Application: digikam (5.9.0)
 (Compiled from sources)
Qt Version: 5.9.5
Frameworks Version: 5.42.0
Operating System: Linux 4.14.23-ck1-mainline-core2-rjvb x86_64
Distribution: Ubuntu 14.04.5 LTS

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

I was exitting from a session in which I had added a few picture to a collection on a NAS mounted using AFP FUSE. I had requested a refresh of the folder in question but cancelled the scan after a while when I noticed it was scanning the entire remote collection instead of just the folder.
When done (checking the new pictures) I quit digiKam and got this crash.

Terminal output:
...
digikam.general: Cannot create thumbnail for  "/home/bertin/mnt/TCAPRJVB/tCapRJVB1/Photos/2010/Espana-201008/11500807/deltebre.MOV"
digikam.general: Thumbnail is null for  "/home/bertin/mnt/TCAPRJVB/tCapRJVB1/Photos/2010/Espana-201008/11500807/deltebre.MOV"
QSqlQuery::prepare: database not open
QSqlDatabasePrivate::removeDatabase: connection 'digikamDatabase-58743344' is still in use, all queries will cease to work.
QSqlDatabasePrivate::addDatabase: duplicate connection name 'digikamDatabase-58743344', old connection removed.
digikam.database: No itemShortInfo could be retrieved from the database for image "_DSC3514.JPG"
KCrash: Application 'digikam.bin' crashing...
KCrash: Attempting to start /opt/local/lib/x86_64-linux-gnu/libexec/drkonqi from kdeinit
sock_file=/run/user/505/kdeinit5__0
QSocketNotifier: Invalid socket 10 and type 'Read', disabling...
QSocketNotifier: Invalid socket 14 and type 'Read', disabling...
QObject::disconnect: Unexpected null parameter
ICE default IO error handler doing an exit(), pid = 17363, errno = 9
QThreadStorage: Thread 0x3807700 exited after QThreadStorage 15 destroyed
QThreadStorage: Thread 0x3807700 exited after QThreadStorage 12 destroyed

-- Backtrace:
Application: digiKam (digikam), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
To enable execution of this file add
	add-auto-load-safe-path /opt/local/lib/libstdc++.so.6.0.24-gdb.py
line to your configuration file "/home/bertin/.gdbinit".
To completely disable this security protection add
	set auto-load safe-path /
line to your configuration file "/home/bertin/.gdbinit".
For more information about this security protection see the
"Auto-loading safe path" section in the GDB manual.  E.g., run from the shell:
	info "(gdb)Auto-loading safe path"
[Current thread is 1 (Thread 0x7f10a91efac0 (LWP 17363))]

Thread 27 (Thread 0x7f106aa77700 (LWP 17702)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f1094ca68f8 in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_linux-ports_lang_gcc7/gcc7/work/build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
#2  std::condition_variable::wait (this=<optimized out>, __lock=...) at /opt/local/var/lnxports/build/_opt_local_linux-ports_lang_gcc7/gcc7/work/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00007f109f75b4da in void std::_V2::condition_variable_any::wait<std::unique_lock<bmalloc::Mutex> >(std::unique_lock<bmalloc::Mutex>&) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#4  0x00007f109f75b3db in bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>::threadEntryPoint(bmalloc::AsyncTask<bmalloc::Heap, void (bmalloc::Heap::*)()>*) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#5  0x00007f1094caa8a1 in std::execute_native_thread_routine (__p=0x1a5abd0) at /opt/local/var/lnxports/build/_opt_local_linux-ports_lang_gcc7/gcc7/work/gcc-7.3.0/libstdc++-v3/src/c++11/thread.cc:83
#6  0x00007f10a6635184 in start_thread (arg=0x7f106aa77700) at pthread_create.c:312
#7  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 26 (Thread 0x7f105d891700 (LWP 17712)):
#0  0x00007f1094710c9d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f109417da51 in g_main_context_poll.isra.9 (n_fds=1, fds=0x7f1058003020, timeout=<optimized out>, context=0x7f1058000990) at gmain.c:4192
#2  g_main_context_iterate.isra.31.lto_priv.140 (context=0x7f1058000990, block=<optimized out>, dispatch=1) at gmain.c:3886
#3  0x00007f1094148d4c in g_main_context_iteration (context=0x7f1058000990, may_block=may_block@entry=1) at gmain.c:3952
#4  0x00007f1097c2defb in QEventDispatcherGlib::processEvents (this=0x7f10580008c0, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f1097bd0323 in QEventLoop::exec (this=this@entry=0x7f105d890af0, flags=..., flags@entry=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/kernel/qeventloop.cpp:212
