Kamoso crashes on startup

[Alan Dacey Sr.]

Package: kamoso
Version: 3.2.4-1

Kubuntu 18.04 bionic
x86_64 Linux 4.15.0-46-generic
KDE 5.44.0 / Plasma 5.12.7

Kamoso always crashes on startup.

Output when starting from the command line:

me@here:~$ Playing device changed "/dev/video0"
Cannot initialize model with data QJsonObject() . missing: QJsonValue(string, "urls")
new gamma 109
new gamma 110
file:///usr/lib/x86_64-linux-gnu/qt5/qml/QtQuick/Controls/Slider.qml:204:5: QML RangeModel: Binding loop detected for property "value"
New saturation 100
New contrast 100

[Cyberbeat-p (cyberbeat-p)]

Application: kamoso (21.04.0)

Qt Version: 5.15.2
Frameworks Version: 5.81.0
Operating System: Linux 5.12.0-2-default x86_64
Windowing System: X11
Drkonqi Version: 5.21.5
Distribution: "openSUSE Tumbleweed"

-- Information about the crash:
- What I was doing when the application crashed:

My default device /dev/video0 is in use to create a virtual device /dev/video10 (see https://github.com/allo-/virtual_webcam_background).

Kamoso crashes at startup, while kamerka works with this new device.

The crash can be reproduced every time.

-- Backtrace:
Application: Kamoso (kamoso), signal: Segmentation fault
Content of s_kcrashErrorMessage: [Current thread is 1 (Thread 0x7f71f44f9f00 (LWP 9479))]
[KCrash Handler]
#6 g_type_check_instance_cast (type_instance=0x56431de52280, iface_type=0x50 [GObject]) at ../gobject/gtype.c:4114
#7 0x00007f71dc1a467b in () at /usr/lib64/gstreamer-1.0/libgstcamerabin.so
#11 0x00007f71f890eb3f in <emit signal notify:zoom on instance 0x56431de1c080 [GstWrapperCameraBinSrc]> (instance=instance@entry=0x56431de1c080, signal_id=<optimized out>, detail=<optimized out>) at ../gobject/gsignal.c:3553
    #8 0x00007f71f88f569f in g_closure_invoke (closure=0x56431da0e670, return_value=return_value@entry=0x0, n_param_values=2, param_values=param_values@entry=0x7fff0ecec790, invocation_hint=invocation_hint@entry=0x7fff0ecec710) at ../gobject/gclosure.c:810
    #9 0x00007f71f8907fab in signal_emit_unlocked_R (node=node@entry=0x56431d28c9c0, detail=detail@entry=2457, instance=instance@entry=0x56431de1c080, emission_return=emission_return@entry=0x0, instance_and_params=instance_and_params@entry=0x7fff0ecec790) at ../gobject/gsignal.c:3741
    #10 0x00007f71f890e9d9 in g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7fff0ecec930) at ../gobject/gsignal.c:3497
#12 0x00007f71f88fa094 in g_object_dispatch_properties_changed (object=0x56431de1c080 [GstWrapperCameraBinSrc], n_pspecs=<optimized out>, pspecs=<optimized out>) at ../gobject/gobject.c:1206
#13 0x00007f71f8ab5da4 in gst_object_dispatch_properties_changed (object=0x56431de1c080 [GstWrapperCameraBinSrc], n_pspecs=1, pspecs=0x7fff0ececaa0) at ../gst/gstobject.c:455
#14 0x00007f71f88f98ce in g_object_notify_queue_thaw (object=0x56431de1c080 [GstWrapperCameraBinSrc], nqueue=<optimized out>) at ../gobject/gobject.c:341
#15 0x00007f71f88fd31f in g_object_set_valist (object=0x56431de1c080 [GstWrapperCameraBinSrc], first_property_name=<optimized out>, var_args=0x7fff0ececc20) at ../gobject/gobject.c:2471
#16 0x00007f71f88fdcfc in g_object_set (_object=0x56431de1c080, first_property_name=0x7f71dc1ab026 "zoom") at ../gobject/gobject.c:2635
#17 0x00007f71dc1a8f9e in () at /usr/lib64/gstreamer-1.0/libgstcamerabin.so
#18 0x00007f71f8ae41e5 in gst_element_change_state (element=element@entry=0x56431de52610 [GstCameraBin|camerabin], transition=transition@entry=GST_STATE_CHANGE_NULL_TO_READY) at ../gst/gstelement.c:3046
#19 0x00007f71f8ae48ed in gst_element_set_state_func (element=0x56431de52610 [GstCameraBin|camerabin], state=GST_STATE_READY) at ../gst/gstelement.c:3000
#20 0x000056431b777342 in WebcamControl::playD...

