(element=0x000052500035a7c0, transition=GST_STATE_CHANGE_PLAYING_TO_PAUSED) at gstelement.c:0
          frame #18: 0x00007fffe9c9d1b0 libgstreamer-1.0.so.0`gst_element_set_state_func(element=0x000052500035a7c0, state=<unavailable>) at gstelement.c:3055:9
          frame #19: 0x00007fffea87459e libgstreamermediaplugin.so`QGstElement::setStateSync(this=0x00007fffec5ccca0, state=GST_STATE_NULL) at qgst_p.h:561:23
          frame #20: 0x00007fffea98251e libgstreamermediaplugin.so`QGstreamerMediaCapture::setCamera(this=0x00005110000d40c0, camera=0x0000000000000000) at qgstreamermediacapture.cpp:102:16
          frame #21: 0x00007ffff7c3a365 libQt6Multimedia.so.6`QMediaCaptureSession::setCamera(this=0x000050d000050348, camera=0x000050200040c4d0) at qmediacapturesession.cpp:235:32
          frame #22: 0x00005555556768e9 qtbug-105062`zcCameraWidget::startTake(this=0x00005060000cf7a0, absoluteFilename=0x00007fffec41d180) at zccamerawidget.cpp:269:25
          frame #23: 0x0000555555672e1a qtbug-105062`zcCameraWidget::selectCamera(this=0x00005060000cf7a0, idx=0) at zccamerawidget.cpp:172:9
          frame #24: 0x000055555567fda3 qtbug-105062`QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<int>, void, void (zcCameraWidget::*)(int)>::call(this=0x00007fffec370ea0)(int), zcCameraWidget*, void**)::'lambda'()::operator()() const at qobjectdefs_impl.h:153:24
          frame #25: 0x000055555567fb59 qtbug-105062`void QtPrivate::FunctorCallBase::call_internal<void, QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<int>, void, void (zcCameraWidget::*)(int)>::call(void (zcCameraWidget::*)(int), zcCameraWidget*, void**)::'lambda'()>(args=0x00007fffec2a0830, fn=0x00007fffec370ea0) at qobjectdefs_impl.h:72:13
          frame #26: 0x000055555567f93d qtbug-105062`QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<int>, void, void (zcCameraWidget::*)(int)>::call(f=(qtbug-105062`zcCameraWidget::selectCamera(int) at zccamerawidget.cpp:154), o=0x00005060000cf7a0, arg=0x00007fffec2a0830) at qobjectdefs_impl.h:152:13
          frame #27: 0x000055555567f575 qtbug-105062`void QtPrivate::FunctionPointer<void (zcCameraWidget::*)(int)>::call<QtPrivate::List<int>, void>(f=(qtbug-105062`zcCameraWidget::selectCamera(int) at zccamerawidget.cpp:154), o=0x00005060000cf7a0, arg=0x00007fffec2a0830) at qobjectdefs_impl.h:200:13
          frame #28: 0x000055555567f145 qtbug-105062`QtPrivate::QCallableObject<void (zcCameraWidget::*)(int), QtPrivate::List<int>, void>::impl(which=1, this_=0x0000503000266470, r=0x00005060000cf7a0, a=0x00007fffec2a0830, ret=0x0000000000000000) at qobjectdefs_impl.h:571:21
          frame #29: 0x00007ffff1c0341b libQt6Core.so.6`QtPrivate::QSlotObjectBase::call(this=0x0000503000266470, r=0x00005060000cf7a0, a=0x00007fffec2a0830) at qobjectdefs_impl.h:487:51
          frame #30: 0x00007ffff226a274 libQt6Core.so.6`void doActivate<false>(sender=0x00005040000cb750, signal_index=12, argv=0x00007fffec2a0830) at qobject.cpp:4116:26
          frame #31: 0x00007ffff2129b89 libQt6Core.so.6`QMetaObject::activate(sender=0x00005040000cb750, m=0x00007ffff6eaea20, local_signal_index=5, argv=0x00007fffec2a0830) at qobject.cpp:4176:9
          frame #32: 0x00007ffff6465dd7 libQt6Widgets.so.6`QComboBox::currentIndexChanged(this=0x00005040000cb750, _t1=0) at moc_qcombobox.cpp:460:5
          frame #33: 0x00007ffff646205d libQt6Widgets.so.6`QComboBoxPrivate::emitCurrentIndexChanged(this=0x0000518000016880, index=0x00007fffec41b1a0) at qcombobox.cpp:1425:13
          frame #34: 0x00007ffff6452edc libQt6Widgets.so.6`QComboBoxPrivate::setCurrentIndex(this=0x0000518000016880, mi=0x00007fffec36e620) at qcombobox.cpp:2204:9
          frame #35: 0x00007ffff6450a19 libQt6Widgets.so.6`QComboBox::setCurrentIndex(this=0x00005040000cb750, index=0) at qcombobox.cpp:2151:8
          frame #36: 0x00007ffff6476d3b libQt6Widgets.so.6`QComboBox::keyPressEvent(this=0x00005040000cb750, e=0x00007fffec36b430) at qcombobox.cpp:3371:13
          frame #37: 0x00007ffff66a5571 libQt6Widgets.so.6`QWidget::event(this=0x00005040000cb750, event=0x00007fffec36b430) at qwidget.cpp:9028:9
          frame #38: 0x00007ffff6474a45 libQt6Widgets.so.6`QComboBox::event(this=0x00005040000cb750, event=0x00007fffec36b430) at qcombobox.cpp:3157:21