#6  0x00007f10979ced5a in QThread::exec (this=this@entry=0x7f109ac7f460 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread.cpp:515
#7  0x00007f109aa09fa5 in QDBusConnectionManager::run (this=0x7f109ac7f460 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/dbus/qdbusconnection.cpp:178
#8  0x00007f10979d4493 in QThreadPrivate::start (arg=0x7f109ac7f460 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#9  0x00007f10a6635184 in start_thread (arg=0x7f105d891700) at pthread_create.c:312
#10 0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 25 (Thread 0x7f10568b9700 (LWP 18216)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f10979d59d3 in wait (time=18446744073709551615, this=0x25dc810) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x25d9c88, time=18446744073709551615) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:215
#3  0x00007f10a7936ffc in Digikam::ParkingThread::run (this=0x25d9c70) at /opt/local/var/lnxports/build/_opt_local_site-ports_kf5_kf5-digikam/kf5-digikam/work/digikam-5.9.0/core/libs/threads/threadmanager.cpp:115
#4  0x00007f10979d4493 in QThreadPrivate::start (arg=0x25d9c70) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#5  0x00007f10a6635184 in start_thread (arg=0x7f10568b9700) at pthread_create.c:312
#6  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 24 (Thread 0x7f103dffb700 (LWP 18227)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f10979d5c93 in wait (time=18446744073709551615, this=0x2622a30) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x26bd198, readWriteLock=readWriteLock@entry=0x26bd180, time=time@entry=18446744073709551615) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:239
#3  0x00007f10a156c25f in take (timeout_ms=18446744073709551615, isValid=0x0, this=0x26bd160) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/utils/BlockingQueue.h:193
#4  QtAV::ExtractThread::run() (this=0x26bd140) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/VideoFrameExtractor.cpp:101
#5  0x00007f10979d4493 in QThreadPrivate::start (arg=0x26bd140) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#6  0x00007f10a6635184 in start_thread (arg=0x7f103dffb700) at pthread_create.c:312
#7  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 23 (Thread 0x7f0fc7ffd700 (LWP 18252)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f10979d5c93 in wait (time=18446744073709551615, this=0x272d760) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x272d2c8, readWriteLock=readWriteLock@entry=0x272d2b0, time=time@entry=18446744073709551615) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:239
#3  0x00007f10a156c25f in take (timeout_ms=18446744073709551615, isValid=0x0, this=0x272d290) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/utils/BlockingQueue.h:193
#4  QtAV::ExtractThread::run() (this=0x272d270) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/VideoFrameExtractor.cpp:101
#5  0x00007f10979d4493 in QThreadPrivate::start (arg=0x272d270) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#6  0x00007f10a6635184 in start_thread (arg=0x7f0fc7ffd700) at pthread_create.c:312
#7  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 22 (Thread 0x7f0fc49ff700 (LWP 18460)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f1094ca68f8 in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_linux-ports_lang_gcc7/gcc7/work/build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
#2  std::condition_variable::wait (this=<optimized out>, __lock=...) at /opt/local/var/lnxports/build/_opt_local_linux-ports_lang_gcc7/gcc7/work/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00007f109e58cc59 in WTF::ParkingLot::parkConditionally(void const*, std::function<bool ()>, std::function<void ()>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#4  0x00007f109dd08542 in bool WTF::ConditionBase::waitUntil<WTF::Lock>(WTF::Lock&, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#5  0x00007f109dfb846e in JSC::DFG::Worklist::runThread(JSC::DFG::ThreadData*) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#6  0x00007f109e590053 in WTF::threadEntryPoint(void*) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#7  0x00007f109e5b5f3d in WTF::wtfThreadEntryPoint(void*) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#8  0x00007f10a6635184 in start_thread (arg=0x7f0fc49ff700) at pthread_create.c:312
