Thread 3 (Thread 0xeeaa1b40 (LWP 30731)):
#0  0xf777db29 in __kernel_vsyscall ()
No symbol table info available.
#1  0xf591306b in poll () from /lib/libc.so.6
No symbol table info available.
#2  0xf5cf6dca in wl_display_poll (display=0x8065150, events=1) at src/wayland-client.c:1717
        ret = 0
        pfd = {{fd = 3, events = 1, revents = 0}}
#3  0xf5cf6ea9 in wl_display_dispatch_queue (display=0x8065150, queue=0x80651bc) at src/wayland-client.c:1790
        ret = 0
#4  0xf5cf6f6d in wl_display_dispatch (display=0x8065150) at src/wayland-client.c:1865
No locals.
#5  0xf71970cc in QtWaylandClient::QWaylandDisplay::blockingReadEvents() () from /usr/lib/libQt5WaylandClient.so.5
No symbol table info available.
#6  0xf719b53b in QtWaylandClient::QWaylandWindow::waitForFrameSync() () from /usr/lib/libQt5WaylandClient.so.5
No symbol table info available.
#7  0xf5d2ea29 in QtWaylandClient::QWaylandXCompositeGLXContext::swapBuffers(QPlatformSurface*) () at ../../../../hardwareintegration/client/xcomposite-glx/qwaylandxcompositeglxcontext.cpp:96
        w = 0x80a6cf0
        size = {wd = 500, ht = 500}
#8  0xf6bd6466 in QOpenGLContext::swapBuffers(QSurface*) () at kernel/qopenglcontext.cpp:1115
        d = 0x814eeb0
        surfaceHandle = 0x80a6cf8
#9  0xf73cc988 in ?? () from /usr/lib/libQt5Quick.so.5
No symbol table info available.
#10 0xf73d07a6 in ?? () from /usr/lib/libQt5Quick.so.5
No symbol table info available.
#11 0xf5e4e35b in QThreadPrivate::start(void*) () at thread/qthread_unix.cpp:361
        thr = 0x806dad0
        data = <optimized out>
        __clframe = {__cancel_routine = 0xf5e4d770 <QThreadPrivate::finish(void*)>, __cancel_arg = 0x806dad0, __do_it = 1, __cancel_type = <optimized out>}
#12 0xf5d103ec in start_thread (arg=<optimized out>) at pthread_create.c:463
        pd = <optimized out>
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {-170762240, 0, -170762240, -290843672, 1699397766, -1821652304}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
#13 0xf591f006 in clone () from /lib/libc.so.6
No symbol table info available.

Thread 2 (Thread 0xf2ed0b40 (LWP 30728)):
#0  0xf777db29 in __kernel_vsyscall ()
No symbol table info available.
#1  0xf591306b in poll () from /lib/libc.so.6
No symbol table info available.
#2  0xf562385c in g_poll () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#3  0xf5613c83 in ?? () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#4  0xf56135a6 in ?? () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#5  0xf561369a in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#6  0xf6062009 in QEventDispatcherGlib::processEvents (this=0xf25005d0, flags=...) at kernel/qeventdispatcher_glib.cpp:422
        d = 0xf25005e0
        canWait = true
        savedFlags = {i = 0}
        result = <optimized out>
#7  0xf6008397 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at ../../include/QtCore/../../src/corelib/global/qflags.h:71
        d = 0xf2504730
        locker = {val = 134678656}
        ref = {d = 0xf2504730, locker = @0xf2ed0238, exceptionCaught = true}
        app = <optimized out>
#8  0xf5e4cde1 in QThread::exec() () at thread/qthread.cpp:531
        d = 0x8070840
        locker = <optimized out>
        eventLoop = {<QObject> = {_vptr.QObject = 0xf63629fc <vtable for QEventLoop+8>, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0xf61edca0 <qt_meta_stringdata_QObject>, data = 0xf61edb80 <qt_meta_data_QObject>, static_metacall = 0xf603c1c0 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0xf2504730}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0xf61f0b80 <qt_meta_stringdata_Qt>, data = 0xf61edd80 <qt_meta_data_Qt>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0xf635de54 <QObject::staticMetaObject>, stringdata = 0xf61e8d80 <qt_meta_stringdata_QEventLoop>, data = 0xf61e8d20 <qt_meta_data_QEventLoop>, static_metacall = 0xf6008050 <QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
        returnCode = <optimized out>
#9  0xf686bf8f in ?? () from /usr/lib/libQt5Qml.so.5
No symbol table info available.
