Bug 414233

Application: kwin_x11 (5.17.2)

Qt Version: 5.13.1
Frameworks Version: 5.63.0
Operating System: Linux 5.3.11-050311-generic x86_64
Distribution: KDE neon User Edition 5.17

-- Information about the crash:
- What I was doing when the application crashed:
Testing connection to a remote database using MySQL Workbench

- Unusual behavior I noticed:
The "Setup New Connection" window freezed

- Custom settings of the application:

-- Backtrace:
Application: KWin (kwin_x11), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f6978d42880 (LWP 7352))]

Thread 11 (Thread 0x7f68a2ae8700 (LWP 8329)):
#0  0x00007f69715fd9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x561d6f961610) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f69715fd9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x561d6f9615c0, cond=0x561d6f9615e8) at pthread_cond_wait.c:502
#2  0x00007f69715fd9f3 in __pthread_cond_wait (cond=0x561d6f9615e8, mutex=0x561d6f9615c0) at pthread_cond_wait.c:655
#3  0x00007f69759acb0b in QWaitConditionPrivate::wait(QDeadlineTimer) (deadline=..., this=0x561d6f9615c0) at thread/qwaitcondition_unix.cpp:146
#4  0x00007f69759acb0b in QWaitCondition::wait(QMutex*, QDeadlineTimer) (this=<optimized out>, mutex=0x7f695806a650, deadline=...) at thread/qwaitcondition_unix.cpp:225
#5  0x00007f69759ace19 in QWaitCondition::wait(QMutex*, unsigned long) (this=0x7f695806a658, mutex=0x7f695806a650, time=<optimized out>) at thread/qwaitcondition_unix.cpp:208
#6  0x00007f6970787ec8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f69707882fa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f69759a5b72 in QThreadPrivate::start(void*) (arg=0x7f695806a5d0) at thread/qthread_unix.cpp:360
#9  0x00007f69715f76db in start_thread (arg=0x7f68a2ae8700) at pthread_create.c:463
#10 0x00007f69786ab88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f689a872700 (LWP 8101)):
#0  0x00007f69715fd9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x561d6f4507c4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f69715fd9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x561d6f450770, cond=0x561d6f450798) at pthread_cond_wait.c:502
#2  0x00007f69715fd9f3 in __pthread_cond_wait (cond=0x561d6f450798, mutex=0x561d6f450770) at pthread_cond_wait.c:655
#3  0x00007f69759acb0b in QWaitConditionPrivate::wait(QDeadlineTimer) (deadline=..., this=0x561d6f450770) at thread/qwaitcondition_unix.cpp:146
#4  0x00007f69759acb0b in QWaitCondition::wait(QMutex*, QDeadlineTimer) (this=<optimized out>, mutex=0x561d6f6758c0, deadline=...) at thread/qwaitcondition_unix.cpp:225
#5  0x00007f69759ace19 in QWaitCondition::wait(QMutex*, unsigned long) (this=0x561d6f6758c8, mutex=0x561d6f6758c0, time=<optimized out>) at thread/qwaitcondition_unix.cpp:208
#6  0x00007f6970787ec8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f69707882fa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f69759a5b72 in QThreadPrivate::start(void*) (arg=0x561d6f675840) at thread/qthread_unix.cpp:360
#9  0x00007f69715f76db in start_thread (arg=0x7f689a872700) at pthread_create.c:463
#10 0x00007f69786ab88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f689c824700 (LWP 8099)):
#0  0x00007f697869ecf6 in __GI_ppoll (fds=fds@entry=0x7f6940000f78, nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f6975be46e1 in ppoll (__ss=<optimized out>, __timeout=<optimized out>, __nfds=<optimized out>, __fds=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/poll2.h:77
#2  0x00007f6975be46e1 in qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f6940000f78) at kernel/qcore_unix.cpp:132
#3  0x00007f6975be46e1 in qt_safe_poll(pollfd*, unsigned long, timespec const*) (fds=0x7f6940000f78, nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:153
#4  0x00007f6975be5e78 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:500
#5  0x00007f6975b88eaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f689c823d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#6  0x00007f69759a43ca in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:531
#7  0x00007f6970002cb5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f69759a5b72 in QThreadPrivate::start(void*) (arg=0x7f6958066260) at thread/qthread_unix.cpp:360
#9  0x00007f69715f76db in start_thread (arg=0x7f689c824700) at pthread_create.c:463
#10 0x00007f69786ab88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f694916c700 (LWP 4427)):
