Bug 507361

Operating System: KDE neon Unstable Edition
KDE Plasma Version: 6.4.80
KDE Frameworks Version: 6.17.0
Qt Version: 6.9.1
Graphics Platform: Wayland


Thread 8 (Thread 0x74d5953fe6c0 (LWP 24518)):
#0  0x000074d5b4d1b4cd in __GI___poll (fds=0x74d5840044c0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x000074d5b537368e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x000074d5b5314f87 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x000074d5943b5e93 in ?? () from /usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstvideo4linux2.so
#4  0x000074d5b5342d92 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x000074d5b4c9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#6  0x000074d5b4d29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 7 (Thread 0x74d595bff6c0 (LWP 24517)):
#0  0x000074d5b4d1b4cd in __GI___poll (fds=0x5b7fe92634e0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x000074d5b537368e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x000074d5b5313a63 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x000074d5b566124f in QEventDispatcherGlib::processEvents (this=0x74d580000b70, flags=...) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#4  0x000074d5b58c0b6b in QEventLoop::exec (this=0x74d595bfe810, flags=...) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/global/qflags.h:77
#5  0x000074d5b57ce6b7 in QThread::exec (this=<optimized out>) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/global/qflags.h:77
#6  0x000074d5b579482c in operator() (__closure=<optimized out>) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/thread/qthread_unix.cpp:434
#7  (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/thread/qthread_unix.cpp:366
#8  QThreadPrivate::start (arg=0x5b7fe91549d0) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/thread/qthread_unix.cpp:394
#9  0x000074d5b4c9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#10 0x000074d5b4d29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 6 (Thread 0x74d5aedff6c0 (LWP 24507)):
#0  0x000074d5b4d1b4cd in __GI___poll (fds=0x5b7fe8d00770, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x000074d5b537368e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x000074d5b5313a63 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x000074d5b566124f in QEventDispatcherGlib::processEvents (this=0x74d5a8000b70, flags=...) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#4  0x000074d5b58c0b6b in QEventLoop::exec (this=0x74d5aedfe7c0, flags=...) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/global/qflags.h:77
#5  0x000074d5b57ce6b7 in QThread::exec (this=this@entry=0x74d5b47bf680 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/global/qflags.h:77
#6  0x000074d5b47a191d in QDBusConnectionManager::run (this=0x74d5b47bf680 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/dbus/qdbusconnectionmanager.cpp:144
#7  0x000074d5b579482c in operator() (__closure=<optimized out>) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/thread/qthread_unix.cpp:434
#8  (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/thread/qthread_unix.cpp:366
#9  QThreadPrivate::start (arg=0x74d5b47bf680 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/thread/qthread_unix.cpp:394
#10 0x000074d5b4c9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#11 0x000074d5b4d29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 5 (Thread 0x74d5aca456c0 (LWP 24510)):
#0  0x000074d5b4c98d71 in __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5b7fe8e96f08) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x5b7fe8e96f08) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5b7fe8e96f08, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x000074d5b4c9b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5b7fe8e96eb0, cond=0x5b7fe8e96ee0) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x5b7fe8e96ee0, mutex=0x5b7fe8e96eb0) at ./nptl/pthread_cond_wait.c:627
#5  0x000074d59d95040d in ?? () from /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#6  0x000074d59d92ed0b in ?? () from /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#7  0x000074d59d95033c in ?? () from /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#8  0x000074d5b4c9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x000074d5b4d29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 4 (Thread 0x74d5ae1846c0 (LWP 24508)):
#0  0x000074d5b4c98d71 in __futex_abstimed_wait_common64 (private=29909, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5b7fe8d73e90) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=29909, abstime=0x0, clockid=0, expected=0, futex_word=0x5b7fe8d73e90) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5b7fe8d73e90, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x000074d5b4c9b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5b7fe8d73e40, cond=0x5b7fe8d73e68) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x5b7fe8d73e68, mutex=0x5b7fe8d73e40) at ./nptl/pthread_cond_wait.c:627
#5  0x000074d5b579b68c in QWaitConditionPrivate::wait (deadline=..., this=0x5b7fe8d73e40) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/thread/qwaitcondition_unix.cpp:67
