Bug 515209

Summary:	kwin_wayland crashes after opening a edx video in Firefox in the video-in window mode
Product:	[Plasma] kwin	Reporter:	naturechan69
Component:	general	Assignee:	KWin default assignee <kwin-bugs-null>
Status:	RESOLVED UPSTREAM
Severity:	crash	CC:	kdedev
Priority:	NOR	Keywords:	drkonqi
Version First Reported In:	6.5.5
Target Milestone:	---
Platform:	Compiled Sources
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description naturechan69 2026-01-28 15:29:34 UTC

Application: kwin_wayland (6.5.5)
 (Compiled from sources)
ApplicationNotResponding [ANR]: false
Qt Version: 6.10.1
Frameworks Version: 6.22.0
Operating System: Linux 6.18.6-arch1-1 x86_64
Windowing System: Wayland
Distribution: Arch Linux
DrKonqi: 6.5.5 [CoredumpBackend]

-- Information about the crash:
Application: KWin (kwin_wayland), signal: Segmentation fault

Downloading 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:JSVMStack:QtQml (deleted) during file-backed mapping note processing
[New LWP 811]
[New LWP 870]
[New LWP 838]
[New LWP 862]
[New LWP 885]
[New LWP 3717]
[New LWP 3715]
[New LWP 3716]
[New LWP 3718]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/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 :1 --xwayland-xauthority /run/user/1000/xauth_FpCONg --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 0x7fa28f82eb80 (LWP 811))]
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Downloading 5.57 K source file /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp...
[Current thread is 9 (Thread 0x7fa25f6196c0 (LWP 3718))]

