Bug 512777

Summary:	kwin keeps crashing in gm200_validate_sample_locations() in Nouveau graphics drivers
Product:	[Plasma] kwin	Reporter:	denton.christopher
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED UPSTREAM
Severity:	crash	CC:	bkjoh, kde, kdedev, nate, ngompa
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	6.4.5
Target Milestone:	---
Platform:	Fedora RPMs
OS:	Linux
See Also:	https://bugzilla.redhat.com/show_bug.cgi?id=2419367
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:	https://crash-reports.kde.org/organizations/kde/issues/258976/events/72839acdb03c42bcb7076cc8ef898930/

Description denton.christopher 2025-11-30 01:53:07 UTC

Application: kwin_wayland (6.4.5)

ApplicationNotResponding [ANR]: false
Qt Version: 6.9.2
Frameworks Version: 6.18.0
Operating System: Linux 6.17.1-300.fc43.x86_64 x86_64
Windowing System: Wayland
Distribution: "Fedora Linux 43 (KDE Plasma Desktop Edition)"
DrKonqi: 6.4.5 [CoredumpBackend]

-- Information about the crash:
Occurs over and over.  Now I have a black screen with no kde desktop

The crash can be reproduced every time.

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

Downloading 39.69 M separate debug info for /usr/bin/kwin_wayland...

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

warning: Can't open file /memfd:wayland-cursor (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:unknown-usage:QtQml (deleted) during file-backed mapping note processing
[New LWP 18189]
[New LWP 18211]
[New LWP 18198]
[New LWP 18421]
[New LWP 18234]
[New LWP 18418]
[New LWP 18419]
[New LWP 18209]
[New LWP 18420]
[New LWP 18235]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib64/libthread_db.so.1".
Core was generated by `/usr/bin/kwin_wayland --wayland-fd 7 --socket wayland-0 --xwayland-fd 8 --xwayland-fd 9 --xwayland-display :0 --xwayland-xauthority /run/user/1000/xauth_dBkOOL --xwayland'.
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 0x7f290732a300 (LWP 18189))]
Cannot QML trace cores :(
add symbol table from file "/lib64/libc.so.6"
add symbol table from file "/lib64/libKF6Crash.so.6"
Downloading 210.13 M separate debug info for /lib64/libgallium-25.2.4.so...
add symbol table from file "/lib64/libgallium-25.2.4.so"
Downloading 193.40 M separate debug info for /lib64/libkwin.so.6...
add symbol table from file "/lib64/libkwin.so.6"
add symbol table from file "/usr/bin/kwin_wayland"
Downloading 86.39 M separate debug info for /lib64/libQt6Core.so.6...
add symbol table from file "/lib64/libQt6Core.so.6"
Downloading 115.40 M separate debug info for /lib64/libQt6Widgets.so.6...
add symbol table from file "/lib64/libQt6Widgets.so.6"
Downloading 171.24 M separate debug info for /lib64/libQt6Gui.so.6...
add symbol table from file "/lib64/libQt6Gui.so.6"
Downloading source file /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/main_wayland.cpp...
Downloading source file /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/widgets/kernel/qapplication.cpp...
Downloading 171.39 K source file /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/gui/kernel/qguiapplication.cpp...
Downloading source file /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/kernel/qcoreapplication.cpp...
Downloading 13.16 K source file /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/global/qflags.h...
Downloading source file /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/gui/platform/unix/qunixeventdispatcher.cpp...
Downloading source file /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/kernel/qeventdispatcher_unix.cpp...
Downloading source file /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/kernel/qtimerinfo_unix.cpp...
Downloading 202.77 K source file /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/kernel/qobject.cpp...
Downloading source file /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/redhat-linux-build/src/corelib/Core_autogen/include/moc_qtimer.cpp...
Downloading 28.08 K source file /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/kernel/qobjectdefs.h...
Downloading 28.70 K source file /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/kernel/qobjectdefs_impl.h...
Downloading source file /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/redhat-linux-build/src/kwin_autogen/include/moc_renderloop.cpp...
Downloading source file /usr/include/qt6/QtCore/qobjectdefs.h...
Downloading source file /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/compositor.cpp...
Downloading source file /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/scene/scene.cpp...
Downloading 18.35 K source file /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/scene/workspacescene.cpp...
Downloading source file /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/effect/effecthandler.cpp...
Downloading 16.07 K source file /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/plugins/slidingpopups/slidingpopups.cpp...
Downloading 35.30 K source file /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/effect/animationeffect.cpp...
Downloading 31.41 K source file /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/plugins/blur/blur.cpp...
Downloading 10.47 K source file /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/opengl/glframebuffer.cpp...
Downloading 35.26 K source file /usr/src/debug/mesa-25.2.4-2.fc43.x86_64/redhat-linux-build/../src/mesa/main/blit.c...
Downloading 60.16 K source file /usr/src/debug/mesa-25.2.4-2.fc43.x86_64/redhat-linux-build/../src/gallium/drivers/nouveau/nvc0/nvc0_surface.c...
Downloading source file /usr/src/debug/mesa-25.2.4-2.fc43.x86_64/redhat-linux-build/../src/gallium/drivers/nouveau/nvc0/nvc0_state_validate.c...
Downloading 2.48 K source file /usr/src/debug/glibc-2.42-4.fc43.x86_64/misc/../sysdeps/unix/sysv/linux/x86_64/clone3.S...
Downloading source file /usr/src/debug/glibc-2.42-4.fc43.x86_64/nptl/pthread_create.c...
Downloading source file /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthread_unix.cpp...
Downloading source file /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthreadpool.cpp...
Downloading source file /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qwaitcondition_unix.cpp...
Downloading source file /usr/src/debug/glibc-2.42-4.fc43.x86_64/nptl/pthread_cond_wait.c...
Downloading 7.09 K source file /usr/src/debug/glibc-2.42-4.fc43.x86_64/nptl/futex-internal.c...
Downloading source file /usr/src/debug/glibc-2.42-4.fc43.x86_64/nptl/cancellation.c...
Downloading source file /usr/src/debug/glibc-2.42-4.fc43.x86_64/nptl/../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S...
Downloading 7.06 K source file /usr/src/debug/mesa-25.2.4-2.fc43.x86_64/redhat-linux-build/../src/c11/impl/threads_posix.c...
Downloading source file /usr/src/debug/mesa-25.2.4-2.fc43.x86_64/redhat-linux-build/../src/util/u_queue.c...
[Current thread is 1 (Thread 0x7f290732a300 (LWP 18189))]

