.
Thread 10 (LWP 2681):
#0  0x00007f1967c7b10d in poll () at ../sysdeps/unix/syscall-template.S:84
No locals.
#1  0x00007f1960541576 in ?? () from /tmp/apport_sandbox_SxKuCv/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f1960541902 in g_main_loop_run () from /tmp/apport_sandbox_SxKuCv/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f1950109456 in ?? () from /tmp/apport_sandbox_SxKuCv/usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
No symbol table info available.
#4  0x00007f1960568f65 in ?? () from /tmp/apport_sandbox_SxKuCv/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f19662de6ca in start_thread (arg=0x7f1940acd700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7f1940acd700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139746435979008, -66587172693457990, 0, 140723109573647, 139746435979712, 139746435979008, 81607986996462522, 81525533562127290}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007f1967c870ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105
No locals.
.
Thread 9 (LWP 2676):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007f19487b5edb in cnd_wait (mtx=0x558c3bab7b48, cond=0x558c3bab7b70) at ../../../../include/c11/threads_posix.h:159
No locals.
#2  util_queue_thread_func (input=input@entry=0x558c3babd2f0) at ../../../../src/gallium/auxiliary/util/u_queue.c:138
        job = <optimized out>
        queue = 0x558c3bab7b40
        thread_index = 0
#3  0x00007f19487b5c07 in impl_thrd_routine (p=<optimized out>) at ../../../../include/c11/threads_posix.h:87
        pack = {func = 0x7f19487b5e20 <util_queue_thread_func>, arg = 0x558c3babd2f0}
#4  0x00007f19662de6ca in start_thread (arg=0x7f1943b76700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7f1943b76700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139746487002880, -66587172693457990, 0, 140723109571519, 139746487003584, 139746487002880, 81601625613026234, 81525533562127290}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#5  0x00007f1967c870ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105
No locals.
.
Thread 8 (LWP 2682):
#0  0x00007f1967c7b10d in poll () at ../sysdeps/unix/syscall-template.S:84
No locals.
#1  0x00007f1960541576 in ?? () from /tmp/apport_sandbox_SxKuCv/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f196054168c in g_main_context_iteration () from /tmp/apport_sandbox_SxKuCv/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f19688b7f0f in QEventDispatcherGlib::processEvents (this=0x7f192c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
        d = 0x7f192c0008e0
        canWait = true
        savedFlags = {i = 0}
        result = <optimized out>
#4  0x00007f196886188a in QEventLoop::exec (this=this@entry=0x7f19339ddc90, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
        d = 0x7f192c001d90
        locker = {val = 94060786409008}
        ref = {d = 0x7f192c001d90, locker = @0x7f19339ddc10, exceptionCaught = true}
#5  0x00007f196868efe3 in QThread::exec (this=this@entry=0x7f196af90d20 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:507
        d = 0x558c3bc2ddc0
        locker = {val = 94060786409008}
        eventLoop = {<QObject> = {_vptr.QObject = 0x7f1968cab3d8 <vtable for QEventLoop+16>, static staticMetaObject = {d = {superdata = 0x0, stringdata = 0x7f19689bbc00 <qt_meta_stringdata_QObject>, data = 0x7f19689bbae0 <qt_meta_data_QObject>, static_metacall = 0x7f1968897340 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {d = 0x7f192c001d90}, static staticQtMetaObject = {d = {superdata = 0x0, stringdata = 0x7f1968a05e20 <qt_meta_stringdata_Qt>, data = 0x7f1968a03360 <qt_meta_data_Qt>, static_metacall = 0x0, relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {superdata = 0x7f1968ca28e0 <QObject::staticMetaObject>, stringdata = 0x7f1968a1d1c0 <qt_meta_stringdata_QEventLoop>, data = 0x7f1968a1d160 <qt_meta_data_QEventLoop>, static_metacall = 0x7f1968908d60 <QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
        returnCode = <optimized out>
#6  0x00007f196ad1f5c5 in QDBusConnectionManager::run (this=0x7f196af90d20 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:178
        locker = <optimized out>
#7  0x00007f1968693c98 in QThreadPrivate::start (arg=0x7f196af90d20 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:368
        __clframe = {__cancel_routine = 0x7f1968692d30 <QThreadPrivate::finish(void*)>, __cancel_arg = 0x7f196af90d20 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>, __do_it = 1, __cancel_type = <optimized out>}
        thr = 0x7f196af90d20 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>
        data = 0x558c3bc2de70
#8  0x00007f19662de6ca in start_thread (arg=0x7f19339de700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7f19339de700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139746216896256, -66587172693457990, 0, 140723109574927, 139746216896960, 139746216896256, 81355519691998138, 81525533562127290}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#9  0x00007f1967c870ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105
No locals.
.
Thread 7 (LWP 2680):
#0  0x00007f1967c7b10d in poll () at ../sysdeps/unix/syscall-template.S:84
No locals.