Thread 9 (Thread 0x7fa25f6196c0 (LWP 3718)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fa29609316c 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  0x00007fa2960937dc 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  0x00007fa2960960a8 in __pthread_cond_wait_common (cond=0x55e8f94fa6d8, mutex=0x55e8f94fa6b0, clockid=<optimized out>, abstime=0x7fa25f6188d0) at pthread_cond_wait.c:421
#5  ___pthread_cond_timedwait64 (cond=0x55e8f94fa6d8, mutex=0x55e8f94fa6b0, abstime=0x7fa25f6188d0) at pthread_cond_wait.c:478
#6  0x00007fa296b33dc5 in QWaitConditionPrivate::wait_relative (this=0x55e8f94fa6b0, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:58
#7  QWaitConditionPrivate::wait (this=0x55e8f94fa6b0, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:66
#8  QWaitCondition::wait (this=<optimized out>, mutex=0x55e8f80f8e58, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:146
#9  0x00007fa296a8ee69 in QThreadPoolThread::run (this=0x55e8f95edf80) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthreadpool.cpp:120
#10 0x00007fa296b2f899 in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:437
#11 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:367
#12 QThreadPrivate::start (arg=0x55e8f95edf80) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:397
#13 0x00007fa29609698b in start_thread (arg=<optimized out>) at pthread_create.c:448
#14 0x00007fa29611aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 8 (Thread 0x7fa256e186c0 (LWP 3716)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fa29609316c 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  0x00007fa2960937dc 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  0x00007fa2960960a8 in __pthread_cond_wait_common (cond=0x55e8f96864c8, mutex=0x55e8f96864a0, clockid=<optimized out>, abstime=0x7fa256e178d0) at pthread_cond_wait.c:421
#5  ___pthread_cond_timedwait64 (cond=0x55e8f96864c8, mutex=0x55e8f96864a0, abstime=0x7fa256e178d0) at pthread_cond_wait.c:478
#6  0x00007fa296b33dc5 in QWaitConditionPrivate::wait_relative (this=0x55e8f96864a0, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:58
#7  QWaitConditionPrivate::wait (this=0x55e8f96864a0, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:66
#8  QWaitCondition::wait (this=<optimized out>, mutex=0x55e8f80f8e58, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:146
#9  0x00007fa296a8ee69 in QThreadPoolThread::run (this=0x55e8f8d4e300) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthreadpool.cpp:120
#10 0x00007fa296b2f899 in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:437
#11 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:367
#12 QThreadPrivate::start (arg=0x55e8f8d4e300) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:397
#13 0x00007fa29609698b in start_thread (arg=<optimized out>) at pthread_create.c:448
#14 0x00007fa29611aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 7 (Thread 0x7fa25ee186c0 (LWP 3715)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fa29609316c 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  0x00007fa2960937dc 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  0x00007fa2960960a8 in __pthread_cond_wait_common (cond=0x55e8f92fe608, mutex=0x55e8f92fe5e0, clockid=<optimized out>, abstime=0x7fa25ee178d0) at pthread_cond_wait.c:421
#5  ___pthread_cond_timedwait64 (cond=0x55e8f92fe608, mutex=0x55e8f92fe5e0, abstime=0x7fa25ee178d0) at pthread_cond_wait.c:478
#6  0x00007fa296b33dc5 in QWaitConditionPrivate::wait_relative (this=0x55e8f92fe5e0, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:58
#7  QWaitConditionPrivate::wait (this=0x55e8f92fe5e0, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:66
#8  QWaitCondition::wait (this=<optimized out>, mutex=0x55e8f80f8e58, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:146
#9  0x00007fa296a8ee69 in QThreadPoolThread::run (this=0x55e8f842cc60) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthreadpool.cpp:120
#10 0x00007fa296b2f899 in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:437
#11 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:367
#12 QThreadPrivate::start (arg=0x55e8f842cc60) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:397
#13 0x00007fa29609698b in start_thread (arg=<optimized out>) at pthread_create.c:448
#14 0x00007fa29611aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 6 (Thread 0x7fa25fe1a6c0 (LWP 3717)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fa29609316c 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  0x00007fa2960937dc 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  0x00007fa2960960a8 in __pthread_cond_wait_common (cond=0x55e8f95cc9f8, mutex=0x55e8f95cc9d0, clockid=<optimized out>, abstime=0x7fa25fe198d0) at pthread_cond_wait.c:421
#5  ___pthread_cond_timedwait64 (cond=0x55e8f95cc9f8, mutex=0x55e8f95cc9d0, abstime=0x7fa25fe198d0) at pthread_cond_wait.c:478
#6  0x00007fa296b33dc5 in QWaitConditionPrivate::wait_relative (this=0x55e8f95cc9d0, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:58
#7  QWaitConditionPrivate::wait (this=0x55e8f95cc9d0, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:66
#8  QWaitCondition::wait (this=<optimized out>, mutex=0x55e8f80f8e58, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:146
#9  0x00007fa296a8ee69 in QThreadPoolThread::run (this=0x55e8f95cd190) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthreadpool.cpp:120
#10 0x00007fa296b2f899 in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:437
#11 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:367
#12 QThreadPrivate::start (arg=0x55e8f95cd190) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:397
#13 0x00007fa29609698b in start_thread (arg=<optimized out>) at pthread_create.c:448
#14 0x00007fa29611aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 5 (Thread 0x7fa27a9bb6c0 (LWP 885)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fa29609316c 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  0x00007fa2960931b4 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  0x00007fa29610da36 in __GI_ppoll (fds=fds@entry=0x7fa2640014a0, nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:42
#4  0x00007fa295543784 in ppoll (__fds=0x7fa2640014a0, __nfds=1, __timeout=0x0, __ss=0x0) at /usr/include/bits/poll2.h:101
