Application: dolphin (20.08.1)

Qt Version: 5.15.0
Frameworks Version: 5.74.0
Operating System: Linux 5.4.0-48-generic x86_64
Windowing system: X11
Distribution: KDE neon User Edition 5.19

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

dolphin crashed when entering folder mounted with curlftps,

The crash can be reproduced sometimes.

-- Backtrace:
Application: Dolphin (dolphin), signal: Aborted

[KCrash Handler]
#4  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#5  0x00007fefeae9c859 in __GI_abort () at abort.c:79
#6  0x00007fefeaf073ee in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7fefeb031285 "%s\n") at ../sysdeps/posix/libc_fatal.c:155
#7  0x00007fefeaf0f47c in malloc_printerr (str=str@entry=0x7fefeb0335d0 "free(): double free detected in tcache 2") at malloc.c:5347
#8  0x00007fefeaf110ed in _int_free (av=0x7fefeb062b80 <main_arena>, p=0x55fd68a290a0, have_lock=0) at malloc.c:4201
#9  0x00007fefeadb5f1f in KFileItemModel::~KFileItemModel() () from /usr/lib/x86_64-linux-gnu/libdolphinprivate.so.5
#10 0x00007fefeadb625d in KFileItemModel::~KFileItemModel() () from /usr/lib/x86_64-linux-gnu/libdolphinprivate.so.5
#11 0x00007fefe8cd2bae in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fefe8cdd5d6 in QObject::~QObject() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fefeadcbafd in KItemListController::~KItemListController() () from /usr/lib/x86_64-linux-gnu/libdolphinprivate.so.5
#14 0x00007fefeadc8b5f in KItemListContainer::~KItemListContainer() () from /usr/lib/x86_64-linux-gnu/libdolphinprivate.so.5
#15 0x00007fefeadc8b8d in KItemListContainer::~KItemListContainer() () from /usr/lib/x86_64-linux-gnu/libdolphinprivate.so.5
#16 0x00007fefe8cd2bae in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fefe98fc786 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007fefeae0bb5d in DolphinView::~DolphinView() () from /usr/lib/x86_64-linux-gnu/libdolphinprivate.so.5
#19 0x00007fefe8cd2bae in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007fefe98fc786 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007fefeb0ce365 in ?? () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#22 0x00007fefe8cd2bae in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fefe98fc786 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007fefe9a765ad in QSplitter::~QSplitter() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007fefe8cd2bae in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007fefe98fc786 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007fefeb11a010 in ?? () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#28 0x00007fefe8cd2bae in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007fefe98fc786 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007fefe9a773fd in QStackedWidget::~QStackedWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007fefe8cd2bae in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007fefe98fc786 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007fefeb119dc1 in ?? () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#34 0x00007fefe8cd2bae in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007fefe98fc786 in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007fefea3f8768 in KMainWindow::~KMainWindow() () from /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#37 0x00007fefeb0c9d0c in ?? () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#38 0x00007fefeb0c9d5d in ?? () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#39 0x00007fefe8cd5ec3 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x00007fefe9900d5d in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#41 0x00007fefe9a19a18 in QMainWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#42 0x00007fefea3fac3b in KMainWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#43 0x00007fefea4458eb in KXmlGuiWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#44 0x00007fefeb0be958 in ?? () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#45 0x00007fefe98bdcc3 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#46 0x00007fefe98c6c70 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#47 0x00007fefe8ca86aa in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#48 0x00007fefe8caafa1 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#49 0x00007fefe8d03837 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#50 0x00007fefe6a92fbd in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#51 0x00007fefe6a93240 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#52 0x00007fefe6a932e3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#53 0x00007fefe8d02e92 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#54 0x00007fefe8ca71bb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#55 0x00007fefe8caf354 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#56 0x00007fefeb0b824f in kdemain () from /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#57 0x00007fefeae9e0b3 in __libc_start_main (main=0x55fd65cd6060, argc=1, argv=0x7fff5a769de8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff5a769dd8) at ../csu/libc-start.c:308
#58 0x000055fd65cd609e in _start ()
[Inferior 1 (process 42346) detached]

Possible duplicates by query: bug 427535, bug 427384, bug 427118, bug 426962, bug 426657.

Reported using DrKonqi