Bug 419510

Summary: Digikam crashed on exit after importing collection
Product: [Applications] digikam Reporter: Martin Unzner <martin.u>
Component: Plugin-DImg-MagickAssignee: Digikam Developers <digikam-bugs-null>
Status: RESOLVED FIXED    
Severity: crash CC: caulier.gilles, metzpinguin
Priority: NOR Keywords: drkonqi
Version First Reported In: 6.4.0   
Target Milestone: ---   
Platform: Arch Linux   
OS: Linux   
Latest Commit: https://invent.kde.org/kde/digikam/-/commit/76ff65aec63be4036955e89bf7136a5e9411e6b1 Version Fixed/Implemented In: 7.0.0
Sentry Crash Report:

Description Martin Unzner 2020-04-01 18:48:00 UTC 
Application: digikam (6.4.0)

Qt Version: 5.14.1
Frameworks Version: 5.68.0
Operating System: Linux 5.5.13-arch1-1 x86_64
Windowing system: X11
Distribution: Arch Linux

-- Information about the crash:
- What I was doing when the application crashed:

I had just completed initial setup and imported my pictures folder.
When I temporarily closed digikam it crashed on exit with the attached core dump.

The crash does not seem to be reproducible.

-- Backtrace:
Application: digiKam (digikam), signal: Aborted
Using host libthread_db library "/usr/lib/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f919530bb80 (LWP 2240))]

Thread 27 (Thread 0x7f90e44b3700 (LWP 2995)):
#0  0x00007f91aadb801a in pthread_cond_timedwait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f91a2484116 in  () at /usr/lib/libQt5WebEngineCore.so.5
#2  0x0000000000000a5d in  ()
#3  0x000000001c3fabea in  ()
#4  0x0000000000000a3c in  ()
#5  0x000000001c3fafd2 in  ()
#6  0x0000000000000000 in  ()

Thread 26 (Thread 0x7f915e7fc700 (LWP 2994)):
#0  0x00007f91aadb801a in pthread_cond_timedwait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f91a2484116 in  () at /usr/lib/libQt5WebEngineCore.so.5
#2  0x0000000000000a5d in  ()
#3  0x000000001c3fda51 in  ()
#4  0x0000000000000a3c in  ()
#5  0x000000001c3fde39 in  ()
#6  0x0000000000000000 in  ()

Thread 25 (Thread 0x7f9107fff700 (LWP 2993)):
#0  0x00007f91aadb801a in pthread_cond_timedwait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f91a2484116 in  () at /usr/lib/libQt5WebEngineCore.so.5
#2  0x0000000000000a5d in  ()
#3  0x000000001c3ff7b3 in  ()
#4  0x0000000000000a3c in  ()
#5  0x000000001c3ffb9b in  ()
#6  0x0000000000000000 in  ()

Thread 24 (Thread 0x7f9138ff9700 (LWP 2992)):
#0  0x00007f91aadb801a in pthread_cond_timedwait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f91a2484116 in  () at /usr/lib/libQt5WebEngineCore.so.5
#2  0x0000000000000a5d in  ()
#3  0x000000001c421ed0 in  ()
#4  0x0000000000000a3c in  ()
#5  0x000000001c4222b8 in  ()
#6  0x0000000000000000 in  ()

Thread 23 (Thread 0x7f9104c45700 (LWP 2991)):
#0  0x00007f91aadb801a in pthread_cond_timedwait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f91ae77eaa8 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007f91ae77ebc9 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007f91ae77c23d in  () at /usr/lib/libQt5Core.so.5
#4  0x00007f91ae778e36 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f91aadb146f in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f91ae3e33d3 in clone () at /usr/lib/libc.so.6

Thread 22 (Thread 0x7f90e4cb4700 (LWP 2968)):
#0  0x00007f91aadb801a in pthread_cond_timedwait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f91a2484116 in  () at /usr/lib/libQt5WebEngineCore.so.5
#2  0x0000000000000a5d in  ()
#3  0x000000001ec16cbd in  ()
#4  0x0000000000000a3c in  ()
#5  0x000000001ec16cbd in  ()
#6  0x0000000000000000 in  ()