[Tony (jodr666)]

Created attachment 142351
New crash information added by DrKonqi

kamoso (21.11.70) using Qt 5.15.2

Ok, that's bizarre, i literally saved the file from drkonqi, no wonder the drives from the machine i originally got it died soon after.

-- Backtrace (Reduced):
#4 QString::QString(QString const&) (other=..., this=0x7ffcde6df1e0) at /usr/include/qt5/QtCore/qstring.h:1093
#5 Device::objectId() const (this=0x0) at /usr/src/debug/kamoso-21.11.70git.20211005T003328~2a2174e-ku.4.1.x86_64/src/device.cpp:50
#6 WebcamControl::playDevice(Device*) (this=0x7ffcde6e1e90, device=0x0) at /usr/src/debug/kamoso-21.11.70git.20211005T003328~2a2174e-ku.4.1.x86_64/src/video/webcamcontrol.cpp:275
#7 0x0000556862128660 in Kamoso::setRecording(bool) (recording=<optimized out>, this=0x556862683ab0) at /usr/src/debug/kamoso-21.11.70git.20211005T003328~2a2174e-ku.4.1.x86_64/src/kamoso.cpp:117
#8 Kamoso::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=0x556862683ab0, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /usr/src/debug/kamoso-21.11.70git.20211005T003328~2a2174e-ku.4.1.x86_64/build/src/kamoso_autogen/EWIEGA46WW/moc_kamoso.cpp:201

[Tony (jodr666)]

(In reply to Tony from comment #1)
> Created attachment 142351 [details]
> New crash information added by DrKonqi
>
> kamoso (21.11.70) using Qt 5.15.2
>
> Ok, that's bizarre, i literally saved the file from drkonqi, no wonder the
> drives from the machine i originally got it died soon after.
>
> -- Backtrace (Reduced):
> #4 QString::QString(QString const&) (other=..., this=0x7ffcde6df1e0) at
> /usr/include/qt5/QtCore/qstring.h:1093
> #5 Device::objectId() const (this=0x0) at
> /usr/src/debug/kamoso-21.11.70git.20211005T003328~2a2174e-ku.4.1.x86_64/src/
> device.cpp:50
> #6 WebcamControl::playDevice(Device*) (this=0x7ffcde6e1e90, device=0x0) at
> /usr/src/debug/kamoso-21.11.70git.20211005T003328~2a2174e-ku.4.1.x86_64/src/
> video/webcamcontrol.cpp:275
> #7 0x0000556862128660 in Kamoso::setRecording(bool) (recording=<optimized
> out>, this=0x556862683ab0) at
> /usr/src/debug/kamoso-21.11.70git.20211005T003328~2a2174e-ku.4.1.x86_64/src/
> kamoso.cpp:117
> #8 Kamoso::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)
> (_o=0x556862683ab0, _c=<optimized out>, _id=<optimized out>, _a=<optimized
> out>) at
> /usr/src/debug/kamoso-21.11.70git.20211005T003328~2a2174e-ku.4.1.x86_64/
> build/src/kamoso_autogen/EWIEGA46WW/moc_kamoso.cpp:201

Please discard this, mistakes were made.

[Scarlett Gately Moore (scarlettmoore)]

https://bugs.kde.org/show_bug.cgi?id=436922