Bug 389915

Application: ktorrent (5.1.0)

Qt Version: 5.10.0
Frameworks Version: 5.42.0
Operating System: Linux 4.14.15-1-ARCH x86_64
Distribution: "Arch Linux"

-- Information about the crash:
On exit, application crashes

The crash can be reproduced sometimes.

-- Backtrace:
Application: KTorrent (ktorrent), signal: Segmentation fault
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f59b38bb380 (LWP 4193))]

Thread 5 (Thread 0x7f597cd49700 (LWP 4658)):
#0  0x00007f59ad95b3d8 in read () at /usr/lib/libc.so.6
#1  0x00007f59a0dc87c2 in pa_read () at /usr/lib/pulseaudio/libpulsecommon-11.1.so
#2  0x00007f59a4b087af in pa_mainloop_prepare () at /usr/lib/libpulse.so.0
#3  0x00007f59a4b09241 in pa_mainloop_iterate () at /usr/lib/libpulse.so.0
#4  0x00007f59a4b09301 in pa_mainloop_run () at /usr/lib/libpulse.so.0
#5  0x00007f59a4b176ae in  () at /usr/lib/libpulse.so.0
#6  0x00007f59a0df881c in  () at /usr/lib/pulseaudio/libpulsecommon-11.1.so
#7  0x00007f59a91c308c in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f59ad969e7f in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f592e7fc700 (LWP 4241)):
#0  0x00007f59ad95f97b in poll () at /usr/lib/libc.so.6
#1  0x00007f599fdb71bd in  () at /usr/lib/libresolv.so.2
#2  0x00007f599fdb4c81 in __res_context_query () at /usr/lib/libresolv.so.2
#3  0x00007f596c5f5e7c in _nss_dns_gethostbyaddr2_r () at /usr/lib/libnss_dns.so.2
#4  0x00007f596c5f6163 in _nss_dns_gethostbyaddr_r () at /usr/lib/libnss_dns.so.2
#5  0x00007f59ad97bcd1 in gethostbyaddr_r@@GLIBC_2.2.5 () at /usr/lib/libc.so.6
#6  0x00007f59ad984251 in gni_host_inet_name.isra () at /usr/lib/libc.so.6
#7  0x00007f59ad984983 in getnameinfo () at /usr/lib/libc.so.6
#8  0x00007f59b30f0308 in  () at /usr/lib/libKF5Torrent.so.6
#9  0x00007f59b30f0a41 in  () at /usr/lib/libKF5Torrent.so.6
#10 0x00007f59ae5c4b2d in  () at /usr/lib/libQt5Core.so.5
#11 0x00007f59a91c308c in start_thread () at /usr/lib/libpthread.so.0
#12 0x00007f59ad969e7f in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f5994a79700 (LWP 4198)):
#0  0x00007f59a6b18b94 in g_mutex_unlock () at /usr/lib/libglib-2.0.so.0
#1  0x00007f59a6ad1b8b in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#2  0x00007f59a6ad2081 in  () at /usr/lib/libglib-2.0.so.0
#3  0x00007f59a6ad210e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#4  0x00007f59ae80dd24 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f59ae7afe9b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#6  0x00007f59ae5bf78e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#7  0x00007f59ae5c4b2d in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f59a91c308c in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f59ad969e7f in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f599648b700 (LWP 4196)):
#0  0x00007f59ad95f97b in poll () at /usr/lib/libc.so.6
#1  0x00007f59a6ad1ff3 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f59a6ad210e in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f59ae80dd24 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f59ae7afe9b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f59ae5bf78e in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f59afc47416 in  () at /usr/lib/libQt5DBus.so.5
#7  0x00007f59ae5c4b2d in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f59a91c308c in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f59ad969e7f in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f59b38bb380 (LWP 4193)):
[KCrash Handler]
#5  0x00007f59ae63be13 in  () at /usr/lib/libQt5Core.so.5
#6  0x00007f59ae641dc8 in QString::replace(QChar, QChar, Qt::CaseSensitivity) () at /usr/lib/libQt5Core.so.5
#7  0x00007f59af7a1be7 in  () at /usr/lib/libQt5Widgets.so.5