#5  g_main_context_poll_unlocked (priority=<optimized out>, context=0x7fa264000d00, timeout_usec=<optimized out>, fds=0x7fa2640014a0, n_fds=1) at ../glib/glib/gmain.c:4811
#6  g_main_context_iterate_unlocked (context=context@entry=0x7fa264000d00, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4485
#7  0x00007fa295543865 in g_main_context_iteration (context=0x7fa264000d00, may_block=1) at ../glib/glib/gmain.c:4556
#8  0x00007fa296c48152 in QEventDispatcherGlib::processEvents (this=0x7fa264000be0, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#9  0x00007fa296975786 in QEventLoop::processEvents (this=0x7fa27a9ba980, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:104
#10 QEventLoop::exec (this=0x7fa27a9ba980, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:186
#11 0x00007fa296a9041e in QThread::exec (this=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread.cpp:672
#12 0x00007fa296b2f899 in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:437
#13 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:367
#14 QThreadPrivate::start (arg=0x55e8f90daf00) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:397
#15 0x00007fa29609698b in start_thread (arg=<optimized out>) at pthread_create.c:448
#16 0x00007fa29611aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 4 (Thread 0x7fa28e0c46c0 (LWP 862)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fa29609316c 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  0x00007fa2960937dc 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  0x00007fa296095e9e in __pthread_cond_wait_common (cond=0x55e8f815d710, mutex=0x55e8f815d6e0, clockid=0, abstime=0x0) at pthread_cond_wait.c:421
#5  ___pthread_cond_wait (cond=0x55e8f815d710, mutex=0x55e8f815d6e0) at pthread_cond_wait.c:453
#6  0x00007fa2851e5fae in cnd_wait () at ../mesa-25.3.4/src/c11/impl/threads_posix.c:112
#7  0x00007fa28519b37d in util_queue_thread_func () at ../mesa-25.3.4/src/util/u_queue.c:275
#8  0x00007fa2851e5edd in impl_thrd_routine () at ../mesa-25.3.4/src/c11/impl/threads_posix.c:43
#9  0x00007fa29609698b in start_thread (arg=<optimized out>) at pthread_create.c:448
#10 0x00007fa29611aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 3 (Thread 0x7fa28f3ff6c0 (LWP 838)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fa29609316c 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  0x00007fa2960931b4 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  0x00007fa29610da36 in __GI_ppoll (fds=fds@entry=0x7fa288001680, nfds=nfds@entry=3, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:42
#4  0x00007fa295543784 in ppoll (__fds=0x7fa288001680, __nfds=3, __timeout=0x0, __ss=0x0) at /usr/include/bits/poll2.h:101
#5  g_main_context_poll_unlocked (priority=<optimized out>, context=0x7fa288000d00, timeout_usec=<optimized out>, fds=0x7fa288001680, n_fds=3) at ../glib/glib/gmain.c:4811
#6  g_main_context_iterate_unlocked (context=context@entry=0x7fa288000d00, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4485
#7  0x00007fa295543865 in g_main_context_iteration (context=0x7fa288000d00, may_block=1) at ../glib/glib/gmain.c:4556
#8  0x00007fa296c48152 in QEventDispatcherGlib::processEvents (this=0x7fa288000be0, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#9  0x00007fa296975786 in QEventLoop::processEvents (this=0x7fa28f3fe930, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:104
#10 QEventLoop::exec (this=0x7fa28f3fe930, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:186
#11 0x00007fa296a9041e in QThread::exec (this=this@entry=0x7fa296ffee20 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread.cpp:672
#12 0x00007fa296f7603e in QDBusConnectionManager::run (this=0x7fa296ffee20 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/debug/qt6-base/qtbase/src/dbus/qdbusconnectionmanager.cpp:145
#13 0x00007fa296b2f899 in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:437
#14 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:367
#15 QThreadPrivate::start (arg=0x7fa296ffee20 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:397
#16 0x00007fa29609698b in start_thread (arg=<optimized out>) at pthread_create.c:448
#17 0x00007fa29611aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 2 (Thread 0x7fa28d7aa6c0 (LWP 870)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fa29609316c 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  0x00007fa2960931b4 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  0x00007fa29610da36 in __GI_ppoll (fds=fds@entry=0x7fa26c001550, nfds=nfds@entry=2, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:42
#4  0x00007fa295543784 in ppoll (__fds=0x7fa26c001550, __nfds=2, __timeout=0x0, __ss=0x0) at /usr/include/bits/poll2.h:101
#5  g_main_context_poll_unlocked (priority=<optimized out>, context=0x7fa26c000d00, timeout_usec=<optimized out>, fds=0x7fa26c001550, n_fds=2) at ../glib/glib/gmain.c:4811
#6  g_main_context_iterate_unlocked (context=context@entry=0x7fa26c000d00, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4485
#7  0x00007fa295543865 in g_main_context_iteration (context=0x7fa26c000d00, may_block=1) at ../glib/glib/gmain.c:4556
#8  0x00007fa296c48152 in QEventDispatcherGlib::processEvents (this=0x7fa26c000be0, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#9  0x00007fa296975786 in QEventLoop::processEvents (this=0x7fa28d7a9980, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:104
#10 QEventLoop::exec (this=0x7fa28d7a9980, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:186
#11 0x00007fa296a9041e in QThread::exec (this=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread.cpp:672
#12 0x00007fa296b2f899 in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:437
#13 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:367
#14 QThreadPrivate::start (arg=0x55e8f83133f8) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:397
#15 0x00007fa29609698b in start_thread (arg=<optimized out>) at pthread_create.c:448
#16 0x00007fa29611aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 1 (Thread 0x7fa28f82eb80 (LWP 811)):
[KCrash Handler]
#4  pushbuf_dump () at ../mesa-25.3.4/src/gallium/winsys/nouveau/drm/nouveau.c:1124
#5  0x00007fa2857c424f in pushbuf_submit () at ../mesa-25.3.4/src/gallium/winsys/nouveau/drm/nouveau.c:1197
#6  pushbuf_flush () at ../mesa-25.3.4/src/gallium/winsys/nouveau/drm/nouveau.c:1235
#7  0x00007fa2857c4e0b in pushbuf_refn () at ../mesa-25.3.4/src/gallium/winsys/nouveau/drm/nouveau.c:1488
