Application: dolphin (19.12.3)

Qt Version: 5.12.8
Frameworks Version: 5.68.0
Operating System: Linux 5.4.0-66-generic x86_64
Windowing system: X11
Distribution: Ubuntu 20.04.2 LTS

-- Information about the crash:
Right click a file -> share -> send to device -> see a small empty window -> crash

The crash can be reproduced every time.

-- Backtrace:
Application: Dolphin (dolphin), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f536d58d800 (LWP 76319))]

Thread 5 (Thread 0x7f5362124700 (LWP 76356)):
#0  __GI___libc_read (nbytes=16, buf=0x7f5362123b70, fd=17) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=17, buf=0x7f5362123b70, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f536fc5bb2f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f536fc12ebe in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f536fc13312 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f536fc134a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f5371d21583 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5371cc84db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f5371b00785 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f5370a5d1a9 in ?? () from /lib/x86_64-linux-gnu/libQt5Qml.so.5
#10 0x00007f5371b019d2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f5370554609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007f5373e14293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f53634aa700 (LWP 76323)):
#0  0x00007f5373e07aff in __GI___poll (fds=0x7f53580025e0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f536fc1336e in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f536fc134a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5371d21583 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5371cc84db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5371b00785 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5371b019d2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5370554609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007f5373e14293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f536bb00700 (LWP 76322)):
#0  0x00007f536fc1125d in g_source_ref () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f536fc11328 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f536fc1282b in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f536fc1329b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f536fc134a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f5371d21583 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5371cc84db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5371b00785 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f5371fa3efa in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f5371b019d2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f5370554609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#11 0x00007f5373e14293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f536c6d9700 (LWP 76321)):
#0  0x00007f5373e07aff in __GI___poll (fds=0x7f536c6d8ca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f537050fc1a in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f537051190a in xcb_wait_for_event () from /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f536cedd298 in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f5371b019d2 in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5370554609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f5373e14293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f536d58d800 (LWP 76319)):
[KCrash Handler]
#6  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#7  0x00007f5373d17859 in __GI_abort () at abort.c:79
#8  0x00007f5371ac8aad in QMessageLogger::fatal(char const*, ...) const () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f5370db0065 in QSGRenderLoop::handleContextCreationFailure(QQuickWindow*, bool) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007f5370db1157 in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007f5370db1a1d in ?? () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007f53721969ad in QWindow::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007f5370e33159 in QQuickWindow::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007f53727baa66 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007f53727c40f0 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f5371cc993a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f537218cde6 in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#18 0x00007f537218d014 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#19 0x00007f537216735b in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#20 0x00007f536cede32e in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#21 0x00007f536fc1317d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f536fc13400 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f536fc134a3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f5371d21565 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f5371cc84db in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f5371cd0246 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f5373f308b5 in kdemain () from /lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#28 0x00007f5373d190b3 in __libc_start_main (main=0x55f1de109060, argc=1, argv=0x7ffd92b0fa68, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffd92b0fa58) at ../csu/libc-start.c:308
#29 0x000055f1de10909e in _start ()
[Inferior 1 (process 76319) detached]

Possible duplicates by query: bug 434860, bug 434456, bug 434435, bug 433897, bug 433551.

Reported using DrKonqi