Bug 501405

Application:  (6.3.2)

ApplicationNotResponding [ANR]: false
Qt Version: 6.8.2
Frameworks Version: 6.11.0
Operating System: Linux 6.13.5 x86_64
Windowing System: Wayland
Distribution: NixOS 25.05 (Warbler)
DrKonqi: 6.3.2 [CoredumpBackend]

-- Information about the crash:
I had moonlight and brave running along with file manager dolphin and system monitor that comes with KDE. 
Computer was left over night and screens where off but everything was running. When I turned the screens back in the morning one of the screens had a frozen screen while the other was running fine. The one with frozen screen had the mouse curser showing on it but I can also see it on the other screen moving with my hand. The screen where the mouse was working has moonlight running on it in windowed mode. Note I have keysboardhortcuts passed to moonlight when my mouse is over that window (it was in windowed mode)
I tried the following:
1-I closed the moonlight window but issue persisted
2-I clicked the windows button trying to stimulate the start men (kwin menu) but there was no visible response.
3-I tried disconnecting and reconnecting my mouse and keyboard 
4-I tried to change display settings on the frozen screen by changing refresh rate from 60 to 75 (which it supports) no change but now both screens froze until Kwin crashed along with my browser brave that was running on the frozen screen and restarted. (I think all windows crashed at that point).

My nixos is using flakes so here is the exact locked version 

 "nixpkgs": {
      "locked": {
        "lastModified": 1740828860,
        "narHash": "sha256-cjbHI+zUzK5CPsQZqMhE3npTyYFt9tJ3+ohcfaOF/WM=",
        "owner": "nixos",
        "repo": "nixpkgs",
        "rev": "303bd8071377433a2d8f76e684ec773d70c5b642",
        "type": "github"
      },
      "original": {
        "owner": "nixos",
        "ref": "nixos-unstable",
        "repo": "nixpkgs",
        "type": "github"
      }
    },

I enabled Kde on wayland using the following settings. I had the computer running like this for days with no issues under similar conditions. The crash report has exact binaries listed which can be deterministically reproduced with the flake lock above and the settings below. 

  # Enable the X11 windowing system.
  services.xserver.enable = true;

  # Enable the KDE Plasma Desktop Environment.
  services.displayManager.sddm.enable = true;
  services.displayManager.sddm.wayland.enable = true;
  services.desktopManager.plasma6.enable = true;
  services.displayManager.sddm.autoNumlock = true;
  # Configure keymap in X11
  services.xserver.xkb = {
    layout = "us";
    variant = "";
  };

The crash does not seem to be reproducible.

-- Backtrace:
Application: KWin (), signal: Segmentation fault


warning: Can't open file /memfd:wayland-cursor (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:sljit (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:/.glXXXXXX (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:xwayland-shared (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:unknown-usage:QtQml (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:kwayland-shared (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:JSVMStack:QtQml (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:wayland-shm (deleted) during file-backed mapping note processing

warning: Can't open file anon_inode:i915.gem during file-backed mapping note processing

warning: Can't open file /memfd:JSGCHeap:QtQml (deleted) during file-backed mapping note processing

warning: Can't open file /home/hoid/.cache/plasma_theme_default.kcache (deleted) during file-backed mapping note processing

warning: Can't open file /memfd:JITCode:QtQml (deleted) during file-backed mapping note processing

