Application: kwin_x11 (5.16.1)

Qt Version: 5.12.3
Frameworks Version: 5.59.0
Operating System: Linux 5.1.7-1-default x86_64
Distribution: "openSUSE Tumbleweed"

-- Information about the crash:
- What I was doing when the application crashed:

I used hot corner to present all windows in virtual dekstop - 34 windows of Gwenview with various photos.

The crash does not seem to be reproducible.

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fcb671eb940 (LWP 13862))]

Thread 6 (Thread 0x7fcb5edee700 (LWP 22752)):
#0  0x00007fcb6afd284e in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#1  0x00007fcb6affb4af in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fcb6afa6bdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#3  0x00007fcb6ade8751 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#4  0x00007fcb69ae4065 in  () at /usr/lib64/libQt5Qml.so.5
#5  0x00007fcb6ade98d2 in  () at /usr/lib64/libQt5Core.so.5
#6  0x00007fcb6a35bfaa in start_thread () at /lib64/libpthread.so.0
#7  0x00007fcb6c51471f in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7fcb4e538700 (LWP 13973)):
#0  0x00007fcb6a361e05 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fcb6a8731da in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007fcb6a8731fb in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007fcb6a35bfaa in start_thread () at /lib64/libpthread.so.0
#4  0x00007fcb6c51471f in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7fcb4f53a700 (LWP 13970)):
#0  0x00007fcb6a361e05 in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007fcb4f78b043 in  () at /usr/lib64/dri/i965_dri.so
#2  0x00007fcb4f78ad97 in  () at /usr/lib64/dri/i965_dri.so
#3  0x00007fcb6a35bfaa in start_thread () at /lib64/libpthread.so.0
#4  0x00007fcb6c51471f in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7fcb5e225700 (LWP 13968)):
#0  0x00007fcb6c509d96 in ppoll () at /lib64/libc.so.6
#1  0x00007fcb6aff9ec9 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fcb6affb3a4 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#3  0x00007fcb6afa6bdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fcb6ade8751 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#5  0x00007fcb69ae4065 in  () at /usr/lib64/libQt5Qml.so.5
#6  0x00007fcb6ade98d2 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007fcb6a35bfaa in start_thread () at /lib64/libpthread.so.0
#8  0x00007fcb6c51471f in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7fcb5ffff700 (LWP 13883)):
#0  0x00007fcb6c509d96 in ppoll () at /lib64/libc.so.6
#1  0x00007fcb6aff9ec9 in qt_safe_poll(pollfd*, unsigned long, timespec const*) () at /usr/lib64/libQt5Core.so.5
#2  0x00007fcb6affb3a4 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#3  0x00007fcb6afa6bdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007fcb6ade8751 in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#5  0x00007fcb6950e4e6 in  () at /usr/lib64/libQt5DBus.so.5
#6  0x00007fcb6ade98d2 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007fcb6a35bfaa in start_thread () at /lib64/libpthread.so.0
#8  0x00007fcb6c51471f in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7fcb671eb940 (LWP 13862)):
[KCrash Handler]
#6  0x00007fcb6c20dcd4 in std::__find_if<int const*, __gnu_cxx::__ops::_Iter_equals_val<int const> >(int const*, int const*, __gnu_cxx::__ops::_Iter_equals_val<int const>, std::random_access_iterator_tag) (__pred=..., __last=0x15bbe90be2a94, __first=0x15bbe8d693d10) at /usr/include/c++/9/bits/predefined_ops.h:240
#7  0x00007fcb6c20dcd4 in std::__find_if<int const*, __gnu_cxx::__ops::_Iter_equals_val<int const> >(int const*, int const*, __gnu_cxx::__ops::_Iter_equals_val<int const>) (__pred=..., __last=0x15bbe90be2a94, __first=<optimized out>) at /usr/include/c++/9/bits/stl_algo.h:161
#8  0x00007fcb6c20dcd4 in std::find<int const*, int>(int const*, int const*, int const&) (__val=@0x7ffcc6f19a68: 6, __last=0x15bbe90be2a94, __first=<optimized out>) at /usr/include/c++/9/bits/stl_algo.h:3889
#9  0x00007fcb6c20dcd4 in QVector<int>::contains(int const&) const (t=t@entry=@0x7ffcc6f19a68: 6, this=<optimized out>) at /usr/include/qt5/QtCore/qvector.h:937
#10 0x00007fcb6c2120cf in KWin::Workspace::workspaceEvent(xcb_generic_event_t*) (this=0x55808c8757c0, e=0x7fcb600374a0) at /usr/src/debug/kwin5-5.16.1-1.1.x86_64/x11eventfilter.h:51
#11 0x00007fcb6afa5aa7 in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) () at /usr/lib64/libQt5Core.so.5
#12 0x00007fcb6536a951 in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) () at /usr/lib64/libQt5XcbQpa.so.5
#13 0x00007fcb6536b8fa in QXcbConnection::processXcbEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5XcbQpa.so.5
#14 0x00007fcb6539616c in  () at /usr/lib64/libQt5XcbQpa.so.5
#15 0x00007fcb6afa6bdb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#16 0x00007fcb6afae5c2 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#17 0x00007fcb6c5e4d45 in kdemain(int, char**) (argc=<optimized out>, argv=0x7ffcc6f19f68) at /usr/src/debug/kwin5-5.16.1-1.1.x86_64/main_x11.cpp:470
#18 0x00007fcb6c43dbcb in __libc_start_main () at /lib64/libc.so.6
#19 0x000055808bf3008a in _start () at ../sysdeps/x86_64/start.S:120
[Inferior 1 (process 13862) detached]

The reporter indicates this bug may be a duplicate of or related to bug 401590.

Possible duplicates by query: bug 401590, bug 398977.

Reported using DrKonqi