#1  0x00007f1960541576 in ?? () from /tmp/apport_sandbox_SxKuCv/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#2  0x00007f196054168c in g_main_context_iteration () from /tmp/apport_sandbox_SxKuCv/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#3  0x00007f19605416d1 in ?? () from /tmp/apport_sandbox_SxKuCv/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#4  0x00007f1960568f65 in ?? () from /tmp/apport_sandbox_SxKuCv/lib/x86_64-linux-gnu/libglib-2.0.so.0
No symbol table info available.
#5  0x00007f19662de6ca in start_thread (arg=0x7f19412ce700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7f19412ce700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139746444371712, -66587172693457990, 0, 140723109573295, 139746444372416, 139746444371712, 81606886947963834, 81525533562127290}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007f1967c870ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105
No locals.
.
Thread 6 (LWP 2678):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007f19487b5edb in cnd_wait (mtx=0x558c3bab7b48, cond=0x558c3bab7b70) at ../../../../include/c11/threads_posix.h:159
No locals.
#2  util_queue_thread_func (input=input@entry=0x558c3bac00f0) at ../../../../src/gallium/auxiliary/util/u_queue.c:138
        job = <optimized out>
        queue = 0x558c3bab7b40
        thread_index = 2
#3  0x00007f19487b5c07 in impl_thrd_routine (p=<optimized out>) at ../../../../include/c11/threads_posix.h:87
        pack = {func = 0x7f19487b5e20 <util_queue_thread_func>, arg = 0x558c3bac00f0}
#4  0x00007f19662de6ca in start_thread (arg=0x7f1942b74700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7f1942b74700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139746470217472, -66587172693457990, 0, 140723109571519, 139746470218176, 139746470217472, 81603827857507258, 81525533562127290}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#5  0x00007f1967c870ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105
No locals.
.
Thread 5 (LWP 2677):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007f19487b5edb in cnd_wait (mtx=0x558c3bab7b48, cond=0x558c3bab7b70) at ../../../../include/c11/threads_posix.h:159
No locals.
#2  util_queue_thread_func (input=input@entry=0x558c3babfea0) at ../../../../src/gallium/auxiliary/util/u_queue.c:138
        job = <optimized out>
        queue = 0x558c3bab7b40
        thread_index = 1
#3  0x00007f19487b5c07 in impl_thrd_routine (p=<optimized out>) at ../../../../include/c11/threads_posix.h:87
        pack = {func = 0x7f19487b5e20 <util_queue_thread_func>, arg = 0x558c3babfea0}
#4  0x00007f19662de6ca in start_thread (arg=0x7f1943375700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7f1943375700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139746478610176, -66587172693457990, 0, 140723109571519, 139746478610880, 139746478610176, 81602725661524922, 81525533562127290}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#5  0x00007f1967c870ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105
No locals.
.
Thread 4 (LWP 2675):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007f19487b5edb in cnd_wait (mtx=0x558c3bab6668, cond=0x558c3bab6690) at ../../../../include/c11/threads_posix.h:159
No locals.
#2  util_queue_thread_func (input=input@entry=0x558c3ba93520) at ../../../../src/gallium/auxiliary/util/u_queue.c:138
        job = <optimized out>
        queue = 0x558c3bab6660
        thread_index = 0
#3  0x00007f19487b5c07 in impl_thrd_routine (p=<optimized out>) at ../../../../include/c11/threads_posix.h:87
        pack = {func = 0x7f19487b5e20 <util_queue_thread_func>, arg = 0x558c3ba93520}
#4  0x00007f19662de6ca in start_thread (arg=0x7f19445b6700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7f19445b6700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139746497750784, -66587172693457990, 0, 140723109571567, 139746497751488, 139746497750784, 81601247655904186, 81525533562127290}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#5  0x00007f1967c870ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105
No locals.
.
Thread 3 (LWP 2674):
#0  0x00007f1967c7b10d in poll () at ../sysdeps/unix/syscall-template.S:84
No locals.
#1  0x00007f195fc78c62 in _xcb_conn_wait () from /tmp/apport_sandbox_SxKuCv/usr/lib/x86_64-linux-gnu/libxcb.so.1
No symbol table info available.
#2  0x00007f195fc7a8d7 in xcb_wait_for_event () from /tmp/apport_sandbox_SxKuCv/usr/lib/x86_64-linux-gnu/libxcb.so.1
No symbol table info available.
#3  0x00007f1955909c49 in QXcbEventReader::run (this=0x558c3b99b440) at qxcbconnection.cpp:1343
        event = <optimized out>
#4  0x00007f1968693c98 in QThreadPrivate::start (arg=0x558c3b99b440) at thread/qthread_unix.cpp:368
        __clframe = {__cancel_routine = 0x7f1968692d30 <QThreadPrivate::finish(void*)>, __cancel_arg = 0x558c3b99b440, __do_it = 1, __cancel_type = <optimized out>}
        thr = 0x558c3b99b440
        data = 0x558c3b99b7a0
#5  0x00007f19662de6ca in start_thread (arg=0x7f195337e700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7f195337e700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139746747082496, -66587172693457990, 0, 140723109573791, 139746747083200, 139746747082496, 81567536457597882, 81525533562127290}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#6  0x00007f1967c870ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105
No locals.
