Bug 499846

Application: kwin_x11 (6.3.0)

ApplicationNotResponding [ANR]: false
Qt Version: 6.8.2
Frameworks Version: 6.10.0
Operating System: Linux 6.11.0-1013-oem x86_64
Windowing System: X11
Distribution: KDE neon 6.2
DrKonqi: 6.3.0 [CoredumpBackend]

-- Information about the crash:
After update to Plasma 6.3.0 it's now crashing every time I plug or unplug the HDMI cable (it wasn't crashing before update for last ~6 months).

If I restart with HDMI plugged in (as usual), I get both screens working in sddm, after login the kwin crash happens [almost] instantly, other windows from saved sessions survive, but panel is gone.
If I login with HDMI unplugged the X11 session starts w/o kwin crash (IIRC), after plugging cable in it does crash instantly, but panel still works, so this is workable.
Need more time to figure out what will happen after sleep/wake, etc... but since this is crashing every time I plug/unplug, I'm just reporting straight away.

X11, KDE slimbook (AMD Radeon 780M), notebook display 2560x1600, LCD 1920x1080, kernel 6.11.0-1013-oem.
(not wayland, wayland makes the notebook hard-freeze within few hours, so it's not usable at all for me, but that's different story)

The crash can be reproduced every time.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Content of s_kcrashErrorMessage: std::unique_ptr<char []> = {get() = <optimized out>}

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

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

warning: Can't open file /memfd:unknown-usage:QtQml (deleted) during file-backed mapping note processing
[New LWP 1543]
[New LWP 1606]
[New LWP 1620]
[New LWP 1566]
[New LWP 1608]
[New LWP 1678]
[New LWP 1621]
[New LWP 1565]
[New LWP 1600]
[New LWP 1657]
[New LWP 1622]
[New LWP 1605]
[New LWP 1607]
[New LWP 1604]
[New LWP 1679]
[New LWP 1677]

warning: could not find '.gnu_debugaltlink' file for /lib/x86_64-linux-gnu/libcanberra.so.0

warning: could not find '.gnu_debugaltlink' file for /lib/x86_64-linux-gnu/libcap.so.2

warning: could not find '.gnu_debugaltlink' file for /lib/x86_64-linux-gnu/libproxy.so.1

warning: could not find '.gnu_debugaltlink' file for /lib/x86_64-linux-gnu/libtinfo.so.6

warning: could not find '.gnu_debugaltlink' file for /lib/x86_64-linux-gnu/libjxrglue.so.0

warning: could not find '.gnu_debugaltlink' file for /lib/x86_64-linux-gnu/libjpegxr.so.0
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/usr/bin/kwin_x11 --replace'.
Program terminated with signal SIGSEGV, Segmentation fault.
Download failed: Invalid argument.  Continuing without source file ./nptl/./nptl/pthread_kill.c.
#0  __pthread_kill_implementation (no_tid=0, signo=11, threadid=<optimized out>) at ./nptl/pthread_kill.c:44

warning: 44	./nptl/pthread_kill.c: No such file or directory
[Current thread is 1 (Thread 0x71c3452dcd80 (LWP 1543))]

Cannot QML trace cores :(
/usr/share/drkonqi/gdb/python/gdb_preamble/preamble.py:531: 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')
Download failed: Invalid argument.  Continuing without source file ./misc/../sysdeps/unix/sysv/linux/x86_64/clone3.S.
Download failed: Invalid argument.  Continuing without source file ./nptl/./nptl/pthread_create.c.
Download failed: Invalid argument.  Continuing without source file ./nptl/./nptl/pthread_cond_wait.c.
Download failed: Invalid argument.  Continuing without source file ./nptl/./nptl/futex-internal.c.
Download failed: Invalid argument.  Continuing without source file ./io/../sysdeps/unix/sysv/linux/poll.c.
/usr/share/drkonqi/gdb/python/gdb_preamble/preamble.py:548: DeprecationWarning: datetime.datetime.utcnow() is deprecated and scheduled for removal in a future version. Use timezone-aware objects to represent datetimes in UTC: datetime.datetime.now(datetime.UTC).
  'timestamp': datetime.utcnow().isoformat(),
[Current thread is 1 (Thread 0x71c3452dcd80 (LWP 1543))]