Thread 21 (Thread 0x7f9105446700 (LWP 2602)):
[KCrash Handler]
#6  0x00007f91ae31fce5 in raise () at /usr/lib/libc.so.6
#7  0x00007f91ae309857 in abort () at /usr/lib/libc.so.6
#8  0x00007f91ae309727 in _nl_load_domain.cold () at /usr/lib/libc.so.6
#9  0x00007f91ae318426 in  () at /usr/lib/libc.so.6
#10 0x00007f91aaf6c2c9 in  () at /usr/lib/libMagickCore-7.Q16HDRI.so.7
#11 0x00007f91aaedd793 in GetModuleInfo () at /usr/lib/libMagickCore-7.Q16HDRI.so.7
#12 0x00007f91aaed7618 in GetMagickInfo () at /usr/lib/libMagickCore-7.Q16HDRI.so.7
#13 0x00007f91aaed7a14 in GetMagickInfoList () at /usr/lib/libMagickCore-7.Q16HDRI.so.7
#14 0x00007f9184626455 in  () at /usr/lib/qt/plugins/digikam/dimg/DImg_ImageMagick_Plugin.so
#15 0x00007f9184626c4d in  () at /usr/lib/qt/plugins/digikam/dimg/DImg_ImageMagick_Plugin.so
#16 0x00007f91affcd59f in Digikam::DImg::load(QString const&, int, Digikam::DImgLoaderObserver*, Digikam::DRawDecoding const&) () at /usr/lib/libdigikamcore.so.6.4.0
#17 0x00007f91b00b77b3 in Digikam::ThumbnailCreator::loadImagePreview(Digikam::DMetadata const&) const () at /usr/lib/libdigikamcore.so.6.4.0
#18 0x00007f91b00b8be7 in Digikam::ThumbnailCreator::createThumbnail(Digikam::ThumbnailInfo const&, QRect const&) const () at /usr/lib/libdigikamcore.so.6.4.0
#19 0x00007f91b00b2f5e in Digikam::ThumbnailCreator::load(Digikam::ThumbnailIdentifier const&, QRect const&, bool) const () at /usr/lib/libdigikamcore.so.6.4.0
#20 0x00007f91b00b38d6 in Digikam::ThumbnailCreator::load(Digikam::ThumbnailIdentifier const&) const () at /usr/lib/libdigikamcore.so.6.4.0
#21 0x00007f91b00c3ec0 in Digikam::ThumbnailLoadingTask::execute() () at /usr/lib/libdigikamcore.so.6.4.0
#22 0x00007f91b00c5b68 in Digikam::LoadSaveThread::run() () at /usr/lib/libdigikamcore.so.6.4.0
#23 0x00007f91b00eabde in  () at /usr/lib/libdigikamcore.so.6.4.0
#24 0x00007f91ae77c062 in  () at /usr/lib/libQt5Core.so.5
#25 0x00007f91ae778e36 in  () at /usr/lib/libQt5Core.so.5
#26 0x00007f91aadb146f in start_thread () at /usr/lib/libpthread.so.0
#27 0x00007f91ae3e33d3 in clone () at /usr/lib/libc.so.6

Thread 20 (Thread 0x7f90effff700 (LWP 2601)):
#0  0x00007f91aadb7cf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f91a248401c in  () at /usr/lib/libQt5WebEngineCore.so.5
#2  0x0000000000000000 in  ()

Thread 19 (Thread 0x7f9106448700 (LWP 2584)):
#0  0x00007f91aadb7cf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f91a248401c in  () at /usr/lib/libQt5WebEngineCore.so.5
#2  0x0000000000000000 in  ()