          frame #39: 0x00007ffff6631ffa libQt6Widgets.so.6`QApplicationPrivate::notify_helper(this=0x0000515000000580, receiver=0x00005040000cb750, e=0x00007fffec36b430) at qapplication.cpp:3298:26
          frame #40: 0x00007ffff663735e libQt6Widgets.so.6`QApplication::notify(this=0x00007fffec302130, receiver=0x00005040000cb750, e=0x00007fffec36b430) at qapplication.cpp:2717:26
          frame #41: 0x00007ffff2470ecd libQt6Core.so.6`QCoreApplication::notifyInternal2(receiver=0x00005040000cb750, event=0x00007fffec36b430) at qcoreapplication.cpp:1138:18
          frame #42: 0x00007ffff2471326 libQt6Core.so.6`QCoreApplication::forwardEvent(receiver=0x00005040000cb750, event=0x00007fffec36b430, originatingEvent=0x0000000000000000) at qcoreapplication.cpp:1153:12
          frame #43: 0x00007ffff672e038 libQt6Widgets.so.6`QWidgetWindow::handleKeyEvent(this=0x0000508000045020, event=0x00007fffec36b430) at qwidgetwindow.cpp:691:5
          frame #44: 0x00007ffff672d2ce libQt6Widgets.so.6`QWidgetWindow::event(this=0x0000508000045020, event=0x00007fffec36b430) at qwidgetwindow.cpp:256:9
          frame #45: 0x00007ffff6631ffa libQt6Widgets.so.6`QApplicationPrivate::notify_helper(this=0x0000515000000580, receiver=0x0000508000045020, e=0x00007fffec36b430) at qapplication.cpp:3298:26
          frame #46: 0x00007ffff663d5d7 libQt6Widgets.so.6`QApplication::notify(this=0x00007fffec302130, receiver=0x0000508000045020, e=0x00007fffec36b430) at qapplication.cpp:3249:18
          frame #47: 0x00007ffff2470ecd libQt6Core.so.6`QCoreApplication::notifyInternal2(receiver=0x0000508000045020, event=0x00007fffec36b430) at qcoreapplication.cpp:1138:18
          frame #48: 0x00007ffff2474449 libQt6Core.so.6`QCoreApplication::sendSpontaneousEvent(receiver=0x0000508000045020, event=0x00007fffec36b430) at qcoreapplication.cpp:1595:12
          frame #49: 0x00007ffff3309fa2 libQt6Gui.so.6`QGuiApplicationPrivate::processKeyEvent(e=0x000050c000097900) at qguiapplication.cpp:2450:9
          frame #50: 0x00007ffff3305ab3 libQt6Gui.so.6`QGuiApplicationPrivate::processWindowSystemEvent(e=0x000050c000097900) at qguiapplication.cpp:2074:9
          frame #51: 0x00007ffff355b32f libQt6Gui.so.6`QWindowSystemInterface::sendWindowSystemEvents(flags=(i = 164)) at qwindowsysteminterface.cpp:1114:13
          frame #52: 0x00007fffe9f77a33 libQt6XcbQpa.so.6`xcbSourceDispatch(source=0x000050c000017980, (null)=0x0000000000000000, (null)=0x0000000000000000) at qxcbeventdispatcher.cpp:57:5
          frame #53: 0x00007ffff2d1bd3b libglib-2.0.so.0`g_main_context_dispatch + 619
          frame #54: 0x00007ffff2d71258 libglib-2.0.so.0`___lldb_unnamed_symbol2709 + 488
          frame #55: 0x00007ffff2d193e3 libglib-2.0.so.0`g_main_context_iteration + 51
          frame #56: 0x00007ffff16c9b91 libQt6Core.so.6`QEventDispatcherGlib::processEvents(this=0x000050700000ddf0, flags=(i = 164)) at qeventdispatcher_glib.cpp:394:19
          frame #57: 0x00007fffe9f77d7b libQt6XcbQpa.so.6`QXcbGlibEventDispatcher::processEvents(this=0x000050700000ddf0, flags=(i = 164)) at qxcbeventdispatcher.cpp:96:34
          frame #58: 0x00007ffff2486c94 libQt6Core.so.6`QEventLoop::processEvents(this=0x00007fffec3e50a0, flags=(i = 164)) at qeventloop.cpp:100:55
          frame #59: 0x00007ffff247366f libQt6Core.so.6`QEventLoop::exec(this=0x00007fffec3e50a0, flags=(i = 128)) at qeventloop.cpp:191:9
          frame #60: 0x00007ffff2472ea8 libQt6Core.so.6`QCoreApplication::exec() at qcoreapplication.cpp:1482:32
          frame #61: 0x00007ffff33046a6 libQt6Gui.so.6`QGuiApplication::exec() at qguiapplication.cpp:1924:12
          frame #62: 0x00007ffff6635fe9 libQt6Widgets.so.6`QApplication::exec() at qapplication.cpp:2568:12
          frame #63: 0x000055555566bb06 qtbug-105062`main(argc=1, argv=0x00007fffffffd9f8) at main.cpp:10:12
          frame #64: 0x00007ffff0c29d90 libc.so.6`__libc_start_call_main(main=(qtbug-105062`main at main.cpp:6), argc=1, argv=0x00007fffffffd9f8) at libc_start_call_main.h:58:16
          frame #65: 0x00007ffff0c29e40 libc.so.6`__libc_start_main_impl(main=(qtbug-105062`main at main.cpp:6), argc=1, argv=0x00007fffffffd9f8, init=<unavailable>, fini=<unavailable>, rtld_fini=<unavailable>, stack_end=0x00007fffffffd9e8) at libc-start.c:392:3