Thread 16 (Thread 0x71c32b4006c0 (LWP 1677)):
#0  0x000071c355e98d71 in __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5f1af418cd78) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x5f1af418cd78) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5f1af418cd78, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x000071c355e9b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5f1af418cd20, cond=0x5f1af418cd50) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x5f1af418cd50, mutex=0x5f1af418cd20) at ./nptl/pthread_cond_wait.c:627
#5  0x000071c351f5040d in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#6  0x000071c351f2ed0b in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#7  0x000071c351f5033c in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#8  0x000071c355e9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x000071c355f29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 15 (Thread 0x71c3294006c0 (LWP 1679)):
#0  0x000071c355e98d71 in __futex_abstimed_wait_common64 (private=134217728, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x71c3401000d0) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=134217728, abstime=0x0, clockid=0, expected=0, futex_word=0x71c3401000d0) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x71c3401000d0, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x000071c355e9b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x71c340100078, cond=0x71c3401000a8) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x71c3401000a8, mutex=0x71c340100078) at ./nptl/pthread_cond_wait.c:627
#5  0x000071c351f5040d in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#6  0x000071c351f2ed0b in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#7  0x000071c351f5033c in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#8  0x000071c355e9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x000071c355f29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 14 (Thread 0x71c3426006c0 (LWP 1604)):
#0  0x000071c355e98d71 in __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5f1af3916b38) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x5f1af3916b38) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5f1af3916b38, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x000071c355e9b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5f1af3916ae0, cond=0x5f1af3916b10) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x5f1af3916b10, mutex=0x5f1af3916ae0) at ./nptl/pthread_cond_wait.c:627
#5  0x000071c351f5040d in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#6  0x000071c351f2ed0b in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#7  0x000071c351f5033c in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#8  0x000071c355e9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x000071c355f29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 13 (Thread 0x71c337e006c0 (LWP 1607)):
#0  0x000071c355e98d71 in __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5f1af3928bf8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x5f1af3928bf8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5f1af3928bf8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x000071c355e9b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5f1af3928ba0, cond=0x5f1af3928bd0) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x5f1af3928bd0, mutex=0x5f1af3928ba0) at ./nptl/pthread_cond_wait.c:627
#5  0x000071c351f5040d in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#6  0x000071c351f2ed0b in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#7  0x000071c351f5033c in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#8  0x000071c355e9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x000071c355f29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 12 (Thread 0x71c341c006c0 (LWP 1605)):
#0  0x000071c355e98d71 in __futex_abstimed_wait_common64 (private=167457680, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5f1af389f684) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=167457680, abstime=0x0, clockid=0, expected=0, futex_word=0x5f1af389f684) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5f1af389f684, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x000071c355e9b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5f1af389f628, cond=0x5f1af389f658) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x5f1af389f658, mutex=0x5f1af389f628) at ./nptl/pthread_cond_wait.c:627