warning: core file may not match specified executable file.
[New LWP 2394]
[New LWP 315387]
[New LWP 2404]
[New LWP 2452]
[New LWP 2443]
[New LWP 315388]
[New LWP 2454]
[New LWP 2456]
[New LWP 315371]
[New LWP 315372]
[New LWP 2501]
[New LWP 2453]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libthread_db.so.1".
Core was generated by `/nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/bin/.kwin_wayland-wrapped --wayland-fd 7 --socket wayland-0 --xwayland-fd 8 --xwayland-fd 9 --xwayland-display :0 --xwayland-xauthority /run/user/1000/xauth_WIxAVL --xwayland'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f83a449916c in __pthread_kill_implementation () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
[Current thread is 1 (Thread 0x7f839e6fe100 (LWP 2394))]
warning: File "/nix/store/w1nz8qqc1l0dk6af9s36zchba3hm04ry-glib-2.82.4/lib/libgobject-2.0.so.0.8200.4-gdb.py" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load:/nix/store/2lhklm5aizx30qbw49acnrrzkj9lbmij-gcc-14-20241116-lib".
To enable execution of this file add
	add-auto-load-safe-path /nix/store/w1nz8qqc1l0dk6af9s36zchba3hm04ry-glib-2.82.4/lib/libgobject-2.0.so.0.8200.4-gdb.py
line to your configuration file "/home/hoid/.config/gdb/gdbinit".
To completely disable this security protection add
	set auto-load safe-path /
line to your configuration file "/home/hoid/.config/gdb/gdbinit".
For more information about this security protection see the
"Auto-loading safe path" section in the GDB manual.  E.g., run from the shell:
	info "(gdb)Auto-loading safe path"
warning: File "/nix/store/w1nz8qqc1l0dk6af9s36zchba3hm04ry-glib-2.82.4/lib/libglib-2.0.so.0.8200.4-gdb.py" auto-loading has been declined by your `auto-load safe-path' set to "$debugdir:$datadir/auto-load:/nix/store/2lhklm5aizx30qbw49acnrrzkj9lbmij-gcc-14-20241116-lib".
Cannot QML trace cores :(
/nix/store/c7ypgjjw0v0gxlzzdliwdl8y70ji313g-drkonqi-6.3.2/share/drkonqi/gdb/python/gdb_preamble/preamble.py:547: DeprecationWarning: datetime.datetime.utcfromtimestamp() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.fromtimestamp(timestamp, datetime.UTC).
  boot_time = datetime.utcfromtimestamp(psutil.boot_time()).strftime('%Y-%m-%dT%H:%M:%S')
Unexpectedly stumbled over an objfile (/nix/store/jbnm36wq89c7iws6xx6xvv75h0drv48x-icu4c-76.1/lib/libicuuc.so.76.1) without build_id. Not creating payload.
[Current thread is 1 (Thread 0x7f839e6fe100 (LWP 2394))]

Thread 12 (Thread 0x7f83893fb6c0 (LWP 2453)):
#0  0x00007f83a449381e in __futex_abstimed_wait_common () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#1  0x00007f83a4496490 in pthread_cond_wait@@GLIBC_2.3.2 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#2  0x00007f83a8589f41 in KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}::operator()() const () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#3  0x00007f83a858a275 in std::_Function_handler<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> (), std::__future_base::_Task_setter<std::unique_ptr<std::__future_base::_Result<void>, std::__future_base::_Result_base::_Deleter>, std::thread::_Invoker<std::tuple<QThread::create<KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}>(KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}&&)::{lambda((auto:1&&)...)#1}> >, void> >::_M_invoke(std::_Any_data const&) () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#4  0x00007f83a858a609 in std::__future_base::_State_baseV2::_M_do_set(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*) () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#5  0x00007f83a449c5d7 in __pthread_once_slow.isra.0 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#6  0x00007f83a449c651 in pthread_once@GLIBC_2.2.5 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#7  0x00007f83a8586b04 in std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<QThread::create<KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}>(KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}&&)::{lambda((auto:1&&)...)#1}> >, void>::_M_complete_async() () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#8  0x00007f83a4ecdac3 in QThreadCreateThread::run() () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#9  0x00007f83a4f6e53f in QThreadPrivate::start(void*) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#10 0x00007f83a44972e3 in start_thread () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#11 0x00007f83a451b2fc in __clone3 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6

Thread 11 (Thread 0x7f835b3ff6c0 (LWP 2501)):
#0  0x00007f83a450d34e in ppoll () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#1  0x00007f83a3e5731b in g_main_context_iterate_unlocked.isra () from /nix/store/w1nz8qqc1l0dk6af9s36zchba3hm04ry-glib-2.82.4/lib/libglib-2.0.so.0
#2  0x00007f83a3e57a5c in g_main_context_iteration () from /nix/store/w1nz8qqc1l0dk6af9s36zchba3hm04ry-glib-2.82.4/lib/libglib-2.0.so.0
#3  0x00007f83a50a9ca3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#4  0x00007f83a4db1a1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#5  0x00007f83a4ecd5d0 in QThread::exec() () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#6  0x00007f83a4f6e53f in QThreadPrivate::start(void*) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#7  0x00007f83a44972e3 in start_thread () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#8  0x00007f83a451b2fc in __clone3 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6

