This crash happened randomly (not reproduceable for me) when I clicked on the panel icon to bring up the application dashboard. Kubuntu 21.10 Plasma 5.23.5 (Wayland session) Frameworks 5.90.0 Qt 5.15.2 Backtrace: #0 __pthread_kill_implementation (no_tid=0, signo=6, threadid=140279635527232) at pthread_kill.c:44 #1 __pthread_kill_internal (signo=6, threadid=140279635527232) at pthread_kill.c:80 #2 __GI___pthread_kill (threadid=140279635527232, signo=signo@entry=6) at pthread_kill.c:91 #3 0x00007f956a8fa476 in __GI_raise (sig=6) at ../sysdeps/posix/raise.c:26 #4 0x00007f956ce0157c in KCrash::defaultCrashHandler(int) () from /lib/x86_64-linux-gnu/libKF5Crash.so.5 #5 <signal handler called> #6 g_main_context_check (context=0x7f9560000c20, max_priority=2147483647, fds=<optimized out>, n_fds=1708669304) at ../../../glib/gmain.c:3945 #7 0x00007f9569421e4d in g_main_context_iterate.constprop.0 ( context=context@entry=0x7f9560000c20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4128 #8 0x00007f95693cc003 in g_main_context_iteration (context=0x7f9560000c20, may_block=1) at ../../../glib/gmain.c:4196 #9 0x00007f956b0095be in QEventDispatcherGlib::processEvents ( this=0x7f9560000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425 #10 0x00007f956afaea9b in QEventLoop::exec (this=this@entry=0x7f9565d83b50, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:69 #11 0x00007f956adc28c2 in QThread::exec ( this=this@entry=0x7f956b9c9d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121 #12 0x00007f956b94fefb in QDBusConnectionManager::run (this= 0x7f956b9c9d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at ./src/dbus/qdbusconnection.cpp:179 #13 0x00007f956adc3a71 in QThreadPrivate::start ( arg=0x7f956b9c9d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:329 #14 0x00007f956a94c927 in start_thread (arg=<optimized out>) at pthread_create.c:435 #15 0x00007f956a9dc9e4 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100
Hmm, no KDE code implicated.
Would it help to make the full coredump avaiable? (37.4M in size)
Probably not, unfortunately.
Update: This kind of crash has continued to appear from time to time recently, triggered by the same action (clicking on dashboard icon) and with similar backtraces. I'm not that experienced in reading backtraces, but could it indicate that there is some problem/bug with glib (not KDE related)?
*** Bug 456605 has been marked as a duplicate of this bug. ***
A possibly relevant merge request was started @ https://invent.kde.org/qt/qt/qtwayland/-/merge_requests/56
>#0 __pthread_kill_implementation (no_tid=0, signo=6, threadid=140279635527232) Signal 6 is an abort. This is externally generated.
Fortunately I haven't seen this bug for a really long time, so it seems that something happened that fixed it :)