Application: dolphin (17.12.3)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 4.15.0-36-lowlatency x86_64
Distribution: Ubuntu 18.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed:
Copying large (1.5G) file to SD medium

Perhaps backtrace will help find out what really happened.

Using kubuntu bionic packages.

The crash can be reproduced sometimes.

-- Backtrace:
Application: Dolphin (dolphin), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f788f1416c0 (LWP 27122))]

Thread 5 (Thread 0x7f7860b48700 (LWP 27127)):
#0  0x00007f7881931e88 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f78819323e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f788193254c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7888bea90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f7888b8f9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f78889ae22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f78889b316d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7883aa36db in start_thread (arg=0x7f7860b48700) at pthread_create.c:463
#8  0x00007f788e9e388f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f786d8f4700 (LWP 27126)):
#0  0x00007f7883aa99f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x5563558c3368) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f7883aa99f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x5563558c3318, cond=0x5563558c3340) at pthread_cond_wait.c:502
#2  0x00007f7883aa99f3 in __pthread_cond_wait (cond=0x5563558c3340, mutex=0x5563558c3318) at pthread_cond_wait.c:655
#3  0x00007f786ea7c33b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f786ea7c067 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f7883aa36db in start_thread (arg=0x7f786d8f4700) at pthread_create.c:463
#6  0x00007f788e9e388f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f78758e1700 (LWP 27125)):
#0  0x00007f788e9d20b4 in __GI___libc_read (fd=7, buf=0x7f78758e0b60, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f7881976a00 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7881931f27 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f78819323e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f788193254c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f7888bea90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f7888b8f9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f78889ae22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f7889067d45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f78889b316d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f7883aa36db in start_thread (arg=0x7f78758e1700) at pthread_create.c:463
#11 0x00007f788e9e388f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f787801e700 (LWP 27124)):
#0  0x00007f788e9d6bf9 in __GI___poll (fds=0x7f787801dca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f7881273747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f788127536a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f787adcb2a9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f78889b316d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f7883aa36db in start_thread (arg=0x7f787801e700) at pthread_create.c:463
#6  0x00007f788e9e388f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f788f1416c0 (LWP 27122)):
[KCrash Handler]
#6  0x00007f7888b91656 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f7889b99805 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#8  0x00007f7889ba10f4 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007f7888b919a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f7888bc7388 in QObjectPrivate::setParent_helper(QObject*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f788a542306 in KCompositeJob::removeSubjob(KJob*) () at /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#12 0x00007f788ceed6cd in  () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#13 0x00007f788ceef8db in KIO::CopyJob::slotResult(KJob*) () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#14 0x00007f7888bc06cf in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#15 0x00007f788a542fdc in KJob::result(KJob*, KJob::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#16 0x00007f788a543b11 in KJob::finishJob(bool) () at /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#17 0x00007f788cf303a0 in KIO::FileCopyJob::slotResult(KJob*) () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#18 0x00007f7888bc06cf in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f788a542fdc in KJob::result(KJob*, KJob::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#20 0x00007f788a543b11 in KJob::finishJob(bool) () at /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#21 0x00007f788cf3f628 in KIO::SimpleJob::slotFinished() () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#22 0x00007f7888bc06cf in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f788cf191c4 in KIO::SlaveInterface::dispatch(int, QByteArray const&) () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#24 0x00007f788cf15807 in KIO::SlaveInterface::dispatch() () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#25 0x00007f788cf1ad01 in KIO::Slave::gotInput() () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#26 0x00007f7888bc05b5 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f788cebe8c9 in  () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#28 0x00007f7888bc1122 in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f7889b9982c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007f7889ba10f4 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007f7888b919a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f7888b9411d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f7888beb2c3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007f7881932287 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f78819324c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f788193254c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007f7888bea8ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007f7888b8f9ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x00007f7888b98a84 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x00007f788ecf6baa in kdemain () at /usr/lib/x86_64-linux-gnu/libkdeinit5_dolphin.so
#41 0x00007f788e8e3b97 in __libc_start_main (main=0x556354a8c730, argc=1, argv=0x7ffe95c00038, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe95c00028) at ../csu/libc-start.c:310
#42 0x0000556354a8c76a in _start ()

Possible duplicates by query: bug 398594, bug 398518, bug 398382, bug 396894, bug 396449.

Reported using DrKonqi