https://bugs.kde.org/show_bug.cgi?id=402156

            Bug ID: 402156
           Summary: Crash when trying to empty the Trash folder.
           Product: dolphin
           Version: 18.04.3
          Platform: Ubuntu Packages
                OS: Linux
            Status: REPORTED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: dolphin-bugs-n...@kde.org
          Reporter: selftest...@mail.ru
                CC: elvis.angelac...@kde.org
  Target Milestone: ---

Application: dolphin (18.04.3)

Qt Version: 5.11.1
Frameworks Version: 5.50.0
Operating System: Linux 4.18.0-11-generic x86_64
Distribution: Ubuntu 18.10

-- Information about the crash:
- What I was doing when the application crashed:
I was emptying trash folder, when Dolphin crashed.

- Unusual behavior I noticed:
When I tried to empty the recycle bin, errors popped about 'deletion not
possible' before the crash.

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 0x7fefd8a84800 (LWP 13816))]

Thread 8 (Thread 0x7fefb33fe700 (LWP 27641)):
#0  0x00007fefe24246d9 in __GI___poll (fds=0x7fefa4021940, nfds=3, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fefde5139b1 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007fefde5051e0 in pa_mainloop_poll () at
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007fefde50582e in pa_mainloop_iterate () at
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007fefde5058e0 in pa_mainloop_run () at
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007fefde5138f9 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007fefdc90b6f8 in  () at
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#7  0x00007fefde556164 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#8  0x00007fefe2430def in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fefb3fff700 (LWP 24357)):
#0  0x00007fefde55c2eb in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x55e92a912ee4) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fefde55c2eb in __pthread_cond_wait_common (abstime=0x0,
mutex=0x55e92a912e90, cond=0x55e92a912eb8) at pthread_cond_wait.c:502
#2  0x00007fefde55c2eb in __pthread_cond_wait (cond=0x55e92a912eb8,
mutex=0x55e92a912e90) at pthread_cond_wait.c:655
#3  0x00007fefe016043b in QWaitCondition::wait(QMutex*, unsigned long) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fefdf0d4279 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#5  0x00007fefdf0d44da in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#6  0x00007fefe015fc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fefde556164 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#8  0x00007fefe2430def in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fefc0b80700 (LWP 24332)):
#0  0x00007fefe241ff64 in __GI___libc_read (fd=39, buf=0x7fefc0b7fcd0,
nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007fefdd3f9180 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fefdd3b391f in g_main_context_check () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fefdd3b3df0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fefdd3b41d2 in g_main_loop_run () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fefc19297b6 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#6  0x00007fefdd3dc135 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fefde556164 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#8  0x00007fefe2430def in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fefc1381700 (LWP 24331)):
#0  0x00007fefe24246d9 in __GI___poll (fds=0x55e92aa99790, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fefdd3b3e46 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fefdd3b3f6c in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fefdd3b3fb1 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fefdd3dc135 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fefde556164 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#6  0x00007fefe2430def in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fefc3d56700 (LWP 24305)):
#0  0x00007fefe241ff64 in __GI___libc_read (fd=17, buf=0x7fefc3d55b60,
nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007fefdd3f9180 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fefdd3b391f in g_main_context_check () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fefdd3b3df0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fefdd3b3f6c in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fefe035a15b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fefe030716b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fefe01560b6 in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fefdedd01f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#9  0x00007fefe015fc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fefde556164 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#11 0x00007fefe2430def in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fefd5e5c700 (LWP 13823)):
#0  0x00007fefe24246d9 in __GI___poll (fds=0x7fefc801ae90, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fefdd3b3e46 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fefdd3b3f6c in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fefe035a15b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fefe030716b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fefe01560b6 in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fefe0613545 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fefe015fc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fefde556164 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#9  0x00007fefe2430def in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fefd6ff3700 (LWP 13820)):
#0  0x00007fefe24246d9 in __GI___poll (fds=0x7fefd6ff2cb8, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fefdd013917 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fefdd01553a in xcb_wait_for_event () at
/usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fefd83c1159 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fefe015fc87 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fefde556164 in start_thread (arg=<optimized out>) at
pthread_create.c:486
#6  0x00007fefe2430def in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fefd8a84800 (LWP 13816)):
[KCrash Handler]
#6  0x00007fefe0311737 in QMetaObject::cast(QObject const*) const () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fefe1a5846f in  () at /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#8  0x00007fefe030807b in
QCoreApplicationPrivate::sendThroughApplicationEventFilters(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fefe0d594d8 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007fefe0d60ae0 in QApplication::notify(QObject*, QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007fefe0308499 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fefe0d98ec0 in QWidget::setParent(QWidget*, QFlags<Qt::WindowType>)
() at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007fefe0d992aa in QWidgetPrivate::init(QWidget*,
QFlags<Qt::WindowType>) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007fefe0f43446 in QDialog::QDialog(QWidget*, QFlags<Qt::WindowType>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007fefe1778b90 in KMessageBox::messageBox(QWidget*,
KMessageBox::DialogType, QString const&, QString const&, KGuiItem const&,
KGuiItem const&, KGuiItem const&, QString const&, QFlags<KMessageBox::Option>)
() at /usr/lib/x86_64-linux-gnu/libKF5WidgetsAddons.so.5
#16 0x00007fefe1e67944 in  () at
/usr/lib/x86_64-linux-gnu/libKF5JobWidgets.so.5
#17 0x00007fefe0331f92 in QObject::event(QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007fefe0d594a1 in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007fefe0d60ae0 in QApplication::notify(QObject*, QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007fefe0308499 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007fefe030b48b in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007fefe035ab23 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fefdd3b3c3e in g_main_context_dispatch () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007fefdd3b3ed8 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007fefdd3b3f6c in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007fefe035a143 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007fefd8452e51 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#28 0x00007fefe030716b in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007fefe030f2e2 in QCoreApplication::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007fefe25450bf in kdemain () at
/usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#31 0x00007fefe233a09b in __libc_start_main (main=0x55e92862f050, argc=3,
argv=0x7ffd1ffe4d08, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffd1ffe4cf8) at ../csu/libc-start.c:308
#32 0x000055e92862f08a in _start ()
[Inferior 1 (process 13816) detached]

Reported using DrKonqi

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