Bug 390944

Application: dolphin (17.12.2)

Qt Version: 5.9.3
Frameworks Version: 5.43.0
Operating System: Linux 4.13.0-36-generic x86_64
Distribution: KDE neon User Edition 5.12

-- Information about the crash:
- What I was doing when the application crashed: I had dolphin listing a the contents of a directory (default view) which was deleted by an external process

-- 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 0x7f7ab7a698c0 (LWP 5517))]

Thread 4 (Thread 0x7f7a8fda3700 (LWP 5642)):
#0  0x00007f7ab739827d in read () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7aaa6996f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7aaa655e74 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7aaa656330 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7aaa65649c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f7ab15d66cb in QEventDispatcherGlib::processEvents (this=0x7f7a880008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#6  0x00007f7ab157ee2a in QEventLoop::exec (this=this@entry=0x7f7a8fda2d00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#7  0x00007f7ab13a78f4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#8  0x00007f7ab13ac709 in QThreadPrivate::start (arg=0x1379f30) at thread/qthread_unix.cpp:368
#9  0x00007f7aac72b6ba in start_thread (arg=0x7f7a8fda3700) at pthread_create.c:333
#10 0x00007f7ab73a841d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 3 (Thread 0x7f7a9dea4700 (LWP 5535)):
#0  0x00007f7ab739c74d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7aaa65638c in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7aaa65649c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7ab15d66cb in QEventDispatcherGlib::processEvents (this=0x7f7a900008c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f7ab157ee2a in QEventLoop::exec (this=this@entry=0x7f7a9dea3cd0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007f7ab13a78f4 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#6  0x00007f7ab1a55315 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f7ab13ac709 in QThreadPrivate::start (arg=0x7f7ab1cc9d40) at thread/qthread_unix.cpp:368
#8  0x00007f7aac72b6ba in start_thread (arg=0x7f7a9dea4700) at pthread_create.c:333
#9  0x00007f7ab73a841d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 2 (Thread 0x7f7aa01b3700 (LWP 5520)):
#0  0x00007f7ab739c74d in poll () at ../sysdeps/unix/syscall-template.S:84
#1  0x00007f7aa9f9dc62 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f7aa9f9f8d7 in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f7aa270a1f9 in QXcbEventReader::run (this=0xf2bf80) at qxcbconnection.cpp:1330
#4  0x00007f7ab13ac709 in QThreadPrivate::start (arg=0xf2bf80) at thread/qthread_unix.cpp:368
#5  0x00007f7aac72b6ba in start_thread (arg=0x7f7aa01b3700) at pthread_create.c:333
#6  0x00007f7ab73a841d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109

Thread 1 (Thread 0x7f7ab7a698c0 (LWP 5517)):
[KCrash Handler]
#6  __memcpy_avx_unaligned () at ../sysdeps/x86_64/multiarch/memcpy-avx-unaligned.S:238
#7  0x00007f7ab2f154bb in memcpy (__len=65268, __src=<optimized out>, __dest=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/string3.h:53
#8  QConcatenable<QString>::appendTo (out=<synthetic pointer>, a=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringbuilder.h:261
#9  QConcatenable<QStringBuilder<QString, QLatin1Char> >::appendTo<QChar> (out=<synthetic pointer>, p=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringbuilder.h:357
#10 QConcatenable<QStringBuilder<QStringBuilder<QString, QLatin1Char>, QString> >::appendTo<QChar> (out=<synthetic pointer>, p=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringbuilder.h:357
#11 QStringBuilder<QStringBuilder<QString, QLatin1Char>, QString>::convertTo<QString> (this=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringbuilder.h:118
#12 QStringBuilder<QStringBuilder<QString, QLatin1Char>, QString>::operator QString (this=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qstringbuilder.h:131
#13 KDirWatchPrivate::inotifyEventReceived (this=0x14769f0) at /workspace/build/src/lib/io/kdirwatch.cpp:322
#14 0x00007f7ab15ad279 in QMetaObject::activate (sender=sender@entry=0x101f300, signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffcb98ae000) at kernel/qobject.cpp:3766
#15 0x00007f7ab15adb87 in QMetaObject::activate (sender=sender@entry=0x101f300, m=m@entry=0x7f7ab1a37d60 <QSocketNotifier::staticMetaObject>, local_signal_index=local_signal_index@entry=0, argv=argv@entry=0x7ffcb98ae000) at kernel/qobject.cpp:3628
#16 0x00007f7ab15b9528 in QSocketNotifier::activated (this=this@entry=0x101f300, _t1=14, _t2=...) at .moc/moc_qsocketnotifier.cpp:136
#17 0x00007f7ab15b98eb in QSocketNotifier::event (this=0x101f300, e=<optimized out>) at kernel/qsocketnotifier.cpp:266
#18 0x00007f7ab256ab9c in QApplicationPrivate::notify_helper (this=<optimized out>, receiver=0x101f300, e=0x7ffcb98ae260) at kernel/qapplication.cpp:3722
#19 0x00007f7ab25725a7 in QApplication::notify (this=0x7ffcb98ae5c0, receiver=0x101f300, e=0x7ffcb98ae260) at kernel/qapplication.cpp:3481
#20 0x00007f7ab1580df8 in QCoreApplication::notifyInternal2 (receiver=0x101f300, event=event@entry=0x7ffcb98ae260) at kernel/qcoreapplication.cpp:1018
#21 0x00007f7ab15d732d in QCoreApplication::sendEvent (event=0x7ffcb98ae260, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:233
#22 socketNotifierSourceDispatch (source=0xf4dba0) at kernel/qeventdispatcher_glib.cpp:106
#23 0x00007f7aaa656197 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f7aaa6563f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f7aaa65649c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f7ab15d66cb in QEventDispatcherGlib::processEvents (this=0xf523c0, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#27 0x00007f7ab157ee2a in QEventLoop::exec (this=this@entry=0x7ffcb98ae480, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#28 0x00007f7ab1587d64 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1291
#29 0x00007f7ab1df3bdc in QGuiApplication::exec () at kernel/qguiapplication.cpp:1679
#30 0x00007f7ab256aaf5 in QApplication::exec () at kernel/qapplication.cpp:2910
#31 0x00007f7ab76ae90a in kdemain (argc=1, argv=<optimized out>) at /workspace/build/src/main.cpp:163
#32 0x00007f7ab72c1830 in __libc_start_main (main=0x4006b0 <main(int, char**)>, argc=3, argv=0x7ffcb98ae748, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffcb98ae738) at ../csu/libc-start.c:291
#33 0x00000000004006e9 in _start ()

Reported using DrKonqi