SUMMARY I'm not sure if this is duplicate, but I updated to Plasma 6.6.0 for features. I installed Karousel for scrollable window manager, but I found a bug that crashes the shortcuts window when typing a plus sign in-between a case character STEPS TO REPRODUCE 1. Open settings 2. Go to shortcuts 3. Type "a+b" in the search bar, delete the last character, then repeat typing multiple single characters until it crashes. OBSERVED RESULT I open the Konsole and launch the "kcmshell6 kcm_keys" command to see the log, and this is the result. "qrc:/kcm/kcm_keys/main.qml:261:33: Unable to assign [undefined] to bool Segmentation fault (core dumped) kcmshell6 kcm_keys" EXPECTED RESULT The crash should be fixed in later versions. SOFTWARE/OS VERSIONS Linux/KDE Plasma: Arch Linux KDE Plasma Version: 6.6.0 KDE Frameworks Version: 6.23.0 Qt Version: 6.10.2
Can confirm Operating System: KDE Linux 2026-02-22 KDE Plasma Version: 6.6.80 KDE Frameworks Version: 6.24.0 Qt Version: 6.10.2 Kernel Version: 6.18.9-zen1-2-zen (64-bit) Graphics Platform: Wayland Processors: 12 × AMD Ryzen 5 3600 6-Core Processor Memory: 16 GiB of RAM (15.5 GiB usable) Graphics Processor: AMD Radeon RX 6600
Backtrace I got for this, something is missing, will need to run this through gdb to hopefully get more info Program terminated with signal SIGSEGV, Segmentation fault. #0 __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=11, no_tid=no_tid@entry=0) at pthread_kill.c:44 44 return INTERNAL_SYSCALL_ERROR_P (ret) ? INTERNAL_SYSCALL_ERRNO (ret) : 0; [Current thread is 1 (Thread 0x7f90df41c080 (LWP 47134))] (gdb) bt #0 __pthread_kill_implementation (threadid=<optimized out>, signo=signo@entry=11, no_tid=no_tid@entry=0) at pthread_kill.c:44 #1 0x00007f90e57acaf3 in __pthread_kill_internal (threadid=<optimized out>, signo=11) at pthread_kill.c:89 #2 0x00007f90e57521a0 in __GI_raise (sig=11) at ../sysdeps/posix/raise.c:26 #3 0x00007f90e7822e65 in KCrash::defaultCrashHandler (sig=11) at /usr/src/debug/kde-banana-kcrash-git/kcrash/src/kcrash.cpp:623 #4 0x00007f90e57522d0 in <signal handler called> () at /usr/lib/libc.so.6 #5 std::__atomic_base<QObjectPrivate::Connection*>::load (this=0xf1, __m=std::memory_order_acquire) at /usr/include/c++/15.2.1/bits/atomic_base.h:828 #6 std::atomic<QObjectPrivate::Connection*>::load (this=0xf1, __m=std::memory_order_acquire) at /usr/include/c++/15.2.1/atomic:586 #7 QAtomicOps<QObjectPrivate::Connection*>::loadAcquire<QObjectPrivate::Connection*> (_q_value=<error reading variable: Cannot access memory at address 0xf1>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qatomic_cxx11.h:215 #8 QBasicAtomicPointer<QObjectPrivate::Connection>::loadAcquire (this=0xf1) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qbasicatomic.h:178 #9 QObjectPrivate::maybeSignalConnected (this=0x7f90e58fbb48 <main_arena+136>, signalIndex=4) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:458 #10 0x00007f90e5e8fbae in doActivate<false> (sender=0x563834d49540, signal_index=4, argv=0x7fffa4a9f308) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:4172 #11 0x00007f90e53ab477 in QQmlDelegateModelItem::rowChanged (this=0x563834d49540) at /usr/src/debug/qt6-declarative/build/src/qmlmodels/QmlModels_autogen/include/moc_qqmldelegatemodel_p_p.cpp:163 #12 QQmlDelegateModelItem::setModelIndex (this=0x563834d49540, idx=<optimized out>, newRow=<optimized out>, newColumn=<optimized out>, alwaysEmit=false) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qmlmodels/qqmldelegatemodel.cpp:2548 #13 0x00007f90e53a7c8a in QQmlDelegateModel::_q_itemsInserted (this=this@entry=0x563832d38290, index=index@entry=0, count=count@entry=1) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qmlmodels/qqmldelegatemodel.cpp:1687 #14 0x00007f90e53a884d in QQmlDelegateModel::setRootIndex (this=0x563832d38290, root=<optimized out>) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qmlmodels/qqmldelegatemodel.cpp:534 #15 0x00007f90e53bea22 in QQmlDelegateModel::qt_metacall (this=0x563832d38290, _c=QMetaObject::WriteProperty, _id=7, _a=0x7fffa4a9f540) at /usr/src/debug/qt6-declarative/build/src/qmlmodels/QmlModels_autogen/include/moc_qqmldelegatemodel_p.cpp:372 #16 0x00007f90e7d45513 in QQmlPropertyData::doMetacall<(QMetaObject::Call)2> (this=<optimized out>, object=<optimized out>, idx=<optimized out>, argv=0x7fffa4a9f540) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/qml/qqmlpropertydata_p.h:397 #17 QQmlPropertyData::doMetacall<(QMetaObject::Call)2> --Type <RET> for more, q to quit, c to continue without paging--c (this=<optimized out>, object=<optimized out>, idx=<optimized out>, argv=0x7fffa4a9f540) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/qml/qqmlpropertydata_p.h:392 #18 QQmlPropertyData::writeProperty (this=<optimized out>, target=<optimized out>, value=<optimized out>, flags=...) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/qml/qqmlpropertydata_p.h:415 #19 0x00007f90e7e1e638 in QQmlPropertyPrivate::write (object=0x563832d38290, property=..., value=..., context=..., flags=...) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/qml/qqmlproperty.cpp:1956 #20 0x00007f90e7cbe52f in QV4::QObjectWrapper::setProperty (engine=engine@entry=0x563831a50ab0, object=object@entry=0x563832d38290, property=0x7f90906ff3f0, value=...) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/jsruntime/qv4qobjectwrapper.cpp:795 #21 0x00007f90e7cbef71 in QV4::QObjectWrapper::setQmlProperty (engine=engine@entry=0x563831a50ab0, qmlContext=..., object=0x563832d38290, name=name@entry=0x7f90adfde5b0, flags=..., flags@entry=..., value=...) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/jsruntime/qv4qobjectwrapper.cpp:580 #22 0x00007f90e7cbf118 in QV4::QObjectWrapper::virtualPut (m=0x7f90adfde5a0, id=..., value=..., receiver=0x7f90adfde5a0) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/jsruntime/qv4qobjectwrapper.cpp:980 #23 0x00007f90e7c9341d in QV4::Object::put (receiver=<optimized out>, this=<optimized out>, name=<optimized out>, v=...) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/jsruntime/qv4string_p.h:141 #24 QV4::Lookup::setterFallback (lookup=0x563832354c88, engine=0x563831a50ab0, object=<optimized out>, value=...) at /usr/src/debug/qt6-declarative/qtdeclarative/src/qml/jsruntime/qv4lookup.cpp:664 #25 0x00007f907028f683 in ??? () #26 0x00007fffa4aa0140 in ??? () #27 0x0000563831a50ab0 in ??? () #28 0x0000000000000000 in ??? ()
A possibly relevant merge request was started @ https://invent.kde.org/plasma/plasma-desktop/-/merge_requests/3575
*** Bug 516607 has been marked as a duplicate of this bug. ***
*** Bug 516763 has been marked as a duplicate of this bug. ***
Git commit e6023ff02ec3b1f3f081b07f6b942cfb2b9c0793 by Akseli Lahtinen. Committed on 27/02/2026 at 14:08. Pushed by akselmo into branch 'master'. keys/FilteredModel: Remove deprecated invalidation, check if currentItem exists invalidateFilter is deprecated, begin/endFilterChange instead. During deletion or rapid changes, currentItem can be null. In those cases, reset the index to -1 and return early to avoid working on null item. This fixes crashing when user changes search filter rapidly. Related: bug 516607 M +4 -2 kcms/keys/filteredmodel.cpp M +7 -1 kcms/keys/ui/main.qml https://invent.kde.org/plasma/plasma-desktop/-/commit/e6023ff02ec3b1f3f081b07f6b942cfb2b9c0793
Git commit 7160d3bee99eda83c934a1a638cbb4d6cd52e91d by Akseli Lahtinen. Committed on 27/02/2026 at 14:40. Pushed by akselmo into branch 'Plasma/6.6'. keys/FilteredModel: Remove deprecated invalidation, check if currentItem exists invalidateFilter is deprecated, begin/endFilterChange instead. During deletion or rapid changes, currentItem can be null. In those cases, reset the index to -1 and return early to avoid working on null item. This fixes crashing when user changes search filter rapidly. Related: bug 516607 (cherry picked from commit e6023ff02ec3b1f3f081b07f6b942cfb2b9c0793) M +4 -2 kcms/keys/filteredmodel.cpp M +7 -1 kcms/keys/ui/main.qml https://invent.kde.org/plasma/plasma-desktop/-/commit/7160d3bee99eda83c934a1a638cbb4d6cd52e91d