          frame #66: 0x0000555555589ca5 qtbug-105062`_start + 37
        thread #2, name = 'QDBusConnection'
          frame #0: 0x00007ffff0d18bcf libc.so.6`__GI___poll(fds=0x0000503000004450, nfds=3, timeout=-1) at poll.c:29:10
          frame #1: 0x00005555555cb166 qtbug-105062`___interceptor_poll + 118
          frame #2: 0x00007ffff2d711f6 libglib-2.0.so.0`___lldb_unnamed_symbol2709 + 390
          frame #3: 0x00007ffff2d193e3 libglib-2.0.so.0`g_main_context_iteration + 51
          frame #4: 0x00007ffff16c9b91 libQt6Core.so.6`QEventDispatcherGlib::processEvents(this=0x0000502000001010, flags=(i = 36)) at qeventdispatcher_glib.cpp:394:19
          frame #5: 0x00007ffff2486c94 libQt6Core.so.6`QEventLoop::processEvents(this=0x00007fffe83ff2c0, flags=(i = 36)) at qeventloop.cpp:100:55
          frame #6: 0x00007ffff247366f libQt6Core.so.6`QEventLoop::exec(this=0x00007fffe83ff2c0, flags=(i = 0)) at qeventloop.cpp:191:9
          frame #7: 0x00007ffff1f51750 libQt6Core.so.6`QThread::exec(this=0x00007ffff0a17280) at qthread.cpp:595:32
          frame #8: 0x00007ffff09564e0 libQt6DBus.so.6`QDBusConnectionManager::run(this=0x00007ffff0a17280) at qdbusconnectionmanager.cpp:144:5
          frame #9: 0x00007ffff1d42d9a libQt6Core.so.6`QThreadPrivate::start(void*)::$_0::operator()(this=0x00007fffe84ff080) const at qthread_unix.cpp:326:14
          frame #10: 0x00007ffff1d0f995 libQt6Core.so.6`void (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::$_0>(t=0x00007fffe84ff080) at qthread_unix.cpp:262:9
          frame #11: 0x00007ffff1d0f64c libQt6Core.so.6`QThreadPrivate::start(arg=0x00007ffff0a17280) at qthread_unix.cpp:285:5
          frame #12: 0x0000555555623d6b qtbug-105062`asan_thread_start(void*) + 59
          frame #13: 0x00007ffff0c94ac3 libc.so.6`start_thread(arg=<unavailable>) at pthread_create.c:442:8
          frame #14: 0x00007ffff0d26850 libc.so.6`__clone3 at clone3.S:81
        thread #3, name = 'QXcbEventQueue'
          frame #0: 0x00007ffff0d18bcf libc.so.6`__GI___poll(fds=0x00007fffe82f47c8, nfds=1, timeout=-1) at poll.c:29:10
          frame #1: 0x00005555555cb166 qtbug-105062`___interceptor_poll + 118
          frame #2: 0x00007ffff50a27e2 libxcb.so.1`___lldb_unnamed_symbol792 + 130
          frame #3: 0x00007ffff50a422c libxcb.so.1`xcb_wait_for_event + 108
          frame #4: 0x00007fffe9f7b6de libQt6XcbQpa.so.6`QXcbEventQueue::run(this=0x000050d0000017d0) at qxcbeventqueue.cpp:192:51
          frame #5: 0x00007ffff1d42d9a libQt6Core.so.6`QThreadPrivate::start(void*)::$_0::operator()(this=0x00007fffe71f5080) const at qthread_unix.cpp:326:14
          frame #6: 0x00007ffff1d0f995 libQt6Core.so.6`void (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::$_0>(t=0x00007fffe71f5080) at qthread_unix.cpp:262:9
          frame #7: 0x00007ffff1d0f64c libQt6Core.so.6`QThreadPrivate::start(arg=0x000050d0000017d0) at qthread_unix.cpp:285:5
          frame #8: 0x0000555555623d6b qtbug-105062`asan_thread_start(void*) + 59
          frame #9: 0x00007ffff0c94ac3 libc.so.6`start_thread(arg=<unavailable>) at pthread_create.c:442:8
          frame #10: 0x00007ffff0d26850 libc.so.6`__clone3 at clone3.S:81
        thread #4, name = 'threaded-ml'
          frame #0: 0x00007ffff0d18bcf libc.so.6`__GI___poll(fds=0x0000503000265b40, nfds=3, timeout=-1) at poll.c:29:10
          frame #1: 0x00007ffff796021d libpulse.so.0`___lldb_unnamed_symbol1006 + 61
          frame #2: 0x00007ffff79495a1 libpulse.so.0`pa_mainloop_poll + 241
          frame #3: 0x00007ffff79540bb libpulse.so.0`pa_mainloop_iterate + 43
          frame #4: 0x00007ffff7954170 libpulse.so.0`pa_mainloop_run + 32
          frame #5: 0x00007ffff796437d libpulse.so.0`___lldb_unnamed_symbol1014 + 109
          frame #6: 0x00007ffff0e82cb3 libpulsecommon-15.99.so`___lldb_unnamed_symbol1546 + 83
          frame #7: 0x0000555555623d6b qtbug-105062`asan_thread_start(void*) + 59
          frame #8: 0x00007ffff0c94ac3 libc.so.6`start_thread(arg=<unavailable>) at pthread_create.c:442:8
          frame #9: 0x00007ffff0d26850 libc.so.6`__clone3 at clone3.S:81
        thread #5, name = 'MDNS listener'
          frame #0: 0x00007ffff0d18bcf libc.so.6`__GI___poll(fds=0x00007fffc215aa30, nfds=1, timeout=1000) at poll.c:29:10