Thread 10 (Thread 0x7f28e5b786c0 (LWP 18235)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007f290d07ac3c in __internal_syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=<optimized out>, a6=<optimized out>, nr=202) at cancellation.c:49
#2  0x00007f290d07b2ac in __futex_abstimed_wait_common64 (private=<optimized out>, futex_word=<optimized out>, expected=<optimized out>, op=<optimized out>, abstime=<optimized out>, cancel=<optimized out>) at futex-internal.c:57
#3  __futex_abstimed_wait_common (futex_word=<optimized out>, expected=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, private=<optimized out>, cancel=<optimized out>) at futex-internal.c:87
#4  0x00007f290d07db88 in __pthread_cond_wait_common (cond=0x55e1ab0c5ff8, mutex=0x55e1ab0c5fd0, clockid=<optimized out>, abstime=0x7f28e5b776d0) at pthread_cond_wait.c:421
#5  ___pthread_cond_timedwait64 (cond=0x55e1ab0c5ff8, mutex=0x55e1ab0c5fd0, abstime=0x7f28e5b776d0) at pthread_cond_wait.c:478
#6  0x00007f290d8d4fa6 in QWaitConditionPrivate::wait_relative (this=<optimized out>, deadline=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qwaitcondition_unix.cpp:57
#7  QWaitConditionPrivate::wait (this=0x55e1ab0c5fd0, deadline=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qwaitcondition_unix.cpp:65
#8  QWaitCondition::wait (this=this@entry=0x55e1ab0c5f40, mutex=mutex@entry=0x55e1ab087268, deadline=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qwaitcondition_unix.cpp:145
#9  0x00007f290d8d1b77 in QThreadPoolThread::run (this=0x55e1ab0c5f30) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthreadpool.cpp:119
#10 0x00007f290d8c70e6 in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthread_unix.cpp:434
#11 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthread_unix.cpp:366
#12 QThreadPrivate::start (arg=0x55e1ab0c5f30) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthread_unix.cpp:394
#13 0x00007f290d07e464 in start_thread (arg=<optimized out>) at pthread_create.c:448
#14 0x00007f290d1015ac in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 9 (Thread 0x7f28c3fff6c0 (LWP 18420)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007f290d07ac3c in __internal_syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=<optimized out>, a6=<optimized out>, nr=202) at cancellation.c:49
#2  0x00007f290d07b2ac in __futex_abstimed_wait_common64 (private=<optimized out>, futex_word=<optimized out>, expected=<optimized out>, op=<optimized out>, abstime=<optimized out>, cancel=<optimized out>) at futex-internal.c:57
#3  __futex_abstimed_wait_common (futex_word=<optimized out>, expected=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, private=<optimized out>, cancel=<optimized out>) at futex-internal.c:87
#4  0x00007f290d07db88 in __pthread_cond_wait_common (cond=0x55e1ab08e868, mutex=0x55e1ab08e840, clockid=<optimized out>, abstime=0x7f28c3ffe6d0) at pthread_cond_wait.c:421
#5  ___pthread_cond_timedwait64 (cond=0x55e1ab08e868, mutex=0x55e1ab08e840, abstime=0x7f28c3ffe6d0) at pthread_cond_wait.c:478
#6  0x00007f290d8d4fa6 in QWaitConditionPrivate::wait_relative (this=<optimized out>, deadline=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qwaitcondition_unix.cpp:57
#7  QWaitConditionPrivate::wait (this=0x55e1ab08e840, deadline=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qwaitcondition_unix.cpp:65
#8  QWaitCondition::wait (this=this@entry=0x55e1ab24a990, mutex=mutex@entry=0x55e1aaef8ca8, deadline=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qwaitcondition_unix.cpp:145
#9  0x00007f290d8d1b77 in QThreadPoolThread::run (this=0x55e1ab24a980) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthreadpool.cpp:119
#10 0x00007f290d8c70e6 in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthread_unix.cpp:434
#11 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthread_unix.cpp:366
#12 QThreadPrivate::start (arg=0x55e1ab24a980) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthread_unix.cpp:394
#13 0x00007f290d07e464 in start_thread (arg=<optimized out>) at pthread_create.c:448
#14 0x00007f290d1015ac in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 8 (Thread 0x7f28e83ff6c0 (LWP 18209)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007f290d07ac3c in __internal_syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=<optimized out>, a6=<optimized out>, nr=202) at cancellation.c:49
#2  0x00007f290d07b2ac in __futex_abstimed_wait_common64 (private=<optimized out>, futex_word=<optimized out>, expected=<optimized out>, op=<optimized out>, abstime=<optimized out>, cancel=<optimized out>) at futex-internal.c:57
#3  __futex_abstimed_wait_common (futex_word=<optimized out>, expected=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, private=<optimized out>, cancel=<optimized out>) at futex-internal.c:87
#4  0x00007f290d07d97e in __pthread_cond_wait_common (cond=0x55e1aa1be990, mutex=0x55e1aa1be960, clockid=0, abstime=0x0) at pthread_cond_wait.c:421
#5  ___pthread_cond_wait (cond=0x55e1aa1be990, mutex=0x55e1aa1be960) at pthread_cond_wait.c:453
#6  0x00007f28f134badd in cnd_wait (cond=<optimized out>, mtx=<optimized out>) at ../src/c11/impl/threads_posix.c:111
#7  0x00007f28f13050fc in util_queue_thread_func (input=input@entry=0x55e1aa1bbff0) at ../src/util/u_queue.c:275
#8  0x00007f28f134ba0c in impl_thrd_routine (p=<optimized out>) at ../src/c11/impl/threads_posix.c:43
#9  0x00007f290d07e464 in start_thread (arg=<optimized out>) at pthread_create.c:448
#10 0x00007f290d1015ac in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 7 (Thread 0x7f28ca71c6c0 (LWP 18419)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007f290d07ac3c in __internal_syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=<optimized out>, a6=<optimized out>, nr=202) at cancellation.c:49
