388803 – KTorrent crashes when last torrent is deleted

Bug 388803 - KTorrent crashes when last torrent is deleted

Summary: KTorrent crashes when last torrent is deleted

Status:	REPORTED

Alias:	None

Product:	ktorrent
Classification:	Applications
Component:	general (show other bugs)
Version:	unspecified
Platform:	Fedora RPMs Linux

Importance:	VHI crash
Target Milestone:	---
Assignee:	Joris Guisson

URL:
Keywords:	drkonqi

Duplicates (10):	390315 412324 412510 414403 419367 419571 419693 429495 429599 454454 (view as bug list)
Depends on:
Blocks:

Reported:	2018-01-11 13:07 UTC by solorider
Modified:	2023-11-12 11:33 UTC (History)
CC List:	16 users (show)

See Also:	383127
Latest Commit:
Version Fixed In:
Sentry Crash Report:

Attachments
New crash information added by DrKonqi (15.60 KB, text/plain) 2019-02-02 12:11 UTC, franz	Details
New crash information added by DrKonqi (20.70 KB, text/plain) 2019-03-28 05:53 UTC, Stelios	Details
New crash information added by DrKonqi (12.56 KB, text/plain) 2019-05-20 14:27 UTC, Yosef Murphey	Details
New crash information added by DrKonqi (10.14 KB, text/plain) 2020-03-24 21:20 UTC, Nicolas Gutierrez	Details
New crash information added by DrKonqi (25.27 KB, text/plain) 2020-06-02 15:31 UTC, Alexey Min	Details
View All Add an attachment

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Description solorider 2018-01-11 13:07:30 UTC

Application: ktorrent (5.1.0)

Qt Version: 5.9.2
Frameworks Version: 5.41.0
Operating System: Linux 4.14.11-300.fc27.x86_64 x86_64
Distribution (Platform): Fedora RPMs

-- Information about the crash:
Tried to remove the last existing torrent listed in KTorrent

The crash can be reproduced every time.

-- Backtrace:
Application: KTorrent (ktorrent), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f91673aa940 (LWP 2457))]

Thread 14 (Thread 0x7f90cf7fe700 (LWP 7968)):
#0  0x00007f915f54243c in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f915f4a79dc in _int_free () from /lib64/libc.so.6
#2  0x00007f91564a2476 in magazine_cache_push_magazine () from /lib64/libglib-2.0.so.0
#3  0x00007f91564a25a1 in private_thread_memory_cleanup () from /lib64/libglib-2.0.so.0
#4  0x00007f915a18a368 in __nptl_deallocate_tsd.part.5 () from /lib64/libpthread.so.0
#5  0x00007f915a18b75b in start_thread () from /lib64/libpthread.so.0
#6  0x00007f915f53391f in clone () from /lib64/libc.so.6

Thread 13 (Thread 0x7f90cffff700 (LWP 7967)):
#0  0x00007f915f54243c in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f915f4a79dc in _int_free () from /lib64/libc.so.6
#2  0x00007f915648b4ae in g_free () from /lib64/libglib-2.0.so.0
#3  0x00007f915a18a368 in __nptl_deallocate_tsd.part.5 () from /lib64/libpthread.so.0
#4  0x00007f915a18b75b in start_thread () from /lib64/libpthread.so.0
#5  0x00007f915f53391f in clone () from /lib64/libc.so.6

Thread 12 (Thread 0x7f9118d79700 (LWP 7964)):
#0  0x00007f915f54243c in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f915f4a79dc in _int_free () from /lib64/libc.so.6
#2  0x00007f91671ef00d in _dl_deallocate_tls () from /lib64/ld-linux-x86-64.so.2
#3  0x00007f915a18b512 in __free_tcb () from /lib64/libpthread.so.0
#4  0x00007f915a18b8d2 in start_thread () from /lib64/libpthread.so.0
#5  0x00007f915f53391f in clone () from /lib64/libc.so.6

Thread 11 (Thread 0x7f9116f5a700 (LWP 7963)):
#0  0x00007f915f54243c in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f915f5ab264 in tcache_thread_freeres () from /lib64/libc.so.6
#2  0x00007f915f5abb92 in __libc_thread_freeres () from /lib64/libc.so.6
#3  0x00007f915a18b640 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f915f53391f in clone () from /lib64/libc.so.6

