Dear Maintainer,

Hopefully the above info. should make things more easier to figure out.

-- 
          Regards,
          Shirish Agarwal  शिरीष अग्रवाल
  My quotes in this email licensed under CC 3.0
http://creativecommons.org/licenses/by-nc/3.0/
http://flossexperiences.wordpress.com

E493 D466 6D67 59F5 1FD0 930F 870E 9A5B 5869 609C
$ gdb qbittorrent 
GNU gdb (Debian 8.2.1-2) 8.2.1
Copyright (C) 2018 Free Software Foundation, Inc.
License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>
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    <http://www.gnu.org/software/gdb/documentation/>.

--Type <RET> for more, q to quit, c to continue without paging--
For help, type "help".
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Reading symbols from qbittorrent...Reading symbols from 
/usr/lib/debug/.build-id/ad/0f65ab90b9bf916a54c3e15e7050a91eda4ba3.debug...done.
done.
(gdb) set pagination 0
(gdb) run
Starting program: /usr/bin/qbittorrent 
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[New Thread 0x7ffff1ae6700 (LWP 7807)]
[New Thread 0x7fffeb788700 (LWP 8149)]
[New Thread 0x7fffeaf87700 (LWP 8150)]
[New Thread 0x7fffea724700 (LWP 8151)]
[New Thread 0x7fffe9ee9700 (LWP 8152)]
[New Thread 0x7fffe96a9700 (LWP 8153)]
[New Thread 0x7fffe8ea8700 (LWP 8154)]
[New Thread 0x7fffd3fff700 (LWP 8155)]
[New Thread 0x7fffd37fe700 (LWP 8156)]
[New Thread 0x7fffd2ffd700 (LWP 8157)]
[New Thread 0x7fffd27fc700 (LWP 8158)]
[New Thread 0x7fffd1ffb700 (LWP 8159)]
[New Thread 0x7fffd17fa700 (LWP 8160)]
[New Thread 0x7fffd0ff9700 (LWP 8161)]
[New Thread 0x7fffc21a3700 (LWP 8162)]
[New Thread 0x7fffc19a2700 (LWP 8163)]
[New Thread 0x7fffc11a1700 (LWP 8164)]
[New Thread 0x7fffc09a0700 (LWP 8165)]
[New Thread 0x7fff9ffff700 (LWP 8166)]
[New Thread 0x7fff9f7fe700 (LWP 8167)]
[New Thread 0x7fff9effd700 (LWP 8168)]
[New Thread 0x7fff9e7fc700 (LWP 8169)]
[New Thread 0x7fff9dffb700 (LWP 8170)]
[New Thread 0x7fff9d7fa700 (LWP 8171)]
[New Thread 0x7fff9cff9700 (LWP 8172)]
[New Thread 0x7fff7ffff700 (LWP 8173)]
[New Thread 0x7fff7f7fe700 (LWP 8174)]
[New Thread 0x7fff7effd700 (LWP 8175)]
[New Thread 0x7fff7e7fc700 (LWP 8176)]
[New Thread 0x7fff7dffb700 (LWP 8177)]
[New Thread 0x7fff7d7fa700 (LWP 8178)]
[New Thread 0x7fff7cff9700 (LWP 8179)]
[New Thread 0x7fff5ffff700 (LWP 8180)]
[New Thread 0x7fff5f7fe700 (LWP 8181)]
[New Thread 0x7fff5effd700 (LWP 8182)]
[New Thread 0x7fff5e7fc700 (LWP 8183)]
[New Thread 0x7fff5dffb700 (LWP 8474)]
qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 2726, resource 
id: 11364153, major code: 40 (TranslateCoords), minor code: 0
[Thread 0x7fff5dffb700 (LWP 8474) exited]
[Thread 0x7fff9cff9700 (LWP 8172) exited]
[Thread 0x7fff9dffb700 (LWP 8170) exited]
[Thread 0x7fff9e7fc700 (LWP 8169) exited]
[Thread 0x7fff5ffff700 (LWP 8180) exited]
[Thread 0x7fffc11a1700 (LWP 8164) exited]
[Thread 0x7fff7dffb700 (LWP 8177) exited]
[Thread 0x7fffc09a0700 (LWP 8165) exited]
[Thread 0x7fff9f7fe700 (LWP 8167) exited]
[Thread 0x7fff7f7fe700 (LWP 8174) exited]
[Thread 0x7fff7effd700 (LWP 8175) exited]
[Thread 0x7fff5f7fe700 (LWP 8181) exited]
[Thread 0x7fff5e7fc700 (LWP 8183) exited]
[Thread 0x7fff7d7fa700 (LWP 8178) exited]
[Thread 0x7fff7e7fc700 (LWP 8176) exited]
[Thread 0x7fff9d7fa700 (LWP 8171) exited]
[Thread 0x7fff5effd700 (LWP 8182) exited]
[Thread 0x7fff9effd700 (LWP 8168) exited]
[Thread 0x7fff7ffff700 (LWP 8173) exited]
[Thread 0x7fff7cff9700 (LWP 8179) exited]
[Thread 0x7fff9ffff700 (LWP 8166) exited]
[New Thread 0x7fff9ffff700 (LWP 9061)]
[New Thread 0x7fff7cff9700 (LWP 9062)]
[Thread 0x7fff7cff9700 (LWP 9062) exited]
[Thread 0x7fff9ffff700 (LWP 9061) exited]
[New Thread 0x7fff9ffff700 (LWP 9697)]
[Thread 0x7fff9ffff700 (LWP 9697) exited]
[New Thread 0x7fff9ffff700 (LWP 12106)]
[Thread 0x7fff9ffff700 (LWP 12106) exited]
[New Thread 0x7fff9ffff700 (LWP 13714)]
[Thread 0x7fff9ffff700 (LWP 13714) exited]
[New Thread 0x7fff9ffff700 (LWP 15003)]
[Thread 0x7fff9ffff700 (LWP 15003) exited]