#8  0x00007f59af7a9250 in QStyledItemDelegate::displayText(QVariant const&, QLocale const&) const () at /usr/lib/libQt5Widgets.so.5
#9  0x00007f59af7aaf0f in QStyledItemDelegate::initStyleOption(QStyleOptionViewItem*, QModelIndex const&) const () at /usr/lib/libQt5Widgets.so.5
#10 0x00007f59af7a9fb7 in QStyledItemDelegate::sizeHint(QStyleOptionViewItem const&, QModelIndex const&) const () at /usr/lib/libQt5Widgets.so.5
#11 0x00007f59af7eef06 in QTreeView::indexRowSizeHint(QModelIndex const&) const () at /usr/lib/libQt5Widgets.so.5
#12 0x00007f59af7ef8bf in QTreeViewPrivate::layout(int, bool, bool) () at /usr/lib/libQt5Widgets.so.5
#13 0x00007f59af7f7ac0 in QTreeView::doItemsLayout() () at /usr/lib/libQt5Widgets.so.5
#14 0x00007f59af7f1f86 in QTreeViewPrivate::updateScrollBars() () at /usr/lib/libQt5Widgets.so.5
#15 0x00007f59af7f96ae in QTreeView::updateGeometries() () at /usr/lib/libQt5Widgets.so.5
#16 0x00007f59af56cba2 in QWidget::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#17 0x00007f59af60fccf in QFrame::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#18 0x00007f59af78e764 in QAbstractItemView::viewportEvent(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#19 0x00007f59af7f832d in QTreeView::viewportEvent(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#20 0x00007f59ae7b151c in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#21 0x00007f59af52bea8 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#22 0x00007f59af5338a6 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#23 0x00007f59ae7b1850 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#24 0x00007f59af56480d in QWidgetPrivate::sendPendingMoveAndResizeEvents(bool, bool) () at /usr/lib/libQt5Widgets.so.5
#25 0x00007f59af568864 in QWidgetPrivate::show_helper() () at /usr/lib/libQt5Widgets.so.5
#26 0x00007f59af56bb59 in QWidget::setVisible(bool) () at /usr/lib/libQt5Widgets.so.5
#27 0x00007f59af5687c1 in QWidgetPrivate::showChildren(bool) () at /usr/lib/libQt5Widgets.so.5
#28 0x00007f59af568882 in QWidgetPrivate::show_helper() () at /usr/lib/libQt5Widgets.so.5
#29 0x00007f59af56bb59 in QWidget::setVisible(bool) () at /usr/lib/libQt5Widgets.so.5
#30 0x00007f59af5687c1 in QWidgetPrivate::showChildren(bool) () at /usr/lib/libQt5Widgets.so.5
#31 0x00007f59af568882 in QWidgetPrivate::show_helper() () at /usr/lib/libQt5Widgets.so.5
#32 0x00007f59af568770 in QWidgetPrivate::showChildren(bool) () at /usr/lib/libQt5Widgets.so.5
#33 0x00007f59af568882 in QWidgetPrivate::show_helper() () at /usr/lib/libQt5Widgets.so.5
#34 0x00007f59af56bb59 in QWidget::setVisible(bool) () at /usr/lib/libQt5Widgets.so.5
#35 0x00007f59b34d6b7e in kt::TabBarWidget::unshrink() () at /usr/lib/libktcore.so.16
#36 0x00007f59ae7e219f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#37 0x00007f59b34e11a0 in  () at /usr/lib/libktcore.so.16
#38 0x00007f59ae7e219f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#39 0x00007f59af525493 in QAction::toggled(bool) () at /usr/lib/libQt5Widgets.so.5
#40 0x00007f59af527b7f in QAction::setChecked(bool) () at /usr/lib/libQt5Widgets.so.5
#41 0x00007f598213fbfa in  () at /usr/lib/qt/plugins/ktorrent/ktorrent_infowidget.so
#42 0x00007f59b34d840e in kt::PluginManager::unloadAll() () at /usr/lib/libktcore.so.16
#43 0x000056371278fc68 in  ()
#44 0x00007f59ae7e219f in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/libQt5Core.so.5
#45 0x00007f59ae7b06b8 in QCoreApplication::aboutToQuit(QCoreApplication::QPrivateSignal) () at /usr/lib/libQt5Core.so.5
#46 0x00007f59ae7b4a7c in QCoreApplicationPrivate::execCleanup() () at /usr/lib/libQt5Core.so.5
#47 0x00007f59ae7b91a2 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#48 0x000056371278cb6d in  ()
#49 0x00007f59ad894f4a in __libc_start_main () at /usr/lib/libc.so.6
#50 0x000056371278d59a in _start ()

Reported using DrKonqi