Thread 10 (Thread 0x7f9116759700 (LWP 7962)):
#0  0x00007f915f54243c in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f915f5ab264 in tcache_thread_freeres () from /lib64/libc.so.6
#2  0x00007f915f5abb92 in __libc_thread_freeres () from /lib64/libc.so.6
#3  0x00007f915a18b640 in start_thread () from /lib64/libpthread.so.0
#4  0x00007f915f53391f in clone () from /lib64/libc.so.6

Thread 9 (Thread 0x7f9114c52700 (LWP 2506)):
#0  0x00007f915a191c4b in pthread_cond_wait@@GLIBC_2.3.2 () from /lib64/libpthread.so.0
#1  0x00007f91601962eb in QWaitCondition::wait(QMutex*, unsigned long) () from /lib64/libQt5Core.so.5
#2  0x00007f9166bea523 in net::ReverseResolverThread::run() () from /lib64/libKF5Torrent.so.6
#3  0x00007f9160195b92 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#4  0x00007f915a18b61b in start_thread () from /lib64/libpthread.so.0
#5  0x00007f915f53391f in clone () from /lib64/libc.so.6

Thread 8 (Thread 0x7f9115453700 (LWP 2505)):
#0  0x00007f915f4f7ad0 in nanosleep () from /lib64/libc.so.6
#1  0x00007f9160391c2d in qt_nanosleep(timespec) () from /lib64/libQt5Core.so.5
#2  0x00007f9166be7778 in net::UploadThread::update() () from /lib64/libKF5Torrent.so.6
#3  0x00007f9166be7d19 in net::NetworkThread::run() () from /lib64/libKF5Torrent.so.6
#4  0x00007f9160195b92 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007f915a18b61b in start_thread () from /lib64/libpthread.so.0
#6  0x00007f915f53391f in clone () from /lib64/libc.so.6

Thread 7 (Thread 0x7f9115c54700 (LWP 2504)):
#0  0x00007f915f4f7ad0 in nanosleep () from /lib64/libc.so.6
#1  0x00007f9160391c2d in qt_nanosleep(timespec) () from /lib64/libQt5Core.so.5
#2  0x00007f9166be7cd8 in net::DownloadThread::update() () from /lib64/libKF5Torrent.so.6
#3  0x00007f9166be7d19 in net::NetworkThread::run() () from /lib64/libKF5Torrent.so.6
#4  0x00007f9160195b92 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#5  0x00007f915a18b61b in start_thread () from /lib64/libpthread.so.0
#6  0x00007f915f53391f in clone () from /lib64/libc.so.6

Thread 6 (Thread 0x7f9127fff700 (LWP 2497)):
#0  0x00007f9156484da9 in g_main_context_acquire () from /lib64/libglib-2.0.so.0
#1  0x00007f9156485d95 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f9156485fec in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f916039235b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#4  0x00007f91603400ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#5  0x00007f91601918ba in QThread::exec() () from /lib64/libQt5Core.so.5
#6  0x00007f9160195b92 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#7  0x00007f915a18b61b in start_thread () from /lib64/libpthread.so.0
#8  0x00007f915f53391f in clone () from /lib64/libc.so.6