#2  0x00007f290d07b2ac in __futex_abstimed_wait_common64 (private=<optimized out>, futex_word=<optimized out>, expected=<optimized out>, op=<optimized out>, abstime=<optimized out>, cancel=<optimized out>) at futex-internal.c:57
#3  __futex_abstimed_wait_common (futex_word=<optimized out>, expected=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, private=<optimized out>, cancel=<optimized out>) at futex-internal.c:87
#4  0x00007f290d07db88 in __pthread_cond_wait_common (cond=0x55e1ab24a908, mutex=0x55e1ab24a8e0, clockid=<optimized out>, abstime=0x7f28ca71b6d0) at pthread_cond_wait.c:421
#5  ___pthread_cond_timedwait64 (cond=0x55e1ab24a908, mutex=0x55e1ab24a8e0, abstime=0x7f28ca71b6d0) at pthread_cond_wait.c:478
#6  0x00007f290d8d4fa6 in QWaitConditionPrivate::wait_relative (this=<optimized out>, deadline=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qwaitcondition_unix.cpp:57
#7  QWaitConditionPrivate::wait (this=0x55e1ab24a8e0, deadline=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qwaitcondition_unix.cpp:65
#8  QWaitCondition::wait (this=this@entry=0x55e1ab7b75b0, mutex=mutex@entry=0x55e1aaef8ca8, deadline=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qwaitcondition_unix.cpp:145
#9  0x00007f290d8d1b77 in QThreadPoolThread::run (this=0x55e1ab7b75a0) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthreadpool.cpp:119
#10 0x00007f290d8c70e6 in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthread_unix.cpp:434
#11 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthread_unix.cpp:366
#12 QThreadPrivate::start (arg=0x55e1ab7b75a0) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthread_unix.cpp:394
#13 0x00007f290d07e464 in start_thread (arg=<optimized out>) at pthread_create.c:448
#14 0x00007f290d1015ac in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 6 (Thread 0x7f28caf1d6c0 (LWP 18418)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007f290d07ac3c in __internal_syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=<optimized out>, a6=<optimized out>, nr=202) at cancellation.c:49
#2  0x00007f290d07b2ac in __futex_abstimed_wait_common64 (private=<optimized out>, futex_word=<optimized out>, expected=<optimized out>, op=<optimized out>, abstime=<optimized out>, cancel=<optimized out>) at futex-internal.c:57
#3  __futex_abstimed_wait_common (futex_word=<optimized out>, expected=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, private=<optimized out>, cancel=<optimized out>) at futex-internal.c:87
#4  0x00007f290d07db88 in __pthread_cond_wait_common (cond=0x55e1ab7b7488, mutex=0x55e1ab7b7460, clockid=<optimized out>, abstime=0x7f28caf1c6d0) at pthread_cond_wait.c:421
#5  ___pthread_cond_timedwait64 (cond=0x55e1ab7b7488, mutex=0x55e1ab7b7460, abstime=0x7f28caf1c6d0) at pthread_cond_wait.c:478
#6  0x00007f290d8d4fa6 in QWaitConditionPrivate::wait_relative (this=<optimized out>, deadline=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qwaitcondition_unix.cpp:57
#7  QWaitConditionPrivate::wait (this=0x55e1ab7b7460, deadline=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qwaitcondition_unix.cpp:65
#8  QWaitCondition::wait (this=this@entry=0x55e1aa06efe0, mutex=mutex@entry=0x55e1aaef8ca8, deadline=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qwaitcondition_unix.cpp:145
#9  0x00007f290d8d1b77 in QThreadPoolThread::run (this=0x55e1aa06efd0) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthreadpool.cpp:119
#10 0x00007f290d8c70e6 in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthread_unix.cpp:434
#11 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthread_unix.cpp:366
#12 QThreadPrivate::start (arg=0x55e1aa06efd0) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthread_unix.cpp:394
#13 0x00007f290d07e464 in start_thread (arg=<optimized out>) at pthread_create.c:448
#14 0x00007f290d1015ac in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 5 (Thread 0x7f28e72bc6c0 (LWP 18234)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007f290d07ac3c in __internal_syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=<optimized out>, a6=<optimized out>, nr=271) at cancellation.c:49
#2  0x00007f290d07ac84 in __syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=<optimized out>, a6=<optimized out>, nr=271) at cancellation.c:75
#3  0x00007f290d0f46c6 in __GI_ppoll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>, sigmask=<optimized out>) at ../sysdeps/unix/sysv/linux/ppoll.c:42
#4  0x00007f290c36a2a0 in ?? () from /lib64/libglib-2.0.so.0
#5  0x000003bab7fa094b in ?? ()
#6  0x00007f28e72bb620 in ?? ()
#7  0x0000000100000001 in ?? ()
#8  0x00007f28e72bb618 in ?? ()
#9  0x7fffffff00000000 in ?? ()
#10 0xffffffffffffffff in ?? ()
#11 0x0000000000001004 in internal_utf8_loop_single (step=0x7f28dc000cd0, step_data=0x7fffffff, inptrp=0x100000001, inend=0x7f28dc000cd0 "", outptrp=<synthetic pointer>, outend=0x0, irreversible=0x3ba9b0b2800) at ../iconv/loop.c:311
#12 __gconv_transform_internal_utf8 (step=0x7f28dc000cd0, data=0x7fffffff, inptrp=0x100000001, inend=0x7f28dc000cd0 "", outbufstart=0x8, irreversible=0x0, do_flush=-603976704, consume_incomplete=1) at ../iconv/skeleton.c:471
#13 0x00007f290c36a363 in ?? () from /lib64/libglib-2.0.so.0
#14 0x00007f28dc000c00 in ?? ()
#15 0x0000000000000001 in ?? ()
#16 0x00007f28e72bb6d0 in ?? ()
#17 0x00007f290da1126d in QEventDispatcherGlib::processEvents (this=0x7f28dc000be0, flags=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/kernel/qeventdispatcher_glib.cpp:399
Backtrace stopped: frame did not save the PC