          frame #1: 0x00007fffe6f6f591 libmicrodns.so.1`mdns_listen_probe_network [inlined] poll(__timeout=1000, __nfds=<unavailable>, __fds=0x00007fffc215aa30) at poll2.h:39:10
          frame #2: 0x00007fffe6f6f576 libmicrodns.so.1`mdns_listen_probe_network(ctx=0x0000503000250240, names=<unavailable>, nb_names=<unavailable>, callback=<unavailable>, p_cookie=<unavailable>) at mdns.c:747:9
          frame #3: 0x00007fffe6f6f9a6 libmicrodns.so.1`mdns_listen(ctx=0x0000503000250240, names=0x00007fffc215aba8, nb_names=1, type=RR_PTR, interval=2, stop=(libgstmicrodns.so`stop at gstmicrodnsdevice.c:214), callback=(libgstmicrodns.so`callback at gstmicrodnsdevice.c:232), p_cookie=0x0000506000115040) at mdns.c:822:17
          frame #4: 0x00007fffea81e9e4 libgstmicrodns.so`_listen(ctx=0x0000506000115040) at gstmicrodnsdevice.c:357:12
          frame #5: 0x00007ffff2d4aa51 libglib-2.0.so.0`___lldb_unnamed_symbol2558 + 81
          frame #6: 0x0000555555623d6b qtbug-105062`asan_thread_start(void*) + 59
          frame #7: 0x00007ffff0c94ac3 libc.so.6`start_thread(arg=<unavailable>) at pthread_create.c:442:8
          frame #8: 0x00007ffff0d26850 libc.so.6`__clone3 at clone3.S:81
        thread #6, name = 'threaded-ml'
          frame #0: 0x00007ffff0d18bcf libc.so.6`__GI___poll(fds=0x0000503000252580, nfds=3, timeout=-1) at poll.c:29:10
          frame #1: 0x00007ffff796021d libpulse.so.0`___lldb_unnamed_symbol1006 + 61
          frame #2: 0x00007ffff79495a1 libpulse.so.0`pa_mainloop_poll + 241
          frame #3: 0x00007ffff79540bb libpulse.so.0`pa_mainloop_iterate + 43
          frame #4: 0x00007ffff7954170 libpulse.so.0`pa_mainloop_run + 32
          frame #5: 0x00007ffff796437d libpulse.so.0`___lldb_unnamed_symbol1014 + 109
          frame #6: 0x00007ffff0e82cb3 libpulsecommon-15.99.so`___lldb_unnamed_symbol1546 + 83
          frame #7: 0x0000555555623d6b qtbug-105062`asan_thread_start(void*) + 59
          frame #8: 0x00007ffff0c94ac3 libc.so.6`start_thread(arg=<unavailable>) at pthread_create.c:442:8
          frame #9: 0x00007ffff0d26850 libc.so.6`__clone3 at clone3.S:81
        thread #7, name = 'libusb_event'
          frame #0: 0x00007ffff0d18bcf libc.so.6`__GI___poll(fds=0x00007fffafb46c30, nfds=2, timeout=-1) at poll.c:29:10
          frame #1: 0x00005555555cb166 qtbug-105062`___interceptor_poll + 118
          frame #2: 0x00007fffe6d854c2 libusb-1.0.so.0`___lldb_unnamed_symbol377 + 162
          frame #3: 0x0000555555623d6b qtbug-105062`asan_thread_start(void*) + 59
          frame #4: 0x00007ffff0c94ac3 libc.so.6`start_thread(arg=<unavailable>) at pthread_create.c:442:8
          frame #5: 0x00007ffff0d26850 libc.so.6`__clone3 at clone3.S:81
        thread #8, name = 'qtbug-105062'
          frame #0: 0x00007ffff0d18bcf libc.so.6`__GI___poll(fds=0x000050200007e8d0, nfds=2, timeout=-1) at poll.c:29:10
          frame #1: 0x00005555555cb166 qtbug-105062`___interceptor_poll + 118
          frame #2: 0x00007ffff2d711f6 libglib-2.0.so.0`___lldb_unnamed_symbol2709 + 390
          frame #3: 0x00007ffff2d1b2b3 libglib-2.0.so.0`g_main_loop_run + 115
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          frame #7: 0x00007ffff0c94ac3 libc.so.6`start_thread(arg=<unavailable>) at pthread_create.c:442:8
          frame #8: 0x00007ffff0d26850 libc.so.6`__clone3 at clone3.S:81
        thread #9, name = 'videoQueue:src'
          frame #0: 0x00007ffff0d1e88d libc.so.6`syscall at syscall.S:38
          frame #1: 0x00007ffff2d6ab43 libglib-2.0.so.0`g_cond_wait + 51
          frame #2: 0x00007fffe6fc292f libgstcoreelements.so`gst_queue_handle_sink_query(pad=<unavailable>, parent=0x0000529000084310, query=0x0000507000093d40) at gstqueue.c:1119:11
          frame #3: 0x00007fffe9cbd70d libgstreamer-1.0.so.0`gst_pad_query(pad=0x000052900007ec80, query=0x0000507000093d40) at gstpad.c:4228:9
          frame #4: 0x00007fffe9cbb6ef libgstreamer-1.0.so.0`gst_pad_peer_query(pad=0x000052900008e370, query=0x0000507000093d40) at gstpad.c:4365:9
          frame #5: 0x00007fffe9cbcfa8 libgstreamer-1.0.so.0`query_forward_func(pad=0x000052900008e370, data=0x00007fffad5326d0) at gstpad.c:3484:19