Thread 5 (Thread 0x7f913daca700 (LWP 2492)):
#0  0x00007f915f54243c in __lll_lock_wait_private () from /lib64/libc.so.6
#1  0x00007f915f4ad9be in realloc () from /lib64/libc.so.6
#2  0x00007f9160196609 in QArrayData::reallocateUnaligned(QArrayData*, unsigned long, unsigned long, QFlags<QArrayData::AllocationOption>) () from /lib64/libQt5Core.so.5
#3  0x00007f9160202d1a in QString::reallocData(unsigned int, bool) () from /lib64/libQt5Core.so.5
#4  0x00007f9160202da5 in QString::resize(int) () from /lib64/libQt5Core.so.5
#5  0x00007f9160208709 in QString::vasprintf(char const*, __va_list_tag*) () from /lib64/libQt5Core.so.5
#6  0x00007f9160181d2b in qt_message(QtMsgType, QMessageLogContext const&, char const*, __va_list_tag*) () from /lib64/libQt5Core.so.5
#7  0x00007f9160182add in QMessageLogger::warning(char const*, ...) const () from /lib64/libQt5Core.so.5
#8  0x00007f91603921c9 in socketNotifierSourceCheck(_GSource*) () from /lib64/libQt5Core.so.5
#9  0x00007f9156485909 in g_main_context_check () from /lib64/libglib-2.0.so.0
#10 0x00007f9156485e80 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#11 0x00007f9156485fec in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#12 0x00007f916039233f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#13 0x00007f91603400ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#14 0x00007f91601918ba in QThread::exec() () from /lib64/libQt5Core.so.5
#15 0x00007f91616b2479 in QDBusConnectionManager::run() () from /lib64/libQt5DBus.so.5
#16 0x00007f9160195b92 in QThreadPrivate::start(void*) () from /lib64/libQt5Core.so.5
#17 0x00007f915a18b61b in start_thread () from /lib64/libpthread.so.0
#18 0x00007f915f53391f in clone () from /lib64/libc.so.6

Thread 4 (Thread 0x7f913e4e7700 (LWP 2491)):
#0  0x00007f915f52736b in poll () from /lib64/libc.so.6
#1  0x00007f9156485ed9 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f9156486272 in g_main_loop_run () from /lib64/libglib-2.0.so.0
#3  0x00007f9142101b36 in gdbus_shared_thread_func () from /lib64/libgio-2.0.so.0
#4  0x00007f91564ad4c6 in g_thread_proxy () from /lib64/libglib-2.0.so.0
#5  0x00007f915a18b61b in start_thread () from /lib64/libpthread.so.0
#6  0x00007f915f53391f in clone () from /lib64/libc.so.6

Thread 3 (Thread 0x7f913ece8700 (LWP 2490)):
#0  0x00007f915f522888 in read () from /lib64/libc.so.6
#1  0x00007f91564ca0e0 in g_wakeup_acknowledge () from /lib64/libglib-2.0.so.0
#2  0x00007f91564859e8 in g_main_context_check () from /lib64/libglib-2.0.so.0
#3  0x00007f9156485e80 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#4  0x00007f9156485fec in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#5  0x00007f9156486031 in glib_worker_main () from /lib64/libglib-2.0.so.0
#6  0x00007f91564ad4c6 in g_thread_proxy () from /lib64/libglib-2.0.so.0
#7  0x00007f915a18b61b in start_thread () from /lib64/libpthread.so.0
#8  0x00007f915f53391f in clone () from /lib64/libc.so.6

Thread 2 (Thread 0x7f913f4e9700 (LWP 2489)):
#0  0x00007f915f52736b in poll () from /lib64/libc.so.6
#1  0x00007f9156485ed9 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#2  0x00007f9156485fec in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#3  0x00007f913f4f142d in dconf_gdbus_worker_thread () from /usr/lib64/gio/modules/libdconfsettings.so
#4  0x00007f91564ad4c6 in g_thread_proxy () from /lib64/libglib-2.0.so.0
#5  0x00007f915a18b61b in start_thread () from /lib64/libpthread.so.0
#6  0x00007f915f53391f in clone () from /lib64/libc.so.6