#6  QWaitCondition::wait (this=this@entry=0x5b7fe8d61940, mutex=mutex@entry=0x5b7fe8d61938, deadline=...) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/thread/qwaitcondition_unix.cpp:145
#7  0x000074d5b27af076 in QtWaylandClient::EventThread::waitForReading (this=0x5b7fe8d61900) at /usr/src/qt6-wayland-6.9.1-0zneon+24.04+noble+unstable+build33/src/client/qwaylanddisplay.cpp:217
#8  QtWaylandClient::EventThread::run (this=0x5b7fe8d61900) at /usr/src/qt6-wayland-6.9.1-0zneon+24.04+noble+unstable+build33/src/client/qwaylanddisplay.cpp:178
#9  0x000074d5b579482c in operator() (__closure=<optimized out>) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/thread/qthread_unix.cpp:434
#10 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/thread/qthread_unix.cpp:366
#11 QThreadPrivate::start (arg=0x5b7fe8d61900) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/thread/qthread_unix.cpp:394
#12 0x000074d5b4c9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#13 0x000074d5b4d29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 3 (Thread 0x74d5ad9836c0 (LWP 24509)):
#0  0x000074d5b4d1b4cd in __GI___poll (fds=fds@entry=0x74d5ad982800, nfds=nfds@entry=2, timeout=timeout@entry=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x000074d5b27af0f6 in poll (__timeout=-1, __nfds=2, __fds=0x74d5ad982800) at /usr/include/x86_64-linux-gnu/bits/poll2.h:39
#2  QtWaylandClient::EventThread::run (this=0x5b7fe8d81030) at /usr/src/qt6-wayland-6.9.1-0zneon+24.04+noble+unstable+build33/src/client/qwaylanddisplay.cpp:183
#3  0x000074d5b579482c in operator() (__closure=<optimized out>) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/thread/qthread_unix.cpp:434
#4  (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/thread/qthread_unix.cpp:366
#5  QThreadPrivate::start (arg=0x5b7fe8d81030) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/thread/qthread_unix.cpp:394
#6  0x000074d5b4c9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#7  0x000074d5b4d29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 2 (Thread 0x74d58ffff6c0 (LWP 24511)):
#0  0x000074d5b4c98d71 in __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5b7fe8e82e08) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x5b7fe8e82e08) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5b7fe8e82e08, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x000074d5b4c9b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5b7fe8e82db0, cond=0x5b7fe8e82de0) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x5b7fe8e82de0, mutex=0x5b7fe8e82db0) at ./nptl/pthread_cond_wait.c:627
#5  0x000074d59d95040d in ?? () from /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#6  0x000074d59d92ed0b in ?? () from /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#7  0x000074d59d95033c in ?? () from /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#8  0x000074d5b4c9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x000074d5b4d29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 1 (Thread 0x74d5af262d40 (LWP 24506)):
#0  __pthread_kill_implementation (no_tid=0, signo=6, threadid=<optimized out>) at ./nptl/pthread_kill.c:44
#1  __pthread_kill_internal (signo=6, threadid=<optimized out>) at ./nptl/pthread_kill.c:78
#2  __GI___pthread_kill (threadid=<optimized out>, signo=signo@entry=6) at ./nptl/pthread_kill.c:89
#3  0x000074d5b4c4527e in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26
#4  0x000074d5b4c288ff in __GI_abort () at ./stdlib/abort.c:79
#5  0x000074d5b592a09e in qAbort () at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/global/qassert.cpp:46
#6  qt_message_fatal<QString&> (message=..., context=...) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/global/qlogging.cpp:2149
#7  qt_message(QtMsgType, const QMessageLogContext &, const char *, typedef __va_list_tag __va_list_tag *) (msgType=msgType@entry=QtFatalMsg, context=..., msg=msg@entry=0x74d5b564a7e8 "ASSERT: \"%s\" in file %s, line %d", ap=ap@entry=0x7ffd89c88818) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/global/qlogging.cpp:381
#8  0x000074d5b592b779 in QMessageLogger::fatal (this=<optimized out>, msg=0x74d5b564a7e8 "ASSERT: \"%s\" in file %s, line %d") at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/global/qlogging.cpp:883
#9  0x000074d5b5915f53 in qt_assert (assertion=assertion@entry=0x5b7fe054dbcc "!isEmpty()", file=file@entry=0x5b7fe054d0e0 "/usr/include/x86_64-linux-gnu/qt6/QtCore/qlist.h", line=line@entry=678) at /usr/src/qt6-base-6.9.1-0zneon+24.04+noble+unstable+build120/src/corelib/global/qassert.cpp:105
#10 0x00005b7fe0539bc7 in QList<Device*>::constFirst (this=<optimized out>) at /usr/include/x86_64-linux-gnu/qt6/QtCore/qlist.h:678
#11 QList<QObject*>::constFirst (this=0x7ffd89c88b50) at /usr/include/x86_64-linux-gnu/qt6/QtCore/qlist.h:678
#12 WebcamControl::WebcamControl (this=<optimized out>, this=<optimized out>) at /usr/src/kamoso-25.04.2+p24.04+vunstable+git20250617.0939-0/src/video/webcamcontrol.cpp:221
#13 0x00005b7fe053b805 in main (argc=<optimized out>, argv=<optimized out>) at /usr/src/kamoso-25.04.2+p24.04+vunstable+git20250617.0939-0/src/main.cpp:45