#8  0x00007fa285e7be4c in nvc0_screen_fence_emit () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c:596
#9  0x00007fa285ea29e7 in _nouveau_fence_emit () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nouveau_fence.c:95
#10 0x00007fa285ea2da4 in _nouveau_fence_next () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nouveau_fence.c:291
#11 0x00007fa285ef3756 in nvc0_default_kick_notify () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nvc0/nvc0_context.c:281
#12 0x00007fa2857c3e3c in pushbuf_submit () at ../mesa-25.3.4/src/gallium/winsys/nouveau/drm/nouveau.c:1167
#13 pushbuf_flush () at ../mesa-25.3.4/src/gallium/winsys/nouveau/drm/nouveau.c:1235
#14 0x00007fa2857c4e0b in pushbuf_refn () at ../mesa-25.3.4/src/gallium/winsys/nouveau/drm/nouveau.c:1488
#15 0x00007fa285e98b66 in PUSH_REFN () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nouveau_winsys.h:80
#16 PUSH_REF1 () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nouveau_winsys.h:89
#17 nvc0_cb_bo_push () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nvc0/nvc0_transfer.c:601
#18 0x00007fa285f05308 in nvc0_constbufs_validate () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nvc0/nvc0_state_validate.c:550
#19 0x00007fa285f0a321 in nvc0_state_validate () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nvc0/nvc0_state_validate.c:913
#20 0x00007fa285f0a4ff in nvc0_state_validate_3d () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nvc0/nvc0_state_validate.c:931
#21 0x00007fa285f0c4f8 in nvc0_draw_vbo () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nvc0/nvc0_vbo.c:1160
#22 0x00007fa284d546d5 in cso_draw_vbo () at ../mesa-25.3.4/src/gallium/auxiliary/cso_cache/cso_context.h:249
#23 st_draw_gallium () at ../mesa-25.3.4/src/mesa/state_tracker/st_draw.c:104
#24 0x00007fa284ee4ad0 in _mesa_draw_arrays () at ../mesa-25.3.4/src/mesa/main/draw.c:1178
#25 0x00007fa299539ca2 in KWin::ItemRendererOpenGL::renderItem(KWin::RenderTarget const&, KWin::RenderViewport const&, KWin::Item*, int, QRegion const&, KWin::WindowPaintData const&, std::function<bool (KWin::Item*)> const&, std::function<bool (KWin::Item*)> const&) () from /usr/lib/libkwin.so.6
#26 0x00007fa2995549bd in KWin::WorkspaceScene::finalDrawWindow(KWin::RenderTarget const&, KWin::RenderViewport const&, KWin::EffectWindow*, int, QRegion const&, KWin::WindowPaintData&) () from /usr/lib/libkwin.so.6
#27 0x00007fa29940f3ec in KWin::EffectsHandler::drawWindow(KWin::RenderTarget const&, KWin::RenderViewport const&, KWin::EffectWindow*, int, QRegion const&, KWin::WindowPaintData&) () from /usr/lib/libkwin.so.6
#28 0x00007fa29940f300 in KWin::EffectsHandler::paintWindow(KWin::RenderTarget const&, KWin::RenderViewport const&, KWin::EffectWindow*, int, QRegion const&, KWin::WindowPaintData&) () from /usr/lib/libkwin.so.6
#29 0x00007fa2995598a3 in KWin::WorkspaceScene::paintWindow(KWin::RenderTarget const&, KWin::RenderViewport const&, KWin::WindowItem*, int, QRegion const&) () from /usr/lib/libkwin.so.6
#30 0x00007fa299559b9f in KWin::WorkspaceScene::paintSimpleScreen(KWin::RenderTarget const&, KWin::RenderViewport const&, int, QRegion const&) () from /usr/lib/libkwin.so.6
#31 0x00007fa29940f215 in KWin::EffectsHandler::paintScreen(KWin::RenderTarget const&, KWin::RenderViewport const&, int, QRegion const&, KWin::Output*) () from /usr/lib/libkwin.so.6
#32 0x00007fa299559ce7 in KWin::WorkspaceScene::paint(KWin::RenderTarget const&, QRegion const&) () from /usr/lib/libkwin.so.6
#33 0x00007fa2995333e6 in KWin::SceneView::paint(KWin::RenderTarget const&, QRegion const&) () from /usr/lib/libkwin.so.6
#34 0x00007fa29938af17 in ?? () from /usr/lib/libkwin.so.6
#35 0x00007fa29938f621 in KWin::Compositor::composite(KWin::RenderLoop*) () from /usr/lib/libkwin.so.6
#36 0x00007fa2969d734f in QtPrivate::QSlotObjectBase::call (this=<optimized out>, r=<optimized out>, a=<optimized out>, this=<optimized out>, r=<optimized out>, a=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobjectdefs_impl.h:461
#37 doActivate<false> (sender=<optimized out>, signal_index=<optimized out>, argv=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:4257
#38 0x00007fa2993b4c0b in KWin::RenderLoop::frameRequested(KWin::RenderLoop*) () from /usr/lib/libkwin.so.6
#39 0x00007fa2969c4936 in QObject::event (this=<optimized out>, e=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:1388
#40 0x00007fa297b021c0 in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x55e8f8310600, e=0x7ffc0842b650) at /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qapplication.cpp:3305
#41 0x00007fa29696a958 in QCoreApplication::notifyInternal2 (receiver=0x55e8f8310600, event=0x7ffc0842b650) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1109
#42 0x00007fa296b2c9af in QCoreApplication::sendEvent (receiver=<optimized out>, event=0x7ffc0842b650) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1549
#43 QTimerInfoList::activateTimers (this=this@entry=0x55e8f8179bc8) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qtimerinfo_unix.cpp:426
#44 0x00007fa296b2e549 in QEventDispatcherUNIXPrivate::activateTimers (this=0x55e8f8179af0) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_unix.cpp:221
#45 QEventDispatcherUNIX::processEvents (this=<optimized out>, flags=..., flags@entry=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_unix.cpp:503
#46 0x00007fa297734b73 in QUnixEventDispatcherQPA::processEvents (this=<optimized out>, flags=...) at /usr/src/debug/qt6-base/qtbase/src/gui/platform/unix/qunixeventdispatcher.cpp:28
#47 0x00007fa296975786 in QEventLoop::processEvents (this=0x7ffc0842b830, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:104
#48 QEventLoop::exec (this=0x7ffc0842b830, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:186
#49 0x00007fa29696f3f1 in QCoreApplication::exec () at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1452
#50 0x000055e8c6a0ea94 in ?? ()
#51 0x00007fa296027635 in __libc_start_call_main (main=main@entry=0x55e8c6a0c6a0, argc=argc@entry=14, argv=argv@entry=0x7ffc0842c088) at ../sysdeps/nptl/libc_start_call_main.h:58
#52 0x00007fa2960276e9 in __libc_start_main_impl (main=0x55e8c6a0c6a0, argc=14, argv=0x7ffc0842c088, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc0842c078) at ../csu/libc-start.c:360
#53 0x000055e8c6a14f55 in ?? ()

