Bug 427149

Application: dolphin (20.11.70)

Qt Version: 5.15.0
Frameworks Version: 5.75.0
Operating System: Linux 5.4.0-47-generic x86_64
Windowing system: X11
Distribution: KDE neon Unstable Edition

-- Information about the crash:
- What I was doing when the application crashed:
i tried to delete a .deb file located in my Home and Dolphin crashed.
I tried to delete the same file again and Dolphin crashed again. Then I tried to delete a .png file and Dolphin did not crash.
Then I tried to delete the same .deb file again and Dolphin did not crash this time.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
Content of s_kcrashErrorMessage: (null)
[New LWP 27367]
[New LWP 27368]
[New LWP 27369]
[New LWP 27370]
[New LWP 27371]
[New LWP 27372]
[New LWP 27378]
[New LWP 28428]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f7a1ca63aff in __GI___poll (fds=fds@entry=0x7ffc78df39e8, nfds=nfds@entry=1, timeout=timeout@entry=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
[Current thread is 1 (Thread 0x7f7a15f11800 (LWP 27366))]

Thread 9 (Thread 0x7f79dbc5a700 (LWP 28428)):
#0  0x00007f7a181d1518 in pa_fdsem_before_poll () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-13.99.so
#1  0x00007f7a181e92d7 in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-13.99.so
#2  0x00007f7a18eceba3 in pa_mainloop_dispatch () from /lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f7a18eceed2 in pa_mainloop_iterate () from /lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f7a18ecef70 in pa_mainloop_run () from /lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f7a18edd11d in ?? () from /lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f7a181f867c in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-13.99.so
#7  0x00007f7a18f21609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007f7a1ca70293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f79f4b15700 (LWP 27378)):
#0  0x00007f7a1ca63aff in __GI___poll (fds=0x7f79e4005240, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f7a185621ae in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7a185622e3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7a1a7d2eab in QEventDispatcherGlib::processEvents (this=0x7f79e4000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f7a1a7771bb in QEventLoop::exec (this=this@entry=0x7f79f4b14da0, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007f7a1a595082 in QThread::exec (this=<optimized out>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007f7a1a59620c in QThreadPrivate::start (arg=0x55b271e4b780) at thread/qthread_unix.cpp:342
#7  0x00007f7a18f21609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#8  0x00007f7a1ca70293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f7a0c821700 (LWP 27372)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b27195dd28) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55b27195dcd8, cond=0x55b27195dd00) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55b27195dd00, mutex=0x55b27195dcd8) at pthread_cond_wait.c:638
#3  0x00007f7a0e54197b in cnd_wait (mtx=0x55b27195dcd8, cond=0x55b27195dd00) at ../include/c11/threads_posix.h:155
#4  util_queue_thread_func (input=input@entry=0x55b271b41350) at ../src/util/u_queue.c:275
#5  0x00007f7a0e54158b in impl_thrd_routine (p=<optimized out>) at ../include/c11/threads_posix.h:87
#6  0x00007f7a18f21609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007f7a1ca70293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f7a0d022700 (LWP 27371)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b27195dd28) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55b27195dcd8, cond=0x55b27195dd00) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55b27195dd00, mutex=0x55b27195dcd8) at pthread_cond_wait.c:638
#3  0x00007f7a0e54197b in cnd_wait (mtx=0x55b27195dcd8, cond=0x55b27195dd00) at ../include/c11/threads_posix.h:155
#4  util_queue_thread_func (input=input@entry=0x55b271b41310) at ../src/util/u_queue.c:275
#5  0x00007f7a0e54158b in impl_thrd_routine (p=<optimized out>) at ../include/c11/threads_posix.h:87
#6  0x00007f7a18f21609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007f7a1ca70293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f7a0d823700 (LWP 27370)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b27195dd28) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55b27195dcd8, cond=0x55b27195dd00) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55b27195dd00, mutex=0x55b27195dcd8) at pthread_cond_wait.c:638
#3  0x00007f7a0e54197b in cnd_wait (mtx=0x55b27195dcd8, cond=0x55b27195dd00) at ../include/c11/threads_posix.h:155
#4  util_queue_thread_func (input=input@entry=0x55b2719c28b0) at ../src/util/u_queue.c:275
#5  0x00007f7a0e54158b in impl_thrd_routine (p=<optimized out>) at ../include/c11/threads_posix.h:87
#6  0x00007f7a18f21609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007f7a1ca70293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f7a0e024700 (LWP 27369)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b27195dd28) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55b27195dcd8, cond=0x55b27195dd00) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55b27195dd00, mutex=0x55b27195dcd8) at pthread_cond_wait.c:638