Thread 4 (Thread 0x7f28c9f1b6c0 (LWP 18421)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007f290d07ac3c in __internal_syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=<optimized out>, a6=<optimized out>, nr=202) at cancellation.c:49
#2  0x00007f290d07b2ac in __futex_abstimed_wait_common64 (private=<optimized out>, futex_word=<optimized out>, expected=<optimized out>, op=<optimized out>, abstime=<optimized out>, cancel=<optimized out>) at futex-internal.c:57
#3  __futex_abstimed_wait_common (futex_word=<optimized out>, expected=<optimized out>, clockid=<optimized out>, abstime=<optimized out>, private=<optimized out>, cancel=<optimized out>) at futex-internal.c:87
#4  0x00007f290d07db88 in __pthread_cond_wait_common (cond=0x55e1ab6f61b8, mutex=0x55e1ab6f6190, clockid=<optimized out>, abstime=0x7f28c9f1a6d0) at pthread_cond_wait.c:421
#5  ___pthread_cond_timedwait64 (cond=0x55e1ab6f61b8, mutex=0x55e1ab6f6190, abstime=0x7f28c9f1a6d0) at pthread_cond_wait.c:478
#6  0x00007f290d8d4fa6 in QWaitConditionPrivate::wait_relative (this=<optimized out>, deadline=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qwaitcondition_unix.cpp:57
#7  QWaitConditionPrivate::wait (this=0x55e1ab6f6190, deadline=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qwaitcondition_unix.cpp:65
#8  QWaitCondition::wait (this=this@entry=0x55e1ab08e8f0, mutex=mutex@entry=0x55e1aaef8ca8, deadline=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qwaitcondition_unix.cpp:145
#9  0x00007f290d8d1b77 in QThreadPoolThread::run (this=0x55e1ab08e8e0) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthreadpool.cpp:119
#10 0x00007f290d8c70e6 in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthread_unix.cpp:434
#11 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthread_unix.cpp:366
#12 QThreadPrivate::start (arg=0x55e1ab08e8e0) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/thread/qthread_unix.cpp:394
#13 0x00007f290d07e464 in start_thread (arg=<optimized out>) at pthread_create.c:448
#14 0x00007f290d1015ac in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 3 (Thread 0x7f28f93ff6c0 (LWP 18198)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007f290d07ac3c in __internal_syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=<optimized out>, a6=<optimized out>, nr=271) at cancellation.c:49
#2  0x00007f290d07ac84 in __syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=<optimized out>, a6=<optimized out>, nr=271) at cancellation.c:75
#3  0x00007f290d0f46c6 in __GI_ppoll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>, sigmask=<optimized out>) at ../sysdeps/unix/sysv/linux/ppoll.c:42
#4  0x00007f290c36a2a0 in ?? () from /lib64/libglib-2.0.so.0
#5  0x000003bcc49a9319 in ?? ()
#6  0x00007f28f93fe5d0 in ?? ()
#7  0x0000000100000001 in ?? ()
#8  0x00007f28f93fe5c8 in ?? ()
#9  0x7fffffff00000000 in ?? ()
#10 0xffffffffffffffff in ?? ()
#11 0x000000000000100d in __gconv_transform_internal_utf8 (step=0x7f28f4000cf0, data=0x3, inptrp=0x0, inend=0x7f290d086982 <__syscall_cancel_arch+50> "\303f.\017\037\204", outbufstart=0x8, irreversible=0x0, do_flush=-201323520, consume_incomplete=1) at ../iconv/skeleton.c:350
#12 0x00007f290c36a363 in ?? () from /lib64/libglib-2.0.so.0
#13 0x00007f28f4000c00 in ?? ()
#14 0x0000000000000001 in ?? ()
#15 0x00007f28f93fe680 in ?? ()
#16 0x00007f290da1126d in QEventDispatcherGlib::processEvents (this=0x7f28f4000be0, flags=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/kernel/qeventdispatcher_glib.cpp:399
Backtrace stopped: frame did not save the PC