          frame #6: 0x00007fffe9cbc14d libgstreamer-1.0.so.0`gst_pad_forward(pad=0x00005290000882d0, forward=(libgstreamer-1.0.so.0`query_forward_func at gstpad.c:3480), user_data=0x00007fffad5326d0) at gstpad.c:3110:25
          frame #7: 0x00007fffe9cbcb2b libgstreamer-1.0.so.0`gst_pad_query_default(pad=0x00005290000882d0, parent=<unavailable>, query=0x0000507000093d40) at gstpad.c:3555:5
          frame #8: 0x00007fffe9cbd70d libgstreamer-1.0.so.0`gst_pad_query(pad=0x00005290000882d0, query=0x0000507000093d40) at gstpad.c:4228:9
          frame #9: 0x00007fffe9cbb6ef libgstreamer-1.0.so.0`gst_pad_peer_query(pad=0x000052900007e340, query=0x0000507000093d40) at gstpad.c:4365:9
          frame #10: 0x00007fffeb36f01e libgstvideo-1.0.so.0`gst_video_filter_propose_allocation(trans=0x000051a0000439d0, decide_query=0x0000000000000000, query=0x0000507000093d40) at gstvideofilter.c:65:8
          frame #11: 0x00007fffe9dcae7e libgstbase-1.0.so.0`gst_base_transform_default_query(trans=0x000051a0000439d0, direction=<unavailable>, query=0x0000507000093d40) at gstbasetransform.c:1537:1
      
      >5
          frame #12: 0x00007fffe9cbd70d libgstreamer-1.0.so.0`gst_pad_query(pad=0x000052900007e0f0, query=0x0000507000093d40) at gstpad.c:4228:9
          frame #13: 0x00007fffe9cbb6ef libgstreamer-1.0.so.0`gst_pad_peer_query(pad=0x000052900007ea30, query=0x0000507000093d40) at gstpad.c:4365:9
          frame #14: 0x00007fffe6fc510e libgstcoreelements.so`gst_queue_loop at gstqueue.c:1516:11
          frame #15: 0x00007fffe6fc50e7 libgstcoreelements.so`gst_queue_loop(pad=<unavailable>) at gstqueue.c:1584:9
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          frame #20: 0x00007ffff0c94ac3 libc.so.6`start_thread(arg=<unavailable>) at pthread_create.c:442:8
          frame #21: 0x00007ffff0d26850 libc.so.6`__clone3 at clone3.S:81
        thread #10, name = 'camerasrc:src'
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          frame #1: 0x00007ffff2d6ab43 libglib-2.0.so.0`g_cond_wait + 51
          frame #2: 0x00007fffe6fc292f libgstcoreelements.so`gst_queue_handle_sink_query(pad=<unavailable>, parent=0x0000529000084010, query=0x0000507000093d40) at gstqueue.c:1119:11
          frame #3: 0x00007fffe9cbd70d libgstreamer-1.0.so.0`gst_pad_query(pad=0x000052900007e7e0, query=0x0000507000093d40) at gstpad.c:4228:9
          frame #4: 0x00007fffe9cbb6ef libgstreamer-1.0.so.0`gst_pad_peer_query(pad=0x000052900008e110, query=0x0000507000093d40) at gstpad.c:4365:9
          frame #5: 0x00007fffe9cbcfa8 libgstreamer-1.0.so.0`query_forward_func(pad=0x000052900008e110, data=0x00007fffacd30b90) at gstpad.c:3484:19
          frame #6: 0x00007fffe9cbc14d libgstreamer-1.0.so.0`gst_pad_forward(pad=0x0000529000088060, forward=(libgstreamer-1.0.so.0`query_forward_func at gstpad.c:3480), user_data=0x00007fffacd30b90) at gstpad.c:3110:25
          frame #7: 0x00007fffe9cbcb2b libgstreamer-1.0.so.0`gst_pad_query_default(pad=0x0000529000088060, parent=<unavailable>, query=0x0000507000093d40) at gstpad.c:3555:5
          frame #8: 0x00007fffe9cbd70d libgstreamer-1.0.so.0`gst_pad_query(pad=0x0000529000088060, query=0x0000507000093d40) at gstpad.c:4228:9
          frame #9: 0x00007fffe6fca98a libgstcoreelements.so`gst_tee_query_allocation(item=0x00007fffacd30d40, ret=0x00007fffacd30e00, user_data=0x00007fffacd30d98) at gsttee.c:614:8
          frame #10: 0x00007fffe9cae49c libgstreamer-1.0.so.0`gst_iterator_fold(it=0x000050e00005b820, func=(libgstcoreelements.so`gst_tee_query_allocation at gsttee.c:586), ret=0x00007fffacd30e00, user_data=0x00007fffacd30d98) at gstiterator.c:618:14
          frame #11: 0x00007fffe6fca37b libgstcoreelements.so`gst_tee_sink_query(pad=<unavailable>, parent=<unavailable>, query=0x0000507000093cd0) at gsttee.c:757:11
          frame #12: 0x00007fffe9cbd70d libgstreamer-1.0.so.0`gst_pad_query(pad=0x0000529000125cd0, query=0x0000507000093cd0) at gstpad.c:4228:9
          frame #13: 0x00007fffe9cbb6ef libgstreamer-1.0.so.0`gst_pad_peer_query(pad=0x0000529000088a20, query=0x0000507000093cd0) at gstpad.c:4365:9
          frame #14: 0x00007fffe9cbcfa8 libgstreamer-1.0.so.0`query_forward_func(pad=0x0000529000088a20, data=0x00007fffacd31030) at gstpad.c:3484:19
          frame #15: 0x00007fffe9cbc14d libgstreamer-1.0.so.0`gst_pad_forward(pad=0x000052900008ef50, forward=(libgstreamer-1.0.so.0`query_forward_func at gstpad.c:3480), user_data=0x00007fffacd31030) at gstpad.c:3110:25