Thread 1 (Thread 0x7f91673aa940 (LWP 2457)):
[KCrash Handler]
#6  0x00007f915f4a4c2f in malloc_consolidate.part () from /lib64/libc.so.6
#7  0x00007f915f4a93d8 in _int_malloc () from /lib64/libc.so.6
#8  0x00007f915f4aca0d in malloc () from /lib64/libc.so.6
#9  0x00007f9160196552 in QArrayData::allocate(unsigned long, unsigned long, unsigned long, QFlags<QArrayData::AllocationOption>) () from /lib64/libQt5Core.so.5
#10 0x00007f9160202c94 in QString::reallocData(unsigned int, bool) () from /lib64/libQt5Core.so.5
#11 0x00007f9160204e68 in QString::replace(QChar, QChar, Qt::CaseSensitivity) () from /lib64/libQt5Core.so.5
#12 0x00007f9161210e5d in QAbstractItemDelegatePrivate::textForRole(Qt::ItemDataRole, QVariant const&, QLocale const&, int) const () from /lib64/libQt5Widgets.so.5
#13 0x00007f916121827f in QStyledItemDelegate::displayText(QVariant const&, QLocale const&) const () from /lib64/libQt5Widgets.so.5
#14 0x00007f9161219ebe in QStyledItemDelegate::initStyleOption(QStyleOptionViewItem*, QModelIndex const&) const () from /lib64/libQt5Widgets.so.5
#15 0x00007f916121892c in QStyledItemDelegate::paint(QPainter*, QStyleOptionViewItem const&, QModelIndex const&) const () from /lib64/libQt5Widgets.so.5
#16 0x00007f916125af02 in QTreeView::drawRow(QPainter*, QStyleOptionViewItem const&, QModelIndex const&) const () from /lib64/libQt5Widgets.so.5
#17 0x00007f91612605ed in QTreeView::drawTree(QPainter*, QRegion const&) const () from /lib64/libQt5Widgets.so.5
#18 0x00007f9161264f75 in QTreeView::paintEvent(QPaintEvent*) () from /lib64/libQt5Widgets.so.5
#19 0x00007f9160fe8e28 in QWidget::event(QEvent*) () from /lib64/libQt5Widgets.so.5
#20 0x00007f9161089d5e in QFrame::event(QEvent*) () from /lib64/libQt5Widgets.so.5
#21 0x00007f91611fe0bb in QAbstractItemView::viewportEvent(QEvent*) () from /lib64/libQt5Widgets.so.5
#22 0x00007f9161265e8c in QTreeView::viewportEvent(QEvent*) () from /lib64/libQt5Widgets.so.5
#23 0x00007f91603410fc in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#24 0x00007f9160faa685 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#25 0x00007f9160fb1ef4 in QApplication::notify(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#26 0x00007f9160341367 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#27 0x00007f9160fe1f2a in QWidgetPrivate::sendPaintEvent(QRegion const&) () from /lib64/libQt5Widgets.so.5
#28 0x00007f9160fe24ea in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib64/libQt5Widgets.so.5
#29 0x00007f9160fb9be0 in QWidgetBackingStore::doSync() () from /lib64/libQt5Widgets.so.5
#30 0x00007f9160fb9e85 in QWidgetBackingStore::sync() () from /lib64/libQt5Widgets.so.5
#31 0x00007f9160fd14bf in QWidgetPrivate::syncBackingStore() () from /lib64/libQt5Widgets.so.5
#32 0x00007f9160fe8f98 in QWidget::event(QEvent*) () from /lib64/libQt5Widgets.so.5
#33 0x00007f91610fc95b in QMainWindow::event(QEvent*) () from /lib64/libQt5Widgets.so.5
#34 0x00007f916500f0c7 in KMainWindow::event(QEvent*) () from /lib64/libKF5XmlGui.so.5
#35 0x00007f9165053e75 in KXmlGuiWindow::event(QEvent*) () from /lib64/libKF5XmlGui.so.5
#36 0x00007f9160faa6ac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#37 0x00007f9160fb1ef4 in QApplication::notify(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#38 0x00007f9160341367 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#39 0x00007f9160343aeb in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib64/libQt5Core.so.5
#40 0x00007f9160392553 in postEventSourceDispatch(_GSource*, int (*)(void*), void*) () from /lib64/libQt5Core.so.5
#41 0x00007f9156485bb7 in g_main_context_dispatch () from /lib64/libglib-2.0.so.0
#42 0x00007f9156485f60 in g_main_context_iterate.isra () from /lib64/libglib-2.0.so.0
#43 0x00007f9156485fec in g_main_context_iteration () from /lib64/libglib-2.0.so.0
#44 0x00007f916039233f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#45 0x00007f91603400ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib64/libQt5Core.so.5
#46 0x00007f9160348744 in QCoreApplication::exec() () from /lib64/libQt5Core.so.5
#47 0x0000557e1178a12a in main ()

Possible duplicates by query: bug 387754.

