Bug 385895

Summary: Crash when scrolling through tabs
Product: [Applications] kdevelop Reporter: Christoph Roick <chrisito>
Component: generalAssignee: kdevelop-bugs-null
Status: RESOLVED WORKSFORME    
Severity: crash Keywords: drkonqi
Priority: NOR    
Version First Reported In: 5.1.80   
Target Milestone: ---   
Platform: Compiled Sources   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Christoph Roick 2017-10-18 07:50:53 UTC 
Application: kdevelop (5.1.80)
 (Compiled from sources)
Qt Version: 5.9.2
Frameworks Version: 5.39.0
Operating System: Linux 4.13.7-2-ck x86_64
Distribution (Platform): Archlinux Packages

-- Information about the crash:
- What I was doing when the application crashed:
Quickly scrolling through tabs of opened documents (20 or so opened at the same time)
- Unusual behavior I noticed:
Maybe it is related to a class which derives from a std::vector and does not have correct highlighting. Cannot be reproduced when running kdevelop with gdb, so looks like a race condition.

The crash can be reproduced sometimes.

-- Backtrace:
Application: KDevelop (kdevelop), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff7e46c20c0 (LWP 3337))]

Thread 14 (Thread 0x7ff74f7fe700 (LWP 3910)):
#0  0x00007ff7d89004ed in  () at /usr/lib/libglib-2.0.so.0
#1  0x00007ff7d890169b in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff7d8901df6 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff7d8901fae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007ff7e1d33cf4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff7e1cd748b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007ff7e1af027e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007ff7e1af4fcb in  () at /usr/lib/libQt5Core.so.5
#8  0x00007ff7daac908a in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007ff7e140124f in clone () at /usr/lib/libc.so.6

Thread 13 (Thread 0x7ff74ffff700 (LWP 3859)):
#0  0x00007ff7d8929664 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007ff7d8901761 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff7d8901df6 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff7d8901fae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007ff7e1d33cf4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff7e1cd748b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007ff7e1af027e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007ff7705eec1a in  () at /usr/lib/qt/qml/QtQuick/XmlListModel/libqmlxmllistmodelplugin.so
#8  0x00007ff7e1af4fcb in  () at /usr/lib/libQt5Core.so.5
#9  0x00007ff7daac908a in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007ff7e140124f in clone () at /usr/lib/libc.so.6

Thread 12 (Thread 0x7ff772ffd700 (LWP 3610)):
#0  0x00007ff7daacf38d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff7e1af645c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007ff7d5ee742f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007ff7d5eec4d9 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007ff7d5ee6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007ff7d5eec532 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007ff7d5ee6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007ff7d5eec532 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007ff7d5ee6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007ff7d5eec532 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007ff7d5ee6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007ff7d5eec532 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007ff7d5ee6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007ff7d5eec532 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007ff7d5ee6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#15 0x00007ff7d5eec532 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#16 0x00007ff7d5ee6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#17 0x00007ff7d5eec532 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#18 0x00007ff7d5ee6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#19 0x00007ff7d5ee9ce3 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#20 0x00007ff7e1af4fcb in  () at /usr/lib/libQt5Core.so.5
#21 0x00007ff7daac908a in start_thread () at /usr/lib/libpthread.so.0
#22 0x00007ff7e140124f in clone () at /usr/lib/libc.so.6

Thread 11 (Thread 0x7ff7737fe700 (LWP 3609)):
#0  0x00007ff7daacf38d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff7e1af645c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007ff7d5ee742f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007ff7d5eec4d9 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007ff7d5ee6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007ff7d5eec532 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007ff7d5ee6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007ff7d5eec532 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007ff7d5ee6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007ff7d5eec532 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007ff7d5ee6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007ff7d5eec532 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007ff7d5ee6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#13 0x00007ff7d5ee9ce3 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#14 0x00007ff7e1af4fcb in  () at /usr/lib/libQt5Core.so.5
#15 0x00007ff7daac908a in start_thread () at /usr/lib/libpthread.so.0
#16 0x00007ff7e140124f in clone () at /usr/lib/libc.so.6

Thread 10 (Thread 0x7ff773fff700 (LWP 3608)):
#0  0x00007ff7daacf38d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff7e1af645c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007ff7d5ee742f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007ff7d5eec4d9 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007ff7d5ee6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007ff7d5eec532 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007ff7d5ee6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007ff7d5eec532 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007ff7d5ee6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#9  0x00007ff7d5eec532 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#10 0x00007ff7d5ee6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#11 0x00007ff7d5ee9ce3 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#12 0x00007ff7e1af4fcb in  () at /usr/lib/libQt5Core.so.5
#13 0x00007ff7daac908a in start_thread () at /usr/lib/libpthread.so.0
#14 0x00007ff7e140124f in clone () at /usr/lib/libc.so.6

