Created attachment 164553 [details] backtrace from lldb SUMMARY Crash is happening somewhere in libQt6Gui.so.6 after the shell is started, i.e. when lldb stopped execution of the shell i had a still image of it and my wallpaper. STEPS TO REPRODUCE 1. start plasmashell 2. wait a little bit 3. observe crash OBSERVED RESULT plasmashell exits with sigsegv EXPECTED RESULT plasmashell starts and runs normally SOFTWARE/OS VERSIONS Linux/KDE Plasma: (available in About System) KDE Plasma Version: upstream KDE Frameworks Version: upstream Qt Version: 6.6.1 ADDITIONAL INFORMATION
Created attachment 164554 [details] backtrace from gdb
This is almost certainly a Qt bug. https://bugreports.qt.io/browse/QTBUG-72779 looks similar. Does it still happen after changing the wallpaper?
#0 0x00007ffff5f8da7b in fetchTransformedBilinear64<(TextureBlendType)4>(QRgba64*, Operator const*, QSpanData const*, int, int, int) (buffer=0x7fffd8bca740, data=0x7fffde56dc28, y=64, x=0, length=128) at /var/tmp/portage/dev-qt/qtbase-6.6.1-r1/work/qtbase-everywhere-src-6.6.1/src/gui/painting/qdrawhelper.cpp:2799 #1 0x00007ffff5f9c442 in BlendSrcGenericRGB64::fetch(int, int, int, bool) (this=0x7fffd8bc6720, x=0, y=64, len=128, fetchDest=true) at /var/tmp/portage/dev-qt/qtbase-6.6.1-r1/work/qtbase-everywhere-src-6.6.1/src/gui/painting/qdrawhelper.cpp:4079 process_length = 128 l = 128 process_x = 0 src = <optimized out> offset = <optimized out> y = 64 length = <optimized out> x = 0 right = <optimized out> fetchDest = true c = 64 handler = {<QBlendBase> = {data = 0x7fffde56dc28, op = @0x7fffffffab18}, dest = 0x7fffd8bc6740, buffer = {{rgba = 0} <repeats 2030 times>, {rgba = 48}, {rgba = 66}, {rgba = 1}, {rgba = 190}, {rgba = 1}, {rgba = 140737320173497}, {rgba = 0}, {rgba = 1095233437696}, {rgba = 140737488329344}, {rgba = 824633720832}, {rgba = 279172874321}, {rgba = 210453397553}, {rgba = 192}, {rgba = 140736829638464}, {rgba = 140736927530440}, {rgba = 140737488329640}, {rgba = 140736923033524}, {rgba = 0}}, src_buffer = {{rgba = 0} <repeats 989 times>, {rgba = 140737353882218}, {rgba = 0}, {rgba = 140736979869696}, {rgba = 133}, {rgba = 1}, {rgba = 2147483647}, {rgba = 140736979869700}, {rgba = 140737035083664}, {rgba = 140737353796264}, {rgba = 0}, {rgba = 0}, {rgba = 0}, {rgba = 0}, {rgba = 0}, {rgba = 0}, {rgba = 9585933150906089685}, {rgba = 93824993553320}, {rgba = 0}, {rgba = 140737353794908}, {rgba = 9585933150906089685}, {rgba = 140737033949120}, {rgba = 1}, {rgba = 140736980051744}, {rgba = 140737034246528}, {rgba = 1}, {rgba = 140737033949120}, {rgba = 140737315144259}, {rgba = 9585933150906089685}, {rgba = 140737310697613}, {rgba = 140733747036160}, {rgba = 140737315144244}, {rgba = 140737040278000}, {rgba = 18356690227379}, {rgba = 140737033955424}, {rgba = 0}, {rgba = 3028680688682928394}, {rgba = 0}, {rgba = 2812225327735506953}, {rgba = 2668110139626031113}, {rgba = 2596052541259581448}, {rgba = 2451936253655320328}, {rgba = 2379597184607061768}, {rgba = 2235481992219461383}, {rgba = 2163423298636350983}, {rgba = 2019026631272039943}, {rgba = 1946969037200492038}, {rgba = 