Thread 2 (Thread 0x7f28e7bfe6c0 (LWP 18211)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007f290d07ac3c in __internal_syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=<optimized out>, a6=<optimized out>, nr=271) at cancellation.c:49
#2  0x00007f290d07ac84 in __syscall_cancel (a1=<optimized out>, a2=<optimized out>, a3=<optimized out>, a4=<optimized out>, a5=<optimized out>, a6=<optimized out>, nr=271) at cancellation.c:75
#3  0x00007f290d0f46c6 in __GI_ppoll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>, sigmask=<optimized out>) at ../sysdeps/unix/sysv/linux/ppoll.c:42
#4  0x00007f290c36a2a0 in ?? () from /lib64/libglib-2.0.so.0
#5  0x000003bcceabcd7f in ?? ()
#6  0x00007f28e7bfd620 in ?? ()
#7  0x0000000100000001 in ?? ()
#8  0x00007f28e7bfd618 in ?? ()
#9  0x7fffffff00000000 in ?? ()
#10 0xffffffffffffffff in ?? ()
#11 0x000000000000100d in __gconv_transform_internal_utf8 (step=0x7f28d8000cd0, data=0x2, inptrp=0x0, inend=0x7f290d086982 <__syscall_cancel_arch+50> "\303f.\017\037\204", outbufstart=0x8, irreversible=0x0, do_flush=-671085568, consume_incomplete=1) at ../iconv/skeleton.c:350
#12 0x00007f290c36a363 in ?? () from /lib64/libglib-2.0.so.0
#13 0x00007f28d8000c00 in ?? ()
#14 0x0000000000000001 in ?? ()
#15 0x00007f28e7bfd6d0 in ?? ()
#16 0x00007f290da1126d in QEventDispatcherGlib::processEvents (this=0x7f28d8000be0, flags=...) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/kernel/qeventdispatcher_glib.cpp:399
Backtrace stopped: frame did not save the PC