          frame #16: 0x00007fffe9cbcb2b libgstreamer-1.0.so.0`gst_pad_query_default(pad=0x000052900008ef50, parent=<unavailable>, query=0x0000507000093cd0) at gstpad.c:3555:5
          frame #17: 0x00007fffe9cbd70d libgstreamer-1.0.so.0`gst_pad_query(pad=0x000052900008ef50, query=0x0000507000093cd0) at gstpad.c:4228:9
          frame #18: 0x00007fffe9cbb6ef libgstreamer-1.0.so.0`gst_pad_peer_query(pad=0x0000529000067ae0, query=0x0000507000093cd0) at gstpad.c:4365:9
          frame #19: 0x00007fffeb36f01e libgstvideo-1.0.so.0`gst_video_filter_propose_allocation(trans=0x000051a0000931d0, decide_query=0x0000000000000000, query=0x0000507000093cd0) at gstvideofilter.c:65:8
          frame #20: 0x00007fffe9dcae7e libgstbase-1.0.so.0`gst_base_transform_default_query(trans=0x000051a0000931d0, direction=<unavailable>, query=0x0000507000093cd0) at gstbasetransform.c:1537:15
          frame #21: 0x00007fffe9cbd70d libgstreamer-1.0.so.0`gst_pad_query(pad=0x0000529000067890, query=0x0000507000093cd0) at gstpad.c:4228:9
          frame #22: 0x00007fffe9cbb6ef libgstreamer-1.0.so.0`gst_pad_peer_query(pad=0x0000529000067640, query=0x0000507000093cd0) at gstpad.c:4365:9
          frame #23: 0x00007fffeb36f01e libgstvideo-1.0.so.0`gst_video_filter_propose_allocation(trans=0x000051a000092bd0, decide_query=0x0000000000000000, query=0x0000507000093cd0) at gstvideofilter.c:65:8
          frame #24: 0x00007fffe9dcae7e libgstbase-1.0.so.0`gst_base_transform_default_query(trans=0x000051a000092bd0, direction=<unavailable>, query=0x0000507000093cd0) at gstbasetransform.c:1537:15
          frame #25: 0x00007fffe9cbd70d libgstreamer-1.0.so.0`gst_pad_query(pad=0x00005290000673f0, query=0x0000507000093cd0) at gstpad.c:4228:9
          frame #26: 0x00007fffe9cbb6ef libgstreamer-1.0.so.0`gst_pad_peer_query(pad=0x0000529000124800, query=0x0000507000093cd0) at gstpad.c:4365:9
          frame #27: 0x00007fffe9dcae7e libgstbase-1.0.so.0`gst_base_transform_default_query(trans=0x00005190001b9050, direction=<unavailable>, query=0x0000507000093cd0) at gstbasetransform.c:1537:15
          frame #28: 0x00007fffe6fa3937 libgstcoreelements.so`gst_identity_query(base=0x00005190001b9050, direction=GST_PAD_SINK, query=0x0000507000093cd0) at gstidentity.c:1120:9
          frame #29: 0x00007fffe9cbd70d libgstreamer-1.0.so.0`gst_pad_query(pad=0x00005290001245b0, query=0x0000507000093cd0) at gstpad.c:4228:9
          frame #30: 0x00007fffe9cbb6ef libgstreamer-1.0.so.0`gst_pad_peer_query(pad=0x00005290000671a0, query=0x0000507000093cd0) at gstpad.c:4365:9
          frame #31: 0x00007fffe9dcae7e libgstbase-1.0.so.0`gst_base_transform_default_query(trans=0x00005290000ac8b0, direction=<unavailable>, query=0x0000507000093cd0) at gstbasetransform.c:1537:15
          frame #32: 0x00007fffe9cbd70d libgstreamer-1.0.so.0`gst_pad_query(pad=0x0000529000066f50, query=0x0000507000093cd0) at gstpad.c:4228:9
          frame #33: 0x00007fffe9cbb6ef libgstreamer-1.0.so.0`gst_pad_peer_query(pad=0x0000529000124360, query=0x0000507000093cd0) at gstpad.c:4365:9
          frame #34: 0x00007fffe9dc0ed2 libgstbase-1.0.so.0`gst_base_src_negotiate_unlocked [inlined] gst_base_src_prepare_allocation(basesrc=0x00005190001b8b60, caps=0x0000507000066d20) at gstbasesrc.c:3355:8
          frame #35: 0x00007fffe9dc0e9e libgstbase-1.0.so.0`gst_base_src_negotiate_unlocked(basesrc=0x00005190001b8b60) at gstbasesrc.c:3499:14
          frame #36: 0x00007fffe9dc5997 libgstbase-1.0.so.0`gst_base_src_loop(pad=0x0000529000124360) at gstbasesrc.c:2915:10
          frame #37: 0x00007fffe9cf1b9e libgstreamer-1.0.so.0`gst_task_func(task=0x0000525000017a70) at gsttask.c:399:5
          frame #38: 0x00007ffff2d4d6b4 libglib-2.0.so.0`___lldb_unnamed_symbol2565 + 116
          frame #39: 0x00007ffff2d4aa51 libglib-2.0.so.0`___lldb_unnamed_symbol2558 + 81
          frame #40: 0x0000555555623d6b qtbug-105062`asan_thread_start(void*) + 59
          frame #41: 0x00007ffff0c94ac3 libc.so.6`start_thread(arg=<unavailable>) at pthread_create.c:442:8
          frame #42: 0x00007ffff0d26850 libc.so.6`__clone3 at clone3.S:81
        thread #11, name = 'queue0:src'