Thread 17 "QNetworkAccessM" received signal SIGSEGV, Segmentation fault.
[Switching to Thread 0x7fffc19a2700 (LWP 8163)]
0x00007ffff6bf8ba4 in QHttpNetworkConnectionChannel::sendRequest 
(this=<optimized out>) at access/qhttpnetworkconnectionchannel.cpp:251
251     access/qhttpnetworkconnectionchannel.cpp: No such file or directory.
(gdb) bt 
#0  0x00007ffff6bf8ba4 in QHttpNetworkConnectionChannel::sendRequest() 
(this=<optimized out>) at access/qhttpnetworkconnectionchannel.cpp:251
#1  0x00007ffff6bf7c69 in QHttpNetworkConnectionPrivate::_q_startNextRequest() 
(this=0x7fffac073010) at access/qhttpnetworkconnection.cpp:1044
#2  0x00007ffff68bd182 in QObject::event(QEvent*) (this=0x7fffac075000, 
e=<optimized out>) at kernel/qobject.cpp:1251
#3  0x00007ffff74884b1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) 
(this=this@entry=0x555555db9840, receiver=receiver@entry=0x7fffac075000, 
e=e@entry=0x7fff98003270) at kernel/qapplication.cpp:3726
#4  0x00007ffff748f950 in QApplication::notify(QObject*, QEvent*) 
(this=0x555555db9780, receiver=0x7fffac075000, e=0x7fff98003270) at 
kernel/qapplication.cpp:3485
#5  0x000055555568ac42 in Application::notify(QObject*, QEvent*) 
(this=<optimized out>, receiver=0x7fffac075000, event=<optimized out>) at 
../../src/app/application.cpp:622
#6  0x00007ffff68935a9 in QCoreApplication::notifyInternal2(QObject*, QEvent*) 
(receiver=0x7fffac075000, event=0x7fff98003270) at 
../../include/QtCore/5.11.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:307
#7  0x00007ffff689659b in QCoreApplication::sendEvent(QObject*, QEvent*) 
(event=0x7fff98003270, receiver=<optimized out>) at 
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#8  0x00007ffff689659b in QCoreApplicationPrivate::sendPostedEvents(QObject*, 
int, QThreadData*) (receiver=0x0, event_type=0, data=0x5555564348b0) at 
kernel/qcoreapplication.cpp:1744
#9  0x00007ffff68e5233 in postEventSourceDispatch(GSource*, GSourceFunc, 
gpointer) (s=0x7fffac003f10) at kernel/qeventdispatcher_glib.cpp:276
#10 0x00007ffff5557f2e in g_main_dispatch (context=0x7fffac000bf0) at 
../../../glib/gmain.c:3182
#11 0x00007ffff5557f2e in g_main_context_dispatch 
(context=context@entry=0x7fffac000bf0) at ../../../glib/gmain.c:3847
#12 0x00007ffff55581c8 in g_main_context_iterate 
(context=context@entry=0x7fffac000bf0, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:3920
#13 0x00007ffff555825c in g_main_context_iteration (context=0x7fffac000bf0, 
may_block=may_block@entry=1) at ../../../glib/gmain.c:3981
#14 0x00007ffff68e4863 in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) 
(this=0x7fffac000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#15 0x00007ffff689227b in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) 
(this=this@entry=0x7fffc19a1d60, flags=..., flags@entry=...) at 
../../include/QtCore/../../src/corelib/global/qflags.h:140
#16 0x00007ffff66e1ec6 in QThread::exec() (this=<optimized out>) at 
../../include/QtCore/../../src/corelib/global/qflags.h:120
#17 0x00007ffff66ebaa7 in QThreadPrivate::start(void*) (arg=0x555556434770) at 
thread/qthread_unix.cpp:367
#18 0x00007ffff660ffa3 in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#19 0x00007ffff621d82f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95
(gdb) thread apply all bt