Thread 18 (Thread 0x7f9106c49700 (LWP 2583)):
#0  0x00007f91ae36999a in __lll_lock_wait_private () at /usr/lib/libc.so.6
#1  0x00007f91ae3517b6 in buffered_vfprintf () at /usr/lib/libc.so.6
#2  0x00007f91ae34e774 in __vfprintf_internal () at /usr/lib/libc.so.6
#3  0x00007f91ae33b1fa in fprintf () at /usr/lib/libc.so.6
#4  0x00007f919786cdaa in event_logv_ () at /usr/lib/libevent-2.1.so.7
#5  0x00007f919786cf78 in event_warn () at /usr/lib/libevent-2.1.so.7
#6  0x00007f919786f30a in  () at /usr/lib/libevent-2.1.so.7
#7  0x00007f9197864319 in event_base_loop () at /usr/lib/libevent-2.1.so.7
#8  0x00007f91a248ae7a in  () at /usr/lib/libQt5WebEngineCore.so.5
#9  0x000100770000007c in  ()
#10 0x00007f9106c48890 in  ()
#11 0x00007f9106c48888 in  ()
#12 0x000000009cc4c233 in  ()
#13 0x0000000000000008 in  ()
#14 0x00000000004b5f78 in  ()
#15 0x0000000000000004 in  ()
#16 0x00000000000e5678 in  ()
#17 0x00007f9106c489f0 in  ()
#18 0x000055fb6565adc0 in  ()
#19 0x7fffffffffffffff in  ()
#20 0x0000000000000001 in  ()
#21 0x00007f9106c48968 in  ()
#22 0x00007f9106c489f0 in  ()
#23 0x00007f9106c48910 in  ()
#24 0x00007f91a243f46f in  () at /usr/lib/libQt5WebEngineCore.so.5
#25 0x00007f9106c48968 in  ()
#26 0x7fffffffffffffff in  ()
#27 0x00007f9106c48910 in  ()
#28 0x00007f9106c489f0 in  ()
#29 0x7fffffffffffffff in  ()
#30 0x00007f9106c48960 in  ()
#31 0x00007f9106c489d0 in  ()
#32 0x00007f91a241f139 in  () at /usr/lib/libQt5WebEngineCore.so.5
#33 0x000000770000007c in  ()
#34 0x0000005b0000006e in  ()
#35 0x00007f91500bee18 in  ()
#36 0x0000000000000000 in  ()

Thread 17 (Thread 0x7f91397fa700 (LWP 2580)):
#0  0x00007f91ae3d8abf in poll () at /usr/lib/libc.so.6
#1  0x00007f919a210ba7 in  () at /usr/lib/libopenal.so.1
#2  0x00007f919a15b059 in pa_mainloop_poll () at /usr/lib/libpulse.so.0
#3  0x00007f919a165301 in pa_mainloop_iterate () at /usr/lib/libpulse.so.0
#4  0x00007f919a1653b1 in pa_mainloop_run () at /usr/lib/libpulse.so.0
#5  0x00007f919a21149e in  () at /usr/lib/libopenal.so.1
#6  0x00007f91ae595b24 in std::execute_native_thread_routine(void*) (__p=0x55fb64f9a3d0) at /build/gcc/src/gcc/libstdc++-v3/src/c++11/thread.cc:80
#7  0x00007f91aadb146f in start_thread () at /usr/lib/libpthread.so.0
#8  0x00007f91ae3e33d3 in clone () at /usr/lib/libc.so.6

Thread 16 (Thread 0x7f9139ffb700 (LWP 2577)):
#0  0x00007f91aadb7cf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f91a248401c in  () at /usr/lib/libQt5WebEngineCore.so.5
#2  0x0000000000000000 in  ()

Thread 15 (Thread 0x7f913a7fc700 (LWP 2576)):
#0  0x00007f91aadb7cf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f91a248401c in  () at /usr/lib/libQt5WebEngineCore.so.5
#2  0x0000000000000000 in  ()