#9  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 21 (Thread 0x7f0f7bfe7700 (LWP 18704)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f1094ca68f8 in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_linux-ports_lang_gcc7/gcc7/work/build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
#2  std::condition_variable::wait (this=<optimized out>, __lock=...) at /opt/local/var/lnxports/build/_opt_local_linux-ports_lang_gcc7/gcc7/work/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00007f109e58cc59 in WTF::ParkingLot::parkConditionally(void const*, std::function<bool ()>, std::function<void ()>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#4  0x00007f109dd08542 in bool WTF::ConditionBase::waitUntil<WTF::Lock>(WTF::Lock&, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#5  0x00007f109e58c093 in WTF::ParallelHelperPool::waitForClientWithTask(WTF::Locker<WTF::LockBase> const&) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#6  0x00007f109e58be62 in WTF::ParallelHelperPool::helperThreadBody() () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#7  0x00007f109e590053 in WTF::threadEntryPoint(void*) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#8  0x00007f109e5b5f3d in WTF::wtfThreadEntryPoint(void*) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#9  0x00007f10a6635184 in start_thread (arg=0x7f0f7bfe7700) at pthread_create.c:312
#10 0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 20 (Thread 0x7f0f7b7e6700 (LWP 18705)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f1094ca68f8 in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_linux-ports_lang_gcc7/gcc7/work/build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
#2  std::condition_variable::wait (this=<optimized out>, __lock=...) at /opt/local/var/lnxports/build/_opt_local_linux-ports_lang_gcc7/gcc7/work/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00007f109e58cc59 in WTF::ParkingLot::parkConditionally(void const*, std::function<bool ()>, std::function<void ()>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#4  0x00007f109dd08542 in bool WTF::ConditionBase::waitUntil<WTF::Lock>(WTF::Lock&, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#5  0x00007f109e58c093 in WTF::ParallelHelperPool::waitForClientWithTask(WTF::Locker<WTF::LockBase> const&) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#6  0x00007f109e58be62 in WTF::ParallelHelperPool::helperThreadBody() () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#7  0x00007f109e590053 in WTF::threadEntryPoint(void*) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#8  0x00007f109e5b5f3d in WTF::wtfThreadEntryPoint(void*) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#9  0x00007f10a6635184 in start_thread (arg=0x7f0f7b7e6700) at pthread_create.c:312
#10 0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 19 (Thread 0x7f0f7afe5700 (LWP 18706)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f1094ca68f8 in __gthread_cond_wait (__mutex=<optimized out>, __cond=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_linux-ports_lang_gcc7/gcc7/work/build/x86_64-pc-linux-gnu/libstdc++-v3/include/x86_64-pc-linux-gnu/bits/gthr-default.h:864
#2  std::condition_variable::wait (this=<optimized out>, __lock=...) at /opt/local/var/lnxports/build/_opt_local_linux-ports_lang_gcc7/gcc7/work/gcc-7.3.0/libstdc++-v3/src/c++11/condition_variable.cc:53
#3  0x00007f109e58cc59 in WTF::ParkingLot::parkConditionally(void const*, std::function<bool ()>, std::function<void ()>, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#4  0x00007f109dd08542 in bool WTF::ConditionBase::waitUntil<WTF::Lock>(WTF::Lock&, std::chrono::time_point<std::chrono::_V2::steady_clock, std::chrono::duration<long, std::ratio<1l, 1000000000l> > >) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#5  0x00007f109e58c093 in WTF::ParallelHelperPool::waitForClientWithTask(WTF::Locker<WTF::LockBase> const&) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#6  0x00007f109e58be62 in WTF::ParallelHelperPool::helperThreadBody() () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#7  0x00007f109e590053 in WTF::threadEntryPoint(void*) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#8  0x00007f109e5b5f3d in WTF::wtfThreadEntryPoint(void*) () from /opt/local/libexec/qt5/lib/libQt5WebKit.so.5