.
Thread 2 (LWP 2679):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
No locals.
#1  0x00007f19487b5edb in cnd_wait (mtx=0x558c3bab7b48, cond=0x558c3bab7b70) at ../../../../include/c11/threads_posix.h:159
No locals.
#2  util_queue_thread_func (input=input@entry=0x558c3bac0340) at ../../../../src/gallium/auxiliary/util/u_queue.c:138
        job = <optimized out>
        queue = 0x558c3bab7b40
        thread_index = 3
#3  0x00007f19487b5c07 in impl_thrd_routine (p=<optimized out>) at ../../../../include/c11/threads_posix.h:87
        pack = {func = 0x7f19487b5e20 <util_queue_thread_func>, arg = 0x558c3bac0340}
#4  0x00007f19662de6ca in start_thread (arg=0x7f1942373700) at pthread_create.c:333
        __res = <optimized out>
        pd = 0x7f1942373700
        now = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139746461824768, -66587172693457990, 0, 140723109571519, 139746461825472, 139746461824768, 81604927906005946, 81525533562127290}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
        not_first_call = <optimized out>
        pagesize_m1 = <optimized out>
        sp = <optimized out>
        freesize = <optimized out>
        __PRETTY_FUNCTION__ = "start_thread"
#5  0x00007f1967c870ff in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:105
No locals.
.
Thread 1 (LWP 2673):
#0  IA__gdk_display_open (display_name=<optimized out>) at ./gdk/x11/gdkdisplay-x11.c:173
        xdisplay = 0x558c3be5e2d0
        display = <optimized out>
        display_x11 = <optimized out>
        attr = {title = 0x62696c2f73656c75 <error: Cannot access memory at address 0x62696c2f73656c75>, event_mask = 762016865, x = 1684632162, y = 0, width = 0, height = 0, wclass = GDK_INPUT_OUTPUT, visual = 0x0, colormap = 0x558c3be5b2c0, window_type = 1000, cursor = 0x7ffca6f53c00, wmclass_name = 0x7ffca6f53c30 " \311\344;\214U", wmclass_class = 0x7f1967c0518c <__GI___libc_free+76> "H\203\304([]A\\A]\303f\017\037\204", override_redirect = 1004909248, type_hint = 21900}
        argc = <optimized out>
        argv = {0x1 <error: Cannot access memory at address 0x1>}
        sm_client_id = <optimized out>
        class_hint = <optimized out>
        pid = 0
        i = <optimized out>
        ignore = 0
        maj = 0
        min = 0
#1  0x00007f1931edcfa2 in IA__gdk_display_open_default_libgtk_only () at ./gdk/gdk.c:324
        display = 0x0
        display = 0x0
#2  0x00007f19322a63d5 in IA__gtk_init_check (argv=<optimized out>, argc=<optimized out>) at ./gtk/gtkmain.c:1020
        argc = <optimized out>
        argv = <optimized out>
#3  IA__gtk_init (argc=<optimized out>, argv=<optimized out>) at ./gtk/gtkmain.c:1067
No locals.
#4  0x00007f19400ae4f5 in QGtkStylePrivate::initGtkWidgets (this=0x558c3be587a0) at qgtkstyle_p.cpp:276
        ruid = <optimized out>
        rgid = 1000
        euid = <optimized out>
        egid = <optimized out>
        qt_x_errhandler = 0x7f1955907740 <nullErrorHandler(Display*, XErrorEvent*)>
        gtkWindow = <optimized out>
        widgetPath = {m_size = 1004454832, m_data = 0x7f196889763b <QObject::QObject(QObjectPrivate&, QObject*)+155> "H\213\005.YA"}
        this = 0x558c3be587a0
        ruid = <optimized out>
        rgid = 1000
        euid = <optimized out>
        egid = <optimized out>
#5  0x00007f19400afbcd in QGtk2StylePlugin::create (this=<optimized out>, key=...) at plugin.cpp:51
No locals.
#6  0x00007f196992103b in qLoadPlugin<QStyle, QStylePlugin> (key=..., loader=<optimized out>) at ../../include/QtCore/5.7.1/QtCore/private/../../../../../src/corelib/plugin/qfactoryloader_p.h:103
        result = <optimized out>
        factoryObject = <optimized out>
        index = <optimized out>
#7  QStyleFactory::create (key=...) at styles/qstylefactory.cpp:158
        ret = 0x0
        style = {static null = {<No data fields>}, d = 0x558c3be4c920}
#8  0x0000558c39e18b76 in MainWindow::doChangeStyle() ()
No symbol table info available.
#9  0x0000558c39e20cb4 in MainWindow::MainWindow(QString const&, QUrl const&, QString const&, QWidget*) ()
No symbol table info available.
#10 0x0000558c39a709c1 in main ()
No symbol table info available.