#5  0x000071c351f5040d in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#6  0x000071c351f2ed0b in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#7  0x000071c351f5033c in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#8  0x000071c355e9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x000071c355f29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 11 (Thread 0x71c3356006c0 (LWP 1622)):
#0  0x000071c355e98d71 in __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x71c3427350d4) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x71c3427350d4) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x71c3427350d4, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x000071c355e9b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x71c342735078, cond=0x71c3427350a8) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x71c3427350a8, mutex=0x71c342735078) at ./nptl/pthread_cond_wait.c:627
#5  0x000071c351f5040d in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#6  0x000071c351f2ed0b in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#7  0x000071c351f5033c in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#8  0x000071c355e9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x000071c355f29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 10 (Thread 0x71c334c006c0 (LWP 1657)):
#0  0x000071c355f1b4cd in __GI___poll (fds=0x71c338007b70, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x000071c35557366e in g_main_context_poll_unlocked (priority=2147483647, n_fds=1, fds=0x71c338007b70, timeout=<optimized out>, context=0x71c2fc000c60) at ../../../glib/gmain.c:4521
#2  g_main_context_iterate_unlocked.isra.0 (context=context@entry=0x71c2fc000c60, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4212
#3  0x000071c355513a53 in g_main_context_iteration (context=0x71c2fc000c60, may_block=1) at ../../../glib/gmain.c:4282
#4  0x000071c35686e6ef in QEventDispatcherGlib::processEvents (this=0x71c2fc000b70, flags=...) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#5  0x000071c356ab14d3 in QEventLoop::exec (this=0x71c334bff7d0, flags=...) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/global/qflags.h:34
#6  0x000071c3569c8df7 in QThread::exec (this=<optimized out>) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/global/qflags.h:74
#7  0x000071c356986915 in operator() (__closure=<optimized out>) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/thread/qthread_unix.cpp:375
#8  (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=<optimized out>) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/thread/qthread_unix.cpp:311
#9  QThreadPrivate::start (arg=0x5f1af3f4a030) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/thread/qthread_unix.cpp:339
#10 0x000071c355e9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#11 0x000071c355f29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 9 (Thread 0x71c3430006c0 (LWP 1600)):
#0  0x000071c355e98d71 in __futex_abstimed_wait_common64 (private=24346, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5f1af389e7e8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=24346, abstime=0x0, clockid=0, expected=0, futex_word=0x5f1af389e7e8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5f1af389e7e8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x000071c355e9b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5f1af389e790, cond=0x5f1af389e7c0) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x5f1af389e7c0, mutex=0x5f1af389e790) at ./nptl/pthread_cond_wait.c:627
#5  0x000071c351f5040d in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#6  0x000071c351f2ed0b in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#7  0x000071c351f5033c in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#8  0x000071c355e9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x000071c355f29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 8 (Thread 0x71c3448006c0 (LWP 1565)):
#0  0x000071c355f1b4cd in __GI___poll (fds=0x5f1af36d8810, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x000071c35557366e in g_main_context_poll_unlocked (priority=2147483647, n_fds=2, fds=0x5f1af36d8810, timeout=<optimized out>, context=0x71c33c000c80) at ../../../glib/gmain.c:4521
#2  g_main_context_iterate_unlocked.isra.0 (context=context@entry=0x71c33c000c80, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4212
#3  0x000071c355513a53 in g_main_context_iteration (context=0x71c33c000c80, may_block=1) at ../../../glib/gmain.c:4282
#4  0x000071c35686e6ef in QEventDispatcherGlib::processEvents (this=0x71c33c000b70, flags=...) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#5  0x000071c356ab14d3 in QEventLoop::exec (this=0x71c3447ff780, flags=...) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/global/qflags.h:34