Thread 10 (Thread 0x7f83157eb6c0 (LWP 315372)):
#0  0x00007f83a449381e in __futex_abstimed_wait_common () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#1  0x00007f83a4496490 in pthread_cond_wait@@GLIBC_2.3.2 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#2  0x00007f83959cc6f9 in cnd_wait () from /nix/store/pzr5nvrk6l9f635inynvh66wmzj0zz4p-mesa-24.3.4-drivers/lib/libgallium-24.3.4.so
#3  0x00007f8395996adb in util_queue_thread_func () from /nix/store/pzr5nvrk6l9f635inynvh66wmzj0zz4p-mesa-24.3.4-drivers/lib/libgallium-24.3.4.so
#4  0x00007f83959cc627 in impl_thrd_routine () from /nix/store/pzr5nvrk6l9f635inynvh66wmzj0zz4p-mesa-24.3.4-drivers/lib/libgallium-24.3.4.so
#5  0x00007f83a44972e3 in start_thread () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#6  0x00007f83a451b2fc in __clone3 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6

Thread 9 (Thread 0x7f8314fea6c0 (LWP 315371)):
#0  0x00007f83a449381e in __futex_abstimed_wait_common () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#1  0x00007f83a4496490 in pthread_cond_wait@@GLIBC_2.3.2 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#2  0x00007f83959cc6f9 in cnd_wait () from /nix/store/pzr5nvrk6l9f635inynvh66wmzj0zz4p-mesa-24.3.4-drivers/lib/libgallium-24.3.4.so
#3  0x00007f8395996adb in util_queue_thread_func () from /nix/store/pzr5nvrk6l9f635inynvh66wmzj0zz4p-mesa-24.3.4-drivers/lib/libgallium-24.3.4.so
#4  0x00007f83959cc627 in impl_thrd_routine () from /nix/store/pzr5nvrk6l9f635inynvh66wmzj0zz4p-mesa-24.3.4-drivers/lib/libgallium-24.3.4.so
#5  0x00007f83a44972e3 in start_thread () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#6  0x00007f83a451b2fc in __clone3 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6

Thread 8 (Thread 0x7f83835fe6c0 (LWP 2456)):
#0  0x00007f83a450d34e in ppoll () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#1  0x00007f83a3e5731b in g_main_context_iterate_unlocked.isra () from /nix/store/w1nz8qqc1l0dk6af9s36zchba3hm04ry-glib-2.82.4/lib/libglib-2.0.so.0
#2  0x00007f83a3e57a5c in g_main_context_iteration () from /nix/store/w1nz8qqc1l0dk6af9s36zchba3hm04ry-glib-2.82.4/lib/libglib-2.0.so.0
#3  0x00007f83a50a9ca3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#4  0x00007f83a4db1a1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#5  0x00007f83a4ecd5d0 in QThread::exec() () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#6  0x00007f83a4f6e53f in QThreadPrivate::start(void*) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#7  0x00007f83a44972e3 in start_thread () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#8  0x00007f83a451b2fc in __clone3 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6

Thread 7 (Thread 0x7f8388bfa6c0 (LWP 2454)):
#0  0x00007f83a449381e in __futex_abstimed_wait_common () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#1  0x00007f83a4496490 in pthread_cond_wait@@GLIBC_2.3.2 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#2  0x00007f83a8589f41 in KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}::operator()() const () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#3  0x00007f83a858a275 in std::_Function_handler<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> (), std::__future_base::_Task_setter<std::unique_ptr<std::__future_base::_Result<void>, std::__future_base::_Result_base::_Deleter>, std::thread::_Invoker<std::tuple<QThread::create<KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}>(KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}&&)::{lambda((auto:1&&)...)#1}> >, void> >::_M_invoke(std::_Any_data const&) () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#4  0x00007f83a858a609 in std::__future_base::_State_baseV2::_M_do_set(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*) () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#5  0x00007f83a449c5d7 in __pthread_once_slow.isra.0 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#6  0x00007f83a449c651 in pthread_once@GLIBC_2.2.5 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#7  0x00007f83a8586b04 in std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<QThread::create<KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}>(KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}&&)::{lambda((auto:1&&)...)#1}> >, void>::_M_complete_async() () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#8  0x00007f83a4ecdac3 in QThreadCreateThread::run() () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#9  0x00007f83a4f6e53f in QThreadPrivate::start(void*) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#10 0x00007f83a44972e3 in start_thread () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#11 0x00007f83a451b2fc in __clone3 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6