Thread 14 (Thread 0x7f913affd700 (LWP 2575)):
#0  0x00007f91ae36999a in __lll_lock_wait_private () at /usr/lib/libc.so.6
#1  0x00007f91ae3517b6 in buffered_vfprintf () at /usr/lib/libc.so.6
#2  0x00007f91ae34e774 in __vfprintf_internal () at /usr/lib/libc.so.6
#3  0x00007f91ae33b1fa in fprintf () at /usr/lib/libc.so.6
#4  0x00007f919786cdaa in event_logv_ () at /usr/lib/libevent-2.1.so.7
#5  0x00007f919786cf78 in event_warn () at /usr/lib/libevent-2.1.so.7
#6  0x00007f919786f30a in  () at /usr/lib/libevent-2.1.so.7
#7  0x00007f9197864319 in event_base_loop () at /usr/lib/libevent-2.1.so.7
#8  0x00007f91a248ad9d in  () at /usr/lib/libQt5WebEngineCore.so.5
#9  0x000100770000007c in  ()
#10 0x00007f913affc890 in  ()
#11 0x00007f913affc888 in  ()
#12 0x0000000000000000 in  ()

Thread 13 (Thread 0x7f913b7fe700 (LWP 2574)):
#0  0x00007f91aadb801a in pthread_cond_timedwait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f91a2484116 in  () at /usr/lib/libQt5WebEngineCore.so.5
#2  0x0000000000000a4b in  ()
#3  0x0000000015dcb8e0 in  ()
#4  0x0000000000000a3c in  ()
#5  0x000000001c46c040 in  ()
#6  0x0000000000000000 in  ()

Thread 12 (Thread 0x7f913bfff700 (LWP 2573)):
#0  0x00007f91aadb7cf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f91a248401c in  () at /usr/lib/libQt5WebEngineCore.so.5
#2  0x0000000000000000 in  ()

Thread 11 (Thread 0x7f915effd700 (LWP 2568)):
#0  0x00007f91aadb801a in pthread_cond_timedwait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f91a2484116 in  () at /usr/lib/libQt5WebEngineCore.so.5
#2  0x0000000000000a5d in  ()
#3  0x000000001ec8347a in  ()
#4  0x0000000000000a3c in  ()
#5  0x000000001ec83862 in  ()
#6  0x0000000000000000 in  ()

Thread 10 (Thread 0x7f915f7fe700 (LWP 2567)):
#0  0x00007f91ae36999a in __lll_lock_wait_private () at /usr/lib/libc.so.6
#1  0x00007f91ae3517b6 in buffered_vfprintf () at /usr/lib/libc.so.6
#2  0x00007f91ae34e774 in __vfprintf_internal () at /usr/lib/libc.so.6
#3  0x00007f91ae33b1fa in fprintf () at /usr/lib/libc.so.6
#4  0x00007f919786cdaa in event_logv_ () at /usr/lib/libevent-2.1.so.7
#5  0x00007f919786cf78 in event_warn () at /usr/lib/libevent-2.1.so.7
#6  0x00007f919786f30a in  () at /usr/lib/libevent-2.1.so.7
#7  0x00007f9197864319 in event_base_loop () at /usr/lib/libevent-2.1.so.7
#8  0x00007f91a248ad9d in  () at /usr/lib/libQt5WebEngineCore.so.5
#9  0x000100770000007c in  ()
#10 0x00007f915f7fd870 in  ()
#11 0x00007f915f7fd868 in  ()
#12 0x000000009cc4c244 in  ()
#13 0x0000000000000008 in  ()
#14 0x0000000005a652e0 in  ()
#15 0x000000000000005e in  ()
#16 0x00000000000bff60 in  ()
#17 0x00007f915f7fd9f0 in  ()
#18 0x000055fb644336e0 in  ()
#19 0x7fffffffffffffff in  ()
#20 0x0000000000000001 in  ()
#21 0x00007f915f7fd948 in  ()
#22 0x00007f915f7fd9f0 in  ()
#23 0x00007f915f7fd8f0 in  ()
#24 0x00007f91a243f46f in  () at /usr/lib/libQt5WebEngineCore.so.5
#25 0x00007f915f7fd948 in  ()
#26 0x7fffffffffffffff in  ()
#27 0x00007f915f7fd8f0 in  ()
#28 0x00007f915f7fd9f0 in  ()
#29 0x7fffffffffffffff in  ()
#30 0x00007f915f7fd940 in  ()
#31 0x00007f915f7fd9b0 in  ()
#32 0x00007f91a241f139 in  () at /usr/lib/libQt5WebEngineCore.so.5
#33 0x0000003000000002 in  ()
#34 0x0000000000000000 in  ()