Reported using DrKonqi

Comment 1 André Fettouhi 2018-02-14 08:59:09 UTC

I can confirm this bug on Arch Linux. I've had this issue for well over a year now with ktorrent. I think that the issue already existed back in the 4.x version. I happens every time I delete the very last torrent I've downloaded.

Comment 2 Christoph Feck 2018-02-22 01:31:14 UTC

*** Bug 390315 has been marked as a duplicate of this bug. ***

Comment 3 franz 2019-02-02 12:11:10 UTC

Created attachment 117785 [details]
New crash information added by DrKonqi

ktorrent (5.1.0) using Qt 5.9.5

- What I was doing when the application crashed:

Removed all completeted torrents (without data) in the gui.

-- Backtrace (Reduced):
#7  0x00007f79ee0d505c in QStyledItemDelegate::initStyleOption(QStyleOptionViewItem*, QModelIndex const&) const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#8  0x00007f79ee0d3edc in QStyledItemDelegate::paint(QPainter*, QStyleOptionViewItem const&, QModelIndex const&) const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007f79ee1165e2 in QTreeView::drawRow(QPainter*, QStyleOptionViewItem const&, QModelIndex const&) const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f79ee11bb1d in QTreeView::drawTree(QPainter*, QRegion const&) const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f79ee1205c5 in QTreeView::paintEvent(QPaintEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5

Comment 4 franz 2019-02-02 12:14:15 UTC

> Removed all completeted torrents (without data) in the gui.

I meant also that I removed all torrents (all were completed)

Comment 5 Stelios 2019-03-28 05:53:36 UTC

Created attachment 119094 [details]
New crash information added by DrKonqi

ktorrent (5.1.1) using Qt 5.11.1

- What I was doing when the application crashed: I removed the last torrent from the list. Ktorrent crashes every time i do that.

-- Backtrace (Reduced):
#7  0x00007f759509618c in QStyledItemDelegate::initStyleOption(QStyleOptionViewItem*, QModelIndex const&) const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#8  0x00007f75950950a7 in QStyledItemDelegate::paint(QPainter*, QStyleOptionViewItem const&, QModelIndex const&) const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007f75950d7562 in QTreeView::drawRow(QPainter*, QStyleOptionViewItem const&, QModelIndex const&) const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f75950dc777 in QTreeView::drawTree(QPainter*, QRegion const&) const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f75950e1135 in QTreeView::paintEvent(QPaintEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5

Comment 6 Yosef Murphey 2019-05-20 14:27:42 UTC

Created attachment 120201 [details]
New crash information added by DrKonqi

ktorrent (5.1.1) using Qt 5.11.3

- What I was doing when the application crashed:
had removed last torrent from queue after completion.  KTorrent showed torrents as 0/1.  Crashed when I attempted to change from Magnet to Queue Manager view.
- Custom settings of the application:
one active torrent allowed

-- Backtrace (Reduced):
#7  0x00007f9ba7f4145c in QStyledItemDelegate::initStyleOption(QStyleOptionViewItem*, QModelIndex const&) const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#8  0x00007f9ba7f40377 in QStyledItemDelegate::paint(QPainter*, QStyleOptionViewItem const&, QModelIndex const&) const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007f9ba7f82922 in QTreeView::drawRow(QPainter*, QStyleOptionViewItem const&, QModelIndex const&) const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f9ba7f87a47 in QTreeView::drawTree(QPainter*, QRegion const&) const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f9ba7f8c483 in QTreeView::paintEvent(QPaintEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5

Comment 7 Christoph Feck 2019-10-24 08:29:04 UTC

*** Bug 412324 has been marked as a duplicate of this bug. ***

Comment 8 Christoph Feck 2019-10-24 12:42:18 UTC

*** Bug 412510 has been marked as a duplicate of this bug. ***

Comment 9 Christoph Feck 2019-12-19 16:20:26 UTC

*** Bug 414403 has been marked as a duplicate of this bug. ***

Comment 10 Nicolas Gutierrez 2020-03-24 21:20:28 UTC

Created attachment 126991 [details]
New crash information added by DrKonqi

ktorrent (5.1.0) using Qt 5.9.5

- What I was doing when the application crashed:

I was going to delete a torrent already downloaded and it crashed.