Thread 1 (Thread 0x7f290732a300 (LWP 18189)):
[KCrash Handler]
#4  0x00007f28f209068d in gm200_validate_sample_locations (nvc0=0x55e1aa445710, ms=2056) at ../src/gallium/drivers/nouveau/nvc0/nvc0_state_validate.c:75
#5  0x00007f28f20931c1 in nvc0_state_validate (nvc0=nvc0@entry=0x55e1aa445710, mask=<optimized out>, validate_list=validate_list@entry=0x7f28f3d1b420 <validate_list_3d>, size=size@entry=33, dirty=dirty@entry=0x55e1aa445ce8, bufctx=0x55e1aacb9f70) at ../src/gallium/drivers/nouveau/nvc0/nvc0_state_validate.c:913
#6  0x00007f28f209339f in nvc0_state_validate_3d (nvc0=0x55e1aa445710, mask=<optimized out>) at ../src/gallium/drivers/nouveau/nvc0/nvc0_state_validate.c:931
#7  0x00007f28f2014313 in nvc0_blit_3d (nvc0=nvc0@entry=0x55e1aa445710, info=info@entry=0x7ffe9d116f60) at ../src/gallium/drivers/nouveau/nvc0/nvc0_surface.c:1265
#8  0x00007f28f201786b in nvc0_blit (pipe=0x55e1aa445710, info=0x7ffe9d116f60) at ../src/gallium/drivers/nouveau/nvc0/nvc0_surface.c:1732
#9  0x00007f28f1175d70 in do_blit_framebuffer (ctx=ctx@entry=0x7f28e6971010, readFB=readFB@entry=0x55e1ab396bb0, drawFB=drawFB@entry=0x55e1ab9432b0, srcX0=srcX0@entry=3, srcY0=<optimized out>, srcY0@entry=1080, srcX1=srcX1@entry=1918, srcY1=<optimized out>, dstX0=<optimized out>, dstY0=<optimized out>, dstX1=1532, dstY1=44, mask=16384, filter=9729) at ../src/mesa/main/blit.c:579
#10 0x00007f28f1176745 in blit_framebuffer (ctx=0x7f28e6971010, readFb=0x55e1ab396bb0, drawFb=0x55e1ab9432b0, srcX0=3, srcY0=1080, srcX1=1918, srcY1=1045, dstX0=0, dstY0=16, dstX1=1532, dstY1=44, mask=16384, filter=9729, no_error=false, func=0x7f28f2b80ec9 "glBlitFramebuffer") at ../src/mesa/main/blit.c:861
#11 blit_framebuffer_err (func=0x7f28f2b80ec9 "glBlitFramebuffer", ctx=0x7f28e6971010, readFb=0x55e1ab396bb0, drawFb=0x55e1ab9432b0, srcX0=3, srcY0=1080, srcX1=1918, srcY1=1045, dstX0=0, dstY0=16, dstX1=1532, dstY1=44, mask=16384, filter=9729) at ../src/mesa/main/blit.c:879
#12 _mesa_BlitFramebuffer (srcX0=3, srcY0=1080, srcX1=1918, srcY1=1045, dstX0=0, dstY0=16, dstX1=1532, dstY1=44, mask=16384, filter=9729) at ../src/mesa/main/blit.c:920
#13 0x00007f291058fcac in KWin::GLFramebuffer::blitFromFramebuffer (this=0x7f28d8003ff0, source=..., destination=..., filter=<optimized out>, flipX=false, flipY=<optimized out>) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/opengl/glframebuffer.cpp:264
#14 KWin::GLFramebuffer::blitFromFramebuffer (this=0x7f28d8003ff0, source=..., destination=..., filter=<optimized out>, flipX=false, flipY=<optimized out>) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/opengl/glframebuffer.cpp:211
#15 0x00007f291058ffcc in KWin::GLFramebuffer::blitFromRenderTarget (this=0x7f28d8003ff0, sourceRenderTarget=..., sourceViewport=..., source=..., destination=...) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/opengl/glframebuffer.cpp:279
#16 0x000055e171ef5cf1 in KWin::BlurEffect::blur (this=0x55e1ab0cf140, renderTarget=..., viewport=..., w=<optimized out>, w@entry=0x55e1ab91a4b0, mask=mask@entry=4, region=..., data=...) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/plugins/blur/blur.cpp:633
#17 0x000055e171ef6d0b in KWin::BlurEffect::drawWindow (this=<optimized out>, renderTarget=..., viewport=..., w=0x55e1ab91a4b0, mask=4, region=..., data=...) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/plugins/blur/blur.cpp:497
