Bug 358412

Application: krunner (5.5.3)

Qt Version: 5.6.0
Operating System: Linux 4.5.0-0.rc0.git8.1.fc24.x86_64 x86_64
Distribution (Platform): Fedora RPMs

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

I had just selected the "Leave" option from the KDE desktop menu. No other strange behavior experienced except for somewhat slow responses to KDE or KDE apps commands.

The crash can be reproduced sometimes.

-- Backtrace:
Application: krunner (krunner), signal: Segmentation fault
Using host libthread_db library "/usr/lib64/libthread_db.so.1".
84	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7fc9d1b92940 (LWP 2500))]

Thread 2 (Thread 0x7fc9b259e700 (LWP 2506)):
#0  0x00007fc9cce730bd in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007fc9c86e0880 in g_wakeup_acknowledge (__nbytes=16, __buf=0x7fc9b259da40, __fd=<optimized out>) at /usr/include/bits/unistd.h:44
#2  0x00007fc9c86e0880 in g_wakeup_acknowledge (wakeup=0x7fc9ac0015b0) at gwakeup.c:210
#3  0x00007fc9c869cdc4 in g_main_context_check (context=context@entry=0x7fc9a4000990, max_priority=2147483647, fds=fds@entry=0x7fc9a4003020, n_fds=n_fds@entry=1) at gmain.c:3632
#4  0x00007fc9c869d270 in g_main_context_iterate (context=context@entry=0x7fc9a4000990, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3837
#5  0x00007fc9c869d3dc in g_main_context_iteration (context=0x7fc9a4000990, may_block=may_block@entry=1) at gmain.c:3901
#6  0x00007fc9cdcbaacb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7fc9a40008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:419
#7  0x00007fc9cdc6350a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7fc9b259dc50, flags=..., flags@entry=...) at kernel/qeventloop.cpp:204
#8  0x00007fc9cda8f744 in QThread::exec() (this=this@entry=0x7fc9cf38d040 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:503
#9  0x00007fc9cf31b225 in QDBusConnectionManager::run() (this=0x7fc9cf38d040 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:152
#10 0x00007fc9cda946b8 in QThreadPrivate::start(void*) (arg=0x7fc9cf38d040 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:340
#11 0x00007fc9ca3cc6da in start_thread (arg=0x7fc9b259e700) at pthread_create.c:333
#12 0x00007fc9cce8314d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7fc9d1b92940 (LWP 2500)):
[KCrash Handler]
#6  0x00007fc9ce4700b0 in QMap<QString, KDirWatchPrivate::Entry>::detach() (__m=std::memory_order_relaxed, this=#7  0x00007fc9ce4700b0 in QMap<QString, KDirWatchPrivate::Entry>::detach() (_q_value=#8  0x00007fc9ce4700b0 in QMap<QString, KDirWatchPrivate::Entry>::detach() (this=#9  0x00007fc9ce4700b0 in QMap<QString, KDirWatchPrivate::Entry>::detach() (this=#10 0x00007fc9ce4700b0 in QMap<QString, KDirWatchPrivate::Entry>::detach() (this=0x30) at /usr/include/qt5/QtCore/qmap.h:360
#11 0x00007fc9ce46a754 in KDirWatchPrivate::removeEntries(KDirWatch*) (this=<optimized out>) at /usr/include/qt5/QtCore/qmap.h:548
#12 0x00007fc9ce46a754 in KDirWatchPrivate::removeEntries(KDirWatch*) (this=0x0, instance=instance@entry=0x7fc9ce6ce060 <(anonymous namespace)::Q_QGS_s_pKDirWatchSelf::innerFunction()::holder>) at /usr/src/debug/kcoreaddons-5.18.0/src/lib/io/kdirwatch.cpp:1114
#13 0x00007fc9ce46b85f in KDirWatch::~KDirWatch() (this=0x7fc9ce6ce060 <(anonymous namespace)::Q_QGS_s_pKDirWatchSelf::innerFunction()::holder>, __in_chrg=<optimized out>) at /usr/src/debug/kcoreaddons-5.18.0/src/lib/io/kdirwatch.cpp:1895
#14 0x00007fc9ce46b879 in (anonymous namespace)::Q_QGS_s_pKDirWatchSelf::Holder::~Holder() (this=<optimized out>, __in_chrg=<optimized out>) at /usr/src/debug/kcoreaddons-5.18.0/src/lib/io/kdirwatch.cpp:1857
#15 0x00007fc9ccdb71d8 in __run_exit_handlers (status=status@entry=1, listp=0x7fc9cd140618 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true) at exit.c:82
#16 0x00007fc9ccdb7225 in __GI_exit (status=status@entry=1) at exit.c:104
#17 0x00007fc9cc435eba in _IceDefaultIOErrorHandler (iceConn=<optimized out>) at error.c:603
#18 0x00007fc9cc43c0a4 in IceFlush (iceConn=iceConn@entry=0x563bd0d7e080) at misc.c:78
#19 0x00007fc9cc64d4d8 in SmcCloseConnection (smcConn=0x563bd0d879f0, count=count@entry=0, reasonMsgs=reasonMsgs@entry=0x0) at sm_client.c:305
#20 0x00007fc9b5fa8b63 in QXcbSessionManager::~QXcbSessionManager() (this=0x563bd0d586a0, __in_chrg=<optimized out>) at qxcbsessionmanager.cpp:376
#21 0x00007fc9b5fa8b99 in QXcbSessionManager::~QXcbSessionManager() (this=0x563bd0d586a0, __in_chrg=<optimized out>) at qxcbsessionmanager.cpp:379
#22 0x00007fc9cdfa562d in QSessionManagerPrivate::~QSessionManagerPrivate() (this=0x563bd0d89fe0, __in_chrg=<optimized out>) at kernel/qsessionmanager.cpp:128
#23 0x00007fc9cdfa562d in QSessionManagerPrivate::~QSessionManagerPrivate() (this=0x563bd0d89fe0, __in_chrg=<optimized out>) at kernel/qsessionmanager.cpp:130
#24 0x00007fc9cdc9984c in QObject::~QObject() (pointer=<optimized out>) at ../../src/corelib/tools/qscopedpointer.h:54
#25 0x00007fc9cdc9984c in QObject::~QObject() (this=0x563bd0d74968, __in_chrg=<optimized out>) at ../../src/corelib/tools/qscopedpointer.h:101
#26 0x00007fc9cdc9984c in QObject::~QObject() (this=<optimized out>, __in_chrg=<optimized out>) at kernel/qobject.cpp:893
#27 0x00007fc9cdfa5749 in QSessionManager::~QSessionManager() (this=0x563bd0d74960, __in_chrg=<optimized out>) at kernel/qsessionmanager.cpp:139
#28 0x00007fc9cdfa8dff in QGuiApplication::~QGuiApplication() (this=0x7ffdf69c6d10, __in_chrg=<optimized out>) at kernel/qguiapplication.cpp:593
#29 0x00007fc9ce8290d4 in QApplication::~QApplication() (this=0x7ffdf69c6d10, __in_chrg=<optimized out>) at kernel/qapplication.cpp:809
#30 0x0000563bcfd8204c in main(int, char**) (argc=1, argv=<optimized out>) at /usr/src/debug/plasma-workspace-5.5.3/krunner/main.cpp:45

Reported using DrKonqi