https://bugs.kde.org/show_bug.cgi?id=416566
Bug ID: 416566
Summary: kded5 segmentation faults in
KWayland::Client::OutputManagement::createConfiguratio
n when logging into Plasma 5.17.90 on Wayland
Product: frameworks-kded
Version: 5.66.0
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: general
Assignee: fa...@kde.org
Reporter: matthew.fagn...@utoronto.ca
CC: kdelibs-b...@kde.org
Target Milestone: ---
SUMMARY
I logged into Plasma 5.17.90 on Wayland in Fedora Rawhide with KF5 5.66.0, Qt
5.13.2. Dr. Konqi immediately showed a segmentation fault in kded5 in
KWayland::Client::OutputManagement::createConfiguration(QObject*) (this=0x0,
parent=<optimized out>) at
/usr/src/debug/kf5-kwayland-5.66.0-1.fc32.x86_64/x86_64-redhat-linux-gnu/src/client/wayland-output-management-client-protocol.h:226.
this=0x0 might indicate a problem with a null pointer.
Application: kded5 (kded5), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
29 return SYSCALL_CANCEL (poll, fds, nfds, timeout);
[Current thread is 1 (Thread 0x7f1fa8b4d800 (LWP 1350))]
Thread 5 (Thread 0x7f1f8e23f700 (LWP 1381)):
#0 0x00007f1fa7c269af in __GI___poll (fds=0x55d0cbdf2490, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007f1fa6df9e1e in g_main_context_poll (priority=<optimized out>,
n_fds=1, fds=0x55d0cbdf2490, timeout=<optimized out>, context=0x55d0cbe13540)
at ../glib/gmain.c:4309
#2 g_main_context_iterate (context=context@entry=0x55d0cbe13540,
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at
../glib/gmain.c:4005
#3 0x00007f1fa6df9f53 in g_main_context_iteration (context=0x55d0cbe13540,
may_block=1) at ../glib/gmain.c:4071
#4 0x00007f1f8e252abd in dconf_gdbus_worker_thread () at
/usr/lib64/gio/modules/libdconfsettings.so
#5 0x00007f1fa6e23682 in g_thread_proxy (data=0x55d0cbdcfd40) at
../glib/gthread.c:805
#6 0x00007f1fa7781482 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7 0x00007f1fa7c31583 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 4 (Thread 0x7f1f8ffff700 (LWP 1372)):
#0 __GI___libc_read (nbytes=16, buf=0x7f1f8fffecc0, fd=15) at
../sysdeps/unix/sysv/linux/read.c:26
#1 __GI___libc_read (fd=15, buf=buf@entry=0x7f1f8fffecc0,
nbytes=nbytes@entry=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2 0x00007f1fa6e422cf in read (__nbytes=16, __buf=0x7f1f8fffecc0,
__fd=<optimized out>) at /usr/include/bits/unistd.h:44
#3 g_wakeup_acknowledge (wakeup=0x55d0cbddac60) at ../glib/gwakeup.c:210
#4 0x00007f1fa6df9967 in g_main_context_check
(context=context@entry=0x55d0cbde00e0, max_priority=2147483647,
fds=fds@entry=0x55d0cbde1f80, n_fds=n_fds@entry=1) at ../glib/gmain.c:3788
#5 0x00007f1fa6df9dc2 in g_main_context_iterate (context=0x55d0cbde00e0,
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at
../glib/gmain.c:4007
#6 0x00007f1fa6dfa1a3 in g_main_loop_run (loop=0x55d0cbde01d0) at
../glib/gmain.c:4204
#7 0x00007f1f94f75b7a in gdbus_shared_thread_func (user_data=0x55d0cbde00b0)
at ../gio/gdbusprivate.c:279
#8 0x00007f1fa6e23682 in g_thread_proxy (data=0x55d0cbdcf4a0) at
../glib/gthread.c:805
#9 0x00007f1fa7781482 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#10 0x00007f1fa7c31583 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 3 (Thread 0x7f1f949bf700 (LWP 1371)):
#0 0x00007f1fa7c269af in __GI___poll (fds=0x55d0cbdcd9e0, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007f1fa6df9e1e in g_main_context_poll (priority=<optimized out>,
n_fds=1, fds=0x55d0cbdcd9e0, timeout=<optimized out>, context=0x55d0cbdcf2b0)
at ../glib/gmain.c:4309
#2 g_main_context_iterate (context=context@entry=0x55d0cbdcf2b0,
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at
../glib/gmain.c:4005
#3 0x00007f1fa6df9f53 in g_main_context_iteration (context=0x55d0cbdcf2b0,
may_block=may_block@entry=1) at ../glib/gmain.c:4071
#4 0x00007f1fa6df9fa1 in glib_worker_main (data=<optimized out>) at
../glib/gmain.c:5959
#5 0x00007f1fa6e23682 in g_thread_proxy (data=0x55d0cbdcf400) at
../glib/gthread.c:805
#6 0x00007f1fa7781482 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7 0x00007f1fa7c31583 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 2 (Thread 0x7f1f95a87700 (LWP 1364)):
#0 0x00007f1fa7c269af in __GI___poll (fds=0x7f1f900029e0, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1 0x00007f1fa6df9e1e in g_main_context_poll (priority=<optimized out>,
n_fds=1, fds=0x7f1f900029e0, timeout=<optimized out>, context=0x7f1f90000c30)
at ../glib/gmain.c:4309
#2 g_main_context_iterate (context=context@entry=0x7f1f90000c30,
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at
../glib/gmain.c:4005
#3 0x00007f1fa6df9f53 in g_main_context_iteration (context=0x7f1f90000c30,
may_block=may_block@entry=1) at ../glib/gmain.c:4071
