Application: ktorrent (5.1.2)

Qt Version: 5.12.4
Frameworks Version: 5.62.0
Operating System: Linux 5.3.0-23-generic x86_64
Distribution: Ubuntu 19.10

-- Information about the crash:
- What I was doing when the application crashed:
i was removing completed torrent whilst keeping data and application just closed done the same when i was trying to add the torrent too if that helps

The crash can be reproduced every time.

-- Backtrace:
Application: KTorrent (ktorrent), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fe93a0e8d80 (LWP 7276))]

Thread 6 (Thread 0x7fe90617f700 (LWP 7312)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55c82a4d63c0) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55c82a4d6370, cond=0x55c82a4d6398) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55c82a4d6398, mutex=0x55c82a4d6370) at pthread_cond_wait.c:638
#3  0x00007fe93e788def in QWaitCondition::wait(QMutex*, QDeadlineTimer) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe93e788ee1 in QWaitCondition::wait(QMutex*, unsigned long) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe9405f6db9 in ?? () from /lib/x86_64-linux-gnu/libKF5Torrent.so.6
#6  0x00007fe93e782cc2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fe93d6d4669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#8  0x00007fe93e29e323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fe920896700 (LWP 7311)):
#0  0x00007fe93e261d45 in __GI___nanosleep (requested_time=0x7fe920895d60, remaining=0x7fe920895d60) at ../sysdeps/unix/sysv/linux/nanosleep.c:28
#1  0x00007fe93e9a0fe5 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fe9405f40ad in ?? () from /lib/x86_64-linux-gnu/libKF5Torrent.so.6
#3  0x00007fe9405f4689 in ?? () from /lib/x86_64-linux-gnu/libKF5Torrent.so.6
#4  0x00007fe93e782cc2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe93d6d4669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007fe93e29e323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fe92171e700 (LWP 7310)):
#0  0x00007fe93e291c2f in __GI___poll (fds=0x7fe9140276b0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fe9405f73d0 in net::Poll::poll(int) () from /lib/x86_64-linux-gnu/libKF5Torrent.so.6
#2  0x00007fe9405f43a2 in ?? () from /lib/x86_64-linux-gnu/libKF5Torrent.so.6
#3  0x00007fe9405f443a in ?? () from /lib/x86_64-linux-gnu/libKF5Torrent.so.6
#4  0x00007fe9405f4689 in ?? () from /lib/x86_64-linux-gnu/libKF5Torrent.so.6
#5  0x00007fe93e782cc2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe93d6d4669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#7  0x00007fe93e29e323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fe932dee700 (LWP 7282)):
#0  0x00007ffeeacfd72a in ?? ()
#1  0x00007ffeeacfd918 in clock_gettime ()
#2  0x00007fe93e2ac12b in __GI___clock_gettime (clock_id=1, tp=0x7fe932dedb80) at ../sysdeps/unix/sysv/linux/clock_gettime.c:33
#3  0x00007fe93e9a0f85 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe93e99f82d in QTimerInfoList::updateCurrentTime() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe93e9a1e65 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe93ce5b471 in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fe93ce5b9e2 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007fe93ce5bb73 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fe93e9a16c3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fe93e94863b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007fe93e781a75 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fe93e782cc2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007fe93d6d4669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#14 0x00007fe93e29e323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fe933fff700 (LWP 7280)):
#0  0x00007fe93cea7c68 in g_mutex_unlock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fe93ce5ba33 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fe93ce5bb73 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fe93e9a16c3 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fe93e94863b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fe93e781a75 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fe93f8a3efa in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fe93e782cc2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fe93d6d4669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9  0x00007fe93e29e323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fe93a0e8d80 (LWP 7276)):
[KCrash Handler]
#6  0x000055c827b7ba2f in ?? ()
#7  0x00007fe93f5efc18 in QStyledItemDelegate::initStyleOption(QStyleOptionViewItem*, QModelIndex const&) const () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#8  0x00007fe93f5eeac0 in QStyledItemDelegate::paint(QPainter*, QStyleOptionViewItem const&, QModelIndex const&) const () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007fe93f6348ca in QTreeView::drawRow(QPainter*, QStyleOptionViewItem const&, QModelIndex const&) const () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007fe93f639de3 in QTreeView::drawTree(QPainter*, QRegion const&) const () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007fe93f63e9d7 in QTreeView::paintEvent(QPaintEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007fe93f3a004e in QWidget::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007fe93f44d782 in QFrame::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007fe93f5d17d2 in QAbstractItemView::viewportEvent(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007fe93f63f98f in QTreeView::viewportEvent(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007fe93e9497ab in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fe93f35da75 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007fe93f366e00 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007fe93e949a9a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007fe93f398bba in QWidgetPrivate::sendPaintEvent(QRegion const&) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007fe93f3993f9 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007fe93f39a113 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007fe93f399ff6 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007fe93f39910c in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007fe93f39a113 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x00007fe93f39910c in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007fe93f39a113 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007fe93f39910c in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007fe93f39a113 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007fe93f399ff6 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007fe93f399ff6 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#32 0x00007fe93f39910c in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007fe93f39a113 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007fe93f39910c in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#35 0x00007fe93f39a113 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007fe93f39910c in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#37 0x00007fe93f39a113 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#38 0x00007fe93f399ff6 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#39 0x00007fe93f39910c in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#40 0x00007fe93f36fb5a in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#41 0x00007fe93f36fef1 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#42 0x00007fe93f387fa5 in QWidgetPrivate::syncBackingStore() () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#43 0x00007fe93f3a0408 in QWidget::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#44 0x00007fe93f4b4828 in QMainWindow::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#45 0x00007fe9402e278b in KMainWindow::event(QEvent*) () from /lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#46 0x00007fe94032eb4b in KXmlGuiWindow::event(QEvent*) () from /lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#47 0x00007fe93f35da86 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#48 0x00007fe93f366e00 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#49 0x00007fe93e949a9a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#50 0x00007fe93e94c718 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#51 0x00007fe93e9a20a7 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#52 0x00007fe93ce5b84d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#53 0x00007fe93ce5bad0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#54 0x00007fe93ce5bb73 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#55 0x00007fe93e9a16a5 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#56 0x00007fe93e94863b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#57 0x00007fe93e9503a6 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#58 0x000055c827b439ea in ?? ()
#59 0x00007fe93e1a31e3 in __libc_start_main (main=0x55c827b41670, argc=2, argv=0x7ffeeacb5cd8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffeeacb5cc8) at ../csu/libc-start.c:308
#60 0x000055c827b445be in _start ()
[Inferior 1 (process 7276) detached]

The reporter indicates this bug may be a duplicate of or related to bug 388803.

Possible duplicates by query: bug 412510, bug 412324.

Reported using DrKonqi