Hello Rokas, I just tried to collect some more information and could reproduce the crash with Qt 5.11.1+dfsg-8.
With version 5.11.2+dfsg-3 and current 5.11.3+dfsg-2 I was not able anymore to reproduce. Can you confirm that the bug is not visible anymore on your installation? Kind regards, Bernhard (With buster/testing as of date 20181001) (gdb) bt #0 0x00007f341f02c0a6 in QV4::Value::isObject (this=0x7f3415dca9c8) at ../../include/QtQml/5.11.1/QtQml/private/../../../../../src/qml/memory/qv4heap_p.h:101 #1 QV4::Value::objectValue (this=0x7f3415dca9c8) at jsruntime/qv4value_p.h:368 #2 QV4::Value::as<QV4::Object> (this=0x7f3415dca9c8) at jsruntime/qv4managed_p.h:254 #3 QV4::Scoped<QV4::Object>::Scoped (v=..., scope=<synthetic pointer>..., this=<synthetic pointer>) at jsruntime/qv4scopedvalue_p.h:223 #4 QV4::Runtime::method_loadProperty (engine=0x5608459f1fd0, object=..., nameIndex=<optimized out>) at jsruntime/qv4runtime.cpp:726 #5 0x00007f33e9f841b8 in ?? () #6 0x00007f3415dca8f0 in ?? () #7 0x00007f3415dca908 in ?? () #8 0x00005608459f1fd0 in ?? () #9 0x0000000000000000 in ?? ()
# Stretch amd64 qemu VM 2019-01-31 approx: debian-10-buster-snapshot.debian.org https://snapshot.debian.org/archive/debian/20180901T000000Z/ debian-10-buster-debug-snapshot.debian.org https://snapshot.debian.org/archive/debian-debug/20180901T000000Z/ # snapshot deb [check-valid-until=no] http://192.168.178.25:9999/debian-10-buster-snapshot.debian.org/ buster main #deb-src [check-valid-until=no] http://192.168.178.25:9999/debian-10-buster-snapshot.debian.org/ buster main #deb [check-valid-until=no] http://192.168.178.25:9999/debian-10-buster-debug-snapshot.debian.org/ buster-debug main apt update apt dist-upgrade apt install systemd-coredump xserver-xorg lightdm openbox gcompris-qt apt install mc htop gdb strace dpkg-dev devscripts apt install gcompris-qt-dbgsym libqt5qml5-dbgsym libqt5core5a-dbgsym libglib2.0-0-dbgsym reboot [ 418.415478] gcompris-qt[15563]: segfault at c ip 00007f579cd530a6 sp 00007ffcb3f17630 error 4 in libQt5Qml.so.5.11.1[7f579cbfd000+298000] root@debian:~# coredumpctl list TIME PID UID GID SIG COREFILE EXE Thu 2019-01-31 17:48:50 CET 15563 1000 1000 11 present /usr/games/gcompris-qt root@debian:~# coredumpctl gdb 15563 PID: 15563 (gcompris-qt) UID: 1000 (benutzer) GID: 1000 (benutzer) Signal: 11 (SEGV) Timestamp: Thu 2019-01-31 17:48:49 CET (36s ago) Command Line: gcompris-qt Executable: /usr/games/gcompris-qt Control Group: /user.slice/user-1000.slice/session-4.scope Unit: session-4.scope Slice: user-1000.slice Session: 4 Owner UID: 1000 (benutzer) Boot ID: 47f6f3a26a5049c9a0846c2cb1d7d083 Machine ID: 9e5901179cfe4b73bc18669e6a6e0ab9 Hostname: debian Storage: /var/lib/systemd/coredump/core.gcompris-qt.1000.47f6f3a26a5049c9a0846c2cb1d7d083.15563.1548953329000000.lz4 Message: Process 15563 (gcompris-qt) of user 1000 dumped core. Stack trace of thread 15563: #0 0x00007f579cd530a6 _ZN3QV47Runtime19method_loadPropertyEPNS_15ExecutionEngineERKNS_5ValueEi (libQt5Qml.so.5) #1 0x00007f575aa601b8 n/a (n/a) #2 0x00007f579cd44fd1 n/a (libQt5Qml.so.5) #3 0x00007f579cd4f9bb _ZN3QV47Runtime15method_callNameEPNS_15ExecutionEngineEiPNS_5ValueEi (libQt5Qml.so.5) #4 0x00007f575aa5c0a0 n/a (n/a) #5 0x00007f579cd44fd1 