#6  0x000071c3569c8df7 in QThread::exec (this=this@entry=0x71c357f4c720 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/global/qflags.h:74
#7  0x000071c357f2f02d in QDBusConnectionManager::run (this=0x71c357f4c720 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/dbus/qdbusconnectionmanager.cpp:144
#8  0x000071c356986915 in operator() (__closure=<optimized out>) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/thread/qthread_unix.cpp:375
#9  (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=<optimized out>) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/thread/qthread_unix.cpp:311
#10 QThreadPrivate::start (arg=0x71c357f4c720 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/thread/qthread_unix.cpp:339
#11 0x000071c355e9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#12 0x000071c355f29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 7 (Thread 0x71c3360006c0 (LWP 1621)):
#0  0x000071c355e98d71 in __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5f1af39f08a0) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x5f1af39f08a0) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5f1af39f08a0, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x000071c355e9b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5f1af39f0848, cond=0x5f1af39f0878) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x5f1af39f0878, mutex=0x5f1af39f0848) at ./nptl/pthread_cond_wait.c:627
#5  0x000071c351f5040d in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#6  0x000071c351f2ed0b in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#7  0x000071c351f5033c in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#8  0x000071c355e9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x000071c355f29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 6 (Thread 0x71c329e006c0 (LWP 1678)):
#0  0x000071c355e98d71 in __futex_abstimed_wait_common64 (private=29123, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x71c3401cb604) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=29123, abstime=0x0, clockid=0, expected=0, futex_word=0x71c3401cb604) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x71c3401cb604, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x000071c355e9b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x71c3401cb5a8, cond=0x71c3401cb5d8) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x71c3401cb5d8, mutex=0x71c3401cb5a8) at ./nptl/pthread_cond_wait.c:627
#5  0x000071c351f5040d in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#6  0x000071c351f2ed0b in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#7  0x000071c351f5033c in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#8  0x000071c355e9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x000071c355f29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 5 (Thread 0x71c3374006c0 (LWP 1608)):
#0  0x000071c355e98d71 in __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5f1af397b2b8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x5f1af397b2b8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5f1af397b2b8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x000071c355e9b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5f1af397b260, cond=0x5f1af397b290) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x5f1af397b290, mutex=0x5f1af397b260) at ./nptl/pthread_cond_wait.c:627
#5  0x000071c351f5040d in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#6  0x000071c351f2ed0b in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#7  0x000071c351f5033c in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#8  0x000071c355e9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x000071c355f29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 4 (Thread 0x71c343e006c0 (LWP 1566)):
#0  0x000071c355f1b4cd in __GI___poll (fds=0x71c343dff6c8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x000071c359c168ca in ??? () at /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x000071c359c1828c in xcb_wait_for_event () at /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x000071c345271996 in QXcbEventQueue::run (this=0x5f1af3779380) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/plugins/platforms/xcb/qxcbeventqueue.cpp:192
#4  0x000071c356986915 in operator() (__closure=<optimized out>) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/thread/qthread_unix.cpp:375
#5  (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=<optimized out>) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/thread/qthread_unix.cpp:311
