Bug 456806

Application: gwenview (19.12.3)

Qt Version: 5.12.8
Frameworks Version: 5.68.0
Operating System: Linux 5.4.0-122-generic x86_64
Windowing system: X11
Distribution: Ubuntu 20.04.4 LTS

-- Information about the crash:
Gwenview hanged after trying to open a png file from within dolphin . I was trying to close Gwenview when it crashed.

-- Backtrace:
Application: Gwenview (gwenview), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f798113a440 (LWP 26785))]

Thread 4 (Thread 0x7f796eef9700 (LWP 26789)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x561bd6b9c118) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x561bd6b9c0c8, cond=0x561bd6b9c0f0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x561bd6b9c0f0, mutex=0x561bd6b9c0c8) at pthread_cond_wait.c:647
#3  0x00007f796f1475eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f796f1471eb in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f79851a7609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f7986a98133 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f797f13f700 (LWP 26787)):
#0  __GI___libc_read (nbytes=16, buf=0x7f797f13e8a0, fd=7) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=7, buf=0x7f797f13e8a0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f79849d5b2f in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f798498cebe in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f798498d312 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f798498d4a3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f798702d453 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7986fd43ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7986e0c785 in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f7986832efa in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#10 0x00007f7986e0d9d2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f79851a7609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007f7986a98133 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f7980258700 (LWP 26786)):
#0  0x00007f7986a8b99f in __GI___poll (fds=0x7f79802579e8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f798491cc1a in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f798491e90a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f7980a29298 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f7986e0d9d2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f79851a7609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f7986a98133 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f798113a440 (LWP 26785)):
[KCrash Handler]
#6  0x00007f7986f2feb7 in QUrl::operator==(QUrl const&) const () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7988a1719e in Gwenview::ContextManager::setCurrentDirUrl (this=this@entry=0x561bd6a578f0, _url=...) at ./lib/contextmanager.cpp:186
#8  0x00007f7988a1729a in Gwenview::ContextManager::<lambda(const QUrl&)>::operator() (__closure=<optimized out>, urlReady=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qurl.h:69
#9  QtPrivate::FunctorCall<QtPrivate::IndexesList<0>, QtPrivate::List<const QUrl&>, void, Gwenview::ContextManager::ContextManager(Gwenview::SortedDirModel*, QObject*)::<lambda(const QUrl&)> >::call (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:146
#10 QtPrivate::Functor<Gwenview::ContextManager::ContextManager(Gwenview::SortedDirModel*, QObject*)::<lambda(const QUrl&)>, 1>::call<QtPrivate::List<QUrl const&>, void> (arg=<optimized out>, f=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:256
#11 QtPrivate::QFunctorSlotObject<Gwenview::ContextManager::ContextManager(Gwenview::SortedDirModel*, QObject*)::<lambda(const QUrl&)>, 1, QtPrivate::List<const QUrl&>, void>::impl (which=1, r=<optimized out>, ret=<optimized out>, a=<optimized out>, this_=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:439
#12 QtPrivate::QFunctorSlotObject<Gwenview::ContextManager::ContextManager(Gwenview::SortedDirModel*, QObject*)::<lambda(const QUrl&)>, 1, QtPrivate::List<const QUrl&>, void>::impl(int, QtPrivate::QSlotObjectBase *, QObject *, void **, bool *) (which=<optimized out>, this_=<optimized out>, r=<optimized out>, a=<optimized out>, ret=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qobjectdefs_impl.h:432
#13 0x00007f7987001328 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f7988a05f49 in Gwenview::DocumentFactory::readyForDirListerStart (this=<optimized out>, _t1=...) at ./obj-x86_64-linux-gnu/lib/gwenviewlib_autogen/DV7UALDUNI/moc_documentfactory.cpp:208
#15 0x00007f7987001328 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f7988a05c09 in Gwenview::Document::loaded (this=<optimized out>, _t1=...) at ./obj-x86_64-linux-gnu/lib/gwenviewlib_autogen/DV7UALDUNI/moc_document.cpp:314
#17 0x00007f7987001328 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f7988a2c3e4 in Gwenview::DocumentLoadedImpl::init (this=0x561bd6f2fbd0) at ./lib/document/documentloadedimpl.cpp:68
#19 0x00007f7988a2315f in Gwenview::Document::switchToImpl (this=0x561bd6e9e2e0, impl=impl@entry=0x561bd6f2fbd0) at ./lib/document/document.cpp:254
#20 0x00007f7988a220e0 in Gwenview::AbstractDocumentImpl::switchToImpl (this=this@entry=0x561bd6f5b5e0, impl=impl@entry=0x561bd6f2fbd0) at ./lib/document/abstractdocumentimpl.cpp:58
#21 0x00007f7988a2ccd9 in Gwenview::LoadingDocumentImpl::slotImageLoaded (this=0x561bd6f5b5e0) at ./lib/document/loadingdocumentimpl.cpp:555
#22 0x00007f7987001328 in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f7986e17f65 in QFutureWatcherBase::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f7987c16a66 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007f7987c200f0 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x00007f7986fd580a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f7986fd8488 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f798702de37 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f798498d17d in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007f798498d400 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#31 0x00007f798498d4a3 in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f798702d435 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f7986fd43ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007f7986fdc116 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x0000561bd4d19aaa in main (argc=<optimized out>, argv=<optimized out>) at ./app/main.cpp:168
[Inferior 1 (process 26785) detached]

The reporter indicates this bug may be a duplicate of or related to bug 443460.

Possible duplicates by query: bug 453871, bug 443460, bug 432945, bug 432501, bug 429212.

Reported using DrKonqi