Application: ktorrent (5.1.0)

Qt Version: 5.9.1
Frameworks Version: 5.38.0
Operating System: Linux 4.15.3-ck1+ x86_64
Distribution: Ubuntu 17.10

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

I had about a dozen torrents and I highlighted them all and deleted them (just the torrents, not the associated files), but the lower window which showed status of a torrent didn't disappear (coincidence?). I went to minimise ktorrent by hitting the close window cross and it crashed.

-- 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 0x7fd254c4e440 (LWP 3283))]

Thread 8 (Thread 0x7fd206dfa700 (LWP 13371)):
#0  0x00007fd24ee1b951 in __GI___poll (fds=0x7fd1f8007df0, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fd247333451 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007fd247324e10 in pa_mainloop_poll () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007fd2473254a0 in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007fd247325530 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007fd247333399 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007fd2438e3ed8 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-10.0.so
#7  0x00007fd24a92e7fc in start_thread (arg=0x7fd206dfa700) at pthread_create.c:465
#8  0x00007fd24ee27b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fd2053f0700 (LWP 11660)):
#0  0x00007fd24a935072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x56311d8ec564) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fd24a935072 in __pthread_cond_wait_common (abstime=0x0, mutex=0x56311d8ec510, cond=0x56311d8ec538) at pthread_cond_wait.c:502
#2  0x00007fd24a935072 in __pthread_cond_wait (cond=0x56311d8ec538, mutex=0x56311d8ec510) at pthread_cond_wait.c:655
#3  0x00007fd24fa936cb in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fd2544bf413 in  () at /usr/lib/x86_64-linux-gnu/libKF5Torrent.so.6
#5  0x00007fd24fa9229d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fd24a92e7fc in start_thread (arg=0x7fd2053f0700) at pthread_create.c:465
#7  0x00007fd24ee27b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fd205bf1700 (LWP 11659)):
#0  0x00007fd2544bc45a in  () at /usr/lib/x86_64-linux-gnu/libKF5Torrent.so.6
#1  0x00007fd2544bcc09 in  () at /usr/lib/x86_64-linux-gnu/libKF5Torrent.so.6
#2  0x00007fd24fa9229d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fd24a92e7fc in start_thread (arg=0x7fd205bf1700) at pthread_create.c:465
#4  0x00007fd24ee27b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fd2063f2700 (LWP 11658)):
#0  0x00007fd24edebbf8 in __GI___nanosleep (requested_time=0x7fd2063f1cb0, remaining=0x7fd2063f1cb0) at ../sysdeps/unix/sysv/linux/nanosleep.c:27
#1  0x00007fd24fcc7e0d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fd2544bcbc8 in  () at /usr/lib/x86_64-linux-gnu/libKF5Torrent.so.6
#3  0x00007fd2544bcc09 in  () at /usr/lib/x86_64-linux-gnu/libKF5Torrent.so.6
#4  0x00007fd24fa9229d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fd24a92e7fc in start_thread (arg=0x7fd2063f2700) at pthread_create.c:465
#6  0x00007fd24ee27b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fd2362bb700 (LWP 3328)):
#0  0x00007fd24ee1b951 in __GI___poll (fds=0x7fd224004eb0, nfds=1, timeout=405) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fd248e5d169 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd248e5d27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd24fcc849b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fd24fc6de3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fd24fa8d3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fd24fa9229d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fd24a92e7fc in start_thread (arg=0x7fd2362bb700) at pthread_create.c:465
#8  0x00007fd24ee27b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fd23715a700 (LWP 3327)):
#0  0x00007fd24ee1b951 in __GI___poll (fds=0x7fd22c001cf0, nfds=1, timeout=9628) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fd248e5d169 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd248e5d27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd24fcc849b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fd24fc6de3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fd24fa8d3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fd24fa9229d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fd24a92e7fc in start_thread (arg=0x7fd23715a700) at pthread_create.c:465
#8  0x00007fd24ee27b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fd23c98c700 (LWP 3302)):
#0  0x00007fd24ee1b951 in __GI___poll (fds=0x7fd23001e5a0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fd248e5d169 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fd248e5d27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fd24fcc849b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fd24fc6de3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fd24fa8d3ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fd2510efe45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fd24fa9229d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fd24a92e7fc in start_thread (arg=0x7fd23c98c700) at pthread_create.c:465
#9  0x00007fd24ee27b5f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fd254c4e440 (LWP 3283)):
[KCrash Handler]
#6  0x000056311b6365c1 in  ()
#7  0x00007fd250caf1bc in QStyledItemDelegate::initStyleOption(QStyleOptionViewItem*, QModelIndex const&) const () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#8  0x00007fd250cae03c in QStyledItemDelegate::paint(QPainter*, QStyleOptionViewItem const&, QModelIndex const&) const () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007fd250c6ede2 in QTreeView::drawRow(QPainter*, QStyleOptionViewItem const&, QModelIndex const&) const () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007fd250c744cd in QTreeView::drawTree(QPainter*, QRegion const&) const () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007fd250c78e05 in QTreeView::paintEvent(QPaintEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007fd250a2adc8 in QWidget::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007fd250b0a2de in QFrame::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#14 0x00007fd250c3bc4b in QAbstractItemView::viewportEvent(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007fd250c79d1c in QTreeView::viewportEvent(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007fd24fc6facc in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007fd2509ea445 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007fd2509f1d34 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007fd24fc6fde8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007fd250a23f6a in QWidgetPrivate::sendPaintEvent(QRegion const&) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007fd250a2452a in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007fd250a25190 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007fd250a25319 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007fd250a25319 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007fd250a25319 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x00007fd250a24136 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007fd250a25190 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007fd250a24136 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007fd250a25190 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007fd250a24136 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007fd250a25190 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#32 0x00007fd250a24136 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007fd250a25190 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007fd250a24136 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#35 0x00007fd250a25190 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007fd250a24136 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#37 0x00007fd250a25190 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#38 0x00007fd250a25319 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#39 0x00007fd250a25319 in QWidgetPrivate::paintSiblingsRecursive(QPaintDevice*, QList<QObject*> const&, int, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#40 0x00007fd250a24136 in QWidgetPrivate::drawWidget(QPaintDevice*, QRegion const&, QPoint const&, int, QPainter*, QWidgetBackingStore*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#41 0x00007fd2509f9a84 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#42 0x00007fd2509f9cc5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#43 0x00007fd250a1353f in QWidgetPrivate::syncBackingStore() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#44 0x00007fd250a2af38 in QWidget::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#45 0x00007fd250b18bab in QMainWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#46 0x00007fd25360ccd7 in KMainWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#47 0x00007fd253652255 in KXmlGuiWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#48 0x00007fd2509ea46c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#49 0x00007fd2509f1d34 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#50 0x00007fd24fc6fde8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#51 0x00007fd24fc7255d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#52 0x00007fd24fcc8e53 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#53 0x00007fd248e5cfb7 in g_main_context_dispatch () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#54 0x00007fd248e5d1f0 in  () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#55 0x00007fd248e5d27c in g_main_context_iteration () at /lib/x86_64-linux-gnu/libglib-2.0.so.0
#56 0x00007fd24fcc847f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#57 0x00007fd24fc6de3a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#58 0x00007fd24fc76da4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#59 0x000056311b60202a in  ()
#60 0x00007fd24ed341c1 in __libc_start_main (main=0x56311b5ffd60, argc=3, argv=0x7ffc760672d8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc760672c8) at ../csu/libc-start.c:308
#61 0x000056311b602a0a in _start ()

Reported using DrKonqi