n/a (libQt5Qml.so.5) #6 0x00007f579cd4f161 _ZN3QV47Runtime16method_callValueEPNS_15ExecutionEngineERKNS_5ValueEPS3_i (libQt5Qml.so.5) #7 0x00007f575aa5c6a9 n/a (n/a) #8 0x00007f579cd44fd1 n/a (libQt5Qml.so.5) #9 0x00007f579cd4f161 _ZN3QV47Runtime16method_callValueEPNS_15ExecutionEngineERKNS_5ValueEPS3_i (libQt5Qml.so.5) #10 0x00007f575aa5c6a9 n/a (n/a) #11 0x00007f579cd44fd1 n/a (libQt5Qml.so.5) #12 0x00007f579cd53665 _ZN3QV47Runtime19method_callPropertyEPNS_15ExecutionEngineEPNS_5ValueEiS4_i (libQt5Qml.so.5) #13 0x00007f579cd46bb6 n/a (libQt5Qml.so.5) #14 0x00007f579cd4f9bb _ZN3QV47Runtime15method_callNameEPNS_15ExecutionEngineEiPNS_5ValueEi (libQt5Qml.so.5) #15 0x00007f579cd46a2c n/a (libQt5Qml.so.5) #16 0x00007f579cd53665 _ZN3QV47Runtime19method_callPropertyEPNS_15ExecutionEngineEPNS_5ValueEiS4_i (libQt5Qml.so.5) #17 0x00007f579cd46bb6 n/a (libQt5Qml.so.5) #18 0x00007f579cd4f9bb _ZN3QV47Runtime15method_callNameEPNS_15ExecutionEngineEiPNS_5ValueEi (libQt5Qml.so.5) #19 0x00007f579cd46a2c n/a (libQt5Qml.so.5) #20 0x00007f579cd53665 _ZN3QV47Runtime19method_callPropertyEPNS_15ExecutionEngineEPNS_5ValueEiS4_i (libQt5Qml.so.5) #21 0x00007f579cd46bb6 n/a (libQt5Qml.so.5) #22 0x00007f579cdfe2df _ZN24QQmlJavaScriptExpression8evaluateEPN3QV48CallDataEPb (libQt5Qml.so.5) #23 0x00007f579cd90867 _ZN25QQmlBoundSignalExpression8evaluateEPPv (libQt5Qml.so.5) #24 0x00007f579cd919fb n/a (libQt5Qml.so.5) #25 0x00007f579cddb0f3 _ZN12QQmlNotifier10emitNotifyEP20QQmlNotifierEndpointPPv (libQt5Qml.so.5) #26 0x00007f579cd73eaa _ZN8QQmlData13signalEmittedEP24QAbstractDeclarativeDataP7QObjectiPPv (libQt5Qml.so.5) #27 0x00007f579bb9c0ef _ZN11QMetaObject8activateEP7QObjectiiPPv (libQt5Core.so.5) #28 0x00007f579ce68cba _ZN9QQmlTimer5eventEP6QEvent (libQt5Qml.so.5) #29 0x00007f579c4ce4a1 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5) #30 0x00007f579c4d5ae0 _ZN12QApplication6notifyEP7QObjectP6QEvent (libQt5Widgets.so.5) #31 0x00007f579bb73579 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5) #32 0x00007f579bb7656b _ZN23QCoreApplicationPrivate16sendPostedEventsEP7QObjectiP11QThreadData (libQt5Core.so.5) #33 0x00007f579bbc5c03 n/a (libQt5Core.so.5) #34 0x00007f579a0ab287 g_main_context_dispatch (libglib-2.0.so.0) #35 0x00007f579a0ab4c0 n/a (libglib-2.0.so.0) #36 0x00007f579a0ab54c g_main_context_iteration (libglib-2.0.so.0) #37 0x00007f579bbc5223 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5) #38 0x00007f5797274e51 n/a (libQt5XcbQpa.so.5) #39 0x00007f579bb7224b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5) #40 0x00007f579bb7a3c2 _ZN16QCoreApplication4execEv (libQt5Core.so.5) #41 0x00005560f4ced955 main (gcompris-qt) #42 0x00007f579b5d0b17 __libc_start_main (libc.so.6) #43 0x00005560f4cee0ca _start (gcompris-qt) Stack trace of thread 15565: #0 0x00007f579b69b739 __GI___poll (libc.so.6) #1 0x00007f579a0ab439 n/a (libglib-2.0.so.0) #2 0x00007f579a0ab54c g_main_context_iteration (libglib-2.0.so.0) #3 0x00007f579bbc5223 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5) #4 0x00007f579bb7224b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5) #5 0x00007f579b9c1176 _ZN7QThread4execEv (libQt5Core.so.5) #6 0x00007f579ce1dc75 n/a (libQt5Qml.so.5) #7 0x00007f579b9cad47 n/a (libQt5Core.so.5) #8 