https://bugs.kde.org/show_bug.cgi?id=403601
tai133 changed:
What|Removed |Added
Status|NEEDSINFO |REPORTED
Resolution|BACKTRACE |---
--- Comment #3 from tai133 ---
This VM was working without incident when I stopped using it after creating an
updated guest in Kubuntu 18.04. Occasionally I still start the old machine to
extract some data. Generally I apply any updates which are pending on the old
16.04 machine. Since the initial report, I get a kwin error every time it
starts. No such problems occur on the replacement 18.04 VM.
This is today's backtrace:
Application: KWin (kwin_x11), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
pthread_cond_wait@@GLIBC_2.3.2 () at
../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
[Current thread is 1 (Thread 0x7fb3b9b1a940 (LWP 2690))]
Thread 5 (Thread 0x7fb38f5ef700 (LWP 2791)):
[KCrash Handler]
#6 0x7fb3b9549428 in __GI_raise (sig=sig@entry=6) at
../sysdeps/unix/sysv/linux/raise.c:54
#7 0x7fb3b954b02a in __GI_abort () at abort.c:89
#8 0x7fb3b7241f41 in QMessageLogger::fatal(char const*, ...) const () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9 0x7fb39e58d1b4 in ?? () from
/usr/lib/x86_64-linux-gnu/qt5/plugins/org.kde.kwin.platforms/KWinX11Platform.so
#10 0x7fb3b745bc24 in QMetaObject::activate(QObject*, int, int, void**) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x7fb3b74680b8 in QTimer::timerEvent(QTimerEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x7fb3b745c6d3 in QObject::event(QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x7fb3b7d64afc in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x7fb3b7d6a036 in QApplication::notify(QObject*, QEvent*) () from
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x7fb3b742f2a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x7fb3b748324e in QTimerInfoList::activateTimers() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x7fb3b7481b04 in
QEventDispatcherUNIX::processEvents(QFlags) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x7fb3b742cffa in
QEventLoop::exec(QFlags) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x7fb3b72559e4 in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x7fb3b725a808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x7fb3b32cb6ba in start_thread (arg=0x7fb38f5ef700) at
pthread_create.c:333
#22 0x7fb3b961b41d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 4 (Thread 0x7fb39d1f0700 (LWP 2780)):
#0 0x7fb3b7252949 in QMutex::lock() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1 0x7fb3b7430f5c in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x7fb3b7481a02 in
QEventDispatcherUNIX::processEvents(QFlags) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x7fb3b742cffa in
QEventLoop::exec(QFlags) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x7fb3b72559e4 in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x7fb3b24256b5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#6 0x7fb3b725a808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7 0x7fb3b32cb6ba in start_thread (arg=0x7fb39d1f0700) at
pthread_create.c:333
#8 0x7fb3b961b41d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 3 (Thread 0x7fb39efac700 (LWP 2750)):
#0 0x7fb3b96115d3 in select () at ../sysdeps/unix/syscall-template.S:84
#1 0x7fb3b747fbcf in qt_safe_select(int, fd_set*, fd_set*, fd_set*,
timespec const*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2 0x7fb3b748160e in
QEventDispatcherUNIXPrivate::doSelect(QFlags,
timespec*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3 0x7fb3b7481b22 in
QEventDispatcherUNIX::processEvents(QFlags) ()
from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4 0x7fb3b742cffa in
QEventLoop::exec(QFlags) () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5 0x7fb3b72559e4 in QThread::exec() () from
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6 0x7fb3b9c42515 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7 0x7fb3b725a808 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8 0x7fb3b32cb6ba in start_thread (arg=0x7fb39efac700) at
pthread_create.c:333
#9 0x7fb3b961b41d in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:109
Thread 2 (Thread 0x7fb3a0aa4700 (LWP 2734)):
#0 0x7fb3b960f74d in poll () at ../sysdeps/unix/syscall-template.S:84
#1 0x7fb3b8774c62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