#3  0x00007f7a0e54197b in cnd_wait (mtx=0x55b27195dcd8, cond=0x55b27195dd00) at ../include/c11/threads_posix.h:155
#4  util_queue_thread_func (input=input@entry=0x55b271a24380) at ../src/util/u_queue.c:275
#5  0x00007f7a0e54158b in impl_thrd_routine (p=<optimized out>) at ../include/c11/threads_posix.h:87
#6  0x00007f7a18f21609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#7  0x00007f7a1ca70293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f7a0ffff700 (LWP 27368)):
#0  0x00007f7a1ca63aff in __GI___poll (fds=0x7f7a080119c0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f7a185621ae in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7a185622e3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7a1a7d2eab in QEventDispatcherGlib::processEvents (this=0x7f7a08000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007f7a1a7771bb in QEventLoop::exec (this=this@entry=0x7f7a0fffed70, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#5  0x00007f7a1a595082 in QThread::exec (this=this@entry=0x7f7a1ab04d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#6  0x00007f7a1aa81f2b in QDBusConnectionManager::run (this=0x7f7a1ab04d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at qdbusconnection.cpp:179
#7  0x00007f7a1a59620c in QThreadPrivate::start (arg=0x7f7a1ab04d80 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread_unix.cpp:342
#8  0x00007f7a18f21609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#9  0x00007f7a1ca70293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f7a15515700 (LWP 27367)):
#0  0x00007f7a1ca63aff in __GI___poll (fds=0x7f7a15514ca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f7a18f57c1a in ?? () from /lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f7a18f5990a in xcb_wait_for_event () from /lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f7a15b01978 in QXcbEventQueue::run (this=0x55b2716bb570) at qxcbeventqueue.cpp:228
#4  0x00007f7a1a59620c in QThreadPrivate::start (arg=0x55b2716bb570) at thread/qthread_unix.cpp:342
#5  0x00007f7a18f21609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f7a1ca70293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f7a15f11800 (LWP 27366)):
[KCrash Handler]
#6  0x00007f7a1a7817ac in QMetaObject::cast (this=0x7f7a1b89e280 <QAction::staticMetaObject>, obj=obj@entry=0x55b271d0eb30) at kernel/qmetaobject.cpp:381
#7  0x00007f7a1a7817e9 in QMetaObject::cast (this=<optimized out>, obj=obj@entry=0x55b271d0eb30) at kernel/qmetaobject.cpp:370
#8  0x00007f7a1b3b40d6 in qobject_cast<QAction*> (object=0x55b271d0eb30) at ../../include/QtCore/../../src/corelib/kernel/qobject.h:519
#9  qWidgetShortcutContextMatcher (object=0x55b271d0eb30, context=Qt::WindowShortcut) at kernel/qshortcut.cpp:112
#10 0x00007f7a1acaef4f in QShortcutEntry::correctContext (this=0x55b27256aa78) at kernel/qshortcutmap.cpp:79
#11 QShortcutMap::find (this=this@entry=0x55b2716b08f8, e=e@entry=0x7ffc78df4450, ignoredModifiers=ignoredModifiers@entry=0) at kernel/qshortcutmap.cpp:457
#12 0x00007f7a1acb1d24 in QShortcutMap::nextState (this=this@entry=0x55b2716b08f8, e=e@entry=0x7ffc78df4450) at kernel/qshortcutmap.cpp:372
#13 0x00007f7a1acb2fc9 in QShortcutMap::tryShortcut (this=this@entry=0x55b2716b08f8, e=e@entry=0x7ffc78df4450) at kernel/qshortcutmap.cpp:328
#14 0x00007f7a1ac607a2 in QWindowSystemInterface::handleShortcutEvent (window=<optimized out>, window@entry=0x55b2719c2b60, timestamp=2872299, keyCode=16777223, modifiers=..., nativeScanCode=119, nativeVirtualKey=65535, nativeModifiers=0, text=..., autorepeat=false, count=1) at kernel/qwindowsysteminterface.cpp:478
#15 0x00007f7a1ac80311 in QGuiApplicationPrivate::processKeyEvent (e=e@entry=0x55b271cf3af0) at kernel/qguiapplication.cpp:2327
#16 0x00007f7a1ac8559b in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x55b271cf3af0) at kernel/qguiapplication.cpp:1952
#17 0x00007f7a1ac5d2cb in QWindowSystemInterface::sendWindowSystemEvents (flags=flags@entry=...) at kernel/qwindowsysteminterface.cpp:1175
#18 0x00007f7a15b0299e in xcbSourceDispatch (source=<optimized out>) at qxcbeventdispatcher.cpp:105
#19 0x00007f7a18561fbd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#20 0x00007f7a18562240 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007f7a185622e3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007f7a1a7d2e92 in QEventDispatcherGlib::processEvents (this=0x55b27176f720, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#23 0x00007f7a1a7771bb in QEventLoop::exec (this=this@entry=0x7ffc78df4800, flags=..., flags@entry=...) at ../../include/QtCore/../../src/corelib/global/qflags.h:141
#24 0x00007f7a1a77f354 in QCoreApplication::exec () at ../../include/QtCore/../../src/corelib/global/qflags.h:121
#25 0x00007f7a1ac77d10 in QGuiApplication::exec () at kernel/qguiapplication.cpp:1867
#26 0x00007f7a1b38dc39 in QApplication::exec () at kernel/qapplication.cpp:2811
#27 0x00007f7a1cb8f36f in kdemain (argc=<optimized out>, argv=<optimized out>) at ./src/main.cpp:193
#28 0x00007f7a1c9750b3 in __libc_start_main (main=0x55b270c41060 <main>, argc=2, argv=0x7ffc78df4ad8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc78df4ac8) at ../csu/libc-start.c:308
#29 0x000055b270c4109e in _start ()
[Inferior 1 (process 27366) detached]

Reported using DrKonqi