Bug 437166

Summary: System Settings crashed in QWaylandClientExtensionPrivate::handleRegistryGlobal() on Wayland when I added appmenu to window decoration
Product: [Plasma] kwin Reporter: Patrick Silva <bugseforuns>
Component: wayland-genericAssignee: KWin default assignee <kwin-bugs-null>
Status: RESOLVED DUPLICATE    
Severity: crash CC: kde, nate
Priority: NOR Keywords: drkonqi
Version: git master   
Target Milestone: ---   
Platform: Neon   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Patrick Silva 2021-05-15 17:14:48 UTC 
Application: systemsettings5 (5.22.80)

Qt Version: 5.15.2
Frameworks Version: 5.83.0
Operating System: Linux 5.8.0-53-generic x86_64
Windowing System: Wayland
Drkonqi Version: 5.22.80
Distribution: KDE neon Unstable Edition

-- Information about the crash:
- What I was doing when the application crashed:
added appmenu in Window Decoration KCM, System Settings crashed when I clicked on "Apply" button

The crash can be reproduced sometimes.

-- Backtrace:
Application: System Settings (systemsettings5), signal: Segmentation fault
Content of s_kcrashErrorMessage: [Current thread is 1 (Thread 0x7faa26ab68c0 (LWP 48181))]
[New LWP 48183]
[New LWP 48184]
[New LWP 48185]
[New LWP 48186]
[New LWP 48187]
[New LWP 48188]
[New LWP 48189]
[New LWP 48199]
[New LWP 48202]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007faa2b09caff in __GI___poll (fds=fds@entry=0x7ffed2d5cc58, nfds=nfds@entry=1, timeout=timeout@entry=1000) at ../sysdeps/unix/sysv/linux/poll.c:29