#10 0xf5e4e35b in QThreadPrivate::start(void*) () at thread/qthread_unix.cpp:361
        thr = 0x80714d0
        data = <optimized out>
        __clframe = {__cancel_routine = 0xf5e4d770 <QThreadPrivate::finish(void*)>, __cancel_arg = 0x80714d0, __do_it = 1, __cancel_type = <optimized out>}
#11 0xf5d103ec in start_thread (arg=<optimized out>) at pthread_create.c:463
        pd = <optimized out>
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {-170762240, 0, -170762240, -219347992, -345325378, -1821652304}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = 0
#12 0xf591f006 in clone () from /lib/libc.so.6
No symbol table info available.

Thread 1 (Thread 0xf3205280 (LWP 30720)):
#0  0xf777db29 in __kernel_vsyscall ()
No symbol table info available.
#1  0xf5d166ff in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x814d860) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
        resultvar = <optimized out>
        __ret = <optimized out>
        oldtype = 0
        err = <optimized out>
#2  __pthread_cond_wait_common (abstime=0x0, mutex=0x814d820, cond=0x814d838) at pthread_cond_wait.c:502
        spin = 0
        buffer = {__routine = 0xf5d16390 <__condvar_cleanup_waiting>, __arg = 0xffdb6e6c, __canceltype = -174024712, __prev = 0x0}
        cbuffer = {wseq = 0, cond = 0x814d838, mutex = 0x814d820, private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        signals = <optimized out>
        result = 0
        wseq = 0
        seq = 0
#3  __pthread_cond_wait (cond=0x814d838, mutex=0x814d820) at pthread_cond_wait.c:655
No locals.
#4  0xf5e54aa3 in wait (deadline=..., this=0x814d820) at thread/qwaitcondition_unix.cpp:146
        code = <optimized out>
#5  QWaitCondition::wait(QMutex*, QDeadlineTimer) () at thread/qwaitcondition_unix.cpp:225
No locals.
#6  0xf5e54b59 in QWaitCondition::wait (this=0x806daf8, mutex=0x806daf4, time=4294967295) at thread/qwaitcondition_unix.cpp:209
No locals.
#7  0xf73cd5b5 in ?? () from /usr/lib/libQt5Quick.so.5
No symbol table info available.
#8  0xf73cfb8a in ?? () from /usr/lib/libQt5Quick.so.5
No symbol table info available.
#9  0xf73d01bd in ?? () from /usr/lib/libQt5Quick.so.5
No symbol table info available.
#10 0xf6ba1897 in QWindow::event (this=0x80a5620, ev=0xffdb72b4) at kernel/qwindow.cpp:2255
No locals.
#11 0xf7433813 in QQuickWindow::event(QEvent*) () from /usr/lib/libQt5Quick.so.5
No symbol table info available.
#12 0xf6009deb in doNotify (event=0xffdb72b4, receiver=0x80a5620) at ../../include/QtCore/../../src/corelib/kernel/qobject.h:142
No locals.
#13 QCoreApplication::notify(QObject*, QEvent*) [clone .localalias.132] () at kernel/qcoreapplication.cpp:1171
No locals.
#14 0xf6b90c3e in QGuiApplication::notify (this=0xffdb7a6c, object=0x80a5620, event=0xffdb72b4) at kernel/qguiapplication.cpp:1791
No locals.
#15 0xf6009f8a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at ../../include/QtCore/../../src/corelib/kernel/qobject.h:142
        selfRequired = <optimized out>
        result = false
        cbdata = {0x80a5620, 0xffdb72b4, 0xffdb7223}
        d = <optimized out>
        threadData = 0x8060060
        scopeLevelCounter = {threadData = 0x8060060}
#16 0xf600a238 in QCoreApplication::sendSpontaneousEvent (receiver=0x80a5620, event=0xffdb72b4) at kernel/qcoreapplication.cpp:1499
No locals.
#17 0xf6b967ec in QGuiApplicationPrivate::processExposeEvent (e=0x80c0550) at kernel/qguiapplication.cpp:3066
        window = 0x80a5620
        p = <optimized out>
        exposeEvent = {<QEvent> = {_vptr.QEvent = 0xf7146450 <vtable for QExposeEvent+8>, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0xf61e9c20 <qt_meta_stringdata_QEvent>, data = 0xf61e9660 <qt_meta_data_QEvent>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}, d = 0x0, t = 206, posted = 0, spont = 1, m_accept = 1, reserved = 7857}, rgn = {d = 0x80b9a40, static shared_empty = {ref = {atomic = {_q_value = {<std::__atomic_base<int>> = {static _S_alignment = 4, _M_i = -1}, static is_always_lock_free = true}}}, qt_rgn = 0xf7151940 <qrp>}}}
#18 0xf6b96ab9 in QGuiApplicationPrivate::processWindowSystemEvent (e=0x80c0550) at kernel/qguiapplication.cpp:1902
No locals.