#0  0x00007f697869ecf6 in __GI_ppoll (fds=fds@entry=0x7f693001e878, nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f6975be46e1 in ppoll (__ss=<optimized out>, __timeout=<optimized out>, __nfds=<optimized out>, __fds=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/poll2.h:77
#2  0x00007f6975be46e1 in qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f693001e878) at kernel/qcore_unix.cpp:132
#3  0x00007f6975be46e1 in qt_safe_poll(pollfd*, unsigned long, timespec const*) (fds=0x7f693001e878, nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:153
#4  0x00007f6975be5e78 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:500
#5  0x00007f6975b88eaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f694916bd00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#6  0x00007f69759a43ca in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:531
#7  0x00007f6970002cb5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f69759a5b72 in QThreadPrivate::start(void*) (arg=0x561d6e4184c0) at thread/qthread_unix.cpp:360
#9  0x00007f69715f76db in start_thread (arg=0x7f694916c700) at pthread_create.c:463
#10 0x00007f69786ab88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f69573dd700 (LWP 13854)):
#0  0x00007f69715fd9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x561d6dd3c210) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f69715fd9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x561d6dd3c1c0, cond=0x561d6dd3c1e8) at pthread_cond_wait.c:502
#2  0x00007f69715fd9f3 in __pthread_cond_wait (cond=0x561d6dd3c1e8, mutex=0x561d6dd3c1c0) at pthread_cond_wait.c:655
#3  0x00007f69759acb0b in QWaitConditionPrivate::wait(QDeadlineTimer) (deadline=..., this=0x561d6dd3c1c0) at thread/qwaitcondition_unix.cpp:146
#4  0x00007f69759acb0b in QWaitCondition::wait(QMutex*, QDeadlineTimer) (this=<optimized out>, mutex=0x561d6e1827a0, deadline=...) at thread/qwaitcondition_unix.cpp:225
#5  0x00007f69759ace19 in QWaitCondition::wait(QMutex*, unsigned long) (this=0x561d6e1827a8, mutex=0x561d6e1827a0, time=<optimized out>) at thread/qwaitcondition_unix.cpp:208
#6  0x00007f6970787ec8 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#7  0x00007f69707882fa in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#8  0x00007f69759a5b72 in QThreadPrivate::start(void*) (arg=0x561d6e182720) at thread/qthread_unix.cpp:360
#9  0x00007f69715f76db in start_thread (arg=0x7f69573dd700) at pthread_create.c:463
#10 0x00007f69786ab88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f6954d73700 (LWP 8469)):
#0  0x00007f69715fd9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f6974df5fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f69715fd9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f6974df5f68, cond=0x7f6974df5f90) at pthread_cond_wait.c:502
#2  0x00007f69715fd9f3 in __pthread_cond_wait (cond=0x7f6974df5f90, mutex=0x7f6974df5f68) at pthread_cond_wait.c:655
#3  0x00007f6974b00874 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f6974b008b9 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f69715f76db in start_thread (arg=0x7f6954d73700) at pthread_create.c:463
#6  0x00007f69786ab88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f694996d700 (LWP 8243)):
#0  0x00007f69715fd9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x561d6dd5676c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f69715fd9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x561d6dd56718, cond=0x561d6dd56740) at pthread_cond_wait.c:502
#2  0x00007f69715fd9f3 in __pthread_cond_wait (cond=0x561d6dd56740, mutex=0x561d6dd56718) at pthread_cond_wait.c:655
#3  0x00007f694a53f2cb in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f694a53eff7 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f69715f76db in start_thread (arg=0x7f694996d700) at pthread_create.c:463
#6  0x00007f69786ab88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f69561dd700 (LWP 8165)):
#0  0x00007f697869ecf6 in __GI_ppoll (fds=fds@entry=0x7f6944000d28, nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f6975be46e1 in ppoll (__ss=<optimized out>, __timeout=<optimized out>, __nfds=<optimized out>, __fds=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/poll2.h:77
#2  0x00007f6975be46e1 in qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f6944000d28) at kernel/qcore_unix.cpp:132