- Unusual behavior I noticed:

Just after click to delete the torrent application freezes and sudenly crashed. When i reopen ktorrent again it shows no torrents on the main list.

-- Backtrace (Reduced):
#7  0x00007f440370a0ac in QStyledItemDelegate::initStyleOption(QStyleOptionViewItem*, QModelIndex const&) const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#8  0x00007f4403708f2c in QStyledItemDelegate::paint(QPainter*, QStyleOptionViewItem const&, QModelIndex const&) const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007f440374b632 in QTreeView::drawRow(QPainter*, QStyleOptionViewItem const&, QModelIndex const&) const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f4403750b6d in QTreeView::drawTree(QPainter*, QRegion const&) const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f4403755615 in QTreeView::paintEvent(QPaintEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5

Comment 11 Christoph Feck 2020-04-15 11:01:54 UTC

*** Bug 419367 has been marked as a duplicate of this bug. ***

Comment 12 Christoph Feck 2020-04-15 11:02:54 UTC

*** Bug 419693 has been marked as a duplicate of this bug. ***

Comment 13 Christoph Feck 2020-04-28 08:38:52 UTC

*** Bug 419571 has been marked as a duplicate of this bug. ***

Comment 14 Alexey Min 2020-06-02 15:31:46 UTC

Created attachment 129002 [details]
New crash information added by DrKonqi

ktorrent (5.1.2) using Qt 5.14.2

- What I was doing when the application crashed:

When I started KTorrent it said that torrent file was missing, and suggested to recreate it. I refused (Cancel), and deleted torrent (rclick -> delete torrent + data). KTorrent crashed. After restart torrent was not present in list, so I could not reproduce the crash..

-- Backtrace (Reduced):
#6  bt::TorrentInterface::getDisplayName (this=0x5556f80e5610) at /usr/include/qt5/QtCore/qstring.h:942
#7  kt::QueueManagerModel::data (this=<optimized out>, index=..., role=<optimized out>) at /usr/src/debug/net-p2p/ktorrent-5.1.2-r2/ktorrent-5.1.2/ktorrent/tools/queuemanagermodel.cpp:235
#8  0x00007f47a86f3684 in QModelIndex::data (arole=0, this=0x7ffc67c35450) at /usr/src/debug/dev-qt/qtwidgets-5.14.2/qtbase-everywhere-src-5.14.2/include/QtCore/../../src/corelib/itemmodels/qabstractitemmodel.h:460
#9  QStyledItemDelegate::initStyleOption (this=0x5556f81fdb70, option=0x7ffc67c352f0, index=...) at /usr/src/debug/dev-qt/qtwidgets-5.14.2/qtbase-everywhere-src-5.14.2/src/widgets/itemviews/qstyleditemdelegate.cpp:345
#10 0x00007f47a86f2c57 in QStyledItemDelegate::sizeHint (this=0x5556f81fdb70, option=..., index=...) at /usr/src/debug/dev-qt/qtwidgets-5.14.2/qtbase-everywhere-src-5.14.2/src/widgets/itemviews/qstyleditemdelegate.cpp:410

Comment 15 Christoph Feck 2020-12-21 23:35:31 UTC

*** Bug 429599 has been marked as a duplicate of this bug. ***

Comment 16 Christoph Feck 2020-12-21 23:35:58 UTC

*** Bug 429495 has been marked as a duplicate of this bug. ***

Comment 17 Andrew 2021-02-13 21:15:21 UTC

Have similar crash on Fedora 33, ktorrent-5.2.0-5.fc33.x86_64
Started ktorrent with 3 active torrents, all on absent storage (forgot to mount it).
Called exit from ktorrent and it crashed after this.
Might be same: bug #429951