0x00007f579b400f2a start_thread (libpthread.so.0) #9 0x00007f579b6a5edf __clone (libc.so.6) Stack trace of thread 15564: #0 0x00007f579b69b739 __GI___poll (libc.so.6) #1 0x00007f5797afacf7 n/a (libxcb.so.1) #2 0x00007f5797afc90a xcb_wait_for_event (libxcb.so.1) #3 0x00007f57971e3159 n/a (libQt5XcbQpa.so.5) #4 0x00007f579b9cad47 n/a (libQt5Core.so.5) #5 0x00007f579b400f2a start_thread (libpthread.so.0) #6 0x00007f579b6a5edf __clone (libc.so.6) Stack trace of thread 15579: #0 0x00007f579b69b739 __GI___poll (libc.so.6) #1 0x00007f579a0ab439 n/a (libglib-2.0.so.0) #2 0x00007f579a0ab54c g_main_context_iteration (libglib-2.0.so.0) #3 0x00007f579bbc5223 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5) #4 0x00007f579bb7224b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5) #5 0x00007f579b9c1176 _ZN7QThread4execEv (libQt5Core.so.5) #6 0x00007f579ce527a5 n/a (libQt5Qml.so.5) #7 0x00007f579b9cad47 n/a (libQt5Core.so.5) #8 0x00007f579b400f2a start_thread (libpthread.so.0) #9 0x00007f579b6a5edf __clone (libc.so.6) Stack trace of thread 15577: #0 0x00007f579b69b739 __GI___poll (libc.so.6) #1 0x00007f579a0ab439 n/a (libglib-2.0.so.0) #2 0x00007f579a0ab54c g_main_context_iteration (libglib-2.0.so.0) #3 0x00007f579bbc5223 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5) #4 0x00007f579bb7224b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5) #5 0x00007f579b9c1176 _ZN7QThread4execEv (libQt5Core.so.5) #6 0x00007f5796ede545 n/a (libQt5DBus.so.5) #7 0x00007f579b9cad47 n/a (libQt5Core.so.5) #8 0x00007f579b400f2a start_thread (libpthread.so.0) #9 0x00007f579b6a5edf __clone (libc.so.6) Stack trace of thread 15570: #0 0x00007f579b406e6c futex_wait_cancelable (libpthread.so.0) #1 0x00007f5787ac31db n/a (swrast_dri.so) #2 0x00007f5787ac3137 n/a (swrast_dri.so) #3 0x00007f579b400f2a start_thread (libpthread.so.0) #4 0x00007f579b6a5edf __clone (libc.so.6) Stack trace of thread 15569: #0 0x00007f579b406e6c futex_wait_cancelable (libpthread.so.0) #1 0x00007f5787ac31db n/a (swrast_dri.so) #2 0x00007f5787ac3137 n/a (swrast_dri.so) #3 0x00007f579b400f2a start_thread (libpthread.so.0) #4 0x00007f579b6a5edf __clone (libc.so.6) Stack trace of thread 15567: #0 0x00007f579b406e6c futex_wait_cancelable (libpthread.so.0) #1 0x00007f5787ac31db n/a (swrast_dri.so) #2 0x00007f5787ac3137 n/a (swrast_dri.so) #3 0x00007f579b400f2a start_thread (libpthread.so.0) #4 0x00007f579b6a5edf __clone (libc.so.6) Stack trace of thread 15566: #0 0x00007f579b406e6c futex_wait_cancelable (libpthread.so.0) #1 0x00007f5787ac31db n/a (swrast_dri.so) #2 0x00007f5787ac3137 n/a (swrast_dri.so) #3 0x00007f579b400f2a start_thread (libpthread.so.0) #4 0x00007f579b6a5edf __clone (libc.so.6) Stack trace of thread 15572: #0 0x00007f579b406e6c futex_wait_cancelable (libpthread.so.0) #1 0x00007f5787ac31db n/a (swrast_dri.so) #2 0x00007f5787ac3137 n/a (swrast_dri.so) #3 0x00007f579b400f2a start_thread (libpthread.so.0) #4 0x00007f579b6a5edf __clone (libc.so.6) Stack trace of thread 15578: #0 0x00007f579b69b739 __GI___poll (libc.so.6) #1 0x00007f579a0ab439 n/a (libglib-2.0.so.0) #2 0x00007f579a0ab54c g_main_context_iteration (libglib-2.0.so.0) #3 0x00007f579bbc5223 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5) #4 