#9  0x00007f10a6635184 in start_thread (arg=0x7f0f7afe5700) at pthread_create.c:312
#10 0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 18 (Thread 0x7f0f67416700 (LWP 19333)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f10979d5c93 in wait (time=18446744073709551615, this=0x53e3880) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x53e33e8, readWriteLock=readWriteLock@entry=0x53e33d0, time=time@entry=18446744073709551615) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:239
#3  0x00007f10a156c25f in take (timeout_ms=18446744073709551615, isValid=0x0, this=0x53e33b0) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/utils/BlockingQueue.h:193
#4  QtAV::ExtractThread::run() (this=0x53e3390) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/VideoFrameExtractor.cpp:101
#5  0x00007f10979d4493 in QThreadPrivate::start (arg=0x53e3390) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#6  0x00007f10a6635184 in start_thread (arg=0x7f0f67416700) at pthread_create.c:312
#7  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 17 (Thread 0x7f0fad57b700 (LWP 19350)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f10979d5c93 in wait (time=18446744073709551615, this=0x523f760) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x523f2c8, readWriteLock=readWriteLock@entry=0x523f2b0, time=time@entry=18446744073709551615) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:239
#3  0x00007f10a156c25f in take (timeout_ms=18446744073709551615, isValid=0x0, this=0x523f290) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/utils/BlockingQueue.h:193
#4  QtAV::ExtractThread::run() (this=0x523f270) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/VideoFrameExtractor.cpp:101
#5  0x00007f10979d4493 in QThreadPrivate::start (arg=0x523f270) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#6  0x00007f10a6635184 in start_thread (arg=0x7f0fad57b700) at pthread_create.c:312
#7  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 16 (Thread 0x7f0f86ffd700 (LWP 19428)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f10979d5c93 in wait (time=18446744073709551615, this=0x592a020) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x5929b88, readWriteLock=readWriteLock@entry=0x5929b70, time=time@entry=18446744073709551615) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:239
#3  0x00007f10a156c25f in take (timeout_ms=18446744073709551615, isValid=0x0, this=0x5929b50) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/utils/BlockingQueue.h:193
#4  QtAV::ExtractThread::run() (this=0x5929b30) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/VideoFrameExtractor.cpp:101
#5  0x00007f10979d4493 in QThreadPrivate::start (arg=0x5929b30) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#6  0x00007f10a6635184 in start_thread (arg=0x7f0f86ffd700) at pthread_create.c:312
#7  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 15 (Thread 0x7f0f877fe700 (LWP 19429)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f10979d5c93 in wait (time=18446744073709551615, this=0x592c070) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x592bbd8, readWriteLock=readWriteLock@entry=0x592bbc0, time=time@entry=18446744073709551615) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:239
#3  0x00007f10a156c25f in take (timeout_ms=18446744073709551615, isValid=0x0, this=0x592bba0) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/utils/BlockingQueue.h:193
#4  QtAV::ExtractThread::run() (this=0x592bb80) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/VideoFrameExtractor.cpp:101
#5  0x00007f10979d4493 in QThreadPrivate::start (arg=0x592bb80) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#6  0x00007f10a6635184 in start_thread (arg=0x7f0f877fe700) at pthread_create.c:312
#7  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 14 (Thread 0x7f0fadd7c700 (LWP 19430)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f10979d5c93 in wait (time=18446744073709551615, this=0x592de90) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x592d9f8, readWriteLock=readWriteLock@entry=0x592d9e0, time=time@entry=18446744073709551615) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:239