The crash can be reproduced every time.

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

Downloading 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:JSVMStack:QtQml (deleted) during file-backed mapping note processing
[New LWP 811]
[New LWP 870]
[New LWP 838]
[New LWP 862]
[New LWP 885]
[New LWP 3717]
[New LWP 3715]
[New LWP 3716]
[New LWP 3718]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/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 :1 --xwayland-xauthority /run/user/1000/xauth_FpCONg --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 0x7fa28f82eb80 (LWP 811))]
add symbol table from file "/usr/lib/libc.so.6"
Downloading 1.53 M separate debug info for /usr/lib/libKF6Crash.so.6...
add symbol table from file "/usr/lib/libKF6Crash.so.6"
Downloading 49.62 M separate debug info for /usr/lib/libgallium-25.3.4-arch1.1.so...
add symbol table from file "/usr/lib/libgallium-25.3.4-arch1.1.so"
add symbol table from file "/usr/lib/libkwin.so.6"
Downloading 103.06 M separate debug info for /usr/lib/libQt6Core.so.6...
add symbol table from file "/usr/lib/libQt6Core.so.6"
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add symbol table from file "/usr/lib/libQt6Gui.so.6"
add symbol table from file "/usr/bin/kwin_wayland"
Downloading 113.32 K source file /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp...
Downloading 13.18 K source file /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp...
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Downloading 8.64 K source file /usr/src/debug/mesa/build/../mesa-25.3.4/src/gallium/auxiliary/cso_cache/cso_context.h...
Downloading 40.10 K source file /usr/src/debug/mesa/build/../mesa-25.3.4/src/gallium/drivers/nouveau/nvc0/nvc0_vbo.c...
Downloading 31.49 K source file /usr/src/debug/mesa/build/../mesa-25.3.4/src/gallium/drivers/nouveau/nvc0/nvc0_state_validate.c...
Downloading 19.33 K source file /usr/src/debug/mesa/build/../mesa-25.3.4/src/gallium/drivers/nouveau/nvc0/nvc0_transfer.c...
Downloading 5.18 K source file /usr/src/debug/mesa/build/../mesa-25.3.4/src/gallium/drivers/nouveau/nouveau_winsys.h...
Downloading 48.02 K source file /usr/src/debug/mesa/build/../mesa-25.3.4/src/gallium/winsys/nouveau/drm/nouveau.c...
Downloading 20.03 K source file /usr/src/debug/mesa/build/../mesa-25.3.4/src/gallium/drivers/nouveau/nvc0/nvc0_context.c...
Downloading 10.71 K source file /usr/src/debug/mesa/build/../mesa-25.3.4/src/gallium/drivers/nouveau/nouveau_fence.c...
Downloading 46.03 K source file /usr/src/debug/mesa/build/../mesa-25.3.4/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c...
Downloading 4.72 M separate debug info for /usr/lib/libglib-2.0.so.0...
add symbol table from file "/usr/lib/libglib-2.0.so.0"
Downloading 34.67 K source file /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp...
Downloading 41.50 K source file /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread.cpp...
Downloading 17.53 K source file /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp...
Downloading 190.70 K source file /usr/src/debug/glib2/build/../glib/glib/gmain.c...
Downloading 20.41 M separate debug info for /usr/lib/libQt6DBus.so.6...
add symbol table from file "/usr/lib/libQt6DBus.so.6"
Downloading 10.11 K source file /usr/src/debug/qt6-base/qtbase/src/dbus/qdbusconnectionmanager.cpp...
Downloading 7.09 K source file /usr/src/debug/mesa/build/../mesa-25.3.4/src/c11/impl/threads_posix.c...
Downloading 20.50 K source file /usr/src/debug/mesa/build/../mesa-25.3.4/src/util/u_queue.c...
Downloading 25.92 K source file /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthreadpool.cpp...
Downloading 5.57 K source file /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp...
[Current thread is 9 (Thread 0x7fa25f6196c0 (LWP 3718))]