Thread 10 (Thread 0x7fa9f7028700 (LWP 48202)):
#0  0x00007faa2b667c81 in idleTimerSourceCheck (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:220
#1  0x00007faa290dbda1 in g_main_context_check (context=context@entry=0x7fa9f0003800, max_priority=2147483647, fds=fds@entry=0x7fa9f0009bc0, n_fds=n_fds@entry=1) at ../../../glib/gmain.c:3880
#2  0x00007faa290dc312 in g_main_context_iterate (context=context@entry=0x7fa9f0003800, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4044
#3  0x00007faa290dc4a3 in g_main_context_iteration (context=0x7fa9f0003800, may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#4  0x00007faa2b667ffb in QEventDispatcherGlib::processEvents (this=0x7fa9f0059ed0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007faa2b60c1eb in QEventLoop::exec (this=this@entry=0x7fa9f7027cc0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#6  0x00007faa2b426a52 in QThread::exec (this=this@entry=0x55f55e5e1d20) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#7  0x00007faa2a4c7fa9 in QQmlThreadPrivate::run (this=0x55f55e5e1d20) at qml/ftw/qqmlthread.cpp:155
#8  0x00007faa2b427bec in QThreadPrivate::start (arg=0x55f55e5e1d20) at thread/qthread_unix.cpp:329
#9  0x00007faa29a9d609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#10 0x00007faa2b0a9293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7faa14953700 (LWP 48199)):
#0  g_mutex_unlock (mutex=0x7fa9f8417e60) at ../../../glib/gthread-posix.c:1493
#1  0x00007faa290dbbae in g_main_context_query (context=context@entry=0x7fa9f8417e60, max_priority=2147483647, timeout=timeout@entry=0x7faa14952b84, fds=fds@entry=0x7fa9f83193f0, n_fds=n_fds@entry=1) at ../../../glib/gmain.c:3774
#2  0x00007faa290dc2e8 in g_main_context_iterate (context=context@entry=0x7fa9f8417e60, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4029
#3  0x00007faa290dc4a3 in g_main_context_iteration (context=0x7fa9f8417e60, may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#4  0x00007faa2b667ffb in QEventDispatcherGlib::processEvents (this=0x7fa9f82034b0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007faa2b60c1eb in QEventLoop::exec (this=this@entry=0x7faa14952cc0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#6  0x00007faa2b426a52 in QThread::exec (this=this@entry=0x55f55e3f7720) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#7  0x00007faa2a4c7fa9 in QQmlThreadPrivate::run (this=0x55f55e3f7720) at qml/ftw/qqmlthread.cpp:155
#8  0x00007faa2b427bec in QThreadPrivate::start (arg=0x55f55e3f7720) at thread/qthread_unix.cpp:329
#9  0x00007faa29a9d609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#10 0x00007faa2b0a9293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7faa15ce9700 (LWP 48189)):
#0  0x00007faa2b09caff in __GI___poll (fds=0x7faa04004a60, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007faa290dc36e in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7faa04004a60, timeout=<optimized out>, context=0x7faa04000c20) at ../../../glib/gmain.c:4346
#2  g_main_context_iterate (context=context@entry=0x7faa04000c20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4042
#3  0x00007faa290dc4a3 in g_main_context_iteration (context=0x7faa04000c20, may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#4  0x00007faa2b667ffb in QEventDispatcherGlib::processEvents (this=0x7faa04000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007faa2b60c1eb in QEventLoop::exec (this=this@entry=0x7faa15ce8cc0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#6  0x00007faa2b426a52 in QThread::exec (this=this@entry=0x55f550094ca0) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#7  0x00007faa2a4c7fa9 in QQmlThreadPrivate::run (this=0x55f550094ca0) at qml/ftw/qqmlthread.cpp:155
#8  0x00007faa2b427bec in QThreadPrivate::start (arg=0x55f550094ca0) at thread/qthread_unix.cpp:329
#9  0x00007faa29a9d609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#10 0x00007faa2b0a9293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7faa1d9b9700 (LWP 48188)):
#0  0x00007faa291294dd in g_mutex_lock (mutex=mutex@entry=0x7faa00000c20) at ../../../glib/gthread-posix.c:1481
#1  0x00007faa290dc331 in g_main_context_iterate (context=context@entry=0x7faa00000c20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4051
#2  0x00007faa290dc4a3 in g_main_context_iteration (context=0x7faa00000c20, may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#3  0x00007faa2b667ffb in QEventDispatcherGlib::processEvents (this=0x7faa00000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007faa2b60c1eb in QEventLoop::exec (this=this@entry=0x7faa1d9b8cc0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007faa2b426a52 in QThread::exec (this=this@entry=0x55f54fdb6900) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007faa2a4c7fa9 in QQmlThreadPrivate::run (this=0x55f54fdb6900) at qml/ftw/qqmlthread.cpp:155
#7  0x00007faa2b427bec in QThreadPrivate::start (arg=0x55f54fdb6900) at thread/qthread_unix.cpp:329
#8  0x00007faa29a9d609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007faa2b0a9293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7faa1e1ba700 (LWP 48187)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f54fa0542c) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f54fa053d8, cond=0x55f54fa05400) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f54fa05400, mutex=0x55f54fa053d8) at pthread_cond_wait.c:647
#3  0x00007faa1f717e6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007faa1f717a6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007faa29a9d609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faa2b0a9293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7faa17fff700 (LWP 48186)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f54fa05428) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f54fa053d8, cond=0x55f54fa05400) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f54fa05400, mutex=0x55f54fa053d8) at pthread_cond_wait.c:647
