Application: gwenview (21.08.3)

Qt Version: 5.15.3
Frameworks Version: 5.87.0
Operating System: Linux 5.11.0-40-generic x86_64
Windowing System: Wayland
Distribution: KDE neon User - Plasma 25th Anniversary Edition
DrKonqi: 5.23.3 [KCrashBackend]

-- Information about the crash:
- What I was doing when the application crashed:
I opened a screenshot in gwenview, then moved it to another folder by dragging it from the gwenview window to the other folder. 
Moving works. For half a second, the next image in that folder is displayed, as expected. Then gwenview crashes. 
I tested this four more times and it happens every time. 
I am on wayland if that's relevant.

The crash can be reproduced every time.

-- Backtrace:
Application: Gwenview (gwenview), signal: Segmentation fault

[New LWP 139313]
[New LWP 139314]
[New LWP 139315]
[New LWP 139316]
[New LWP 139317]
[New LWP 139318]
[New LWP 139319]
[New LWP 139326]
[New LWP 139327]
[New LWP 139328]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f1b38b65aff in __GI___poll (fds=0x7ffcaf79bc78, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
__preamble__
[Current thread is 1 (Thread 0x7f1b32dd0c40 (LWP 139312))]

Thread 11 (Thread 0x7f1b0e048700 (LWP 139328)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1b0e0478d0, clockid=<optimized out>, expected=0, futex_word=0x55f4dba1e344) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1b0e0478d0, clockid=<optimized out>, mutex=0x55f4dba1e2f0, cond=0x55f4dba1e318) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x55f4dba1e318, mutex=0x55f4dba1e2f0, abstime=0x7f1b0e0478d0) at pthread_cond_wait.c:656
#3  0x00007f1b38ef8558 in QWaitConditionPrivate::wait_relative (this=0x55f4dba1e2f0, deadline=...) at thread/qwaitcondition_unix.cpp:136
#4  QWaitConditionPrivate::wait (deadline=..., this=0x55f4dba1e2f0) at thread/qwaitcondition_unix.cpp:144
#5  QWaitCondition::wait (this=this@entry=0x55f4db616dc0, mutex=mutex@entry=0x55f4dabf8e18, deadline=...) at thread/qwaitcondition_unix.cpp:225
#6  0x00007f1b38ef5a61 in QThreadPoolThread::run (this=0x55f4db616db0) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:275
#7  0x00007f1b38ef245c in QThreadPrivate::start (arg=0x55f4db616db0) at thread/qthread_unix.cpp:329
#8  0x00007f1b36e82609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007f1b38b72293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f1b0f1fe700 (LWP 139327)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1b0f1fd8d0, clockid=<optimized out>, expected=0, futex_word=0x55f4dba1f4c0) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1b0f1fd8d0, clockid=<optimized out>, mutex=0x55f4dba1f470, cond=0x55f4dba1f498) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x55f4dba1f498, mutex=0x55f4dba1f470, abstime=0x7f1b0f1fd8d0) at pthread_cond_wait.c:656
#3  0x00007f1b38ef8558 in QWaitConditionPrivate::wait_relative (this=0x55f4dba1f470, deadline=...) at thread/qwaitcondition_unix.cpp:136
#4  QWaitConditionPrivate::wait (deadline=..., this=0x55f4dba1f470) at thread/qwaitcondition_unix.cpp:144
#5  QWaitCondition::wait (this=this@entry=0x55f4dba1b300, mutex=mutex@entry=0x55f4dabf8e18, deadline=...) at thread/qwaitcondition_unix.cpp:225
#6  0x00007f1b38ef5a61 in QThreadPoolThread::run (this=0x55f4dba1b2f0) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:275
#7  0x00007f1b38ef245c in QThreadPrivate::start (arg=0x55f4dba1b2f0) at thread/qthread_unix.cpp:329
#8  0x00007f1b36e82609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007f1b38b72293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f1b0f9ff700 (LWP 139326)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1b0f9fe8d0, clockid=<optimized out>, expected=0, futex_word=0x55f4dba1f310) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1b0f9fe8d0, clockid=<optimized out>, mutex=0x55f4dba1f2c0, cond=0x55f4dba1f2e8) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x55f4dba1f2e8, mutex=0x55f4dba1f2c0, abstime=0x7f1b0f9fe8d0) at pthread_cond_wait.c:656
#3  0x00007f1b38ef8558 in QWaitConditionPrivate::wait_relative (this=0x55f4dba1f2c0, deadline=...) at thread/qwaitcondition_unix.cpp:136
#4  QWaitConditionPrivate::wait (deadline=..., this=0x55f4dba1f2c0) at thread/qwaitcondition_unix.cpp:144