Thread 9 (Thread 0x7fa25f6196c0 (LWP 3718)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fa29609316c 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  0x00007fa2960937dc 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  0x00007fa2960960a8 in __pthread_cond_wait_common (cond=0x55e8f94fa6d8, mutex=0x55e8f94fa6b0, clockid=<optimized out>, abstime=0x7fa25f6188d0) at pthread_cond_wait.c:421
#5  ___pthread_cond_timedwait64 (cond=0x55e8f94fa6d8, mutex=0x55e8f94fa6b0, abstime=0x7fa25f6188d0) at pthread_cond_wait.c:478
#6  0x00007fa296b33dc5 in QWaitConditionPrivate::wait_relative (this=0x55e8f94fa6b0, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:58
#7  QWaitConditionPrivate::wait (this=0x55e8f94fa6b0, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:66
#8  QWaitCondition::wait (this=<optimized out>, mutex=0x55e8f80f8e58, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:146
#9  0x00007fa296a8ee69 in QThreadPoolThread::run (this=0x55e8f95edf80) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthreadpool.cpp:120
#10 0x00007fa296b2f899 in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:437
#11 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:367
#12 QThreadPrivate::start (arg=0x55e8f95edf80) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:397
#13 0x00007fa29609698b in start_thread (arg=<optimized out>) at pthread_create.c:448
#14 0x00007fa29611aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 8 (Thread 0x7fa256e186c0 (LWP 3716)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fa29609316c 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  0x00007fa2960937dc 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  0x00007fa2960960a8 in __pthread_cond_wait_common (cond=0x55e8f96864c8, mutex=0x55e8f96864a0, clockid=<optimized out>, abstime=0x7fa256e178d0) at pthread_cond_wait.c:421
#5  ___pthread_cond_timedwait64 (cond=0x55e8f96864c8, mutex=0x55e8f96864a0, abstime=0x7fa256e178d0) at pthread_cond_wait.c:478
#6  0x00007fa296b33dc5 in QWaitConditionPrivate::wait_relative (this=0x55e8f96864a0, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:58
#7  QWaitConditionPrivate::wait (this=0x55e8f96864a0, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:66
#8  QWaitCondition::wait (this=<optimized out>, mutex=0x55e8f80f8e58, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:146
#9  0x00007fa296a8ee69 in QThreadPoolThread::run (this=0x55e8f8d4e300) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthreadpool.cpp:120
#10 0x00007fa296b2f899 in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:437
#11 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:367
#12 QThreadPrivate::start (arg=0x55e8f8d4e300) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:397
#13 0x00007fa29609698b in start_thread (arg=<optimized out>) at pthread_create.c:448
#14 0x00007fa29611aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 7 (Thread 0x7fa25ee186c0 (LWP 3715)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fa29609316c 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  0x00007fa2960937dc 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  0x00007fa2960960a8 in __pthread_cond_wait_common (cond=0x55e8f92fe608, mutex=0x55e8f92fe5e0, clockid=<optimized out>, abstime=0x7fa25ee178d0) at pthread_cond_wait.c:421
#5  ___pthread_cond_timedwait64 (cond=0x55e8f92fe608, mutex=0x55e8f92fe5e0, abstime=0x7fa25ee178d0) at pthread_cond_wait.c:478
#6  0x00007fa296b33dc5 in QWaitConditionPrivate::wait_relative (this=0x55e8f92fe5e0, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:58
#7  QWaitConditionPrivate::wait (this=0x55e8f92fe5e0, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:66
#8  QWaitCondition::wait (this=<optimized out>, mutex=0x55e8f80f8e58, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:146
#9  0x00007fa296a8ee69 in QThreadPoolThread::run (this=0x55e8f842cc60) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthreadpool.cpp:120
#10 0x00007fa296b2f899 in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:437
#11 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:367
#12 QThreadPrivate::start (arg=0x55e8f842cc60) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:397
#13 0x00007fa29609698b in start_thread (arg=<optimized out>) at pthread_create.c:448
#14 0x00007fa29611aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 6 (Thread 0x7fa25fe1a6c0 (LWP 3717)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fa29609316c 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  0x00007fa2960937dc 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  0x00007fa2960960a8 in __pthread_cond_wait_common (cond=0x55e8f95cc9f8, mutex=0x55e8f95cc9d0, clockid=<optimized out>, abstime=0x7fa25fe198d0) at pthread_cond_wait.c:421
#5  ___pthread_cond_timedwait64 (cond=0x55e8f95cc9f8, mutex=0x55e8f95cc9d0, abstime=0x7fa25fe198d0) at pthread_cond_wait.c:478
#6  0x00007fa296b33dc5 in QWaitConditionPrivate::wait_relative (this=0x55e8f95cc9d0, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:58
#7  QWaitConditionPrivate::wait (this=0x55e8f95cc9d0, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:66
#8  QWaitCondition::wait (this=<optimized out>, mutex=0x55e8f80f8e58, deadline=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:146
#9  0x00007fa296a8ee69 in QThreadPoolThread::run (this=0x55e8f95cd190) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthreadpool.cpp:120
#10 0x00007fa296b2f899 in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:437
#11 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:367
#12 QThreadPrivate::start (arg=0x55e8f95cd190) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:397
#13 0x00007fa29609698b in start_thread (arg=<optimized out>) at pthread_create.c:448
#14 0x00007fa29611aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 5 (Thread 0x7fa27a9bb6c0 (LWP 885)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fa29609316c 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  0x00007fa2960931b4 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  0x00007fa29610da36 in __GI_ppoll (fds=fds@entry=0x7fa2640014a0, nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:42
#4  0x00007fa295543784 in ppoll (__fds=0x7fa2640014a0, __nfds=1, __timeout=0x0, __ss=0x0) at /usr/include/bits/poll2.h:101