Thread 6 (Thread 0x7f834b1f46c0 (LWP 315388)):
#0  0x00007f83a449381e in __futex_abstimed_wait_common () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#1  0x00007f83a4496490 in pthread_cond_wait@@GLIBC_2.3.2 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#2  0x00007f83a8589f41 in KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}::operator()() const () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#3  0x00007f83a858a275 in std::_Function_handler<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> (), std::__future_base::_Task_setter<std::unique_ptr<std::__future_base::_Result<void>, std::__future_base::_Result_base::_Deleter>, std::thread::_Invoker<std::tuple<QThread::create<KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}>(KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}&&)::{lambda((auto:1&&)...)#1}> >, void> >::_M_invoke(std::_Any_data const&) () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#4  0x00007f83a858a609 in std::__future_base::_State_baseV2::_M_do_set(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*) () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#5  0x00007f83a449c5d7 in __pthread_once_slow.isra.0 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#6  0x00007f83a449c651 in pthread_once@GLIBC_2.2.5 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#7  0x00007f83a8586b04 in std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<QThread::create<KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}>(KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}&&)::{lambda((auto:1&&)...)#1}> >, void>::_M_complete_async() () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#8  0x00007f83a4ecdac3 in QThreadCreateThread::run() () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#9  0x00007f83a4f6e53f in QThreadPrivate::start(void*) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#10 0x00007f83a44972e3 in start_thread () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#11 0x00007f83a451b2fc in __clone3 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6

Thread 5 (Thread 0x7f838a3fd6c0 (LWP 2443)):
#0  0x00007f83a449381e in __futex_abstimed_wait_common () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#1  0x00007f83a4496490 in pthread_cond_wait@@GLIBC_2.3.2 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#2  0x00007f83a8589e5f in KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}::operator()() const () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#3  0x00007f83a858a275 in std::_Function_handler<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> (), std::__future_base::_Task_setter<std::unique_ptr<std::__future_base::_Result<void>, std::__future_base::_Result_base::_Deleter>, std::thread::_Invoker<std::tuple<QThread::create<KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}>(KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}&&)::{lambda((auto:1&&)...)#1}> >, void> >::_M_invoke(std::_Any_data const&) () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#4  0x00007f83a858a609 in std::__future_base::_State_baseV2::_M_do_set(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*) () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#5  0x00007f83a449c5d7 in __pthread_once_slow.isra.0 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#6  0x00007f83a449c651 in pthread_once@GLIBC_2.2.5 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#7  0x00007f83a8586b04 in std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<QThread::create<KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}>(KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}&&)::{lambda((auto:1&&)...)#1}> >, void>::_M_complete_async() () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#8  0x00007f83a4ecdac3 in QThreadCreateThread::run() () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#9  0x00007f83a4f6e53f in QThreadPrivate::start(void*) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#10 0x00007f83a44972e3 in start_thread () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#11 0x00007f83a451b2fc in __clone3 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6

Thread 4 (Thread 0x7f8389bfc6c0 (LWP 2452)):
#0  0x00007f83a449381e in __futex_abstimed_wait_common () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#1  0x00007f83a4496490 in pthread_cond_wait@@GLIBC_2.3.2 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#2  0x00007f83a8589f41 in KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}::operator()() const () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#3  0x00007f83a858a275 in std::_Function_handler<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> (), std::__future_base::_Task_setter<std::unique_ptr<std::__future_base::_Result<void>, std::__future_base::_Result_base::_Deleter>, std::thread::_Invoker<std::tuple<QThread::create<KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}>(KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}&&)::{lambda((auto:1&&)...)#1}> >, void> >::_M_invoke(std::_Any_data const&) () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#4  0x00007f83a858a609 in std::__future_base::_State_baseV2::_M_do_set(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*) () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#5  0x00007f83a449c5d7 in __pthread_once_slow.isra.0 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#6  0x00007f83a449c651 in pthread_once@GLIBC_2.2.5 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#7  0x00007f83a8586b04 in std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<QThread::create<KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}>(KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}&&)::{lambda((auto:1&&)...)#1}> >, void>::_M_complete_async() () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#8  0x00007f83a4ecdac3 in QThreadCreateThread::run() () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#9  0x00007f83a4f6e53f in QThreadPrivate::start(void*) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#10 0x00007f83a44972e3 in start_thread () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#11 0x00007f83a451b2fc in __clone3 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6