Application: KTorrent (ktorrent), signal: Segmentation fault
[KCrash Handler]
#4  0x00007fd8e5dd8c98 in vtable for __cxxabiv1::__si_class_type_info () from /lib64/libstdc++.so.6
#5  0x0000562a52cf60ed in kt::ViewModel::data(QModelIndex const&, int) const ()
#6  0x00007fd8e6d89034 in QStyledItemDelegate::initStyleOption(QStyleOptionViewItem*, QModelIndex const&) const () from /lib64/libQt5Widgets.so.5
#7  0x00007fd8e6d887ea in QStyledItemDelegate::sizeHint(QStyleOptionViewItem const&, QModelIndex const&) const () from /lib64/libQt5Widgets.so.5
#8  0x0000562a52cf8930 in kt::ViewDelegate::sizeHint(QStyleOptionViewItem const&, QModelIndex const&) const ()
#9  0x00007fd8e6dcb0ce in QTreeView::indexRowSizeHint(QModelIndex const&) const () from /lib64/libQt5Widgets.so.5
#10 0x00007fd8e6dd234c in QTreeViewPrivate::layout(int, bool, bool) () from /lib64/libQt5Widgets.so.5
#11 0x00007fd8e6dd81b1 in QTreeView::doItemsLayout() () from /lib64/libQt5Widgets.so.5
#12 0x00007fd8e6dcff6d in QTreeViewPrivate::updateScrollBars() () from /lib64/libQt5Widgets.so.5
#13 0x00007fd8e6dd9bf5 in QTreeView::updateGeometries() () from /lib64/libQt5Widgets.so.5
#14 0x00007fd8e609a3c0 in void doActivate<false>(QObject*, int, void**) () from /lib64/libQt5Core.so.5
#15 0x00007fd8e6d7c4de in QHeaderView::viewportEvent(QEvent*) () from /lib64/libQt5Widgets.so.5
#16 0x00007fd8e606a995 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#17 0x00007fd8e6affeb2 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib64/libQt5Widgets.so.5
#18 0x00007fd8e606abd8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib64/libQt5Core.so.5
#19 0x00007fd8e6b3b8b3 in QWidgetPrivate::hideChildren(bool) () from /lib64/libQt5Widgets.so.5
#20 0x00007fd8e6b3b8a0 in QWidgetPrivate::hideChildren(bool) () from /lib64/libQt5Widgets.so.5
#21 0x00007fd8e6b3b8a0 in QWidgetPrivate::hideChildren(bool) () from /lib64/libQt5Widgets.so.5
#22 0x00007fd8e6b3b8a0 in QWidgetPrivate::hideChildren(bool) () from /lib64/libQt5Widgets.so.5
#23 0x00007fd8e6b3b8a0 in QWidgetPrivate::hideChildren(bool) () from /lib64/libQt5Widgets.so.5
#24 0x00007fd8e6b3b8a0 in QWidgetPrivate::hideChildren(bool) () from /lib64/libQt5Widgets.so.5
#25 0x00007fd8e6b3b8a0 in QWidgetPrivate::hideChildren(bool) () from /lib64/libQt5Widgets.so.5
#26 0x00007fd8e6b3b8a0 in QWidgetPrivate::hideChildren(bool) () from /lib64/libQt5Widgets.so.5
#27 0x00007fd8e6b3ba8f in QWidgetPrivate::hide_helper() () from /lib64/libQt5Widgets.so.5
#28 0x00007fd8e6b40858 in QWidgetPrivate::setVisible(bool) () from /lib64/libQt5Widgets.so.5
#29 0x00007fd8e6b3be42 in QWidgetPrivate::close_helper(QWidgetPrivate::CloseMode) () from /lib64/libQt5Widgets.so.5
#30 0x00007fd8e6b3c41c in QWidget::~QWidget() () from /lib64/libQt5Widgets.so.5
#31 0x0000562a52c9c46c in kt::GUI::~GUI() ()
#32 0x0000562a52c82a9f in main ()
[Inferior 1 (process 3041) detached]

Comment 18 Andrew 2021-03-18 14:55:48 UTC

Git it again on same scenario: start with storage not available, exit.
Similar: bug# 433869, bug#409848

Comment 19 Jack Hill 2023-11-12 10:54:19 UTC

*** Bug 454454 has been marked as a duplicate of this bug. ***