#3  0x00007f10a156c25f in take (timeout_ms=18446744073709551615, isValid=0x0, this=0x592d9c0) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/utils/BlockingQueue.h:193
#4  QtAV::ExtractThread::run() (this=0x592d9a0) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/VideoFrameExtractor.cpp:101
#5  0x00007f10979d4493 in QThreadPrivate::start (arg=0x592d9a0) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#6  0x00007f10a6635184 in start_thread (arg=0x7f0fadd7c700) at pthread_create.c:312
#7  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 13 (Thread 0x7f0fae57d700 (LWP 19431)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f10979d5c93 in wait (time=18446744073709551615, this=0x59302a0) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x592fe08, readWriteLock=readWriteLock@entry=0x592fdf0, time=time@entry=18446744073709551615) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:239
#3  0x00007f10a156c25f in take (timeout_ms=18446744073709551615, isValid=0x0, this=0x592fdd0) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/utils/BlockingQueue.h:193
#4  QtAV::ExtractThread::run() (this=0x592fdb0) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/VideoFrameExtractor.cpp:101
#5  0x00007f10979d4493 in QThreadPrivate::start (arg=0x592fdb0) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#6  0x00007f10a6635184 in start_thread (arg=0x7f0fae57d700) at pthread_create.c:312
#7  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 12 (Thread 0x7f0faefff700 (LWP 19432)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f10979d5c93 in wait (time=18446744073709551615, this=0x2649310) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x2648e78, readWriteLock=readWriteLock@entry=0x2648e60, time=time@entry=18446744073709551615) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:239
#3  0x00007f10a156c25f in take (timeout_ms=18446744073709551615, isValid=0x0, this=0x2648e40) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/utils/BlockingQueue.h:193
#4  QtAV::ExtractThread::run() (this=0x2648e20) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/VideoFrameExtractor.cpp:101
#5  0x00007f10979d4493 in QThreadPrivate::start (arg=0x2648e20) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#6  0x00007f10a6635184 in start_thread (arg=0x7f0faefff700) at pthread_create.c:312
#7  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 11 (Thread 0x7f0facd7a700 (LWP 19433)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f10979d5c93 in wait (time=18446744073709551615, this=0x5957990) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x59574f8, readWriteLock=readWriteLock@entry=0x59574e0, time=time@entry=18446744073709551615) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:239
#3  0x00007f10a156c25f in take (timeout_ms=18446744073709551615, isValid=0x0, this=0x59574c0) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/utils/BlockingQueue.h:193
#4  QtAV::ExtractThread::run() (this=0x59574a0) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/VideoFrameExtractor.cpp:101
#5  0x00007f10979d4493 in QThreadPrivate::start (arg=0x59574a0) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#6  0x00007f10a6635184 in start_thread (arg=0x7f0facd7a700) at pthread_create.c:312
#7  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 10 (Thread 0x7f0f9b7fe700 (LWP 19434)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f10979d5c93 in wait (time=18446744073709551615, this=0x5959be0) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x5959748, readWriteLock=readWriteLock@entry=0x5959730, time=time@entry=18446744073709551615) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:239
#3  0x00007f10a156c25f in take (timeout_ms=18446744073709551615, isValid=0x0, this=0x5959710) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/utils/BlockingQueue.h:193
#4  QtAV::ExtractThread::run() (this=0x59596f0) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/VideoFrameExtractor.cpp:101
#5  0x00007f10979d4493 in QThreadPrivate::start (arg=0x59596f0) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#6  0x00007f10a6635184 in start_thread (arg=0x7f0f9b7fe700) at pthread_create.c:312
#7  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 9 (Thread 0x7f0f9affd700 (LWP 19435)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f10979d5c93 in wait (time=18446744073709551615, this=0x595bbd0) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x595b778, readWriteLock=readWriteLock@entry=0x595b760, time=time@entry=18446744073709551615) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:239