#5  g_main_context_poll_unlocked (priority=<optimized out>, context=0x7fa264000d00, timeout_usec=<optimized out>, fds=0x7fa2640014a0, n_fds=1) at ../glib/glib/gmain.c:4811
#6  g_main_context_iterate_unlocked (context=context@entry=0x7fa264000d00, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4485
#7  0x00007fa295543865 in g_main_context_iteration (context=0x7fa264000d00, may_block=1) at ../glib/glib/gmain.c:4556
#8  0x00007fa296c48152 in QEventDispatcherGlib::processEvents (this=0x7fa264000be0, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#9  0x00007fa296975786 in QEventLoop::processEvents (this=0x7fa27a9ba980, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:104
#10 QEventLoop::exec (this=0x7fa27a9ba980, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:186
#11 0x00007fa296a9041e in QThread::exec (this=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread.cpp:672
#12 0x00007fa296b2f899 in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:437
#13 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:367
#14 QThreadPrivate::start (arg=0x55e8f90daf00) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:397
#15 0x00007fa29609698b in start_thread (arg=<optimized out>) at pthread_create.c:448
#16 0x00007fa29611aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 4 (Thread 0x7fa28e0c46c0 (LWP 862)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fa29609316c 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  0x00007fa2960937dc 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  0x00007fa296095e9e in __pthread_cond_wait_common (cond=0x55e8f815d710, mutex=0x55e8f815d6e0, clockid=0, abstime=0x0) at pthread_cond_wait.c:421
#5  ___pthread_cond_wait (cond=0x55e8f815d710, mutex=0x55e8f815d6e0) at pthread_cond_wait.c:453
#6  0x00007fa2851e5fae in cnd_wait () at ../mesa-25.3.4/src/c11/impl/threads_posix.c:112
#7  0x00007fa28519b37d in util_queue_thread_func () at ../mesa-25.3.4/src/util/u_queue.c:275
#8  0x00007fa2851e5edd in impl_thrd_routine () at ../mesa-25.3.4/src/c11/impl/threads_posix.c:43
#9  0x00007fa29609698b in start_thread (arg=<optimized out>) at pthread_create.c:448
#10 0x00007fa29611aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 3 (Thread 0x7fa28f3ff6c0 (LWP 838)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fa29609316c 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  0x00007fa2960931b4 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  0x00007fa29610da36 in __GI_ppoll (fds=fds@entry=0x7fa288001680, nfds=nfds@entry=3, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:42
#4  0x00007fa295543784 in ppoll (__fds=0x7fa288001680, __nfds=3, __timeout=0x0, __ss=0x0) at /usr/include/bits/poll2.h:101
#5  g_main_context_poll_unlocked (priority=<optimized out>, context=0x7fa288000d00, timeout_usec=<optimized out>, fds=0x7fa288001680, n_fds=3) at ../glib/glib/gmain.c:4811
#6  g_main_context_iterate_unlocked (context=context@entry=0x7fa288000d00, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4485
#7  0x00007fa295543865 in g_main_context_iteration (context=0x7fa288000d00, may_block=1) at ../glib/glib/gmain.c:4556
#8  0x00007fa296c48152 in QEventDispatcherGlib::processEvents (this=0x7fa288000be0, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#9  0x00007fa296975786 in QEventLoop::processEvents (this=0x7fa28f3fe930, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:104
#10 QEventLoop::exec (this=0x7fa28f3fe930, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:186
#11 0x00007fa296a9041e in QThread::exec (this=this@entry=0x7fa296ffee20 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread.cpp:672
#12 0x00007fa296f7603e in QDBusConnectionManager::run (this=0x7fa296ffee20 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/debug/qt6-base/qtbase/src/dbus/qdbusconnectionmanager.cpp:145
#13 0x00007fa296b2f899 in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:437
#14 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:367
#15 QThreadPrivate::start (arg=0x7fa296ffee20 <QGlobalStatic<QtGlobalStatic::Holder<(anonymous namespace)::Q_QGS__q_manager> >::instance()::holder>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:397
#16 0x00007fa29609698b in start_thread (arg=<optimized out>) at pthread_create.c:448
#17 0x00007fa29611aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 2 (Thread 0x7fa28d7aa6c0 (LWP 870)):
#0  __syscall_cancel_arch () at ../sysdeps/unix/sysv/linux/x86_64/syscall_cancel.S:56
#1  0x00007fa29609316c 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  0x00007fa2960931b4 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  0x00007fa29610da36 in __GI_ppoll (fds=fds@entry=0x7fa26c001550, nfds=nfds@entry=2, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:42
#4  0x00007fa295543784 in ppoll (__fds=0x7fa26c001550, __nfds=2, __timeout=0x0, __ss=0x0) at /usr/include/bits/poll2.h:101
#5  g_main_context_poll_unlocked (priority=<optimized out>, context=0x7fa26c000d00, timeout_usec=<optimized out>, fds=0x7fa26c001550, n_fds=2) at ../glib/glib/gmain.c:4811
#6  g_main_context_iterate_unlocked (context=context@entry=0x7fa26c000d00, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/glib/gmain.c:4485
#7  0x00007fa295543865 in g_main_context_iteration (context=0x7fa26c000d00, may_block=1) at ../glib/glib/gmain.c:4556
#8  0x00007fa296c48152 in QEventDispatcherGlib::processEvents (this=0x7fa26c000be0, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:399
#9  0x00007fa296975786 in QEventLoop::processEvents (this=0x7fa28d7a9980, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:104
#10 QEventLoop::exec (this=0x7fa28d7a9980, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:186
#11 0x00007fa296a9041e in QThread::exec (this=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread.cpp:672
#12 0x00007fa296b2f899 in operator() (__closure=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:437
#13 (anonymous namespace)::terminate_on_exception<QThreadPrivate::start(void*)::<lambda()> > (t=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:367
#14 QThreadPrivate::start (arg=0x55e8f83133f8) at /usr/src/debug/qt6-base/qtbase/src/corelib/thread/qthread_unix.cpp:397
#15 0x00007fa29609698b in start_thread (arg=<optimized out>) at pthread_create.c:448
#16 0x00007fa29611aa0c in __GI___clone3 () at ../sysdeps/unix/sysv/linux/x86_64/clone3.S:78