0x00007f579bb7224b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5) #5 0x00007f579b9c1176 _ZN7QThread4execEv (libQt5Core.so.5) #6 0x00007f579b9cad47 n/a (libQt5Core.so.5) #7 0x00007f579b400f2a start_thread (libpthread.so.0) #8 0x00007f579b6a5edf __clone (libc.so.6) Stack trace of thread 15568: #0 0x00007f579b406e6c futex_wait_cancelable (libpthread.so.0) #1 0x00007f5787ac31db n/a (swrast_dri.so) #2 0x00007f5787ac3137 n/a (swrast_dri.so) #3 0x00007f579b400f2a start_thread (libpthread.so.0) #4 0x00007f579b6a5edf __clone (libc.so.6) Stack trace of thread 15571: #0 0x00007f579b406e6c futex_wait_cancelable (libpthread.so.0) #1 0x00007f5787ac31db n/a (swrast_dri.so) #2 0x00007f5787ac3137 n/a (swrast_dri.so) #3 0x00007f579b400f2a start_thread (libpthread.so.0) #4 0x00007f579b6a5edf __clone (libc.so.6) Stack trace of thread 15573: #0 0x00007f579b406e6c futex_wait_cancelable (libpthread.so.0) #1 0x00007f5787ac31db n/a (swrast_dri.so) #2 0x00007f5787ac3137 n/a (swrast_dri.so) #3 0x00007f579b400f2a start_thread (libpthread.so.0) #4 0x00007f579b6a5edf __clone (libc.so.6) GNU gdb (Debian 8.1-4) 8.1 Copyright (C) 2018 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/games/gcompris-qt...(no debugging symbols found)...done. [New LWP 15563] [New LWP 15565] [New LWP 15564] [New LWP 15579] [New LWP 15577] [New LWP 15570] [New LWP 15569] [New LWP 15567] [New LWP 15566] [New LWP 15572] [New LWP 15578] [New LWP 15568] [New LWP 15571] [New LWP 15573] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `gcompris-qt'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f579cd530a6 in QV4::Runtime::method_loadProperty(QV4::ExecutionEngine*, QV4::Value const&, int) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 [Current thread is 1 (Thread 0x7f57974be2c0 (LWP 15563))] (gdb) bt #0 0x00007f579cd530a6 in QV4::Runtime::method_loadProperty(QV4::ExecutionEngine*, QV4::Value const&, int) () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5 #1 0x00007f575aa601b8 in ?? () #2 0x00007f578ef17a10 in ?? () #3 0x00007f578ef17a28 in ?? () #4 0x00005560f6fb3720 in ?? () #5 0x0000000000000000 in ?? () (gdb) bt #0 0x00007f579cd530a6 in QV4::Value::isObject (this=0x7f578ef17ae8) at ../../include/QtQml/5.11.1/QtQml/private/../../../../../src/qml/memory/qv4heap_p.h:101 #1 QV4::Value::objectValue (this=0x7f578ef17ae8) at jsruntime/qv4value_p.h:368 #2 QV4::Value::as<QV4::Object> (this=0x7f578ef17ae8) at jsruntime/qv4managed_p.h:254 #3 QV4::Scoped<QV4::Object>::Scoped (v=..., scope=<synthetic pointer>..., this=<synthetic pointer>) at jsruntime/qv4scopedvalue_p.h:223 #4 QV4::Runtime::method_loadProperty (engine=0x5560f6fb3720, object=..., nameIndex=<optimized out>) at jsruntime/qv4runtime.cpp:726 #5 0x00007f575aa601b8 in ?? () #6 0x00007f578ef17a10 in ?? () #7 0x00007f578ef17a28 in ?? () #8 0x00005560f6fb3720 in ?? () #9 0x0000000000000000 in ?? () ############# [ 42.120010] gcompris-qt[919]: segfault at c ip 00007f341f02c0a6 sp 00007fff0a6e3d10 error 4 in libQt5Qml.so.5.11.1[7f341eed6000+298000] [ 42.120019] Code: 08 49 8d 44 24 08 48 89 47 08 49 c7 04 24 00 00 00 00 48 8b 06 48 89 c1 48 c1 e9 31 75 66 48 85 c0 74 61 48 8b 10 48 8b 52 10 <f6> 42 0c 04 74 54 49 89 04 24 48 8b 55 00 31 f6 48 root@debian:~# coredumpctl list TIME PID UID GID SIG