#18 0x00007f29104e32d9 in KWin::EffectsHandler::drawWindow (this=0x55e1ab086cc0, renderTarget=..., viewport=..., w=<optimized out>, mask=<optimized out>, region=..., data=...) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/effect/effecthandler.cpp:420
#19 0x00007f29104d89f1 in KWin::AnimationEffect::paintWindow (this=this@entry=0x55e1ab3465a0, renderTarget=..., viewport=..., w=<optimized out>, w@entry=0x55e1ab91a4b0, mask=mask@entry=4, region=..., data=...) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/effect/animationeffect.cpp:629
#20 0x00007f29104e3219 in KWin::EffectsHandler::paintWindow (this=0x55e1ab086cc0, renderTarget=..., viewport=..., w=0x55e1ab91a4b0, mask=4, region=..., data=...) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/effect/effecthandler.cpp:391
#21 0x000055e171f50b65 in KWin::SlidingPopupsEffect::paintWindow (this=this@entry=0x55e1ab24c9c0, renderTarget=..., viewport=..., w=<optimized out>, w@entry=0x55e1ab91a4b0, mask=mask@entry=4, region=..., data=...) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/plugins/slidingpopups/slidingpopups.cpp:178
#22 0x00007f29104e3219 in KWin::EffectsHandler::paintWindow (this=0x55e1ab086cc0, renderTarget=..., viewport=..., w=0x55e1ab91a4b0, mask=4, region=..., data=...) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/effect/effecthandler.cpp:391
#23 0x00007f29104e3219 in KWin::EffectsHandler::paintWindow (this=0x55e1ab086cc0, renderTarget=..., viewport=..., w=0x55e1ab91a4b0, mask=4, region=..., data=...) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/effect/effecthandler.cpp:391
#24 0x00007f29104e3219 in KWin::EffectsHandler::paintWindow (this=0x55e1ab086cc0, renderTarget=..., viewport=..., w=0x55e1ab91a4b0, mask=4, region=..., data=...) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/effect/effecthandler.cpp:391
#25 0x00007f291062075f in KWin::WorkspaceScene::paintWindow (this=<optimized out>, renderTarget=..., viewport=..., item=0x55e1ab922660, mask=4, region=...) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/scene/workspacescene.cpp:498
#26 KWin::WorkspaceScene::paintWindow (this=this@entry=0x55e1ab072f10, renderTarget=..., viewport=..., item=0x55e1ab922660, mask=4, region=...) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/scene/workspacescene.cpp:491
#27 0x00007f2910620a66 in KWin::WorkspaceScene::paintSimpleScreen (this=0x55e1ab072f10, renderTarget=..., viewport=..., region=...) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/scene/workspacescene.cpp:471
#28 0x00007f29104e3162 in KWin::EffectsHandler::paintScreen (this=0x55e1ab086cc0, renderTarget=..., viewport=..., mask=<optimized out>, region=..., screen=<optimized out>) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/effect/effecthandler.cpp:363
#29 0x00007f29104e3162 in KWin::EffectsHandler::paintScreen (this=0x55e1ab086cc0, renderTarget=..., viewport=..., mask=<optimized out>, region=..., screen=<optimized out>) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/effect/effecthandler.cpp:363
#30 0x00007f29104e3162 in KWin::EffectsHandler::paintScreen (this=0x55e1ab086cc0, renderTarget=..., viewport=..., mask=<optimized out>, region=..., screen=<optimized out>) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/effect/effecthandler.cpp:363
#31 0x00007f29104e3162 in KWin::EffectsHandler::paintScreen (this=0x55e1ab086cc0, renderTarget=..., viewport=..., mask=<optimized out>, region=..., screen=<optimized out>) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/effect/effecthandler.cpp:363