#19 0xf6b6d44c in QWindowSystemInterface::sendWindowSystemEvents (flags=...) at kernel/qwindowsysteminterface.cpp:1151
        event = 0x80c0550
        nevents = 5
#20 0xf71d24de in ?? () from /usr/lib/libQt5WaylandClient.so.5
No symbol table info available.
#21 0xf5612652 in ?? () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#22 0xf56133ee in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#23 0xf56135d2 in ?? () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#24 0xf561369a in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
No symbol table info available.
#25 0xf606208b in QEventDispatcherGlib::processEvents (this=0x806d220, flags=...) at kernel/qeventdispatcher_glib.cpp:422
        d = 0x806d230
        canWait = true
        savedFlags = {i = 0}
        result = <optimized out>
#26 0xf71d2661 in ?? () from /usr/lib/libQt5WaylandClient.so.5
No symbol table info available.
#27 0xf71972cf in QtWaylandClient::QWaylandDisplay::forceRoundTrip() () from /usr/lib/libQt5WaylandClient.so.5
No symbol table info available.
#28 0xf7198000 in QtWaylandClient::QWaylandDisplay::registry_global(unsigned int, QString const&, unsigned int) () from /usr/lib/libQt5WaylandClient.so.5
No symbol table info available.
#29 0xf71bff9f in QtWayland::wl_registry::handle_global(void*, wl_registry*, unsigned int, char const*, unsigned int) () from /usr/lib/libQt5WaylandClient.so.5
No symbol table info available.
#30 0xf33b7c7a in ffi_call_SYSV () from /usr/lib/../lib/libffi.so.6
No symbol table info available.
#31 0xf33b73de in ffi_call () from /usr/lib/../lib/libffi.so.6
No symbol table info available.
#32 0xf5cf8fdf in wl_closure_invoke (closure=0x815b1c0, flags=1, target=0x8062f20, opcode=0, data=0x8064b18) at src/connection.c:996
        count = 3
        cif = {abi = FFI_SYSV, nargs = 5, arg_types = 0xffdb7698, rtype = 0xf33b8290 <ffi_type_void>, bytes = 32, flags = 0}
        ffi_types = {0xf33b82fc <ffi_type_pointer>, 0xf33b82fc <ffi_type_pointer>, 0xf33b82cc <ffi_type_uint32>, 0xf33b82fc <ffi_type_pointer>, 0xf33b82cc <ffi_type_uint32>, 0x878, 0xf5cff000, 0x8064b10, 0xffdb76d8, 0xf5cf7828 <wl_connection_copy+34>, 0x8065220, 0x815b22c, 0x20, 0xf5cf7811 <wl_connection_copy+11>, 0xc, 0xf5cf7f0d <arg_count_for_signature+11>, 0xffdb7738, 0xf5cf8a14 <wl_connection_demarshal+1242>, 0x8065220, 0xf5cf7e9c <get_next_argument+8>, 0xffdb7728, 0xf5cf5152 <validate_closure_objects+71>}
        ffi_args = {0xffdb7730, 0xffdb7728, 0x815b1d0, 0x815b1d4, 0x815b1d8, 0x0, 0xffdb7664, 0xf5d1c114 <__libc_recvmsg+68>, 0xf77a8a9c, 0x3, 0xffdb774c, 0x40000040, 0x0, 0xf5cf7e9c <get_next_argument+8>, 0xffdb76a8, 0xf5cf8178 <wl_closure_clear_fds+52>, 0xf5cfaadd, 0xf596abbd, 0xf5cff000, 0xf5cf760b <wl_buffer_copy+74>, 0x815b22c, 0x8065a98}
        implementation = 0xf7253814 <QtWayland::wl_registry::m_wl_registry_listener>
#33 0xf5cf6957 in dispatch_event (display=0x8065150, queue=0x80651bc) at src/wayland-client.c:1434
        closure = 0x815b1c0
        proxy = 0x8062f20
        opcode = 0
        proxy_destroyed = false
#34 0xf5cf6c4f in dispatch_queue (display=0x8065150, queue=0x80651bc) at src/wayland-client.c:1580
        count = 0
#35 0xf5cf6f28 in wl_display_dispatch_queue_pending (display=0x8065150, queue=0x80651bc) at src/wayland-client.c:1822
        ret = -170955818
#36 0xf5cf6f9a in wl_display_dispatch_pending (display=0x8065150) at src/wayland-client.c:1885
No locals.