Thread 3 (Thread 0x7f839dfff6c0 (LWP 2404)):
#0  0x00007f83a450d34e in ppoll () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#1  0x00007f83a3e5731b in g_main_context_iterate_unlocked.isra () from /nix/store/w1nz8qqc1l0dk6af9s36zchba3hm04ry-glib-2.82.4/lib/libglib-2.0.so.0
#2  0x00007f83a3e57a5c in g_main_context_iteration () from /nix/store/w1nz8qqc1l0dk6af9s36zchba3hm04ry-glib-2.82.4/lib/libglib-2.0.so.0
#3  0x00007f83a50a9ca3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#4  0x00007f83a4db1a1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#5  0x00007f83a4ecd5d0 in QThread::exec() () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#6  0x00007f83a5e5ba1e in QDBusConnectionManager::run() () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6DBus.so.6
#7  0x00007f83a4f6e53f in QThreadPrivate::start(void*) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#8  0x00007f83a44972e3 in start_thread () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#9  0x00007f83a451b2fc in __clone3 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6

Thread 2 (Thread 0x7f833fd396c0 (LWP 315387)):
#0  0x00007f83a449381e in __futex_abstimed_wait_common () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#1  0x00007f83a4496490 in pthread_cond_wait@@GLIBC_2.3.2 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#2  0x00007f83a8589f41 in KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}::operator()() const () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#3  0x00007f83a858a275 in std::_Function_handler<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> (), std::__future_base::_Task_setter<std::unique_ptr<std::__future_base::_Result<void>, std::__future_base::_Result_base::_Deleter>, std::thread::_Invoker<std::tuple<QThread::create<KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}>(KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}&&)::{lambda((auto:1&&)...)#1}> >, void> >::_M_invoke(std::_Any_data const&) () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#4  0x00007f83a858a609 in std::__future_base::_State_baseV2::_M_do_set(std::function<std::unique_ptr<std::__future_base::_Result_base, std::__future_base::_Result_base::_Deleter> ()>*, bool*) () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#5  0x00007f83a449c5d7 in __pthread_once_slow.isra.0 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#6  0x00007f83a449c651 in pthread_once@GLIBC_2.2.5 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#7  0x00007f83a8586b04 in std::__future_base::_Deferred_state<std::thread::_Invoker<std::tuple<QThread::create<KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}>(KWin::DrmCommitThread::DrmCommitThread(KWin::DrmGpu*, QString const&)::{lambda()#1}&&)::{lambda((auto:1&&)...)#1}> >, void>::_M_complete_async() () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#8  0x00007f83a4ecdac3 in QThreadCreateThread::run() () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#9  0x00007f83a4f6e53f in QThreadPrivate::start(void*) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#10 0x00007f83a44972e3 in start_thread () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6
#11 0x00007f83a451b2fc in __clone3 () from /nix/store/6q2mknq81cyscjmkv72fpcsvan56qhmg-glibc-2.40-66/lib/libc.so.6

Thread 1 (Thread 0x7f839e6fe100 (LWP 2394)):
[KCrash Handler]
#4  0x00007f83a583c7a4 in QRegion::isEmpty() const () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Gui.so.6
#5  0x00007f83a8249d2d in KWin::OutputLayer::needsRepaint() const () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#6  0x00007f83a82215dd in KWin::WaylandCompositor::composite(KWin::RenderLoop*) () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#7  0x00007f83a4e0c2e0 in void doActivate<false>(QObject*, int, void**) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#8  0x00007f83a824f0b2 in KWin::RenderLoop::frameRequested(KWin::RenderLoop*) () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#9  0x00007f83a8250296 in KWin::RenderLoopPrivate::dispatch() () from /nix/store/axg8jnlfnpdpgglsc1c2zwixw15a2h9n-kwin-6.3.2.1/lib/libkwin.so.6
#10 0x00007f83a4e0c2e0 in void doActivate<false>(QObject*, int, void**) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#11 0x00007f83a4e1c42e in QTimer::timeout(QTimer::QPrivateSignal) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#12 0x00007f83a4dfd665 in QObject::event(QEvent*) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#13 0x00007f83a61a0a29 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Widgets.so.6
#14 0x00007f83a4da3b40 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#15 0x00007f83a4f6ca2f in QTimerInfoList::activateTimers() () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#16 0x00007f83a4f7101d in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#17 0x00007f83a5bb2d11 in QUnixEventDispatcherQPA::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Gui.so.6
#18 0x00007f83a4db1a1a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#19 0x00007f83a4daceea in QCoreApplication::exec() () from /nix/store/ma3srbzm2ws7impa7ixw6qh623sd8bax-qtbase-6.8.2/lib/libQt6Core.so.6
#20 0x0000000000448565 in main ()

Reported using DrKonqi