#3  0x00007f10a156c25f in take (timeout_ms=18446744073709551615, isValid=0x0, this=0x595b740) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/utils/BlockingQueue.h:193
#4  QtAV::ExtractThread::run() (this=0x595b720) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/VideoFrameExtractor.cpp:101
#5  0x00007f10979d4493 in QThreadPrivate::start (arg=0x595b720) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#6  0x00007f10a6635184 in start_thread (arg=0x7f0f9affd700) at pthread_create.c:312
#7  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 8 (Thread 0x7f0f9a7fc700 (LWP 19436)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f10979d5c93 in wait (time=18446744073709551615, this=0x595e200) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x595dd68, readWriteLock=readWriteLock@entry=0x595dd50, time=time@entry=18446744073709551615) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:239
#3  0x00007f10a156c25f in take (timeout_ms=18446744073709551615, isValid=0x0, this=0x595dd30) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/utils/BlockingQueue.h:193
#4  QtAV::ExtractThread::run() (this=0x595dd10) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/VideoFrameExtractor.cpp:101
#5  0x00007f10979d4493 in QThreadPrivate::start (arg=0x595dd10) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#6  0x00007f10a6635184 in start_thread (arg=0x7f0f9a7fc700) at pthread_create.c:312
#7  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 7 (Thread 0x7f0f997fa700 (LWP 19437)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f10979d5c93 in wait (time=18446744073709551615, this=0x5932280) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x5931e28, readWriteLock=readWriteLock@entry=0x5931e10, time=time@entry=18446744073709551615) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:239
#3  0x00007f10a156c25f in take (timeout_ms=18446744073709551615, isValid=0x0, this=0x5931df0) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/utils/BlockingQueue.h:193
#4  QtAV::ExtractThread::run() (this=0x5931dd0) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/VideoFrameExtractor.cpp:101
#5  0x00007f10979d4493 in QThreadPrivate::start (arg=0x5931dd0) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#6  0x00007f10a6635184 in start_thread (arg=0x7f0f997fa700) at pthread_create.c:312
#7  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 6 (Thread 0x7f0f98ff9700 (LWP 19438)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f10979d5c93 in wait (time=18446744073709551615, this=0x4fb4be0) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x4fb4748, readWriteLock=readWriteLock@entry=0x4fb4730, time=time@entry=18446744073709551615) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:239
#3  0x00007f10a156c25f in take (timeout_ms=18446744073709551615, isValid=0x0, this=0x4fb4710) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/utils/BlockingQueue.h:193
#4  QtAV::ExtractThread::run() (this=0x4fb46f0) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/VideoFrameExtractor.cpp:101
#5  0x00007f10979d4493 in QThreadPrivate::start (arg=0x4fb46f0) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#6  0x00007f10a6635184 in start_thread (arg=0x7f0f98ff9700) at pthread_create.c:312
#7  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 5 (Thread 0x7f0f99ffb700 (LWP 23980)):
#0  0x00007f1094710c9d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f109417da51 in g_main_context_poll.isra.9 (n_fds=1, fds=0x7f0f880b6800, timeout=<optimized out>, context=0x7f0f883396f0) at gmain.c:4192
#2  g_main_context_iterate.isra.31.lto_priv.140 (context=0x7f0f883396f0, block=<optimized out>, dispatch=1) at gmain.c:3886
#3  0x00007f1094148d4c in g_main_context_iteration (context=0x7f0f883396f0, may_block=may_block@entry=1) at gmain.c:3952
#4  0x00007f1097c2defb in QEventDispatcherGlib::processEvents (this=0x7f0f8806dcc0, flags=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f1097bd0323 in QEventLoop::exec (this=this@entry=0x7f0f99ffab20, flags=..., flags@entry=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/kernel/qeventloop.cpp:212
#6  0x00007f10979ced5a in QThread::exec (this=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread.cpp:515