#3  0x00007faa1f717e6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007faa1f717a6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007faa29a9d609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faa2b0a9293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7faa1e9bb700 (LWP 48185)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f54fa05428) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f54fa053d8, cond=0x55f54fa05400) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f54fa05400, mutex=0x55f54fa053d8) at pthread_cond_wait.c:647
#3  0x00007faa1f717e6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007faa1f717a6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007faa29a9d609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faa2b0a9293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7faa1f1bc700 (LWP 48184)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f54fa05428) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f54fa053d8, cond=0x55f54fa05400) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f54fa05400, mutex=0x55f54fa053d8) at pthread_cond_wait.c:647
#3  0x00007faa1f717e6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007faa1f717a6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007faa29a9d609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007faa2b0a9293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7faa25e17700 (LWP 48183)):
#0  __GI___libc_read (nbytes=16, buf=0x7faa25e16aa0, fd=6) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=6, buf=buf@entry=0x7faa25e16aa0, nbytes=nbytes@entry=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007faa29124b2f in read (__nbytes=16, __buf=0x7faa25e16aa0, __fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#3  g_wakeup_acknowledge (wakeup=0x55f54f819dc0) at ../../../glib/gwakeup.c:210
#4  0x00007faa290dbebe in g_main_context_check (context=context@entry=0x7faa20000c20, max_priority=2147483647, fds=fds@entry=0x7faa20005240, n_fds=n_fds@entry=1) at ../../../glib/gmain.c:3825
#5  0x00007faa290dc312 in g_main_context_iterate (context=context@entry=0x7faa20000c20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4044
#6  0x00007faa290dc4a3 in g_main_context_iteration (context=0x7faa20000c20, may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#7  0x00007faa2b667ffb in QEventDispatcherGlib::processEvents (this=0x7faa20000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#8  0x00007faa2b60c1eb in QEventLoop::exec (this=this@entry=0x7faa25e16cb0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#9  0x00007faa2b426a52 in QThread::exec (this=this@entry=0x7faa2a167d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#10 0x00007faa2a0e3f4b in QDBusConnectionManager::run (this=0x7faa2a167d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:179
#11 0x00007faa2b427bec in QThreadPrivate::start (arg=0x7faa2a167d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:329
#12 0x00007faa29a9d609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#13 0x00007faa2b0a9293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7faa26ab68c0 (LWP 48181)):
[KCrash Handler]
#6  0x00007faa28daa794 in QWaylandClientExtensionPrivate::handleRegistryGlobal (data=0x55f55e7ea6c0, registry=0x55f54f7f8bc0, id=45, interface=..., version=1) at global/qwaylandclientextension.cpp:67
#7  0x00007faa28d86822 in QtWaylandClient::QWaylandDisplay::registry_global (this=<optimized out>, id=45, interface=..., version=1) at qwaylanddisplay.cpp:396
#8  0x00007faa28db4d16 in QtWayland::wl_registry::handle_global (data=0x55f54f7f6f00, object=<optimized out>, name=45, interface=0x55f55d8a3fb0 "org_kde_kwin_blur_manager", version=1) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:236
#9  0x00007faa26c88ff5 in ffi_call_unix64 () at ../src/x86/unix64.S:101
#10 0x00007faa26c8840a in ffi_call_int (cif=<optimized out>, fn=<optimized out>, rvalue=<optimized out>, avalue=<optimized out>, closure=<optimized out>) at ../src/x86/ffi64.c:669
#11 0x00007faa28d023a8 in wl_closure_invoke (closure=0x55f55d8a3ed0, flags=1, target=<optimized out>, opcode=0, data=<optimized out>) at ../src/connection.c:1018
#12 0x00007faa28cfec48 in dispatch_event (display=display@entry=0x55f54f7fb110, queue=<optimized out>) at ../src/wayland-client.c:1445
#13 0x00007faa28d0021c in dispatch_queue (queue=0x55f54f7fb1e0, display=0x55f54f7fb110) at ../src/wayland-client.c:1591
#14 wl_display_dispatch_queue_pending (display=0x55f54f7fb110, queue=0x55f54f7fb1e0) at ../src/wayland-client.c:1833
#15 0x00007faa28d00280 in wl_display_dispatch_pending (display=<optimized out>) at ../src/wayland-client.c:1896
#16 0x00007faa28d85f9f in QtWaylandClient::QWaylandDisplay::flushRequests (this=0x55f54f7f6ef0) at qwaylanddisplay.cpp:221
#17 0x00007faa2b644730 in doActivate<false> (sender=0x55f54f870cd0, signal_index=4, argv=0x7ffed2d5da00) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:395
#18 0x00007faa2b63dac7 in QMetaObject::activate (sender=sender@entry=0x55f54f870cd0, m=m@entry=0x7faa2b8a71c0 <QAbstractEventDispatcher::staticMetaObject>, local_signal_index=local_signal_index@entry=1, argv=argv@entry=0x0) at kernel/qobject.cpp:3946
#19 0x00007faa2b60a287 in QAbstractEventDispatcher::awake (this=this@entry=0x55f54f870cd0) at .moc/moc_qabstracteventdispatcher.cpp:149
#20 0x00007faa2b66801c in QEventDispatcherGlib::processEvents (this=0x55f54f870cd0, flags=...) at kernel/qeventdispatcher_glib.cpp:430
#21 0x00007faa2b60c1eb in QEventLoop::exec (this=this@entry=0x7ffed2d5db20, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#22 0x00007faa2b614394 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#23 0x000055f54e123272 in main (argc=<optimized out>, argv=<optimized out>) at ./app/main.cpp:208
[Inferior 1 (process 48181) detached]

Reported using DrKonqi
Comment 1 Nate Graham 2021-05-20 18:39:30 UTC 
Cannot reproduce.
Comment 2 David Edmundson 2021-05-20 20:56:35 UTC 
Fixed recently in QtWayland
Comment 3 Nate Graham 2021-05-20 21:23:34 UTC 
Can you add the URL for the change that fixed it or the relevant bug report?
Comment 4 Nate Graham 2021-06-08 19:15:27 UTC 

*** This bug has been marked as a duplicate of bug 437455 ***