#6  QThreadPrivate::start (arg=0x5f1af3779380) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/thread/qthread_unix.cpp:339
#7  0x000071c355e9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#8  0x000071c355f29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 3 (Thread 0x71c336a006c0 (LWP 1620)):
#0  0x000071c355e98d71 in __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5f1af3a6ebb8) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=0, abstime=0x0, clockid=0, expected=0, futex_word=0x5f1af3a6ebb8) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5f1af3a6ebb8, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x000071c355e9b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5f1af3a6eb60, cond=0x5f1af3a6eb90) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x5f1af3a6eb90, mutex=0x5f1af3a6eb60) at ./nptl/pthread_cond_wait.c:627
#5  0x000071c351f5040d in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#6  0x000071c351f2ed0b in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#7  0x000071c351f5033c in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#8  0x000071c355e9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x000071c355f29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 2 (Thread 0x71c3412006c0 (LWP 1606)):
#0  0x000071c355e98d71 in __futex_abstimed_wait_common64 (private=24346, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5f1af389f830) at ./nptl/futex-internal.c:57
#1  __futex_abstimed_wait_common (cancel=true, private=24346, abstime=0x0, clockid=0, expected=0, futex_word=0x5f1af389f830) at ./nptl/futex-internal.c:87
#2  __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5f1af389f830, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at ./nptl/futex-internal.c:139
#3  0x000071c355e9b7ed in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5f1af389f7d8, cond=0x5f1af389f808) at ./nptl/pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x5f1af389f808, mutex=0x5f1af389f7d8) at ./nptl/pthread_cond_wait.c:627
#5  0x000071c351f5040d in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#6  0x000071c351f2ed0b in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#7  0x000071c351f5033c in ??? () at /lib/x86_64-linux-gnu/libgallium-24.2.8-1ubuntu1~24.04.1.so
#8  0x000071c355e9caa4 in start_thread (arg=<optimized out>) at ./nptl/pthread_create.c:447
#9  0x000071c355f29c3c in clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 1 (Thread 0x71c3452dcd80 (LWP 1543)):
[KCrash Handler]
#6  0x000071c3594262b0 in KWin::OutputLayer::addRepaint (this=0x5f1af3be4c20, region=<optimized out>) at /usr/src/kwin-4:6.3.0-0zneon+24.04+noble+release+build27/src/core/outputlayer.cpp:53
#7  0x000071c359426943 in KWin::RenderLayer::setGeometry (geometry=..., this=0x5f1af4742c00) at /usr/src/kwin-4:6.3.0-0zneon+24.04+noble+release+build27/src/core/renderlayer.cpp:125
#8  KWin::RenderLayer::setGeometry (this=0x5f1af4742c00, geometry=...) at /usr/src/kwin-4:6.3.0-0zneon+24.04+noble+release+build27/src/core/renderlayer.cpp:119
#9  0x000071c35965e599 in operator() (__closure=<optimized out>) at /usr/src/kwin-4:6.3.0-0zneon+24.04+noble+release+build27/src/compositor_x11.cpp:351
#10 operator() (__closure=<optimized out>) at /usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs_impl.h:141
#11 QtPrivate::FunctorCallBase::call_internal<void, QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, KWin::X11Compositor::start()::<lambda()> >::call(KWin::X11Compositor::start()::<lambda()>&, void**)::<lambda()> > (fn=<optimized out>, args=<optimized out>) at /usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs_impl.h:65
#12 QtPrivate::FunctorCall<QtPrivate::IndexesList<>, QtPrivate::List<>, void, KWin::X11Compositor::start()::<lambda()> >::call (arg=<optimized out>, f=<optimized out>) at /usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs_impl.h:140
#13 QtPrivate::FunctorCallable<KWin::X11Compositor::start()::<lambda()> >::call<QtPrivate::List<>, void> (arg=<optimized out>, f=<optimized out>) at /usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs_impl.h:362
#14 QtPrivate::QCallableObject<KWin::X11Compositor::start()::<lambda()>, QtPrivate::List<>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=<optimized out>, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/x86_64-linux-gnu/qt6/QtCore/qobjectdefs_impl.h:572
#15 0x000071c356a763e9 in QtPrivate::QSlotObjectBase::call (a=0x7ffcf2235848, r=<optimized out>, this=0x5f1af3d3a220, this=<optimized out>, r=<optimized out>, a=<optimized out>) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/kernel/qobjectdefs_impl.h:486