Thread 9 (Thread 0x7f917c8af700 (LWP 2565)):
#0  0x00007f91ae3d459f in write () at /usr/lib/libc.so.6
#1  0x00007f91ae36524d in _IO_file_write@@GLIBC_2.2.5 () at /usr/lib/libc.so.6
#2  0x00007f91ae3645a6 in new_do_write () at /usr/lib/libc.so.6
#3  0x00007f91ae36597e in __GI__IO_file_xsputn () at /usr/lib/libc.so.6
#4  0x00007f91ae351699 in buffered_vfprintf () at /usr/lib/libc.so.6
#5  0x00007f91ae34e774 in __vfprintf_internal () at /usr/lib/libc.so.6
#6  0x00007f91ae33b1fa in fprintf () at /usr/lib/libc.so.6
#7  0x00007f919786cdaa in event_logv_ () at /usr/lib/libevent-2.1.so.7
#8  0x00007f919786cf78 in event_warn () at /usr/lib/libevent-2.1.so.7
#9  0x00007f919786f30a in  () at /usr/lib/libevent-2.1.so.7
#10 0x00007f9197864319 in event_base_loop () at /usr/lib/libevent-2.1.so.7
#11 0x00007f91a248ae7a in  () at /usr/lib/libQt5WebEngineCore.so.5
#12 0x00017f917c8ae948 in  ()
#13 0x00007f917c8ae870 in  ()
#14 0x00007f917c8ae868 in  ()
#15 0x000000009cc4c226 in  ()
#16 0x00007f917c8ae948 in  ()
#17 0x00000000c6bf11f8 in  ()
#18 0x0000000000000d06 in  ()
#19 0x0000000000064478 in  ()
#20 0x0000000000000000 in  ()

Thread 8 (Thread 0x7f917ffff700 (LWP 2558)):
#0  0x00007f91aadb7cf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f91ae77eb24 in QWaitCondition::wait(QMutex*, QDeadlineTimer) () at /usr/lib/libQt5Core.so.5
#2  0x00007f91ae77ec02 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/libQt5Core.so.5
#3  0x00007f91b00e98ce in  () at /usr/lib/libdigikamcore.so.6.4.0
#4  0x00007f91ae778e36 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f91aadb146f in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f91ae3e33d3 in clone () at /usr/lib/libc.so.6

Thread 7 (Thread 0x7f91869b1700 (LWP 2246)):
#0  0x00007f91ae3d8abf in poll () at /usr/lib/libc.so.6
#1  0x00007f91a70517a0 in  () at /usr/lib/libglib-2.0.so.0
#2  0x00007f91a7051871 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#3  0x00007f91ae9ace7c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#4  0x00007f91ae95362c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#5  0x00007f91ae777cc2 in QThread::exec() () at /usr/lib/libQt5Core.so.5
#6  0x00007f91ab33db28 in  () at /usr/lib/libQt5DBus.so.5
#7  0x00007f91ae778e36 in  () at /usr/lib/libQt5Core.so.5
#8  0x00007f91aadb146f in start_thread () at /usr/lib/libpthread.so.0
#9  0x00007f91ae3e33d3 in clone () at /usr/lib/libc.so.6

Thread 6 (Thread 0x7f91871b2700 (LWP 2245)):
#0  0x00007f91aadb7cf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f9192334b8c in  () at /usr/lib/dri/iris_dri.so
#2  0x00007f9192334788 in  () at /usr/lib/dri/iris_dri.so
#3  0x00007f91aadb146f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f91ae3e33d3 in clone () at /usr/lib/libc.so.6