#4 0x00007f1fa81c58b3 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f1f90000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5 0x00007f1fa816f24b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f1f95a86d70, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#6 0x00007f1fa7fbfc75 in QThread::exec() (this=this@entry=0x7f1fa8583060
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#7 0x00007f1fa84fff6a in QDBusConnectionManager::run() (this=0x7f1fa8583060
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
qdbusconnection.cpp:178
#8 0x00007f1fa7fc0dc6 in QThreadPrivate::start(void*) (arg=0x7f1fa8583060
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
thread/qthread_unix.cpp:360
#9 0x00007f1fa7781482 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#10 0x00007f1fa7c31583 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
Thread 1 (Thread 0x7f1fa8b4d800 (LWP 1350)):
[KCrash Handler]
#6 KWayland::Client::OutputManagement::createConfiguration(QObject*)
(this=0x0, parent=<optimized out>) at
/usr/src/debug/kf5-kwayland-5.66.0-1.fc32.x86_64/x86_64-redhat-linux-gnu/src/client/wayland-output-management-client-protocol.h:226
#7 0x00007f1f8d4a5833 in
KScreen::WaylandConfig::applyConfig(QSharedPointer<KScreen::Config> const&)
(this=0x55d0cbd217e0, newConfig=...) at
/usr/src/debug/libkscreen-qt5-5.17.90-2.fc32.x86_64/backends/kwayland/waylandconfig.cpp:330
#8 0x00007f1f8d914a83 in KScreen::SetConfigOperation::start()
(this=0x55d0cbede330) at
/usr/src/debug/libkscreen-qt5-5.17.90-2.fc32.x86_64/src/setconfigoperation.cpp:129
#9 0x00007f1fa819b80a in QObject::event(QEvent*) (this=0x55d0cbede330,
e=<optimized out>) at kernel/qobject.cpp:1260
#10 0x00007f1fa8d97ab6 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
(this=this@entry=0x55d0cbc50390, receiver=receiver@entry=0x55d0cbede330,
e=e@entry=0x55d0cbec9ed0) at kernel/qapplication.cpp:3703
#11 0x00007f1fa8da1150 in QApplication::notify(QObject*, QEvent*)
(this=0x7ffdfeb87f20, receiver=0x55d0cbede330, e=0x55d0cbec9ed0) at
kernel/qapplication.cpp:3449
#12 0x00007f1fa8170458 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
(receiver=0x55d0cbede330, event=0x55d0cbec9ed0) at
kernel/qcoreapplication.cpp:1095
#13 0x00007f1fa817349b in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) (receiver=0x0, event_type=0, data=0x55d0cbc50510) at
kernel/qcoreapplication.cpp:1840
#14 0x00007f1fa81c5b07 in postEventSourceDispatch(GSource*, GSourceFunc,
gpointer) (s=s@entry=0x55d0cbc88460) at kernel/qeventdispatcher_glib.cpp:277
#15 0x00007f1fa6df9b20 in g_main_dispatch (context=0x55d0cbc53b90) at
../glib/gmain.c:3272
#16 g_main_context_dispatch (context=context@entry=0x55d0cbc53b90) at
../glib/gmain.c:3937
#17 0x00007f1fa6df9eb0 in g_main_context_iterate
(context=context@entry=0x55d0cbc53b90, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4010
#18 0x00007f1fa6df9f53 in g_main_context_iteration (context=0x55d0cbc53b90,
may_block=may_block@entry=1) at ../glib/gmain.c:4071
#19 0x00007f1fa81c5895 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x55d0cbc7adb0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#20 0x00007f1fa816f24b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7ffdfeb87e60, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:140
#21 0x00007f1fa8177126 in QCoreApplication::exec() () at
../../include/QtCore/../../src/corelib/global/qflags.h:120
#22 0x000055d0cb748bf2 in main(int, char**) (argc=<optimized out>,
argv=<optimized out>) at
/usr/src/debug/kf5-kded-5.66.0-1.fc32.x86_64/src/kded.cpp:804
[Inferior 1 (process 1350) detached]
STEPS TO REPRODUCE
1. Boot Fedora Rawhide KDE Plasma spin fully updated with kwin-wayland,
plasma-workspaces-wayland and their dependencies installed
2. Log in to Plasma on Wayland
3. Update to Plasma 5.17.90 from koji or the repository when available
4. Reboot/log out
5. Log in to Plasma 5.17.90 on Wayland
OBSERVED RESULT
kded5 segmentation faults in
KWayland::Client::OutputManagement::createConfiguration when logging into
Plasma 5.17.90 on Wayland
EXPECTED RESULT
No crashes would happen.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora Rawhide/32
(available in About System)
KDE Plasma Version: 5.17.90
KDE Frameworks Version: 5.66.0
Qt Version: 5.13.2
ADDITIONAL INFORMATION
I've seen this kded5 segmentation fault 2/3 logins to Plasma 5.17.90. I haven't
seen this crash with 5.17.5 or earlier. The following notification was shown
3/3 times I've logged into Plasma 5.17.90. I don't know if the notification was
related to the kded5 crashes.
Error loading QML file:
file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/main.qml:108:37:
Type CompactRepresentation unavailable
file:///usr/share/plasma/plasmoids/org.kde.plasma.notifications/contents/ui/CompactRepresentation.qml:27:1:
module "org.kde.quickcharts" is not installed
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