Application: konqueror (4.14.6)
KDE Platform Version: 4.14.6
Qt Version: 4.8.6
Operating System: Linux 3.19.5-200.fc21.x86_64 x86_64
Distribution: "Fedora release 21 (Twenty One)"

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

Nothing. The computer was idle, and the screen had blanked. Hit the keyboard to light it up, and there was the crash aler.

-- Backtrace:
Application: Konqueror (konqueror), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
81	T_PSEUDO (SYSCALL_SYMBOL, SYSCALL_NAME, SYSCALL_NARGS)
[Current thread is 1 (Thread 0x7f2d9ecdd880 (LWP 1991))]

Thread 3 (Thread 0x7f2d3393e700 (LWP 2319)):
[KCrash Handler]
#6  0x00007f2d9846b42e in _dbus_counter_notify (counter=0x160ab70) at dbus-resources.c:187
#7  0x00007f2d98463e82 in free_counter (element=0x160ab70, data=0x7f2d2c00bab0) at dbus-message.c:639
#8  0x00007f2d984643b2 in dbus_message_cache_or_finalize (message=0x7f2d2c00bab0) at dbus-message.c:661
#9  dbus_message_unref (message=0x7f2d2c00bab0) at dbus-message.c:1707
#10 0x00007f2d9da08239 in q_dbus_message_unref (message=<optimized out>) at qdbus_symbols_p.h:296
#11 ~QDBusArgumentPrivate (this=0x157eb90, __in_chrg=<optimized out>) at qdbusargument.cpp:66
#12 QDBusArgument::~QDBusArgument (this=<optimized out>, __in_chrg=<optimized out>) at qdbusargument.cpp:348
#13 0x00007f2d9d9e447e in qMetaTypeDeleteHelper<QDBusArgument> (t=0x1a75eb0) at ../../src/corelib/kernel/qmetatype.h:134
#14 0x00007f2d9d674e33 in clear(QVariant::Private*) () from /lib64/libQtCore.so.4
#15 0x00007f2d9d9d306c in node_destruct (this=<optimized out>, to=0x1261858, from=0x1261858) at ../../src/corelib/tools/qlist.h:431
#16 free (this=<optimized out>, data=0x1261840) at ../../src/corelib/tools/qlist.h:757
#17 QList<QVariant>::~QList (this=<optimized out>, __in_chrg=<optimized out>) at ../../src/corelib/tools/qlist.h:732
#18 0x00007f2d9d9e7c3f in QDBusMessage::~QDBusMessage (this=<optimized out>, __in_chrg=<optimized out>) at qdbusmessage.cpp:537
#19 0x00007f2d9d9e4a16 in ~QDBusCallDeliveryEvent (this=0x312fb50, __in_chrg=<optimized out>) at qdbusintegrator_p.h:93
#20 QDBusCallDeliveryEvent::~QDBusCallDeliveryEvent (this=0x312fb50, __in_chrg=<optimized out>) at qdbusintegrator_p.h:93
#21 0x00007f2d9d65343a in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib64/libQtCore.so.4
#22 0x00007f2d9d67f32e in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQtCore.so.4
#23 0x00007f2d97f5a7fb in g_main_dispatch (context=0x7f2d2c0009a0) at gmain.c:3111
#24 g_main_context_dispatch (context=context@entry=0x7f2d2c0009a0) at gmain.c:3710
#25 0x00007f2d97f5ab98 in g_main_context_iterate (context=context@entry=0x7f2d2c0009a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3781
#26 0x00007f2d97f5ac4c in g_main_context_iteration (context=0x7f2d2c0009a0, may_block=1) at gmain.c:3842
#27 0x00007f2d9d67f49e in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQtCore.so.4
#28 0x00007f2d9d64ecc1 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQtCore.so.4
#29 0x00007f2d9d64f025 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQtCore.so.4
#30 0x00007f2d9d543b49 in QThread::exec() () from /lib64/libQtCore.so.4
#31 0x00007f2d9d5463af in QThreadPrivate::start(void*) () from /lib64/libQtCore.so.4
#32 0x00007f2d9d2b552a in start_thread (arg=0x7f2d3393e700) at pthread_create.c:310
#33 0x00007f2d9b87d22d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f2d32695700 (LWP 2399)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f2d885bcc93 in JSC::BlockAllocator::blockFreeingThreadMain (this=0x1747b18) at /usr/src/debug/webkit-qtwebkit-23/Source/JavaScriptCore/heap/BlockAllocator.cpp:128
#2  0x00007f2d888ccc16 in WTF::wtfThreadEntryPoint (param=0xf7f790) at /usr/src/debug/webkit-qtwebkit-23/Source/WTF/wtf/ThreadingPthreads.cpp:196
#3  0x00007f2d9d2b552a in start_thread (arg=0x7f2d32695700) at pthread_create.c:310
#4  0x00007f2d9b87d22d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f2d9ecdd880 (LWP 1991)):
#0  0x00007f2d9d2bd1cd in read () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f2d97f9dd00 in read (__nbytes=16, __buf=0x7fff90a3e0c0, __fd=<optimized out>) at /usr/include/bits/unistd.h:44
#2  g_wakeup_acknowledge (wakeup=0x986230) at gwakeup.c:210
#3  0x00007f2d97f5a5fc in g_main_context_check (context=context@entry=0xa55510, max_priority=2147483647, fds=fds@entry=0x1f4a090, n_fds=n_fds@entry=6) at gmain.c:3579
#4  0x00007f2d97f5aad3 in g_main_context_iterate (context=context@entry=0xa55510, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3778
#5  0x00007f2d97f5ac4c in g_main_context_iteration (context=0xa55510, may_block=1) at gmain.c:3842
#6  0x00007f2d9d67f4be in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQtCore.so.4
#7  0x00007f2d9c82b176 in QGuiEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQtGui.so.4
#8  0x00007f2d9d64ecc1 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQtCore.so.4
#9  0x00007f2d9d64f025 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQtCore.so.4
#10 0x00007f2d9d654709 in QCoreApplication::exec() () from /lib64/libQtCore.so.4
#11 0x00007f2d7cd7c936 in kdemain () from /usr/lib64/libkdeinit4_konqueror.so
#12 0x000000000040825d in launch (argc=argc@entry=3, _name=_name@entry=0xa18258 "konqueror", args=0xa182a6 "", args@entry=0xa18262 "-session", cwd=cwd@entry=0x0, envc=envc@entry=0, envs=<optimized out>, envs@entry=0xa182ae "", reset_env=false, tty=0x0, avoid_loops=false, startup_id_str=0x40aa8e "0") at /usr/src/debug/kdelibs-4.14.6/kinit/kinit.cpp:726
#13 0x00000000004090a9 in handle_launcher_request (sock=8, who=<optimized out>) at /usr/src/debug/kdelibs-4.14.6/kinit/kinit.cpp:1218
#14 0x0000000000409787 in handle_requests (waitForPid=waitForPid@entry=0) at /usr/src/debug/kdelibs-4.14.6/kinit/kinit.cpp:1411
#15 0x000000000040537d in main (argc=4, argv=<optimized out>, envp=0x7fff90a3f020) at /usr/src/debug/kdelibs-4.14.6/kinit/kinit.cpp:1899

Reported using DrKonqi