#5  QWaitCondition::wait (this=this@entry=0x55f4db755f20, mutex=mutex@entry=0x55f4dabf8e18, deadline=...) at thread/qwaitcondition_unix.cpp:225
#6  0x00007f1b38ef5a61 in QThreadPoolThread::run (this=0x55f4db755f10) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:275
#7  0x00007f1b38ef245c in QThreadPrivate::start (arg=0x55f4db755f10) at thread/qthread_unix.cpp:329
#8  0x00007f1b36e82609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007f1b38b72293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f1b16849700 (LWP 139319)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f4daefb068) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f4daefb018, cond=0x55f4daefb040) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f4daefb040, mutex=0x55f4daefb018) at pthread_cond_wait.c:638
#3  0x00007f1b295d0e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f1b295d0a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f1b36e82609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f1b38b72293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f1b0e849700 (LWP 139318)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f4daefb068) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f4daefb018, cond=0x55f4daefb040) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f4daefb040, mutex=0x55f4daefb018) at pthread_cond_wait.c:638
#3  0x00007f1b295d0e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f1b295d0a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f1b36e82609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f1b38b72293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f1b28a21700 (LWP 139317)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f4daefb068) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f4daefb018, cond=0x55f4daefb040) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f4daefb040, mutex=0x55f4daefb018) at pthread_cond_wait.c:638
#3  0x00007f1b295d0e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f1b295d0a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f1b36e82609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f1b38b72293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f1b29222700 (LWP 139316)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f4daefb068) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f4daefb018, cond=0x55f4daefb040) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f4daefb040, mutex=0x55f4daefb018) at pthread_cond_wait.c:638
#3  0x00007f1b295d0e7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#4  0x00007f1b295d0a7b in ?? () from /usr/lib/x86_64-linux-gnu/dri/iris_dri.so
#5  0x00007f1b36e82609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f1b38b72293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f1b2b7fe700 (LWP 139315)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f1b2b7fd8d0, clockid=<optimized out>, expected=0, futex_word=0x55f4daf10314) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f1b2b7fd8d0, clockid=<optimized out>, mutex=0x55f4daf102c0, cond=0x55f4daf102e8) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x55f4daf102e8, mutex=0x55f4daf102c0, abstime=0x7f1b2b7fd8d0) at pthread_cond_wait.c:656
#3  0x00007f1b38ef8558 in QWaitConditionPrivate::wait_relative (this=0x55f4daf102c0, deadline=...) at thread/qwaitcondition_unix.cpp:136
#4  QWaitConditionPrivate::wait (deadline=..., this=0x55f4daf102c0) at thread/qwaitcondition_unix.cpp:144
#5  QWaitCondition::wait (this=this@entry=0x55f4daf101b0, mutex=mutex@entry=0x55f4dabf8e18, deadline=...) at thread/qwaitcondition_unix.cpp:225
#6  0x00007f1b38ef5a61 in QThreadPoolThread::run (this=0x55f4daf101a0) at ../../include/QtCore/../../src/corelib/thread/qmutex.h:275
#7  0x00007f1b38ef245c in QThreadPrivate::start (arg=0x55f4daf101a0) at thread/qthread_unix.cpp:329
#8  0x00007f1b36e82609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007f1b38b72293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f1b2bfff700 (LWP 139314)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55f4dabf2f50) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55f4dabf2f00, cond=0x55f4dabf2f28) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55f4dabf2f28, mutex=0x55f4dabf2f00) at pthread_cond_wait.c:638