          frame #0: 0x00007ffff0d1e88d libc.so.6`syscall at syscall.S:38
          frame #1: 0x00007ffff2d6ab43 libglib-2.0.so.0`g_cond_wait + 51
          frame #2: 0x00007fffe9db0a15 libgstbase-1.0.so.0`gst_base_sink_wait_preroll(sink=0x000051b00003deb0) at gstbasesink.c:2441:3
          frame #3: 0x00007fffe9db0c9c libgstbase-1.0.so.0`gst_base_sink_do_preroll(sink=0x000051b00003deb0, obj=0x000051200003ff40) at gstbasesink.c:2535:13
          frame #4: 0x00007fffe9dbd2ac libgstbase-1.0.so.0`gst_base_sink_do_sync(basesink=0x000051b00003deb0, obj=0x000051200003ff40, late=0x00007fffaaf1e6d4, step_end=0x00007fffaaf1e704) at gstbasesink.c:2743:9
          frame #5: 0x00007fffe9dba1da libgstbase-1.0.so.0`gst_base_sink_chain_unlocked(basesink=0x000051b00003deb0, pad=<unavailable>, obj=0x000051200003ff40, is_list=0) at gstbasesink.c:3926:9
          frame #6: 0x00007fffe9dbf095 libgstbase-1.0.so.0`gst_base_sink_chain_main(basesink=0x000051b00003deb0, pad=<unavailable>, obj=0x000051200003ff40, is_list=0) at gstbasesink.c:4093:12
          frame #7: 0x00007fffe9db7757 libgstbase-1.0.so.0`gst_base_sink_chain(pad=<unavailable>, parent=<unavailable>, buf=<unavailable>) at gstbasesink.c:4122:10 [artificial]
          frame #8: 0x00007fffe9cbe8c1 libgstreamer-1.0.so.0`gst_pad_chain_data_unchecked(pad=0x0000529000066d00, type=GST_PAD_PROBE_TYPE_BUFFER | GST_PAD_PROBE_TYPE_PUSH, data=0x000051200003ff40) at gstpad.c:4494:11
          frame #9: 0x00007fffe9cbf4fb libgstreamer-1.0.so.0`gst_pad_push_data(pad=0x000052900007f370, type=GST_PAD_PROBE_TYPE_BUFFER | GST_PAD_PROBE_TYPE_PUSH, data=0x000051200003ff40) at gstpad.c:4770:9
          frame #10: 0x00007fffe9cbf35d libgstreamer-1.0.so.0`gst_pad_push(pad=0x000052900007f370, buffer=0x000051200003ff40) at gstpad.c:4889:9
          frame #11: 0x00007fffe9dcedeb libgstbase-1.0.so.0`gst_base_transform_chain(pad=<unavailable>, parent=0x0000519000186b50, buffer=0x000051200025cfc0) at gstbasetransform.c:2391:15
          frame #12: 0x00007fffe9cbe8c1 libgstreamer-1.0.so.0`gst_pad_chain_data_unchecked(pad=0x000052900007f120, type=GST_PAD_PROBE_TYPE_BUFFER | GST_PAD_PROBE_TYPE_PUSH, data=0x000051200025cfc0) at gstpad.c:4494:11
          frame #13: 0x00007fffe9cbf4fb libgstreamer-1.0.so.0`gst_pad_push_data(pad=0x000052900007eed0, type=GST_PAD_PROBE_TYPE_BUFFER | GST_PAD_PROBE_TYPE_PUSH, data=0x000051200025cfc0) at gstpad.c:4770:9
          frame #14: 0x00007fffe9cbf35d libgstreamer-1.0.so.0`gst_pad_push(pad=0x000052900007eed0, buffer=0x000051200025cfc0) at gstpad.c:4889:9
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          frame #21: 0x00007ffff0c94ac3 libc.so.6`start_thread(arg=<unavailable>) at pthread_create.c:442:8
          frame #22: 0x00007ffff0d26850 libc.so.6`__clone3 at clone3.S:81
        thread #12, name = 'imageCaptureQue'
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          frame #7: 0x00007ffff0c94ac3 libc.so.6`start_thread(arg=<unavailable>) at pthread_create.c:442:8
          frame #8: 0x00007ffff0d26850 libc.so.6`__clone3 at clone3.S:81
        thread #13, name = 'gldisplay-event'
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          frame #8: 0x00007ffff0d26850 libc.so.6`__clone3 at clone3.S:81
        thread #14, name = 'gstglcontext'
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          frame #8: 0x00007ffff0d26850 libc.so.6`__clone3 at clone3.S:81
        thread #15, name = 'pool-qtbug-1050'
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          frame #8: 0x00007ffff0d26850 libc.so.6`__clone3 at clone3.S:81
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          frame #5: 0x00007ffff0d26850 libc.so.6`__clone3 at clone3.S:81
        thread #17, name = 'Thread (pooled)'
          frame #0: 0x00007ffff0c91117 libc.so.6`__GI___futex_abstimed_wait_cancelable64 at futex-internal.c:57:12
          frame #1: 0x00007ffff0c910e9 libc.so.6`__GI___futex_abstimed_wait_cancelable64 at futex-internal.c:87:9
          frame #2: 0x00007ffff0c910e9 libc.so.6`__GI___futex_abstimed_wait_cancelable64(futex_word=0x000050800004e270, expected=0, clockid=<unavailable>, abstime=0x00007fffa1b87cc0, private=<unavailable>) at futex-internal.c:139:10
          frame #3: 0x00007ffff0c93e9b libc.so.6`___pthread_cond_timedwait64 at pthread_cond_wait.c:503:10