COREFILE EXE Thu 2019-01-31 18:00:00 CET 919 1000 1000 11 present /usr/games/gcompris-qt root@debian:~# coredumpctl gdb 919 PID: 919 (gcompris-qt) UID: 1000 (benutzer) GID: 1000 (benutzer) Signal: 11 (SEGV) Timestamp: Thu 2019-01-31 17:59:58 CET (1min 58s ago) Command Line: gcompris-qt Executable: /usr/games/gcompris-qt Control Group: /user.slice/user-1000.slice/session-2.scope Unit: session-2.scope Slice: user-1000.slice Session: 2 Owner UID: 1000 (benutzer) Boot ID: 72521b85e6234488be06dcaf63ac1b7c Machine ID: 9e5901179cfe4b73bc18669e6a6e0ab9 Hostname: debian Storage: /var/lib/systemd/coredump/core.gcompris-qt.1000.72521b85e6234488be06dcaf63ac1b7c.919.1548953998000000.lz4 Message: Process 919 (gcompris-qt) of user 1000 dumped core. Stack trace of thread 919: #0 0x00007f341f02c0a6 _ZNK3QV45Value8isObjectEv (libQt5Qml.so.5) #1 0x00007f33e9f841b8 n/a (n/a) #2 0x00007f341f01dfd1 _ZN3QV44Moth3VME4execEPKNS_14FunctionObjectEPKNS_5ValueES7_i (libQt5Qml.so.5) #3 0x00007f341f0289bb _ZNK3QV414FunctionObject4callEPKNS_5ValueES3_i (libQt5Qml.so.5) #4 0x00007f33e9f800a0 n/a (n/a) #5 0x00007f341f01dfd1 _ZN3QV44Moth3VME4execEPKNS_14FunctionObjectEPKNS_5ValueES7_i (libQt5Qml.so.5) #6 0x00007f341f01fbf4 _ZNK3QV414FunctionObject4callEPKNS_5ValueES3_i (libQt5Qml.so.5) #7 0x00007f341f02c665 _ZNK3QV414FunctionObject4callEPKNS_5ValueES3_i (libQt5Qml.so.5) #8 0x00007f341f01fbb6 _ZN3QV44Moth3VME4execEPKNS_14FunctionObjectEPKNS_5ValueES7_i (libQt5Qml.so.5) #9 0x00007f341f0289bb _ZNK3QV414FunctionObject4callEPKNS_5ValueES3_i (libQt5Qml.so.5) #10 0x00007f341f01fa2c _ZN3QV44Moth3VME4execEPKNS_14FunctionObjectEPKNS_5ValueES7_i (libQt5Qml.so.5) #11 0x00007f341f02c665 _ZNK3QV414FunctionObject4callEPKNS_5ValueES3_i (libQt5Qml.so.5) #12 0x00007f341f01fbb6 _ZN3QV44Moth3VME4execEPKNS_14FunctionObjectEPKNS_5ValueES7_i (libQt5Qml.so.5) #13 0x00007f341f0289bb _ZNK3QV414FunctionObject4callEPKNS_5ValueES3_i (libQt5Qml.so.5) #14 0x00007f341f01fa2c _ZN3QV44Moth3VME4execEPKNS_14FunctionObjectEPKNS_5ValueES7_i (libQt5Qml.so.5) #15 0x00007f341f02c665 _ZNK3QV414FunctionObject4callEPKNS_5ValueES3_i (libQt5Qml.so.5) #16 0x00007f341f01fbb6 _ZN3QV44Moth3VME4execEPKNS_14FunctionObjectEPKNS_5ValueES7_i (libQt5Qml.so.5) #17 0x00007f341f0d72df _ZN3QV44Moth3VME4execEPNS_8FunctionEPKNS_5ValueES6_iPKNS_16ExecutionContextE (libQt5Qml.so.5) #18 0x00007f341f069867 _ZN25QQmlBoundSignalExpression8evaluateEPPv (libQt5Qml.so.5) #19 0x00007f341f06a9fb _Z24QQmlBoundSignal_callbackP20QQmlNotifierEndpointPPv (libQt5Qml.so.5) #20 0x00007f341f0b40f3 _ZN12QQmlNotifier10emitNotifyEP20QQmlNotifierEndpointPPv (libQt5Qml.so.5) #21 0x00007f341f04ceaa _ZN8QQmlData13signalEmittedEP24QAbstractDeclarativeDataP7QObjectiPPv (libQt5Qml.so.5) #22 0x00007f341de750ef _ZN11QMetaObject8activateEP7QObjectiiPPv (libQt5Core.so.5) #23 0x00007f341f141cba _ZN9QQmlTimer5eventEP6QEvent (libQt5Qml.so.5) #24 0x00007f341e7a74a1 _ZN19QApplicationPrivate13notify_helperEP7QObjectP6QEvent (libQt5Widgets.so.5) #25 0x00007f341e7aeae0 _ZN12QApplication6notifyEP7QObjectP6QEvent (libQt5Widgets.so.5) #26 0x00007f341de4c579 _ZN16QCoreApplication15notifyInternal2EP7QObjectP6QEvent (libQt5Core.so.5) #27 0x00007f341de4f56b _ZN16QCoreApplication9sendEventEP7QObjectP6QEvent (libQt5Core.so.5) #28 