1802852749596230918}, {rgba = 1658737557191853318}, {rgba = 1586398488160371973}, {rgba = 1442282200539333637}, {rgba = 1370224602189661189}, {rgba = 1225827939103474692}, {rgba = 1153769245537141764}, {rgba = 1009654053132763907}, {rgba = 937314984101348099}, {rgba = 793198696480244483}, {rgba = 721141098113794562}, {rgba = 577025910021161474}, {rgba = 504685741461275138}, {rgba = 100729089}, {rgba = 0} <repeats 951 times>, {rgba = 325236571}, {rgba = 140736829646384}, {rgba = 0}, {rgba = 140737354048960}, {rgba = 140736829647732}, {rgba = 0}, {rgba = 29}, {rgba = 0}, {rgba = 128}, {rgba = 140736829646516}, {rgba = 140736829646384}, {rgba = 140737354045480}, {rgba = 0}, {rgba = 140736829646516}, {rgba = 29}, {rgba = 999999800}, {rgba = 9585933150906089685}, {rgba = 1}, {rgba = 1}, {rgba = 2}, {rgba = 140736988328552}, {rgba = 140736829646592}, {rgba = 140736829646516}, {rgba = 140737354051181}, {rgba = 140736923924592}, {rgba = 140736988328512}, {rgba = 0}, {rgba = 4294941304}, {rgba = 0}, {rgba = 0}, {rgba = 4294967297}, {rgba = 0}, {rgba = 0}, {rgba = 0}, {rgba = 2678325236371}, {rgba = 140736988328552}, {rgba = 140736988328512}, {rgba = 4294967296}, {rgba = 9223372036854775807}, {rgba = 140737310723175}, {rgba = 2678}, {rgba = 325236371}, {rgba = 2678325236371}, {rgba = 4294967296}, {rgba = 9585933150906089685}, {rgba = 140737041314808}, {rgba = 140737034246544}, {rgba = 140736924692080}}} coverage = 0 #2 handleSpans<BlendSrcGenericRGB64>(int, QT_FT_Span_ const*, QSpanData const*, Operator const&)::{lambda(int, int)#1}::operator()(int, int) const (this=0x7fffffffaa90, cStart=<optimized out>, cEnd=128) at /var/tmp/portage/dev-qt/qtbase-6.6.1-r1/work/qtbase-everywhere-src-6.6.1/src/gui/painting/qdrawhelper.cpp:3993 process_length = 128 l = 128 process_x = 0 src = <optimized out> offset = <optimized out> y = 64 length = <optimized out> x = 0 right = <optimized out> fetchDest = true c = 64 handler = {<QBlendBase> = {data = 0x7fffde56dc28, op = @0x7fffffffab18}, dest = 0x7fffd8bc6740, buffer = {{rgba = 0} <repeats 2030 times>, {rgba = 48}, {rgba = 66}, {rgba = 1}, {rgba = 190}, {rgba = 1}, {rgba = 140737320173497}, {rgba = 0}, {rgba = 1095233437696}, {rgba = 140737488329344}, {rgba = 824633720832}, {rgba = 279172874321}, {rgba = 210453397553}, {rgba = 192}, {rgba = 140736829638464}, {rgba = 140736927530440}, {rgba = 140737488329640}, {rgba = 140736923033524}, {rgba = 0}}, src_buffer = {{rgba = 0} <repeats 989 times>, {rgba = 140737353882218}, {rgba = 0}, {rgba = 140736979869696}, {rgba = 133}, {rgba = 1}, {rgba = 2147483647}, {rgba = 140736979869700}, {rgba = 140737035083664}, {rgba = 140737353796264}, {rgba = 0}, {rgba = 0}, {rgba = 0}, {rgba = 0}, {rgba = 0}, {rgba = 0}, {rgba = 9585933150906089685}, {rgba = 93824993553320}, {rgba = 0}, {rgba = 140737353794908}, {rgba = 9585933150906089685}, {rgba = 140737033949120}, {rgba = 1}, {rgba = 140736980051744}, {rgba = 140737034246528}, {rgba = 1}, {rgba = 140737033949120}, {rgba = 140737315144259}, {rgba = 9585933150906089685}, {rgba = 140737310697613}, {rgba = 140733747036160}, {rgba = 140737315144244}, {rgba = 