Application: dolphin (17.12.2)

Qt Version: 5.9.3
Frameworks Version: 5.43.0
Operating System: Linux 4.13.0-32-generic x86_64
Distribution: KDE neon User Edition 5.12

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

I had 2 tabs open in dolphin one of which had a split view. The embedded konsole view was also visible. When i switched from the second tab (the one with the single view) to the first one (split view), dolphin crashed. This has happened twice in 3 days just after upgrading to Plasma 5.12 and latest Qt. This has never happened before on version of Plasma [5.9 - 5.11]

The crash can be reproduced sometimes.

-- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f9f7bb978c0 (LWP 2833))]

Thread 3 (Thread 0x7f9f53da3700 (LWP 2865)):
#0  0x00007f9f7b4ca74d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f9f6e78438c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9f6e78449c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9f757046cb in QEventDispatcherGlib::processEvents (this=0x7f9f4c0008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f9f756ace2a in QEventLoop::exec (this=this@entry=0x7f9f53da2d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f9f754d58f4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#6  0x00007f9f754da709 in QThreadPrivate::start (arg=0x24566e0) at thread/qthread_unix.cpp:368
#7  0x00007f9f708596ba in start_thread (arg=0x7f9f53da3700) at pthread_create.c:333
#8  0x00007f9f7b4d641d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f9f61fd2700 (LWP 2836)):
#0  0x00007f9f7b4c627d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f9f6e7c76f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f9f6e783e74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f9f6e784330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f9f6e78449c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f9f757046cb in QEventDispatcherGlib::processEvents (this=0x7f9f540008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f9f756ace2a in QEventLoop::exec (this=this@entry=0x7f9f61fd1cd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#7  0x00007f9f754d58f4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#8  0x00007f9f75b83315 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f9f754da709 in QThreadPrivate::start (arg=0x7f9f75df7d40) at thread/qthread_unix.cpp:368
#10 0x00007f9f708596ba in start_thread (arg=0x7f9f61fd2700) at pthread_create.c:333
#11 0x00007f9f7b4d641d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f9f7bb978c0 (LWP 2833)):
[KCrash Handler]
#6  QStringBuilder<QStringBuilder<QString, QLatin1Char>, QString>::convertTo<QString> (this=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringbuilder.h:112
#7  QStringBuilder<QStringBuilder<QString, QLatin1Char>, QString>::operator QString (this=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringbuilder.h:131
#8  KDirWatchPrivate::inotifyEventReceived (this=0x255b030) at /workspace/build/src/lib/io/kdirwatch.cpp:322
#9  0x00007f9f756db279 in QMetaObject::activate (sender=sender@entry=0x24a5a70, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd77610a40) at kernel/qobject.cpp:3766
#10 0x00007f9f756dbb87 in QMetaObject::activate (sender=sender@entry=0x24a5a70, m=m@entry=0x7f9f75b65d60 <QSocketNotifier::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffd77610a40) at kernel/qobject.cpp:3628
#11 0x00007f9f756e7528 in QSocketNotifier::activated (this=this@entry=0x24a5a70, _t1=15, _t2=...) at .moc/moc_qsocketnotifier.cpp:136
#12 0x00007f9f756e78eb in QSocketNotifier::event (this=0x24a5a70, e=<optimized out>) at kernel/qsocketnotifier.cpp:266
#13 0x00007f9f76698b9c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x24a5a70, e=0x7ffd77610ca0) at kernel/qapplication.cpp:3722
#14 0x00007f9f766a05a7 in QApplication::notify (this=0x7ffd77611000, receiver=0x24a5a70, e=0x7ffd77610ca0) at kernel/qapplication.cpp:3481
#15 0x00007f9f756aedf8 in QCoreApplication::notifyInternal2 (receiver=0x24a5a70, event=event@entry=0x7ffd77610ca0) at kernel/qcoreapplication.cpp:1018
#16 0x00007f9f7570532d in QCoreApplication::sendEvent (event=0x7ffd77610ca0, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:233
#17 socketNotifierSourceDispatch (source=0x205f6e0) at kernel/qeventdispatcher_glib.cpp:106
#18 0x00007f9f6e784197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f9f6e7843f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f9f6e78449c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f9f757046af in QEventDispatcherGlib::processEvents (this=0x205b4a0, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#22 0x00007f9f756ace2a in QEventLoop::exec (this=this@entry=0x7ffd77610ec0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#23 0x00007f9f756b5d64 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1291
#24 0x00007f9f75f21bdc in QGuiApplication::exec () at kernel/qguiapplication.cpp:1679
#25 0x00007f9f76698af5 in QApplication::exec () at kernel/qapplication.cpp:2910
#26 0x00007f9f7b7dc90a in kdemain (argc=1, argv=<optimized out>) at /workspace/build/src/main.cpp:163
#27 0x00007f9f7b3ef830 in __libc_start_main (main=0x4006b0 <main(int, char**)>, argc=3, argv=0x7ffd77611188, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd77611178) at ../csu/libc-start.c:291
#28 0x00000000004006e9 in _start ()

Possible duplicates by query: bug 390214.

Reported using DrKonqi