Thread 9 (Thread 0x7ff7848b2700 (LWP 3607)):
[KCrash Handler]
#5  0x0000000000000031 in  ()
#6  0x00007ff7df6422b3 in KDevelop::CodeHighlighting::attributeForType(KDevelop::HighlightingEnumContainer::Types, KDevelop::HighlightingEnumContainer::Contexts, QColor const&) const () at /usr/lib/libKDevPlatformLanguage.so.52
#7  0x00007ff7df64258a in KDevelop::CodeHighlightingInstance::highlightUse(KDevelop::DUContext*, int, QColor const&) () at /usr/lib/libKDevPlatformLanguage.so.52
#8  0x00007ff7df6433ca in KDevelop::CodeHighlightingInstance::highlightDUChain(KDevelop::DUContext*, QHash<KDevelop::Declaration*, unsigned int>, QVector<KDevelop::Declaration*>) () at /usr/lib/libKDevPlatformLanguage.so.52
#9  0x00007ff7df6434a3 in KDevelop::CodeHighlightingInstance::highlightDUChain(KDevelop::DUContext*, QHash<KDevelop::Declaration*, unsigned int>, QVector<KDevelop::Declaration*>) () at /usr/lib/libKDevPlatformLanguage.so.52
#10 0x00007ff7df6434a3 in KDevelop::CodeHighlightingInstance::highlightDUChain(KDevelop::DUContext*, QHash<KDevelop::Declaration*, unsigned int>, QVector<KDevelop::Declaration*>) () at /usr/lib/libKDevPlatformLanguage.so.52
#11 0x00007ff7df6434a3 in KDevelop::CodeHighlightingInstance::highlightDUChain(KDevelop::DUContext*, QHash<KDevelop::Declaration*, unsigned int>, QVector<KDevelop::Declaration*>) () at /usr/lib/libKDevPlatformLanguage.so.52
#12 0x00007ff7df643ca1 in KDevelop::CodeHighlightingInstance::highlightDUChain(KDevelop::TopDUContext*) () at /usr/lib/libKDevPlatformLanguage.so.52
#13 0x00007ff7df644df3 in KDevelop::CodeHighlighting::highlightDUChain(KDevelop::ReferencedTopDUContext) () at /usr/lib/libKDevPlatformLanguage.so.52
#14 0x00007ff7df4db350 in KDevelop::ParseJob::highlightDUChain() () at /usr/lib/libKDevPlatformLanguage.so.52
#15 0x00007ff7df4dbcec in KDevelop::ParseJob::isUpdateRequired(KDevelop::IndexedString const&) () at /usr/lib/libKDevPlatformLanguage.so.52
#16 0x00007ff792ec355a in  () at /usr/lib/qt/plugins/kdevplatform/30/kdevclangsupport.so
#17 0x00007ff7d5eeb087 in ThreadWeaver::IdDecorator::run(QSharedPointer<ThreadWeaver::JobInterface>, ThreadWeaver::Thread*) () at /usr/lib/libKF5ThreadWeaver.so.5
#18 0x00007ff7d5eeb678 in ThreadWeaver::Executor::run(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/libKF5ThreadWeaver.so.5
#19 0x00007ff7d5eea670 in ThreadWeaver::Job::execute(QSharedPointer<ThreadWeaver::JobInterface> const&, ThreadWeaver::Thread*) () at /usr/lib/libKF5ThreadWeaver.so.5
#20 0x00007ff7d5ee9da5 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#21 0x00007ff7e1af4fcb in  () at /usr/lib/libQt5Core.so.5
#22 0x00007ff7daac908a in start_thread () at /usr/lib/libpthread.so.0
#23 0x00007ff7e140124f in clone () at /usr/lib/libc.so.6

