STEPS TO REPRODUCE 1. `plasma-interactiveconsole --kwin` 2. enter `callDBus("receiver", "/path", "some.interface", "method", {"window": workspace.activeWindow});` 3. press "Execute" 4. kwin crashes SOFTWARE/OS VERSIONS Operating System: Arch Linux KDE Plasma Version: 6.2.1 KDE Frameworks Version: 6.7.0 Qt Version: 6.8.0 Kernel Version: 6.11.3-arch1-1 (64-bit) Graphics Platform: Wayland Processors: 12 × AMD Ryzen 5 5600H with Radeon Graphics Memory: 13.5 GiB of RAM Graphics Processor: AMD Radeon Graphics
Note: I know it is an invalid argument to `callDBus`.
#0 __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0) at pthread_kill.c:44 #1 0x0000760ab28a5463 in __pthread_kill_internal (threadid=<optimized out>, signo=6) at pthread_kill.c:78 #2 0x0000760ab284c120 in __GI_raise (sig=6) at ../sysdeps/posix/raise.c:26 #3 0x0000760ab7c5505c in KCrash::defaultCrashHandler (sig=6) at /home/david/projects/kde6/src/frameworks/kcrash/src/kcrash.cpp:596 #4 0x0000760ab284c1d0 in <signal handler called> () at /usr/lib/libc.so.6 #5 __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=6, no_tid=no_tid@entry=0) at pthread_kill.c:44 #6 0x0000760ab28a5463 in __pthread_kill_internal (threadid=<optimized out>, signo=6) at pthread_kill.c:78 #7 0x0000760ab284c120 in __GI_raise (sig=sig@entry=6) at ../sysdeps/posix/raise.c:26 #8 0x0000760ab28334c3 in __GI_abort () at abort.c:79 #9 0x0000760ab186d044 in _dbus_abort () at /usr/src/debug/dbus/dbus-1.14.10/dbus/dbus-sysdeps.c:101 #10 0x0000760ab18948eb in _dbus_warn_check_failed (format=0x760ab18a0080 "arguments to %s() were incorrect, assertion \"%s\" failed in file %s line %d.\nThis is normally a bug in some application using the D-Bus library.\n") at /usr/src/debug/dbus/dbus-1.14.10/dbus/dbus-internals.c:289 #11 0x0000760ab1883ca2 in dbus_message_new_method_call (destination=0x5cfd84a1b040 "receiver", path=0x5cfd84a9d270 "/path", iface=0x5cfd84a435e0 "some.interface", method=0x5cfd8448f750 "method") at /usr/src/debug/dbus/dbus-1.14.10/dbus/dbus-message.c:1375 #12 0x0000760ab35a0c65 in q_dbus_message_new_method_call (bus_name=0x5cfd84a1b040 "receiver", path=0x5cfd84a9d270 "/path", interface=0x5cfd84a435e0 "some.interface", method=0x760ab28a53f4 <__pthread_kill_implementation+276> "\211\303\367\333=") at /home/david/projects/kde6/src/qtbase/src/dbus/qdbus_symbols_p.h:353 #13 QDBusMessagePrivate::toDBusMessage (message=<optimized out>, capabilities=..., error=0x7fff3ff1f790) at /home/david/projects/kde6/src/qtbase/src/dbus/qdbusmessage.cpp:122 #14 0x0000760ab3588f2d in QDBusConnectionPrivate::sendWithReplyAsync (this=0x760a9c0016c0, message=..., receiver=<optimized out>, returnMethod=0x0, errorMethod=0x0, timeout=-1)
I can narrow it down to: this crashes: `callDBus("receiver", "/path", "some.interface", "method");` this doesn't: `callDBus("org.receiver", "/path", "some.interface", "method");`
A possibly relevant merge request was started @ https://invent.kde.org/plasma/kwin/-/merge_requests/6640
Fixed in upstream Qt dev and 6.8: https://bugreports.qt.io/browse/QTBUG-130304