          frame #4: 0x00007ffff0c93dc0 libc.so.6`___pthread_cond_timedwait64(cond=0x000050800004e248, mutex=0x000050800004e220, abstime=0x00007fffa1b87cc0) at pthread_cond_wait.c:652:10
          frame #5: 0x00007ffff1b95973 libQt6Core.so.6`QWaitConditionPrivate::wait_relative(this=0x000050800004e220, deadline=(t1 = 266113052370566, t2 = 0, type = 1)) at qwaitcondition_unix.cpp:92:16
          frame #6: 0x00007ffff1b68f3d libQt6Core.so.6`QWaitConditionPrivate::wait(this=0x000050800004e220, deadline=(t1 = 266113052370566, t2 = 0, type = 1)) at qwaitcondition_unix.cpp:100:24
          frame #7: 0x00007ffff1a79327 libQt6Core.so.6`QWaitCondition::wait(this=0x000050400008aba0, mutex=0x0000512000177838, deadline=(t1 = 266113052370566, t2 = 0, type = 1)) at qwaitcondition_unix.cpp:180:27
          frame #8: 0x00007ffff1a789d4 libQt6Core.so.6`QThreadPoolThread::run(this=0x000050400008ab90) at qthreadpool.cpp:116:23
          frame #9: 0x00007ffff1d42d9a libQt6Core.so.6`QThreadPrivate::start(void*)::$_0::operator()(this=0x00007fffa1c85080) const at qthread_unix.cpp:326:14
          frame #10: 0x00007ffff1d0f995 libQt6Core.so.6`void (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::$_0>(t=0x00007fffa1c85080) at qthread_unix.cpp:262:9
          frame #11: 0x00007ffff1d0f64c libQt6Core.so.6`QThreadPrivate::start(arg=0x000050400008ab90) at qthread_unix.cpp:285:5
          frame #12: 0x0000555555623d6b qtbug-105062`asan_thread_start(void*) + 59
          frame #13: 0x00007ffff0c94ac3 libc.so.6`start_thread(arg=<unavailable>) at pthread_create.c:442:8
          frame #14: 0x00007ffff0d26850 libc.so.6`__clone3 at clone3.S:81
        thread #18, name = 'Thread (pooled)'
          frame #0: 0x00007ffff0c91117 libc.so.6`__GI___futex_abstimed_wait_cancelable64 at futex-internal.c:57:12
          frame #1: 0x00007ffff0c910e9 libc.so.6`__GI___futex_abstimed_wait_cancelable64 at futex-internal.c:87:9
          frame #2: 0x00007ffff0c910e9 libc.so.6`__GI___futex_abstimed_wait_cancelable64(futex_word=0x000050800004e370, expected=0, clockid=<unavailable>, abstime=0x00007fffa107ee40, private=<unavailable>) at futex-internal.c:139:10
          frame #3: 0x00007ffff0c93e9b libc.so.6`___pthread_cond_timedwait64 at pthread_cond_wait.c:503:10
          frame #4: 0x00007ffff0c93dc0 libc.so.6`___pthread_cond_timedwait64(cond=0x000050800004e348, mutex=0x000050800004e320, abstime=0x00007fffa107ee40) at pthread_cond_wait.c:652:10
          frame #5: 0x00007ffff1b95973 libQt6Core.so.6`QWaitConditionPrivate::wait_relative(this=0x000050800004e320, deadline=(t1 = 266113052357977, t2 = 0, type = 1)) at qwaitcondition_unix.cpp:92:16
          frame #6: 0x00007ffff1b68f3d libQt6Core.so.6`QWaitConditionPrivate::wait(this=0x000050800004e320, deadline=(t1 = 266113052357977, t2 = 0, type = 1)) at qwaitcondition_unix.cpp:100:24
          frame #7: 0x00007ffff1a79327 libQt6Core.so.6`QWaitCondition::wait(this=0x000050400008a820, mutex=0x0000512000177838, deadline=(t1 = 266113052357977, t2 = 0, type = 1)) at qwaitcondition_unix.cpp:180:27
          frame #8: 0x00007ffff1a789d4 libQt6Core.so.6`QThreadPoolThread::run(this=0x000050400008a810) at qthreadpool.cpp:116:23
          frame #9: 0x00007ffff1d42d9a libQt6Core.so.6`QThreadPrivate::start(void*)::$_0::operator()(this=0x00007fffa117c080) const at qthread_unix.cpp:326:14
          frame #10: 0x00007ffff1d0f995 libQt6Core.so.6`void (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::$_0>(t=0x00007fffa117c080) at qthread_unix.cpp:262:9
          frame #11: 0x00007ffff1d0f64c libQt6Core.so.6`QThreadPrivate::start(arg=0x000050400008a810) at qthread_unix.cpp:285:5
          frame #12: 0x0000555555623d6b qtbug-105062`asan_thread_start(void*) + 59
          frame #13: 0x00007ffff0c94ac3 libc.so.6`start_thread(arg=<unavailable>) at pthread_create.c:442:8
          frame #14: 0x00007ffff0d26850 libc.so.6`__clone3 at clone3.S:81
          ",error=""@
      

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            timblechmann tim blechmann
            timblechmann tim blechmann
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              Updated:
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              Gerrit Reviews