514512 2026-01-12 20:38:06 +0000 KSystemClipboard crashes in WaylandClipboard::~WaylandClipboard 2026-01-13 22:45:53 +0000 1 1 3 Frameworks and Libraries frameworks-kguiaddons general 6.22.0 Arch Linux Linux RESOLVED FIXED NOR crash --- 1 peter kdelibs-bugs-null kde m.kurz nicolas.fella https://invent.kde.org/frameworks/kguiaddons/-/commit/3ce4f13705b6d5c0381d7cf156580327597fd65b 6.22.1 0 oldest_to_newest 2484165 0 peter 2026-01-12 20:38:06 +0000 * wlroots master with the new wayland protocols ext-image-copy-capture-v1 and ext-image-capture-sourcev1 * Copy to clipboard with flameshot 13.3.0 causes segfault Core was generated by `/usr/bin/flameshot'. Program terminated with signal SIGSEGV, Segmentation fault. #0 0x00007245f5c8668c in QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >::get (this=<optimized out>, this=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/tools/qscopedpointer.h:112 112 return d; [Current thread is 1 (Thread 0x7245f54144c0 (LWP 6681))] (gdb) bt #0 0x00007245f5c8668c in QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> >::get (this=<optimized out>, this=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/tools/qscopedpointer.h:112 #1 qGetPtrHelper<QScopedPointer<QObjectData, QScopedPointerDeleter<QObjectData> > const> (ptr=..., ptr=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/global/qtclasshelpermacros.h:137 #2 QThread::d_func (this=0x0) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread.h:122 #3 QThread::isRunning (this=0x0) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread.cpp:515 #4 0x00007245f74df5a8 in WaylandClipboard::~WaylandClipboard (this=<optimized out>, this=<optimized out>) at /usr/src/debug/kguiaddons/kguiaddons-6.22.0/src/systemclipboard/waylandclipboard.cpp:622 #5 0x00007245f74e1964 in WaylandClipboard::~WaylandClipboard (this=<optimized out>, this=<optimized out>) at /usr/src/debug/kguiaddons/kguiaddons-6.22.0/src/systemclipboard/waylandclipboard.cpp:620 #6 WaylandClipboard::create (parent=<optimized out>) at /usr/src/debug/kguiaddons/kguiaddons-6.22.0/src/systemclipboard/waylandclipboard.cpp:634 #7 KSystemClipboard::instance () at /usr/src/debug/kguiaddons/kguiaddons-6.22.0/src/systemclipboard/ksystemclipboard.cpp:30 #8 KSystemClipboard::instance () at /usr/src/debug/kguiaddons/kguiaddons-6.22.0/src/systemclipboard/ksystemclipboard.cpp:18 #9 0x000061998c12a5de in saveToClipboardMime (capture=..., imageType=...) at /usr/src/debug/flameshot/flameshot-13.3.0/src/utils/screenshotsaver.cpp:176 #10 0x000061998c12bdc9 in saveToClipboard (capture=...) at /usr/src/debug/flameshot/flameshot-13.3.0/src/utils/screenshotsaver.cpp:213 #11 0x000061998c0d97bd in FlameshotDaemon::attachScreenshotToClipboard (this=0x6199ab4a77b0, pixmap=...) at /usr/src/debug/flameshot/flameshot-13.3.0/src/core/flameshotdaemon.cpp:310 #12 FlameshotDaemon::attachScreenshotToClipboard (this=0x6199ab4a77b0, screenshot=...) at /usr/src/debug/flameshot/flameshot-13.3.0/src/core/flameshotdaemon.cpp:334 #13 FlameshotDBusAdapter::attachScreenshotToClipboard (this=<optimized out>, data=...) at /usr/src/debug/flameshot/flameshot-13.3.0/src/core/flameshotdbusadapter.cpp:15 #14 FlameshotDBusAdapter::qt_static_metacall (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at /usr/src/debug/flameshot/build/src/flameshot_autogen/TAC5DWH4SE/moc_flameshotdbusadapter.cpp:93 #15 0x000061998c0df002 in FlameshotDBusAdapter::qt_metacall (this=0x6199ab318cb0, _c=QMetaObject::InvokeMetaMethod, _id=0, _a=0x7ffc42c38018) at /usr/src/debug/flameshot/build/src/flameshot_autogen/TAC5DWH4SE/moc_flameshotdbusadapter.cpp:121 #16 0x00007245f7430b71 in QDBusConnectionPrivate::deliverCall (this=this@entry=0x7245ec0016e0, object=object@entry=0x6199ab318cb0, msg=..., metaTypes=..., slotIdx=4) at /usr/src/debug/qt6-base/qtbase/src/dbus/qdbusintegrator.cpp:1008 #17 0x00007245f7431a63 in QDBusConnectionPrivate::activateCall (this=this@entry=0x7245ec0016e0, object=0x6199ab318cb0, flags=..., flags@entry=..., msg=...) at /usr/src/debug/qt6-base/qtbase/src/dbus/qdbusintegrator.cpp:910 #18 0x00007245f7434613 in QDBusConnectionPrivate::activateObject (this=0x7245ec0016e0, node=..., msg=..., pathStartPos=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/dbus/qdbusintegrator.cpp:1476 #19 0x00007245f7435f8a in QDBusActivateObjectEvent::placeMetaCall (this=0x7245ec0045c0) at /usr/src/debug/qt6-base/qtbase/src/dbus/qdbusintegrator.cpp:1605 #20 0x00007245f5bc4994 in QObject::event (this=<optimized out>, e=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:1413 #21 0x00007245f6d021c0 in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x61998c1c90e0 <Flameshot::instance()::c>, e=0x7245ec0045c0) at /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qapplication.cpp:3305 --Type <RET> for more, q to quit, c to continue without paging-- #22 0x00007245f5b6a958 in QCoreApplication::notifyInternal2 (receiver=0x61998c1c90e0 <Flameshot::instance()::c>, event=event@entry=0x7245ec0045c0) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1109 #23 0x00007245f5b6ad30 in QCoreApplication::sendEvent (receiver=<optimized out>, event=0x7245ec0045c0) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1549 #24 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x6199ab03ae10) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1904 #25 0x00007245f5e4ae18 in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1757 #26 postEventSourceDispatch (s=0x6199ab054080) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:246 #27 0x00007245f5106f8d in g_main_dispatch (context=0x7245ec000f60) at ../glib/glib/gmain.c:3565 #28 0x00007245f5108657 in g_main_context_dispatch_unlocked (context=0x7245ec000f60) at ../glib/glib/gmain.c:4425 #29 g_main_context_iterate_unlocked (context=context@entry=0x7245ec000f60, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4490 #30 0x00007245f5108865 in g_main_context_iteration (context=0x7245ec000f60, may_block=1) at ../glib/glib/gmain.c:4556 #31 0x00007245f5e48152 in QEventDispatcherGlib::processEvents (this=0x6199ab040910, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:399 #32 0x00007245f5b75786 in QEventLoop::processEvents (this=0x7ffc42c38910, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:104 #33 QEventLoop::exec (this=0x7ffc42c38910, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:186 #34 0x00007245f5b6f3f1 in QCoreApplication::exec () at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1452 #35 0x00007245f6cfd32a in QApplication::exec () at /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qapplication.cpp:2575 #36 0x000061998c0d05bb in main (argc=<optimized out>, argv=0x7ffc42c3a418) at /usr/src/debug/flameshot/flameshot-13.3.0/src/main.cpp:255 2484372 1 nicolas.fella 2026-01-13 12:53:02 +0000 I don't see how this would be related to wlroots 2484373 2 peter 2026-01-13 12:56:20 +0000 (In reply to Nicolas Fella from comment #1) > I don't see how this would be related to wlroots Maybe not but this happens with flameshot on wlroots (which is different for screen capture and clipboard stuff). 2484398 3 nicolas.fella 2026-01-13 13:50:51 +0000 See also https://crash-reports.kde.org/organizations/kde/issues/346900 and https://crash-reports.kde.org/organizations/kde/issues/347310 2484402 4 bug-janitor 2026-01-13 13:56:00 +0000 A possibly relevant merge request was started @ https://invent.kde.org/frameworks/kguiaddons/-/merge_requests/197 2484403 5 kde 2026-01-13 14:01:49 +0000 >I don't see how this would be related to wlroots It's related to not having ext_data_control 2484406 6 nicolas.fella 2026-01-13 14:08:04 +0000 Git commit 9cf68eef2543afebc74d2a87aee1d49ef392c11c by Nicolas Fella. Committed on 13/01/2026 at 13:53. Pushed by nicolasfella into branch 'master'. ksystemclipboard: Check m_thread in destructor The thread might be null M +1 -1 src/systemclipboard/waylandclipboard.cpp https://invent.kde.org/frameworks/kguiaddons/-/commit/9cf68eef2543afebc74d2a87aee1d49ef392c11c 2484407 7 nicolas.fella 2026-01-13 14:12:57 +0000 Git commit 3ce4f13705b6d5c0381d7cf156580327597fd65b by Nicolas Fella. Committed on 13/01/2026 at 14:12. Pushed by nicolasfella into branch 'Frameworks/6.22'. ksystemclipboard: Check m_thread in destructor The thread might be null (cherry picked from commit 9cf68eef2543afebc74d2a87aee1d49ef392c11c) M +1 -1 src/systemclipboard/waylandclipboard.cpp https://invent.kde.org/frameworks/kguiaddons/-/commit/3ce4f13705b6d5c0381d7cf156580327597fd65b