0x00007f341de9ec03 postEventSourceDispatch (libQt5Core.so.5) #29 0x00007f341c76fc3e g_main_dispatch (libglib-2.0.so.0) #30 0x00007f341c76fed8 g_main_context_iterate (libglib-2.0.so.0) #31 0x00007f341c76ff6c g_main_context_iteration (libglib-2.0.so.0) #32 0x00007f341de9e223 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5) #33 0x00007f3419b37e51 n/a (libQt5XcbQpa.so.5) #34 0x00007f341de4b24b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5) #35 0x00007f341de533c2 _ZN16QCoreApplication4execEv (libQt5Core.so.5) #36 0x0000560843b77955 main (gcompris-qt) #37 0x00007f341d8a9b17 __libc_start_main (libc.so.6) #38 0x0000560843b780ca _start (gcompris-qt) Stack trace of thread 920: #0 0x00007f341d974739 __GI___poll (libc.so.6) #1 0x00007f341a3bdcf7 n/a (libxcb.so.1) #2 0x00007f341a3bf90a xcb_wait_for_event (libxcb.so.1) #3 0x00007f3419aa6159 n/a (libQt5XcbQpa.so.5) #4 0x00007f341dca3d47 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5) #5 0x00007f341d6d9f2a start_thread (libpthread.so.0) #6 0x00007f341d97eedf __clone (libc.so.6) Stack trace of thread 922: #0 0x00007f341d6dfe6c futex_wait_cancelable (libpthread.so.0) #1 0x00007f340f40727b n/a (swrast_dri.so) #2 0x00007f340f4071d7 n/a (swrast_dri.so) #3 0x00007f341d6d9f2a start_thread (libpthread.so.0) #4 0x00007f341d97eedf __clone (libc.so.6) Stack trace of thread 938: #0 0x00007f341d6e019a futex_reltimed_wait_cancelable (libpthread.so.0) #1 0x00007f341dca43dc _ZN21QWaitConditionPrivate13wait_relativeEm (libQt5Core.so.5) #2 0x00007f341dc9c242 _ZN17QThreadPoolThread3runEv (libQt5Core.so.5) #3 0x00007f341dca3d47 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5) #4 0x00007f341d6d9f2a start_thread (libpthread.so.0) #5 0x00007f341d97eedf __clone (libc.so.6) Stack trace of thread 921: #0 0x00007f341d974739 __GI___poll (libc.so.6) #1 0x00007f341c76fe46 g_main_context_poll (libglib-2.0.so.0) #2 0x00007f341c76ff6c g_main_context_iteration (libglib-2.0.so.0) #3 0x00007f341de9e223 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5) #4 0x00007f341de4b24b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5) #5 0x00007f341dc9a176 _ZN7QThread4execEv (libQt5Core.so.5) #6 0x00007f341f0f6c75 _ZN17QQmlThreadPrivate3runEv (libQt5Qml.so.5) #7 0x00007f341dca3d47 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5) #8 0x00007f341d6d9f2a start_thread (libpthread.so.0) #9 0x00007f341d97eedf __clone (libc.so.6) Stack trace of thread 933: #0 0x00007f341d974739 __GI___poll (libc.so.6) #1 0x00007f341c76fe46 g_main_context_poll (libglib-2.0.so.0) #2 0x00007f341c76ff6c g_main_context_iteration (libglib-2.0.so.0) #3 0x00007f341de9e223 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5) #4 0x00007f341de4b24b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5) #5 0x00007f341dc9a176 _ZN7QThread4execEv (libQt5Core.so.5) #6 0x00007f341dca3d47 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5) #7 0x00007f341d6d9f2a start_thread (libpthread.so.0) #8 0x00007f341d97eedf __clone (libc.so.6) Stack trace of thread 926: #0 0x00007f341d6dfe6c futex_wait_cancelable (libpthread.so.0) #1 0x00007f340f40727b n/a (swrast_dri.so) #2 0x00007f340f4071d7 n/a (swrast_dri.so) #3 0x00007f341d6d9f2a start_thread (libpthread.so.0) #4 0x00007f341d97eedf __clone (libc.so.6) Stack