#37 0xf719705e in QtWaylandClient::QWaylandDisplay::flushRequests() () from /usr/lib/libQt5WaylandClient.so.5
No symbol table info available.
#38 0xf71c2b51 in ?? () from /usr/lib/libQt5WaylandClient.so.5
No symbol table info available.
#39 0xf60351d0 in QMetaObject::activate(QObject*, int, int, void**) () at kernel/qobject.cpp:3795
        methodIndex = <optimized out>
        method_relative = <optimized out>
        callFunction = <optimized out>
        receiver = 0x8064b10
        receiverInSameThread = <optimized out>
        sw = {receiver = 0x8064b10, previousSender = 0x0, currentSender = {sender = 0x806d220, signal = 3, ref = 1}, switched = true}
        c = <optimized out>
        locker = <optimized out>
        connectionLists = {connectionLists = 0x80646b0}
        list = <optimized out>
        currentThreadId = <optimized out>
        signal_index = <optimized out>
        empty_argv = {0x0}
#40 0xf60357bd in QMetaObject::activate (sender=0x806d220, m=0xf63629a8 <QAbstractEventDispatcher::staticMetaObject>, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3648
No locals.
#41 0xf60063e2 in QAbstractEventDispatcher::aboutToBlock (this=0x806d220) at .moc/moc_qabstracteventdispatcher.cpp:142
No locals.
#42 0xf6061fe0 in QEventDispatcherGlib::processEvents (this=0x806d220, flags=...) at kernel/qeventdispatcher_glib.cpp:409
        d = 0x806d230
        canWait = true
        savedFlags = <optimized out>
        result = <optimized out>
#43 0xf71d2661 in ?? () from /usr/lib/libQt5WaylandClient.so.5
No symbol table info available.
#44 0xf6008397 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at ../../include/QtCore/../../src/corelib/global/qflags.h:71
        d = 0x8149a80
        locker = {val = 134575056}
        ref = {d = 0x8149a80, locker = @0xffdb79a8, exceptionCaught = true}
        app = <optimized out>
#45 0xf6010fdc in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1400
        threadData = 0x8060060
        eventLoop = {<QObject> = {_vptr.QObject = 0xf63629fc <vtable for QEventLoop+8>, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0xf61edca0 <qt_meta_stringdata_QObject>, data = 0xf61edb80 <qt_meta_data_QObject>, static_metacall = 0xf603c1c0 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x8149a80}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0xf61f0b80 <qt_meta_stringdata_Qt>, data = 0xf61edd80 <qt_meta_data_Qt>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0xf635de54 <QObject::staticMetaObject>, stringdata = 0xf61e8d80 <qt_meta_stringdata_QEventLoop>, data = 0xf61e8d20 <qt_meta_data_QEventLoop>, static_metacall = 0xf6008050 <QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
        returnCode = <optimized out>
#46 0xf6b8ad51 in QGuiApplication::exec () at kernel/qguiapplication.cpp:1779
No locals.
#47 0x0804a4d3 in main (argc=1, argv=0xffdb7b44) at ../../custom-extension/qml-client/main.cpp:67
        app = {<QCoreApplication> = {<QObject> = {_vptr.QObject = 0xf7146028 <vtable for QGuiApplication+8>, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0xf61edca0 <qt_meta_stringdata_QObject>, data = 0xf61edb80 <qt_meta_data_QObject>, static_metacall = 0xf603c1c0 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x805fdf0}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0xf61f0b80 <qt_meta_stringdata_Qt>, data = 0xf61edd80 <qt_meta_data_Qt>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0xf635de54 <QObject::staticMetaObject>, stringdata = 0xf61e9420 <qt_meta_stringdata_QCoreApplication>, data = 0xf61e9300 <qt_meta_data_QCoreApplication>, static_metacall = 0xf600bb30 <QCoreApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, static self = 0xffdb7a6c}, static staticMetaObject = {d = {superdata = 0xf6362ab8 <QCoreApplication::staticMetaObject>, stringdata = 0xf6f8ac80 <qt_meta_stringdata_QGuiApplication>, data = 0xf6f8aa00 <qt_meta_data_QGuiApplication>, static_metacall = 0xf6b8f950 <QGuiApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
        engine = <incomplete type>