Thread 5 (Thread 0x7f9190c66700 (LWP 2244)):
#0  0x00007f91aadb7cf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f9192334b8c in  () at /usr/lib/dri/iris_dri.so
#2  0x00007f9192334788 in  () at /usr/lib/dri/iris_dri.so
#3  0x00007f91aadb146f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f91ae3e33d3 in clone () at /usr/lib/libc.so.6

Thread 4 (Thread 0x7f9191467700 (LWP 2243)):
#0  0x00007f91aadb7cf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f9192334b8c in  () at /usr/lib/dri/iris_dri.so
#2  0x00007f9192334788 in  () at /usr/lib/dri/iris_dri.so
#3  0x00007f91aadb146f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f91ae3e33d3 in clone () at /usr/lib/libc.so.6

Thread 3 (Thread 0x7f9191c68700 (LWP 2242)):
#0  0x00007f91aadb7cf5 in pthread_cond_wait@@GLIBC_2.3.2 () at /usr/lib/libpthread.so.0
#1  0x00007f9192334b8c in  () at /usr/lib/dri/iris_dri.so
#2  0x00007f9192334788 in  () at /usr/lib/dri/iris_dri.so
#3  0x00007f91aadb146f in start_thread () at /usr/lib/libpthread.so.0
#4  0x00007f91ae3e33d3 in clone () at /usr/lib/libc.so.6

Thread 2 (Thread 0x7f919454a700 (LWP 2241)):
#0  0x00007f91ae3d8abf in poll () at /usr/lib/libc.so.6
#1  0x00007f919ea2b63b in  () at /usr/lib/libxcb.so.1
#2  0x00007f919ea2d37b in xcb_wait_for_event () at /usr/lib/libxcb.so.1
#3  0x00007f9194e5ead1 in  () at /usr/lib/libQt5XcbQpa.so.5
#4  0x00007f91ae778e36 in  () at /usr/lib/libQt5Core.so.5
#5  0x00007f91aadb146f in start_thread () at /usr/lib/libpthread.so.0
#6  0x00007f91ae3e33d3 in clone () at /usr/lib/libc.so.6