trace of thread 937: #0 0x00007f341d974739 __GI___poll (libc.so.6) #1 0x00007f341c76fe46 g_main_context_poll (libglib-2.0.so.0) #2 0x00007f341c76ff6c g_main_context_iteration (libglib-2.0.so.0) #3 0x00007f341de9e223 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5) #4 0x00007f341de4b24b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5) #5 0x00007f341dc9a176 _ZN7QThread4execEv (libQt5Core.so.5) #6 0x00007f341dca3d47 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5) #7 0x00007f341d6d9f2a start_thread (libpthread.so.0) #8 0x00007f341d97eedf __clone (libc.so.6) Stack trace of thread 924: #0 0x00007f341d6dfe6c futex_wait_cancelable (libpthread.so.0) #1 0x00007f340f40727b n/a (swrast_dri.so) #2 0x00007f340f4071d7 n/a (swrast_dri.so) #3 0x00007f341d6d9f2a start_thread (libpthread.so.0) #4 0x00007f341d97eedf __clone (libc.so.6) Stack trace of thread 923: #0 0x00007f341d6dfe6c futex_wait_cancelable (libpthread.so.0) #1 0x00007f340f40727b n/a (swrast_dri.so) #2 0x00007f340f4071d7 n/a (swrast_dri.so) #3 0x00007f341d6d9f2a start_thread (libpthread.so.0) #4 0x00007f341d97eedf __clone (libc.so.6) Stack trace of thread 928: #0 0x00007f341d6dfe6c futex_wait_cancelable (libpthread.so.0) #1 0x00007f340f40727b n/a (swrast_dri.so) #2 0x00007f340f4071d7 n/a (swrast_dri.so) #3 0x00007f341d6d9f2a start_thread (libpthread.so.0) #4 0x00007f341d97eedf __clone (libc.so.6) Stack trace of thread 934: #0 0x00007f341d974739 __GI___poll (libc.so.6) #1 0x00007f341c76fe46 g_main_context_poll (libglib-2.0.so.0) #2 0x00007f341c76ff6c g_main_context_iteration (libglib-2.0.so.0) #3 0x00007f341de9e223 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5) #4 0x00007f341de4b24b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5) #5 0x00007f341dc9a176 _ZN7QThread4execEv (libQt5Core.so.5) #6 0x00007f34197a1545 n/a (libQt5DBus.so.5) #7 0x00007f341dca3d47 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5) #8 0x00007f341d6d9f2a start_thread (libpthread.so.0) #9 0x00007f341d97eedf __clone (libc.so.6) Stack trace of thread 935: #0 0x00007f341d974739 __GI___poll (libc.so.6) #1 0x00007f341c76fe46 g_main_context_poll (libglib-2.0.so.0) #2 0x00007f341c76ff6c g_main_context_iteration (libglib-2.0.so.0) #3 0x00007f341de9e223 _ZN20QEventDispatcherGlib13processEventsE6QFlagsIN10QEventLoop17ProcessEventsFlagEE (libQt5Core.so.5) #4 0x00007f341de4b24b _ZN10QEventLoop4execE6QFlagsINS_17ProcessEventsFlagEE (libQt5Core.so.5) #5 0x00007f341dc9a176 _ZN7QThread4execEv (libQt5Core.so.5) #6 0x00007f341f12b7a5 _ZN24QQuickWorkerScriptEngine3runEv (libQt5Qml.so.5) #7 0x00007f341dca3d47 _ZN14QThreadPrivate5startEPv (libQt5Core.so.5) #8 0x00007f341d6d9f2a start_thread (libpthread.so.0) #9 0x00007f341d97eedf __clone (libc.so.6) Stack trace of thread 929: #0 0x00007f341d6dfe6c futex_wait_cancelable (libpthread.so.0) #1 0x00007f340f40727b n/a (swrast_dri.so) #2 0x00007f340f4071d7 n/a (swrast_dri.so) #3 0x00007f341d6d9f2a start_thread (libpthread.so.0) #4 0x00007f341d97eedf __clone (libc.so.6) Stack trace of thread 925: #0 0x00007f341d6dfe6c futex_wait_cancelable (libpthread.so.0) #1 0x00007f340f40727b n/a (swrast_dri.so) #2 0x00007f340f4071d7 n/a (swrast_dri.so) #3 0x00007f341d6d9f2a start_thread (libpthread.so.0) #4 0x00007f341d97eedf __clone (libc.so.6) Stack trace of thread 927: #0 0x00007f341d6dfe6c futex_wait_cancelable (libpthread.so.0) #1 0x00007f340f40727b n/a (swrast_dri.so) #2 0x00007f340f4071d7 n/a (swrast_dri.so) #3 0x00007f341d6d9f2a start_thread (libpthread.so.0) #4 0x00007f341d97eedf __clone (libc.so.6) GNU gdb (Debian 8.1-4+b1) 8.1 Copyright (C) 2018 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html> This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. Type "show copying" and "show warranty" for details. This GDB was configured as "x86_64-linux-gnu". Type "show configuration" for configuration details. For bug reporting instructions, please see: <http://www.gnu.org/software/gdb/bugs/>. Find the GDB manual and other documentation resources online at: <http://www.gnu.org/software/gdb/documentation/>. For help, type "help". Type "apropos word" to search for commands related to "word"... Reading symbols from /usr/games/gcompris-qt...Reading symbols from /usr/lib/debug/.build-id/ac/5d57a47997ffd2b02640efee35439447d5c905.debug...done. done. [New LWP 919] [New LWP 920] [New LWP 922] [New LWP 938] [New LWP 921] [New LWP 933] [New LWP 926] [New LWP 937] [New LWP 924] [New LWP 923] [New LWP 928] [New LWP 934] [New LWP 935] [New LWP 929] [New LWP 925] [New LWP 927] [Thread debugging using libthread_db enabled] Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1". Core was generated by `gcompris-qt'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007f341f02c0a6 in QV4::Value::isObject (this=0x7f3415dca9c8) at ../../include/QtQml/5.11.1/QtQml/private/../../../../../src/qml/memory/qv4heap_p.h:101 101 ../../include/QtQml/5.11.1/QtQml/private/../../../../../src/qml/memory/qv4heap_p.h: Datei oder Verzeichnis nicht gefunden. [Current thread is 1 (Thread 0x7f3419d81380 (LWP 919))] (gdb) bt #0 0x00007f341f02c0a6 in QV4::Value::isObject (this=0x7f3415dca9c8) at ../../include/QtQml/5.11.1/QtQml/private/../../../../../src/qml/memory/qv4heap_p.h:101 #1 QV4::Value::objectValue (this=0x7f3415dca9c8) at jsruntime/qv4value_p.h:368 #2 QV4::Value::as<QV4::Object> (this=0x7f3415dca9c8) at jsruntime/qv4managed_p.h:254 #3 QV4::Scoped<QV4::Object>::Scoped (v=..., scope=<synthetic pointer>..., this=<synthetic pointer>) at jsruntime/qv4scopedvalue_p.h:223 #4 QV4::Runtime::method_loadProperty (engine=0x5608459f1fd0, object=..., nameIndex=<optimized out>) at jsruntime/qv4runtime.cpp:726 #5 0x00007f33e9f841b8 in ?? () #6 0x00007f3415dca8f0 in ?? () #7 0x00007f3415dca908 in ?? () #8 0x00005608459f1fd0 in ?? () #9 0x0000000000000000 in ?? () ############# 20180901T000000Z found 0.91-1 20181001T000000Z found 0.91-1 Just following from 20181101T000000Z on top of 20181001T000000Z makes the crash go away: libqt5core5a libqt5core5a-dbgsym libqt5dbus5 libqt5gui5 libqt5multimedia5 libqt5multimedia5-plugins libqt5multimediagsttools5 libqt5multimediaquick5 libqt5multimediawidgets5 libqt5network5 libqt5opengl5 libqt5qml5 libqt5qml5-dbgsym libqt5quick5 libqt5quickparticles5 libqt5sensors5 libqt5svg5 libqt5widgets5 qml-module-qtgraphicaleffects qml-module-qtmultimedia qml-module-qtquick-controls qml-module-qtquick-layouts qml-module-qtquick-particles2 qml-module-qtquick-window2 qml-module-qtquick2 qt5-gtk-platformtheme qttranslations5-l10n