#3  0x00007f1b38ef85cb in QWaitConditionPrivate::wait (deadline=..., this=0x55f4dabf2f00) at thread/qwaitcondition_unix.cpp:146
#4  QWaitCondition::wait (this=<optimized out>, mutex=0x55f4dabdc9f8, deadline=...) at thread/qwaitcondition_unix.cpp:225
#5  0x00007f1b3ae86069 in ?? () from /lib/x86_64-linux-gnu/libgwenviewlib.so.5
#6  0x00007f1b38ef245c in QThreadPrivate::start (arg=0x55f4dabdc990) at thread/qthread_unix.cpp:329
#7  0x00007f1b36e82609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007f1b38b72293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f1b31ea5700 (LWP 139313)):
#0  0x00007f1b3656e93d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f1b3656f29b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1b3656f4a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1b3913361b in QEventDispatcherGlib::processEvents (this=0x7f1b2c000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f1b390d78ab in QEventLoop::exec (this=this@entry=0x7f1b31ea4930, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007f1b38ef12c2 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007f1b39394f4b in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f1b38ef245c in QThreadPrivate::start (arg=0x7f1b39418d80) at thread/qthread_unix.cpp:329
#8  0x00007f1b36e82609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007f1b38b72293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f1b32dd0c40 (LWP 139312)):
[KCrash Handler]
#4  0x00007f1b3ae3a83b in Gwenview::DocumentView::dragThumbnailLoaded(KFileItem const&, QPixmap const&) () from /lib/x86_64-linux-gnu/libgwenviewlib.so.5
#5  0x00007f1b3910fdce in QtPrivate::QSlotObjectBase::call (a=0x7ffcaf79cb30, r=0x55f4db32a1d0, this=0x55f4dba0d8d0) at ../../include/QtCore/../../src/corelib/kernel/qobjectdefs_impl.h:398
#6  doActivate<false> (sender=0x55f4dad3e9a0, signal_index=25, argv=0x7ffcaf79cb30) at kernel/qobject.cpp:3886
#7  0x00007f1b3ae00a52 in Gwenview::ThumbnailProvider::thumbnailLoaded(KFileItem const&, QPixmap const&, QSize const&, unsigned long long) () from /lib/x86_64-linux-gnu/libgwenviewlib.so.5
#8  0x00007f1b3ae88c7f in Gwenview::ThumbnailProvider::emitThumbnailLoaded(QImage const&, QSize const&) () from /lib/x86_64-linux-gnu/libgwenviewlib.so.5
#9  0x00007f1b3ae88d03 in Gwenview::ThumbnailProvider::thumbnailReady(QImage const&, QSize const&) () from /lib/x86_64-linux-gnu/libgwenviewlib.so.5
#10 0x00007f1b39106949 in QObject::event (this=0x55f4dad3e9a0, e=0x7f1af8006a90) at kernel/qobject.cpp:1314
#11 0x00007f1b39e9adc3 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#12 0x00007f1b39ea3bb8 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#13 0x00007f1b390d8daa in QCoreApplication::notifyInternal2 (receiver=0x55f4dad3e9a0, event=0x7f1af8006a90) at ../../include/QtCore/5.15.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:325
#14 0x00007f1b390db6b1 in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x55f4daad80d0) at kernel/qcoreapplication.cpp:1821
#15 0x00007f1b39133fa7 in postEventSourceDispatch (s=0x55f4dab32e50) at kernel/qeventdispatcher_glib.cpp:277
#16 0x00007f1b3656f17d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#17 0x00007f1b3656f400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#18 0x00007f1b3656f4a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#19 0x00007f1b39133602 in QEventDispatcherGlib::processEvents (this=0x55f4daac8800, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#20 0x00007f1b390d78ab in QEventLoop::exec (this=this@entry=0x7ffcaf79d190, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#21 0x00007f1b390dfa64 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#22 0x000055f4d94c656d in ?? ()
#23 0x00007f1b38a770b3 in __libc_start_main (main=0x55f4d94c6060, argc=2, argv=0x7ffcaf79d408, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffcaf79d3f8) at ../csu/libc-start.c:308
#24 0x000055f4d94c6bfe in ?? ()
[Inferior 1 (process 139312) detached]

The reporter indicates this bug may be a duplicate of or related to bug 425120, bug 430063.

Possible duplicates by query: bug 445434, bug 444339, bug 444091, bug 443460, bug 442652.

Reported using DrKonqi