#32 0x00007f2910620b70 in KWin::WorkspaceScene::paint (this=0x55e1ab072f10, renderTarget=..., region=...) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/scene/workspacescene.cpp:406
#33 0x00007f2910605bc1 in KWin::SceneDelegate::paint (this=<optimized out>, renderTarget=..., region=...) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/scene/scene.cpp:44
#34 0x00007f2910461686 in KWin::Compositor::paintPass (this=0x55e1aa352570, layer=0x55e1ab0c2740, renderTarget=..., region=...) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/compositor.cpp:162
#35 0x00007f291046c5c2 in KWin::Compositor::composite (this=0x55e1aa352570, renderLoop=<optimized out>) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/src/compositor.cpp:553
#36 0x00007f290d765bba in QtPrivate::QSlotObjectBase::call (this=0x55e1aa3437d0, r=0x55e1aa352570, a=0x7ffe9d118460) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/kernel/qobjectdefs_impl.h:461
#37 doActivate<false> (sender=0x55e1aa1e6010, signal_index=5, argv=argv@entry=0x7ffe9d118460) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/kernel/qobject.cpp:4157
#38 0x00007f290d75c4b9 in QMetaObject::activate (sender=<optimized out>, m=<optimized out>, local_signal_index=local_signal_index@entry=2, argv=argv@entry=0x7ffe9d118460) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/kernel/qobject.cpp:4217
#39 0x00007f2910484f5a in QMetaObject::activate<void, KWin::RenderLoop*> (sender=<optimized out>, mo=<optimized out>, local_signal_index=2, ret=0x0) at /usr/include/qt6/QtCore/qobjectdefs.h:306
#40 KWin::RenderLoop::frameRequested (this=<optimized out>, _t1=<optimized out>) at /usr/src/debug/kwin-6.4.5-1.fc43.x86_64/redhat-linux-build/src/kwin_autogen/include/moc_renderloop.cpp:171
#41 0x00007f290d765bba in QtPrivate::QSlotObjectBase::call (this=0x55e1aa13d130, r=0x55e1aa1e6010, a=0x7ffe9d118570) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/kernel/qobjectdefs_impl.h:461
#42 doActivate<false> (sender=0x55e1aa2219b0, signal_index=3, argv=argv@entry=0x7ffe9d118570) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/kernel/qobject.cpp:4157
#43 0x00007f290d75c4b9 in QMetaObject::activate (sender=<optimized out>, m=m@entry=0x7f290dca7060, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffe9d118570) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/kernel/qobject.cpp:4217
#44 0x00007f290d775ec3 in QMetaObject::activate<void, QTimer::QPrivateSignal> (sender=<optimized out>, mo=0x7f290dca7060, local_signal_index=0, ret=0x0) at /usr/src/debug/qt6-qtbase-6.9.2-1.fc43.x86_64/src/corelib/kernel/qobjectdefs.h:306

Reported using DrKonqi

Comment 1 David Edmundson 2025-12-01 10:29:22 UTC

This is crashing in the gallium driver. 

Given we have no similar reports, this is very unlikely to be a kwin issue.
Can you report this to mesa please.

Comment 2 TraceyC 2025-12-23 18:25:14 UTC

*** Bug 513738 has been marked as a duplicate of this bug. ***

Comment 3 TraceyC 2025-12-23 18:45:58 UTC

All the events in Sentry show Fedora or Ultramarine, that's based on Fedora. I've pinged the Fedora folks on Matrix.

Comment 4 Bjarke 2025-12-23 18:58:03 UTC

The fedora bug report is here: https://discussion.fedoraproject.org/t/kwin-crashes-on-f43/172514

Comment 5 Neal Gompa 2025-12-23 21:59:46 UTC

Linking RHBZ report: https://bugzilla.redhat.com/show_bug.cgi?id=2419367