Thread 8 (Thread 0x7ff77ffff700 (LWP 3606)):
#0  0x00007ff7daacf38d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff7e1af645c in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#2  0x00007ff7d5ee742f in ThreadWeaver::Weaver::takeFirstAvailableJobOrSuspendOrWait(ThreadWeaver::Thread*, bool, bool, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#3  0x00007ff7d5eec4d9 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#4  0x00007ff7d5ee6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#5  0x00007ff7d5eec532 in  () at /usr/lib/libKF5ThreadWeaver.so.5
#6  0x00007ff7d5ee6924 in ThreadWeaver::Weaver::applyForWork(ThreadWeaver::Thread*, bool) () at /usr/lib/libKF5ThreadWeaver.so.5
#7  0x00007ff7d5ee9ce3 in ThreadWeaver::Thread::run() () at /usr/lib/libKF5ThreadWeaver.so.5
#8  0x00007ff7e1af4fcb in  () at /usr/lib/libQt5Core.so.5
#9  0x00007ff7daac908a in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007ff7e140124f in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7ff77f5e3700 (LWP 3357)):
#0  0x00007ff7e1d33c3f in  () at /usr/lib/libQt5Core.so.5
#1  0x00007ff7d8901771 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff7d8901df6 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff7d8901fae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007ff7e1d33cf4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff7e1cd748b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007ff7e1af027e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007ff7d6b1fbc9 in  () at /usr/lib/libQt5Qml.so.5
#8  0x00007ff7e1af4fcb in  () at /usr/lib/libQt5Core.so.5
#9  0x00007ff7daac908a in start_thread () at /usr/lib/libpthread.so.0
#10 0x00007ff7e140124f in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7ff785963700 (LWP 3353)):
#0  0x00007ff7d89295f9 in g_mutex_lock () at /usr/lib/libglib-2.0.so.0
#1  0x00007ff7d89015d6 in g_main_context_prepare () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff7d8901df6 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff7d8901fae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007ff7e1d33cf4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff7e1cd748b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007ff7e1af027e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007ff7e1af4fcb in  () at /usr/lib/libQt5Core.so.5
#8  0x00007ff7daac908a in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007ff7e140124f in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7ff78d03d700 (LWP 3345)):
#0  0x00007ff7e13f6d4b in poll () at /usr/lib/libc.so.6
#1  0x00007ff7d8901ed3 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff7d8901fae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff7e1d33cf4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007ff7e1cd748b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff7e1af027e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007ff7df60f46f in  () at /usr/lib/libKDevPlatformLanguage.so.52
#7  0x00007ff7e1af4fcb in  () at /usr/lib/libQt5Core.so.5
#8  0x00007ff7daac908a in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007ff7e140124f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7ff798632700 (LWP 3343)):
#0  0x00007ff7daacf38d in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007ff7e177548d in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /build/gcc/src/gcc-build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
#2  0x00007ff7e177548d in std::condition_variable::wait(std::unique_lock<std::mutex>&) (this=<optimized out>, __lock=...) at /build/gcc/src/gcc/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00007ff79d457839 in  () at /usr/lib/libQt5WebKit.so.5
#4  0x00007ff79d457989 in  () at /usr/lib/libQt5WebKit.so.5
#5  0x00007ff7e177ba6f in std::execute_native_thread_routine(void*) (__p=0x5649627004a0) at /build/gcc/src/gcc/libstdc++-v3/src/c++11/thread.cc:83
#6  0x00007ff7daac908a in start_thread () at /usr/lib/libpthread.so.0
#7  0x00007ff7e140124f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7ff7a4b3a700 (LWP 3342)):
#0  0x00007ff7e13f6d4b in poll () at /usr/lib/libc.so.6
#1  0x00007ff7d8901ed3 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff7d8901fae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff7e1d33cf4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007ff7e1cd748b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff7e1af027e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007ff7df50693b in  () at /usr/lib/libKDevPlatformLanguage.so.52
#7  0x00007ff7e1af4fcb in  () at /usr/lib/libQt5Core.so.5
#8  0x00007ff7daac908a in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007ff7e140124f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7ff7aca74700 (LWP 3340)):
#0  0x00007ff7d8929664 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007ff7d8901de8 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007ff7d8901fae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007ff7e1d33cf4 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007ff7e1cd748b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff7e1af027e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007ff7e33a7376 in  () at /usr/lib/libQt5DBus.so.5
#7  0x00007ff7e1af4fcb in  () at /usr/lib/libQt5Core.so.5
#8  0x00007ff7daac908a in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007ff7e140124f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7ff7e46c20c0 (LWP 3337)):
#0  0x00007ff7e13fbc49 in syscall () at /usr/lib/libc.so.6
#1  0x00007ff7e1aec656 in QBasicMutex::lockInternal() () at /usr/lib/libQt5Core.so.5
#2  0x00007ff7e1aec9b4 in  () at /usr/lib/libQt5Core.so.5
#3  0x00007ff7df6412f9 in KDevelop::CodeHighlighting::adaptToColorChanges() () at /usr/lib/libKDevPlatformLanguage.so.52
#4  0x00007ff7e1d08d3f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#5  0x00007ff7df63f051 in KDevelop::ColorCache::updateInternal() () at /usr/lib/libKDevPlatformLanguage.so.52
#6  0x00007ff7e1d09662 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#7  0x00007ff7e29f6f2c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#8  0x00007ff7e29fea06 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#9  0x00007ff7e1cd9060 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#10 0x00007ff7e1cdb8b6 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#11 0x00007ff7e1d346e4 in  () at /usr/lib/libQt5Core.so.5
#12 0x00007ff7d8900270 in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#13 0x00007ff7d8901f69 in  () at /usr/lib/libglib-2.0.so.0
#14 0x00007ff7d8901fae in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#15 0x00007ff7e1d33cd1 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#16 0x00007ff7e1cd748b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#17 0x00007ff7e1ce04d8 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#18 0x00005649606ce487 in  ()
#19 0x00007ff7e132bf6a in __libc_start_main () at /usr/lib/libc.so.6
#20 0x00005649606ce9fa in _start ()

Reported using DrKonqi
Comment 1 Christoph Roick 2017-11-08 22:09:52 UTC 
I could not reproduce this again, so I'll close it.