Thread 1 (Thread 0x7fa28f82eb80 (LWP 811)):
[KCrash Handler]
#4  pushbuf_dump () at ../mesa-25.3.4/src/gallium/winsys/nouveau/drm/nouveau.c:1124
#5  0x00007fa2857c424f in pushbuf_submit () at ../mesa-25.3.4/src/gallium/winsys/nouveau/drm/nouveau.c:1197
#6  pushbuf_flush () at ../mesa-25.3.4/src/gallium/winsys/nouveau/drm/nouveau.c:1235
#7  0x00007fa2857c4e0b in pushbuf_refn () at ../mesa-25.3.4/src/gallium/winsys/nouveau/drm/nouveau.c:1488
#8  0x00007fa285e7be4c in nvc0_screen_fence_emit () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c:596
#9  0x00007fa285ea29e7 in _nouveau_fence_emit () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nouveau_fence.c:95
#10 0x00007fa285ea2da4 in _nouveau_fence_next () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nouveau_fence.c:291
#11 0x00007fa285ef3756 in nvc0_default_kick_notify () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nvc0/nvc0_context.c:281
#12 0x00007fa2857c3e3c in pushbuf_submit () at ../mesa-25.3.4/src/gallium/winsys/nouveau/drm/nouveau.c:1167
#13 pushbuf_flush () at ../mesa-25.3.4/src/gallium/winsys/nouveau/drm/nouveau.c:1235
#14 0x00007fa2857c4e0b in pushbuf_refn () at ../mesa-25.3.4/src/gallium/winsys/nouveau/drm/nouveau.c:1488
#15 0x00007fa285e98b66 in PUSH_REFN () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nouveau_winsys.h:80
#16 PUSH_REF1 () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nouveau_winsys.h:89
#17 nvc0_cb_bo_push () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nvc0/nvc0_transfer.c:601
#18 0x00007fa285f05308 in nvc0_constbufs_validate () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nvc0/nvc0_state_validate.c:550
#19 0x00007fa285f0a321 in nvc0_state_validate () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nvc0/nvc0_state_validate.c:913
#20 0x00007fa285f0a4ff in nvc0_state_validate_3d () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nvc0/nvc0_state_validate.c:931
#21 0x00007fa285f0c4f8 in nvc0_draw_vbo () at ../mesa-25.3.4/src/gallium/drivers/nouveau/nvc0/nvc0_vbo.c:1160
#22 0x00007fa284d546d5 in cso_draw_vbo () at ../mesa-25.3.4/src/gallium/auxiliary/cso_cache/cso_context.h:249
#23 st_draw_gallium () at ../mesa-25.3.4/src/mesa/state_tracker/st_draw.c:104
#24 0x00007fa284ee4ad0 in _mesa_draw_arrays () at ../mesa-25.3.4/src/mesa/main/draw.c:1178
#25 0x00007fa299539ca2 in KWin::ItemRendererOpenGL::renderItem(KWin::RenderTarget const&, KWin::RenderViewport const&, KWin::Item*, int, QRegion const&, KWin::WindowPaintData const&, std::function<bool (KWin::Item*)> const&, std::function<bool (KWin::Item*)> const&) () from /usr/lib/libkwin.so.6
#26 0x00007fa2995549bd in KWin::WorkspaceScene::finalDrawWindow(KWin::RenderTarget const&, KWin::RenderViewport const&, KWin::EffectWindow*, int, QRegion const&, KWin::WindowPaintData&) () from /usr/lib/libkwin.so.6
#27 0x00007fa29940f3ec in KWin::EffectsHandler::drawWindow(KWin::RenderTarget const&, KWin::RenderViewport const&, KWin::EffectWindow*, int, QRegion const&, KWin::WindowPaintData&) () from /usr/lib/libkwin.so.6
#28 0x00007fa29940f300 in KWin::EffectsHandler::paintWindow(KWin::RenderTarget const&, KWin::RenderViewport const&, KWin::EffectWindow*, int, QRegion const&, KWin::WindowPaintData&) () from /usr/lib/libkwin.so.6
#29 0x00007fa2995598a3 in KWin::WorkspaceScene::paintWindow(KWin::RenderTarget const&, KWin::RenderViewport const&, KWin::WindowItem*, int, QRegion const&) () from /usr/lib/libkwin.so.6
#30 0x00007fa299559b9f in KWin::WorkspaceScene::paintSimpleScreen(KWin::RenderTarget const&, KWin::RenderViewport const&, int, QRegion const&) () from /usr/lib/libkwin.so.6
#31 0x00007fa29940f215 in KWin::EffectsHandler::paintScreen(KWin::RenderTarget const&, KWin::RenderViewport const&, int, QRegion const&, KWin::Output*) () from /usr/lib/libkwin.so.6
#32 0x00007fa299559ce7 in KWin::WorkspaceScene::paint(KWin::RenderTarget const&, QRegion const&) () from /usr/lib/libkwin.so.6
#33 0x00007fa2995333e6 in KWin::SceneView::paint(KWin::RenderTarget const&, QRegion const&) () from /usr/lib/libkwin.so.6
#34 0x00007fa29938af17 in ?? () from /usr/lib/libkwin.so.6
#35 0x00007fa29938f621 in KWin::Compositor::composite(KWin::RenderLoop*) () from /usr/lib/libkwin.so.6
#36 0x00007fa2969d734f in QtPrivate::QSlotObjectBase::call (this=<optimized out>, r=<optimized out>, a=<optimized out>, this=<optimized out>, r=<optimized out>, a=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobjectdefs_impl.h:461
#37 doActivate<false> (sender=<optimized out>, signal_index=<optimized out>, argv=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:4257
#38 0x00007fa2993b4c0b in KWin::RenderLoop::frameRequested(KWin::RenderLoop*) () from /usr/lib/libkwin.so.6
#39 0x00007fa2969c4936 in QObject::event (this=<optimized out>, e=<optimized out>) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qobject.cpp:1388
#40 0x00007fa297b021c0 in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x55e8f8310600, e=0x7ffc0842b650) at /usr/src/debug/qt6-base/qtbase/src/widgets/kernel/qapplication.cpp:3305
#41 0x00007fa29696a958 in QCoreApplication::notifyInternal2 (receiver=0x55e8f8310600, event=0x7ffc0842b650) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1109
#42 0x00007fa296b2c9af in QCoreApplication::sendEvent (receiver=<optimized out>, event=0x7ffc0842b650) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1549
#43 QTimerInfoList::activateTimers (this=this@entry=0x55e8f8179bc8) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qtimerinfo_unix.cpp:426
#44 0x00007fa296b2e549 in QEventDispatcherUNIXPrivate::activateTimers (this=0x55e8f8179af0) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_unix.cpp:221
#45 QEventDispatcherUNIX::processEvents (this=<optimized out>, flags=..., flags@entry=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventdispatcher_unix.cpp:503
#46 0x00007fa297734b73 in QUnixEventDispatcherQPA::processEvents (this=<optimized out>, flags=...) at /usr/src/debug/qt6-base/qtbase/src/gui/platform/unix/qunixeventdispatcher.cpp:28
#47 0x00007fa296975786 in QEventLoop::processEvents (this=0x7ffc0842b830, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:104
#48 QEventLoop::exec (this=0x7ffc0842b830, flags=...) at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qeventloop.cpp:186
#49 0x00007fa29696f3f1 in QCoreApplication::exec () at /usr/src/debug/qt6-base/qtbase/src/corelib/kernel/qcoreapplication.cpp:1452
#50 0x000055e8c6a0ea94 in ?? ()
#51 0x00007fa296027635 in __libc_start_call_main (main=main@entry=0x55e8c6a0c6a0, argc=argc@entry=14, argv=argv@entry=0x7ffc0842c088) at ../sysdeps/nptl/libc_start_call_main.h:58
#52 0x00007fa2960276e9 in __libc_start_main_impl (main=0x55e8c6a0c6a0, argc=14, argv=0x7ffc0842c088, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc0842c078) at ../csu/libc-start.c:360
#53 0x000055e8c6a14f55 in ?? ()

Reported using DrKonqi

Comment 1 TraceyC 2026-01-29 11:07:11 UTC

Thanks for the bug report, and the detailed backtrace. That's helpful.

The backtrace shows the crash is with `pushbuf_dump` in `libgallium`

Please report this bug in the place where driver bugs are tracked for your GPU and the nouveau drivers.

Intel and AMD: [https://docs.mesa3d.org/bugs.html](https://docs.mesa3d.org/bugs.html)
NVIDIA: post it at [https://forums.developer.nvidia.com/c/gpu-graphics/linux](https://forums.developer.nvidia.com/c/gpu-graphics/linux); run nvidia-bug-report.sh and attach the resulting file to the report.