#7  0x00007f10979d4493 in QThreadPrivate::start (arg=0x55f98b0) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#8  0x00007f10a6635184 in start_thread (arg=0x7f0f99ffb700) at pthread_create.c:312
#9  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7f0f7f9f9700 (LWP 22407)):
[KCrash Handler]
#6  0x00007f10979cb5b7 in compare_exchange_strong (__m2=std::memory_order_acquire, __m1=std::memory_order_acquire, __p2=<optimized out>, __p1=<synthetic pointer>, this=0x78) at /usr/include/c++/7/bits/atomic_base.h:752
#7  compare_exchange_strong (__m2=std::memory_order_acquire, __m1=std::memory_order_acquire, __p2=<optimized out>, __p1=<synthetic pointer>, this=0x78) at /usr/include/c++/7/atomic:498
#8  testAndSetAcquire<QMutexData*> (currentValue=<synthetic pointer>, newValue=<optimized out>, expectedValue=0x0, _q_value=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/include/QtCore/../../src/corelib/arch/qatomic_cxx11.h:290
#9  testAndSetAcquire (currentValue=<synthetic pointer>, newValue=<optimized out>, expectedValue=0x0, this=0x78) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/include/QtCore/../../src/corelib/thread/qbasicatomic.h:262
#10 fastTryLock (current=<synthetic pointer>, this=0x78) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qmutex.h:101
#11 QMutex::lock (this=0x78) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qmutex.cpp:224
#12 0x00007f10a791e211 in Digikam::ThumbnailLoadingTask::execute (this=0x6a26000) at /opt/local/var/lnxports/build/_opt_local_site-ports_kf5_kf5-digikam/kf5-digikam/work/digikam-5.9.0/core/libs/threadimageio/thumbnailtask.cpp:177
#13 0x00007f10a78fcd4e in Digikam::LoadSaveThread::run (this=0x7f10a85d1820 <Digikam::(anonymous namespace)::Q_QGS_defaultObject::innerFunction()::holder>) at /opt/local/var/lnxports/build/_opt_local_site-ports_kf5_kf5-digikam/kf5-digikam/work/digikam-5.9.0/core/libs/threadimageio/loadsavethread.cpp:133
#14 0x00007f10a7938416 in Digikam::DynamicThread::DynamicThreadPriv::run (this=0x272c630) at /opt/local/var/lnxports/build/_opt_local_site-ports_kf5_kf5-digikam/kf5-digikam/work/digikam-5.9.0/core/libs/threads/dynamicthread.cpp:183
#15 0x00007f10979d1175 in QThreadPoolThread::run (this=0x3805a30) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthreadpool.cpp:99
#16 0x00007f10979d4493 in QThreadPrivate::start (arg=0x3805a30) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#17 0x00007f10a6635184 in start_thread (arg=0x7f0f7f9f9700) at pthread_create.c:312
#18 0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 3 (Thread 0x7f0f7f1f8700 (LWP 24185)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f10979d59d3 in wait (time=18446744073709551615, this=0x272d010) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x272cfd8, time=18446744073709551615) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:215
#3  0x00007f10a7920a3c in Digikam::VideoThumbnailerJob::run (this=0x272cb90) at /opt/local/var/lnxports/build/_opt_local_site-ports_kf5_kf5-digikam/kf5-digikam/work/digikam-5.9.0/core/libs/threadimageio/videothumbnailerjob.cpp:165
#4  0x00007f10979d4493 in QThreadPrivate::start (arg=0x272cb90) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#5  0x00007f10a6635184 in start_thread (arg=0x7f0f7f1f8700) at pthread_create.c:312
#6  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 2 (Thread 0x7f1057fff700 (LWP 24491)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f10979d5c93 in wait (time=18446744073709551615, this=0x4144730) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=this@entry=0x2b42098, readWriteLock=readWriteLock@entry=0x2b42080, time=time@entry=18446744073709551615) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:239
#3  0x00007f10a156c25f in take (timeout_ms=18446744073709551615, isValid=0x0, this=0x2b42060) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/utils/BlockingQueue.h:193
#4  QtAV::ExtractThread::run() (this=0x2b42040) at /opt/local/var/lnxports/build/_opt_local_site-ports_multimedia_QtAV/QtAV-devel/work/QtAV-git/src/VideoFrameExtractor.cpp:101
#5  0x00007f10979d4493 in QThreadPrivate::start (arg=0x2b42040) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qthread_unix.cpp:368
#6  0x00007f10a6635184 in start_thread (arg=0x7f1057fff700) at pthread_create.c:312