Thread 1 (Thread 0x7f919530bb80 (LWP 2240)):
#0  0x00007f91ae3d8abf in poll () at /usr/lib/libc.so.6
#1  0x00007f919ea2b63b in  () at /usr/lib/libxcb.so.1
#2  0x00007f919ea2bd81 in  () at /usr/lib/libxcb.so.1
#3  0x00007f919ea2c007 in  () at /usr/lib/libxcb.so.1
#4  0x00007f919ea2d2ff in xcb_request_check () at /usr/lib/libxcb.so.1
#5  0x00007f9194e4f6ac in  () at /usr/lib/libQt5XcbQpa.so.5
#6  0x00007f9194e500d8 in  () at /usr/lib/libQt5XcbQpa.so.5
#7  0x00007f9194e51f2a in  () at /usr/lib/libQt5XcbQpa.so.5
#8  0x00007f9194e51ff9 in  () at /usr/lib/libQt5XcbQpa.so.5
#9  0x00007f91aeedae3b in QBackingStore::~QBackingStore() () at /usr/lib/libQt5Gui.so.5
#10 0x00007f91af41bc59 in  () at /usr/lib/libQt5Widgets.so.5
#11 0x00007f91af41bcd5 in QWidgetPrivate::deleteTLSysExtra() () at /usr/lib/libQt5Widgets.so.5
#12 0x00007f91af422a19 in QWidget::destroy(bool, bool) () at /usr/lib/libQt5Widgets.so.5
#13 0x00007f91af42aafc in QWidget::~QWidget() () at /usr/lib/libQt5Widgets.so.5
#14 0x00007f91b02deafa in Digikam::DCursorTracker::~DCursorTracker() () at /usr/lib/libdigikamcore.so.6.4.0
#15 0x00007f91ae97eb7e in QObjectPrivate::deleteChildren() () at /usr/lib/libQt5Core.so.5
#16 0x00007f91af42aade in QWidget::~QWidget() () at /usr/lib/libQt5Widgets.so.5
#17 0x00007f91af595dca in QSlider::~QSlider() () at /usr/lib/libQt5Widgets.so.5
#18 0x00007f91ae97eb7e in QObjectPrivate::deleteChildren() () at /usr/lib/libQt5Core.so.5
#19 0x00007f91af42aade in QWidget::~QWidget() () at /usr/lib/libQt5Widgets.so.5
#20 0x00007f91b02dd64a in Digikam::DZoomBar::~DZoomBar() () at /usr/lib/libdigikamcore.so.6.4.0
#21 0x00007f91ae97eb7e in QObjectPrivate::deleteChildren() () at /usr/lib/libQt5Core.so.5
#22 0x00007f91af42aade in QWidget::~QWidget() () at /usr/lib/libQt5Widgets.so.5
#23 0x00007f91af5a8d2a in QStatusBar::~QStatusBar() () at /usr/lib/libQt5Widgets.so.5
#24 0x00007f91ae97eb7e in QObjectPrivate::deleteChildren() () at /usr/lib/libQt5Core.so.5
#25 0x00007f91af42aade in QWidget::~QWidget() () at /usr/lib/libQt5Widgets.so.5
#26 0x00007f91ab6699c5 in KMainWindow::~KMainWindow() () at /usr/lib/libKF5XmlGui.so.5
#27 0x00007f91b0ef9c71 in Digikam::DigikamApp::~DigikamApp() () at /usr/lib/libdigikamgui.so.6.4.0
#28 0x00007f91b0efb31a in Digikam::DigikamApp::~DigikamApp() () at /usr/lib/libdigikamgui.so.6.4.0
#29 0x00007f91ae981e40 in QObject::event(QEvent*) () at /usr/lib/libQt5Core.so.5
#30 0x00007f91af42f299 in QWidget::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#31 0x00007f91af5494f5 in QMainWindow::event(QEvent*) () at /usr/lib/libQt5Widgets.so.5
#32 0x00007f91ab66befc in KMainWindow::event(QEvent*) () at /usr/lib/libKF5XmlGui.so.5
#33 0x00007f91ab6b7578 in KXmlGuiWindow::event(QEvent*) () at /usr/lib/libKF5XmlGui.so.5
#34 0x00007f91af3eb362 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#35 0x00007f91af3f4839 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/libQt5Widgets.so.5
#36 0x00007f91ae954ac2 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/libQt5Core.so.5
#37 0x00007f91ae957326 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/libQt5Core.so.5
#38 0x00007f91ae9ad814 in  () at /usr/lib/libQt5Core.so.5
#39 0x00007f91a704f9be in g_main_context_dispatch () at /usr/lib/libglib-2.0.so.0
#40 0x00007f91a7051831 in  () at /usr/lib/libglib-2.0.so.0
#41 0x00007f91a7051871 in g_main_context_iteration () at /usr/lib/libglib-2.0.so.0
#42 0x00007f91ae9ace60 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#43 0x00007f91ae95362c in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/libQt5Core.so.5
#44 0x00007f91ae95b636 in QCoreApplication::exec() () at /usr/lib/libQt5Core.so.5
#45 0x000055fb63bfe391 in main ()
[Inferior 1 (process 2240) detached]

Reported using DrKonqi
Comment 1 Martin Unzner 2020-04-01 18:57:51 UTC 
I had to upload the coredump somewhere else:

https://www.dropbox.com/s/ddsvbbt2nnfgffs/core.bz2?dl=0

Digikam version installed at time of crash was 6.4.0-7
Comment 2 Maik Qualmann 2020-04-01 19:09:35 UTC 
It crashes in Image Magick Loader. I think we will not be able to reproduce it for digiKam-7.0.0-Beta3 because of some changes.

Maik