140737040278000}, {rgba = 18356690227379}, {rgba = 140737033955424}, {rgba = 0}, {rgba = 3028680688682928394}, {rgba = 0}, {rgba = 2812225327735506953}, {rgba = 2668110139626031113}, {rgba = 2596052541259581448}, {rgba = 2451936253655320328}, {rgba = 2379597184607061768}, {rgba = 2235481992219461383}, {rgba = 2163423298636350983}, {rgba = 2019026631272039943}, {rgba = 1946969037200492038}, {rgba = 1802852749596230918}, {rgba = 1658737557191853318}, {rgba = 1586398488160371973}, {rgba = 1442282200539333637}, {rgba = 1370224602189661189}, {rgba = 1225827939103474692}, {rgba = 1153769245537141764}, {rgba = 1009654053132763907}, {rgba = 937314984101348099}, {rgba = 793198696480244483}, {rgba = 721141098113794562}, {rgba = 577025910021161474}, {rgba = 504685741461275138}, {rgba = 100729089}, {rgba = 0} <repeats 951 times>, {rgba = 325236571}, {rgba = 140736829646384}, {rgba = 0}, {rgba = 140737354048960}, {rgba = 140736829647732}, {rgba = 0}, {rgba = 29}, {rgba = 0}, {rgba = 128}, {rgba = 140736829646516}, {rgba = 140736829646384}, {rgba = 140737354045480}, {rgba = 0}, {rgba = 140736829646516}, {rgba = 29}, {rgba = 999999800}, {rgba = 9585933150906089685}, {rgba = 1}, {rgba = 1}, {rgba = 2}, {rgba = 140736988328552}, {rgba = 140736829646592}, {rgba = 140736829646516}, {rgba = 140737354051181}, {rgba = 140736923924592}, {rgba = 140736988328512}, {rgba = 0}, {rgba = 4294941304}, {rgba = 0}, {rgba = 0}, {rgba = 4294967297}, {rgba = 0}, {rgba = 0}, {rgba = 0}, {rgba = 2678325236371}, {rgba = 140736988328552}, {rgba = 140736988328512}, {rgba = 4294967296}, {rgba = 9223372036854775807}, {rgba = 140737310723175}, {rgba = 2678}, {rgba = 325236371}, {rgba = 2678325236371}, {rgba = 4294967296}, {rgba = 9585933150906089685}, {rgba = 140737041314808}, {rgba = 140737034246544}, {rgba = 140736924692080}}} coverage = 0 #3 0x00007ffff5f9c57e in handleSpans<BlendSrcGenericRGB64>(int, QT_FT_Span_ const*, QSpanData const*, Operator const&)::{lambda()#1}::operator()() const (this=0x7fffde2b4688) at /var/tmp/portage/dev-qt/qtbase-6.6.1-r1/work/qtbase-everywhere-src-6.6.1/src/gui/painting/qdrawhelper.cpp:4015 _this = 0x7fffde2b4680 #4 QRunnable::QGenericRunnable::Helper<handleSpans<BlendSrcGenericRGB64>(int, QT_FT_Span_ const*, QSpanData const*, Operator const&)::{lambda()#1}>::impl(QRunnable::QGenericRunnable::HelperBase::Op, QRunnable::QGenericRunnable::HelperBase*, void*) (op=<optimized out>, that=0x7fffde2b4680, arg=<optimized out>) at include/QtCore/../../../qtbase-everywhere-src-6.6.1/src/corelib/thread/qrunnable.h:73 _this = 0x7fffde2b4680 #5 0x00007ffff5693002 in QThreadPoolThread::run() (this=0x7fffe4eed980) at /var/tmp/portage/dev-qt/qtbase-6.6.1-r1/work/qtbase-everywhere-src-6.6.1/src/corelib/thread/qthreadpool.cpp:66 page = <optimized out> r = 0x7fffde2b4c90 locker = {m_mutex = 0x7fffe55ab3f8, m_isLocked = false} #6 0x00007ffff5690068 in QThreadPrivate::start(void*)::$_0::operator()() const (this=<optimized out>) at /var/tmp/portage/dev-qt/qtbase-6.6.1-r1/work/qtbase-everywhere-src-6.6.1/src/corelib/thread/qthread_unix.cpp:324 thr = 0x7fffe4eed980 data = <optimized out> __cb = {__f = 0x7ffff56901a0 <QThreadPrivate::finish(void*)>, __x = 0x7fffe4eed980, __next = 0x0} #7 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::$_0>(QThreadPrivate::start(void*)::$_0&&) (t=<optimized out>) at /var/tmp/portage/dev-qt/qtbase-6.6.1-r1/work/qtbase-everywhere-src-6.6.1/src/corelib/thread/qthread_unix.cpp:260 __cb = {__f = 0x7ffff56901a0 <QThreadPrivate::finish(void*)>, __x = 0x7fffe4eed980, __next = 0x0} #8 QThreadPrivate::start(void*) (arg=0x7fffe4eed980) at /var/tmp/portage/dev-qt/qtbase-6.6.1-r1/work/qtbase-everywhere-src-6.6.1/src/corelib/thread/qthread_unix.cpp:283 __cb = {__f = 0x7ffff56901a0 <QThreadPrivate::finish(void*)>, __x = 0x7fffe4eed980, __next = 0x0} #9 0x00007ffff7febc8b in start (p=0x7fffd8bce8a0) at src/thread/pthread_create.c:203 args = 0x7fffd8bce8a0 #10 0x00007ffff7fee523 in __clone () at /lib/ld-musl-x86_64.so.1
https://bugreports.qt.io/browse/QTBUG-119902 is also similar
(In reply to Nicolas Fella from comment #2) > This is almost certainly a Qt bug. > https://bugreports.qt.io/browse/QTBUG-72779 looks similar. > > Does it still happen after changing the wallpaper? When I tried to change the wallpaper I discovered that the wallpaper page in systemsettings is also broken
Through the use of strace and a lot of restarting systemsettings I found out that offending wallpapers are: Elarun FlyingKonqui IceCold Kay Next Patak Volna Also, plasmashell refused to start because of something in my ~/.local/share/icons
Plasmashell launches but when I attempt to RMB on anything or hover over some icons, it crashes and/or exits abnormally
(In reply to Timur Mangliev from comment #7) > Plasmashell launches but when I attempt to RMB on anything or hover over > some icons, it crashes and/or exits abnormally I think I'm experiencing the same issue (also on Gentoo using upstream master build). Plasmashell crashes when opening "right click" context menus (right click anywhere, left click some systray icons e.g. steam, using the keyboard's "context menu button" on the desktop, etc.) with the messages: > layershellqt: Cannot attach popup of unknown type > xdg_wm_base@3: error 3: no xdg_popup parent surface has been specified > The Wayland connection experienced a fatal error: Protocol error
(In reply to Jonas Rakebrandt from comment #8) > (In reply to Timur Mangliev from comment #7) > > Plasmashell launches but when I attempt to RMB on anything or hover over > > some icons, it crashes and/or exits abnormally > > I think I'm experiencing the same issue (also on Gentoo using upstream > master build). > Plasmashell crashes when opening "right click" context menus (right click > anywhere, left click some systray icons e.g. steam, using the keyboard's > "context menu button" on the desktop, etc.) with the messages: > > layershellqt: Cannot attach popup of unknown type > > xdg_wm_base@3: error 3: no xdg_popup parent surface has been specified > > The Wayland connection experienced a fatal error: Protocol error The author made a newer issue for this here: https://bugs.kde.org/show_bug.cgi?id=479679 but it was marked as fixed for some reason