#7  0x00007f109471e03d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 1 (Thread 0x7f10a91efac0 (LWP 17363)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f10979d59d3 in wait (time=18446744073709551615, this=0x272c680) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:143
#2  QWaitCondition::wait (this=<optimized out>, mutex=0x272c660, time=18446744073709551615) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/thread/qwaitcondition_unix.cpp:215
#3  0x00007f10a793864d in wait (this=<optimized out>, locker=...) at /opt/local/var/lnxports/build/_opt_local_site-ports_kf5_kf5-digikam/kf5-digikam/work/digikam-5.9.0/core/libs/threads/dynamicthread.cpp:350
#4  Digikam::DynamicThread::shutDown (this=0x7f10a85d1820 <Digikam::(anonymous namespace)::Q_QGS_defaultObject::innerFunction()::holder>) at /opt/local/var/lnxports/build/_opt_local_site-ports_kf5_kf5-digikam/kf5-digikam/work/digikam-5.9.0/core/libs/threads/dynamicthread.cpp:219
#5  0x00007f10a78fdf54 in Digikam::ManagedLoadSaveThread::shutDown (this=0x7f10a85d1820 <Digikam::(anonymous namespace)::Q_QGS_defaultObject::innerFunction()::holder>) at /opt/local/var/lnxports/build/_opt_local_site-ports_kf5_kf5-digikam/kf5-digikam/work/digikam-5.9.0/core/libs/threadimageio/managedloadsavethread.cpp:91
#6  0x00007f10a7916620 in Digikam::ThumbnailLoadThread::~ThumbnailLoadThread (this=0x7f10a85d1820 <Digikam::(anonymous namespace)::Q_QGS_defaultObject::innerFunction()::holder>) at /opt/local/var/lnxports/build/_opt_local_site-ports_kf5_kf5-digikam/kf5-digikam/work/digikam-5.9.0/core/libs/threadimageio/thumbnailloadthread.cpp:204
#7  0x00007f10a791b4b6 in Digikam::(anonymous namespace)::Q_QGS_defaultObject::innerFunction()::Holder::~Holder() (this=0x272c6ac) at /opt/local/var/lnxports/build/_opt_local_site-ports_kf5_kf5-digikam/kf5-digikam/work/digikam-5.9.0/core/libs/threadimageio/thumbnailloadthread.cpp:164
#8  0x00007f109465c1a9 in __run_exit_handlers (status=1, listp=0x7f10949e26c8 <__exit_funcs>, run_list_atexit=run_list_atexit@entry=true) at exit.c:82
#9  0x00007f109465c1f5 in __GI_exit (status=<optimized out>) at exit.c:104
#10 0x00007f10a5b4b73a in ?? () from /usr/lib/x86_64-linux-gnu/libICE.so.6
#11 0x00007f10a5b526b4 in IceFlush () from /usr/lib/x86_64-linux-gnu/libICE.so.6
#12 0x00007f10a5d63450 in SmcCloseConnection () from /usr/lib/x86_64-linux-gnu/libSM.so.6
#13 0x00007f1069847863 in QXcbSessionManager::~QXcbSessionManager (this=0x1af1660, __in_chrg=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/plugins/platforms/xcb/qxcbsessionmanager.cpp:384
#14 0x00007f10698478b9 in QXcbSessionManager::~QXcbSessionManager (this=0x1af1660, __in_chrg=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/plugins/platforms/xcb/qxcbsessionmanager.cpp:387
#15 0x00007f1098168dcd in ~QSessionManagerPrivate (this=0x1c44cb0, __in_chrg=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/gui/kernel/qsessionmanager.cpp:133
#16 QSessionManagerPrivate::~QSessionManagerPrivate (this=0x1c44cb0, __in_chrg=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/gui/kernel/qsessionmanager.cpp:135
#17 0x00007f1097c0a870 in cleanup (pointer=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/include/QtCore/../../src/corelib/tools/qscopedpointer.h:60
#18 ~QScopedPointer (this=0x1c41728, __in_chrg=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/include/QtCore/../../src/corelib/tools/qscopedpointer.h:107
#19 QObject::~QObject (this=<optimized out>, __in_chrg=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/corelib/kernel/qobject.cpp:887
#20 0x00007f1098168ee9 in QSessionManager::~QSessionManager (this=0x1c41720, __in_chrg=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/gui/kernel/qsessionmanager.cpp:144
#21 0x00007f1098171d33 in QGuiApplication::~QGuiApplication (this=0x7fff0435cb18, __in_chrg=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/gui/kernel/qguiapplication.cpp:616
#22 0x00007f1098a0af20 in QApplication::~QApplication (this=0x7fff0435cb18, __in_chrg=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.9.5/qtbase/src/widgets/kernel/qapplication.cpp:800
#23 0x000000000040828a in main (argc=1, argv=<optimized out>) at /opt/local/var/lnxports/build/_opt_local_site-ports_kf5_kf5-digikam/kf5-digikam/work/digikam-5.9.0/core/app/main/main.cpp:293

Possible duplicates by query: bug 393758, bug 383204.

Reported using DrKonqi