Application: dolphin (20.12.1)

Qt Version: 5.15.2
Frameworks Version: 5.78.0
Operating System: Linux 5.4.0-65-generic x86_64
Windowing system: X11
Distribution: KDE neon User Edition 5.20

-- Information about the crash:
Browsing ext4 directory (under \home) with more than 3000 files. Happens regurarly when expanding directories with lots of files.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Dolphin (dolphin), signal: Aborted

[New LWP 904623]
[New LWP 904625]
[New LWP 904626]
[New LWP 904627]
[New LWP 904628]
[New LWP 904633]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f2502afeaff in __GI___poll (fds=0x7fff55daf9a8, nfds=1, timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
[Current thread is 1 (Thread 0x7f24fbba08c0 (LWP 904614))]

Thread 7 (Thread 0x7f24de7fc700 (LWP 904633)):
#0  __GI___libc_read (nbytes=16, buf=0x7f24de7fbad0, fd=22) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=22, buf=0x7f24de7fbad0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f24fe5ee89f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f24fe5a5cde in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f24fe5a6132 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f24fe5a62c3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f2500836fbb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f25007db1ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f25005f5a12 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f25005f6bac in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f24fef73609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#11 0x00007f2502b0b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f24f13f1700 (LWP 904628)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5612ff712448) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5612ff7123f8, cond=0x5612ff712420) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5612ff712420, mutex=0x5612ff7123f8) at pthread_cond_wait.c:638
#3  0x00007f24f32fbe6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f24f32fba6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f24fef73609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f2502b0b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f24f1bf2700 (LWP 904627)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5612ff712448) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5612ff7123f8, cond=0x5612ff712420) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5612ff712420, mutex=0x5612ff7123f8) at pthread_cond_wait.c:638
#3  0x00007f24f32fbe6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f24f32fba6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f24fef73609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f2502b0b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f24f23f3700 (LWP 904626)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5612ff712448) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5612ff7123f8, cond=0x5612ff712420) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5612ff712420, mutex=0x5612ff7123f8) at pthread_cond_wait.c:638
#3  0x00007f24f32fbe6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f24f32fba6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f24fef73609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f2502b0b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f24f2bf4700 (LWP 904625)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5612ff712448) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x5612ff7123f8, cond=0x5612ff712420) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x5612ff712420, mutex=0x5612ff7123f8) at pthread_cond_wait.c:638
#3  0x00007f24f32fbe6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f24f32fba6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f24fef73609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#6  0x00007f2502b0b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f24fa1e9700 (LWP 904623)):
#0  __GI___libc_read (nbytes=16, buf=0x7f24fa1e8aa0, fd=7) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=7, buf=0x7f24fa1e8aa0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f24fe5ee89f in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f24fe5a5cde in g_main_context_check () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f24fe5a6132 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f24fe5a62c3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f2500836fbb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f25007db1ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f25005f5a12 in QThread::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f250188cf4b in ?? () from /lib/x86_64-linux-gnu/libQt5DBus.so.5
#10 0x00007f25005f6bac in ?? () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f24fef73609 in start_thread (arg=<optimized out>) at pthread_create.c:477
#12 0x00007f2502b0b293 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f24fbba08c0 (LWP 904614)):
[KCrash Handler]
#4  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#5  0x00007f2502a0e859 in __GI_abort () at abort.c:79
#6  0x00007f2502a793ee in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7f2502ba3285 "%s\n") at ../sysdeps/posix/libc_fatal.c:155
#7  0x00007f2502a8147c in malloc_printerr (str=str@entry=0x7f2502ba5628 "double free or corruption (fasttop)") at malloc.c:5347
#8  0x00007f2502a82de5 in _int_free (av=0x7f2502bd4b80 <main_arena>, p=0x56130030e0f0, have_lock=0) at malloc.c:4266
#9  0x00007f250291c14c in KFileItemModel::removeItems(KItemRangeList const&, KFileItemModel::RemoveItemsBehavior) () from /lib/x86_64-linux-gnu/libdolphinprivate.so.5
#10 0x00007f2502928d54 in KFileItemModel::setExpanded(int, bool) () from /lib/x86_64-linux-gnu/libdolphinprivate.so.5
#11 0x00007f250293dd61 in KItemListController::onRelease(QPointF const&, QFlags<Qt::KeyboardModifier>, QFlags<Qt::MouseButton>, bool) () from /lib/x86_64-linux-gnu/libdolphinprivate.so.5
#12 0x00007f250293df09 in KItemListController::mouseReleaseEvent(QGraphicsSceneMouseEvent*, QTransform const&) () from /lib/x86_64-linux-gnu/libdolphinprivate.so.5
#13 0x00007f250293fb69 in KItemListController::processEvent(QEvent*, QTransform const&) () from /lib/x86_64-linux-gnu/libdolphinprivate.so.5
#14 0x00007f250294f0b6 in KItemListView::event(QEvent*) () from /lib/x86_64-linux-gnu/libdolphinprivate.so.5
#15 0x00007f25012b3dc3 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007f25012bcbb8 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#17 0x00007f25007dc69a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f25015e8f73 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f25015e93b7 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007f25015ee500 in QGraphicsScene::mouseReleaseEvent(QGraphicsSceneMouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f25015fb6e9 in QGraphicsScene::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f25012b3dc3 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007f25012bcbb8 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f25007dc69a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f2501618c5a in QGraphicsView::mouseReleaseEvent(QMouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x00007f25012f6c06 in QWidget::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007f25013a6f82 in QFrame::event(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f2501619aa1 in QGraphicsView::viewportEvent(QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007f25007dc403 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f25012b3db2 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007f25012bce77 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#32 0x00007f25007dc69a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f25012bc0a7 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007f2501311e54 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#35 0x00007f2501315174 in ?? () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007f25012b3dc3 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#37 0x00007f25012bcbb8 in QApplication::notify(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Widgets.so.5
#38 0x00007f25007dc69a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x00007f2500bbe4e8 in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#40 0x00007f2500bbfb55 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#41 0x00007f2500b977ac in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Gui.so.5
#42 0x00007f24fb514d7e in ?? () from /lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#43 0x00007f24fe5a5f9d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#44 0x00007f24fe5a6220 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#45 0x00007f24fe5a62c3 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#46 0x00007f2500836fa2 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#47 0x00007f25007db1ab in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#48 0x00007f25007e3354 in QCoreApplication::exec() () from /lib/x86_64-linux-gnu/libQt5Core.so.5
#49 0x00007f2502c2ef82 in kdemain () from /lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#50 0x00007f2502a100b3 in __libc_start_main (main=0x5612fd8d5060, argc=1, argv=0x7fff55db20c8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff55db20b8) at ../csu/libc-start.c:308
#51 0x00005612fd8d509e in _start ()
[Inferior 1 (process 904614) detached]

Possible duplicates by query: bug 432575, bug 432483, bug 431804, bug 431519, bug 431303.

Reported using DrKonqi