#3  0x00007f6975be46e1 in qt_safe_poll(pollfd*, unsigned long, timespec const*) (fds=0x7f6944000d28, nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:153
#4  0x00007f6975be5e78 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:500
#5  0x00007f6975b88eaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f69561dcd00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#6  0x00007f69759a43ca in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:531
#7  0x00007f6970002cb5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#8  0x00007f69759a5b72 in QThreadPrivate::start(void*) (arg=0x561d6dc0d740) at thread/qthread_unix.cpp:360
#9  0x00007f69715f76db in start_thread (arg=0x7f69561dd700) at pthread_create.c:463
#10 0x00007f69786ab88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f695d3c4700 (LWP 7448)):
#0  0x00007f697869ecf6 in __GI_ppoll (fds=fds@entry=0x7f695000b7c8, nfds=nfds@entry=1, timeout=<optimized out>, timeout@entry=0x0, sigmask=sigmask@entry=0x0) at ../sysdeps/unix/sysv/linux/ppoll.c:39
#1  0x00007f6975be46e1 in ppoll (__ss=<optimized out>, __timeout=<optimized out>, __nfds=<optimized out>, __fds=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/poll2.h:77
#2  0x00007f6975be46e1 in qt_ppoll (timeout_ts=0x0, nfds=1, fds=0x7f695000b7c8) at kernel/qcore_unix.cpp:132
#3  0x00007f6975be46e1 in qt_safe_poll(pollfd*, unsigned long, timespec const*) (fds=0x7f695000b7c8, nfds=1, timeout_ts=timeout_ts@entry=0x0) at kernel/qcore_unix.cpp:153
#4  0x00007f6975be5e78 in QEventDispatcherUNIX::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=<optimized out>, flags=...) at kernel/qeventdispatcher_unix.cpp:500
#5  0x00007f6975b88eaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f695d3c3cf0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#6  0x00007f69759a43ca in QThread::exec() (this=<optimized out>) at thread/qthread.cpp:531
#7  0x00007f696ebd00e5 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007f69759a5b72 in QThreadPrivate::start(void*) (arg=0x7f696ee47d80) at thread/qthread_unix.cpp:360
#9  0x00007f69715f76db in start_thread (arg=0x7f695d3c4700) at pthread_create.c:463
#10 0x00007f69786ab88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f695f898700 (LWP 7394)):
#0  0x00007f697869ebf9 in __GI___poll (fds=0x7f695f897c28, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f69756de747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f69756e036a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f6960bd1f00 in QXcbEventQueue::run() (this=0x561d6d9a3f20) at qxcbeventqueue.cpp:228
#4  0x00007f69759a5b72 in QThreadPrivate::start(void*) (arg=0x561d6d9a3f20) at thread/qthread_unix.cpp:360
#5  0x00007f69715f76db in start_thread (arg=0x7f695f898700) at pthread_create.c:463
#6  0x00007f69786ab88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f6978d42880 (LWP 7352)):
[KCrash Handler]
#6  0x0000561d6fb84950 in  ()
#7  0x00007f697817b9fa in KWin::Workspace::workspaceEvent(xcb_generic_event_t*) () at /usr/lib/x86_64-linux-gnu/libkwin.so.5
#8  0x00007f6975b8755f in QAbstractEventDispatcher::filterNativeEvent(QByteArray const&, void*, long*) (this=<optimized out>, eventType=..., message=message@entry=0x7f69580ecb60, result=result@entry=0x7ffc5a4acdf8) at kernel/qabstracteventdispatcher.cpp:484
#9  0x00007f6960badcec in QXcbConnection::handleXcbEvent(xcb_generic_event_t*) (this=this@entry=0x561d6d9aad20, event=event@entry=0x7f69580ecb60) at qxcbconnection.cpp:542
#10 0x00007f6960bae816 in QXcbConnection::processXcbEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x561d6d9aad20, flags=...) at qxcbconnection.cpp:1021
#11 0x00007f6960bd325c in QXcbUnixEventDispatcher::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x561d6d9fd680, flags=...) at qxcbeventdispatcher.cpp:61
#12 0x00007f6975b88eaa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffc5a4acf50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#13 0x00007f6975b92220 in QCoreApplication::exec() () at kernel/qcoreapplication.cpp:1403
#14 0x00007f6978983d05 in kdemain () at /usr/lib/x86_64-linux-gnu/libkdeinit5_kwin_x11.so
#15 0x00007f69785abb97 in __libc_start_main (main=0x561d6c949720, argc=1, argv=0x7ffc5a4ad1e8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc5a4ad1d8) at ../csu/libc-start.c:310
#16 0x0000561d6c94975a in _start ()

Possible duplicates by query: bug 414229, bug 414199, bug 414147, bug 413997, bug 413976.

Reported using DrKonqi