#16 doActivate<false> (sender=0x5f1af37dbbf0, signal_index=4, argv=0x7ffcf2235848) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/kernel/qobject.cpp:4115
#17 0x000071c35964095e in KWin::Workspace::desktopResized (this=0x5f1af37dbbf0) at /usr/src/kwin-4:6.3.0-0zneon+24.04+noble+release+build27/src/workspace.cpp:2247
#18 0x000071c35962d084 in KWin::Workspace::updateOutputs (this=this@entry=0x5f1af37dbbf0, outputOrder=std::optional [no contained value]) at /usr/src/kwin-4:6.3.0-0zneon+24.04+noble+release+build27/src/workspace.cpp:1347
#19 0x000071c35962dd2f in KWin::Workspace::slotOutputBackendOutputsQueried (this=0x5f1af37dbbf0) at /usr/src/kwin-4:6.3.0-0zneon+24.04+noble+release+build27/src/workspace.cpp:1230
#20 0x000071c356a763e9 in QtPrivate::QSlotObjectBase::call (a=0x7ffcf2235fd8, r=<optimized out>, this=0x5f1af3c75a70, this=<optimized out>, r=<optimized out>, a=<optimized out>) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/kernel/qobjectdefs_impl.h:486
#21 doActivate<false> (sender=0x5f1af3b345b0, signal_index=3, argv=0x7ffcf2235fd8) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/kernel/qobject.cpp:4115
#22 0x00005f1ada51f2c9 in KWin::X11StandaloneBackend::doUpdateOutputs<KWin::Xcb::RandR::CurrentResources> (this=this@entry=0x5f1af3b345b0) at /usr/src/kwin-4:6.3.0-0zneon+24.04+noble+release+build27/src/backends/x11/standalone/x11_standalone_backend.cpp:440
#23 0x00005f1ada5206a5 in KWin::X11StandaloneBackend::updateOutputs (this=0x5f1af3b345b0) at /usr/src/kwin-4:6.3.0-0zneon+24.04+noble+release+build27/src/backends/x11/standalone/x11_standalone_backend.cpp:278
#24 0x000071c356a763e9 in QtPrivate::QSlotObjectBase::call (a=0x7ffcf2236a90, r=<optimized out>, this=0x5f1af3ac2770, this=<optimized out>, r=<optimized out>, a=<optimized out>) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/kernel/qobjectdefs_impl.h:486
#25 doActivate<false> (sender=0x5f1af3b37f20, signal_index=3, argv=0x7ffcf2236a90) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/kernel/qobject.cpp:4115
#26 0x000071c356a2025d in QTimer::timeout (this=<optimized out>, _t1=...) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/obj-x86_64-linux-gnu/src/corelib/Core_autogen/include/moc_qtimer.cpp:223
#27 0x000071c356a03806 in QObject::event (this=0x5f1af3b37f20, e=0x7ffcf2236c20) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/kernel/qobject.cpp:1393
#28 0x000071c357c01158 in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x5f1af3b37f20, e=0x7ffcf2236c20) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/widgets/kernel/qapplication.cpp:3296
#29 0x000071c356aaefa0 in QCoreApplication::notifyInternal2 (receiver=0x5f1af3b37f20, event=0x7ffcf2236c20) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/kernel/qcoreapplication.cpp:1172
#30 0x000071c356985f58 in QTimerInfoList::activateTimers (this=0x5f1af37eea50) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/kernel/qtimerinfo_unix.cpp:426
#31 0x000071c3568679c9 in timerSourceDispatch (source=source@entry=0x5f1af37ee9f0) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/kernel/qeventdispatcher_glib.cpp:152
#32 0x000071c3555145b5 in g_main_dispatch (context=0x71c33c000f00) at ../../../glib/gmain.c:3344
#33 0x000071c355573717 in g_main_context_dispatch_unlocked (context=0x71c33c000f00) at ../../../glib/gmain.c:4152
#34 g_main_context_iterate_unlocked.isra.0 (context=context@entry=0x71c33c000f00, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4217
#35 0x000071c355513a53 in g_main_context_iteration (context=0x71c33c000f00, may_block=1) at ../../../glib/gmain.c:4282
#36 0x000071c35686e6ef in QEventDispatcherGlib::processEvents (this=0x5f1af37ff220, flags=...) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#37 0x000071c356ab14d3 in QEventLoop::exec (this=this@entry=0x7ffcf2236e90, flags=..., flags@entry=...) at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/global/qflags.h:34
#38 0x000071c356ab2ffd in QCoreApplication::exec () at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/corelib/global/qflags.h:74
#39 0x000071c356ed775d in QGuiApplication::exec () at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/gui/kernel/qguiapplication.cpp:1975
#40 0x000071c357bfa219 in QApplication::exec () at /usr/src/qt6-base-6.8.2-0zneon+24.04+noble+release+build42/src/widgets/kernel/qapplication.cpp:2564
#41 0x00005f1ada513717 in main (argc=<optimized out>, argv=0x7ffcf2237248) at /usr/src/kwin-4:6.3.0-0zneon+24.04+noble+release+build27/src/main_x11.cpp:467

Reported using DrKonqi