Thread 17 (Thread 0x7fffc19a2700 (LWP 8163)):
#0  0x00007ffff6bf8ba4 in QHttpNetworkConnectionChannel::sendRequest() 
(this=<optimized out>) at access/qhttpnetworkconnectionchannel.cpp:251
#1  0x00007ffff6bf7c69 in QHttpNetworkConnectionPrivate::_q_startNextRequest() 
(this=0x7fffac073010) at access/qhttpnetworkconnection.cpp:1044
#2  0x00007ffff68bd182 in QObject::event(QEvent*) (this=0x7fffac075000, 
e=<optimized out>) at kernel/qobject.cpp:1251
#3  0x00007ffff74884b1 in QApplicationPrivate::notify_helper(QObject*, QEvent*) 
(this=this@entry=0x555555db9840, receiver=receiver@entry=0x7fffac075000, 
e=e@entry=0x7fff98003270) at kernel/qapplication.cpp:3726
#4  0x00007ffff748f950 in QApplication::notify(QObject*, QEvent*) 
(this=0x555555db9780, receiver=0x7fffac075000, e=0x7fff98003270) at 
kernel/qapplication.cpp:3485
#5  0x000055555568ac42 in Application::notify(QObject*, QEvent*) 
(this=<optimized out>, receiver=0x7fffac075000, event=<optimized out>) at 
../../src/app/application.cpp:622
#6  0x00007ffff68935a9 in QCoreApplication::notifyInternal2(QObject*, QEvent*) 
(receiver=0x7fffac075000, event=0x7fff98003270) at 
../../include/QtCore/5.11.3/QtCore/private/../../../../../src/corelib/thread/qthread_p.h:307
#7  0x00007ffff689659b in QCoreApplication::sendEvent(QObject*, QEvent*) 
(event=0x7fff98003270, receiver=<optimized out>) at 
../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:234
#8  0x00007ffff689659b in QCoreApplicationPrivate::sendPostedEvents(QObject*, 
int, QThreadData*) (receiver=0x0, event_type=0, data=0x5555564348b0) at 
kernel/qcoreapplication.cpp:1744
#9  0x00007ffff68e5233 in postEventSourceDispatch(GSource*, GSourceFunc, 
gpointer) (s=0x7fffac003f10) at kernel/qeventdispatcher_glib.cpp:276
#10 0x00007ffff5557f2e in g_main_dispatch (context=0x7fffac000bf0) at 
../../../glib/gmain.c:3182
#11 0x00007ffff5557f2e in g_main_context_dispatch 
(context=context@entry=0x7fffac000bf0) at ../../../glib/gmain.c:3847
#12 0x00007ffff55581c8 in g_main_context_iterate 
(context=context@entry=0x7fffac000bf0, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:3920
#13 0x00007ffff555825c in g_main_context_iteration (context=0x7fffac000bf0, 
may_block=may_block@entry=1) at ../../../glib/gmain.c:3981
#14 0x00007ffff68e4863 in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) 
(this=0x7fffac000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#15 0x00007ffff689227b in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) 
(this=this@entry=0x7fffc19a1d60, flags=..., flags@entry=...) at 
../../include/QtCore/../../src/corelib/global/qflags.h:140
#16 0x00007ffff66e1ec6 in QThread::exec() (this=<optimized out>) at 
../../include/QtCore/../../src/corelib/global/qflags.h:120
#17 0x00007ffff66ebaa7 in QThreadPrivate::start(void*) (arg=0x555556434770) at 
thread/qthread_unix.cpp:367
#18 0x00007ffff660ffa3 in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#19 0x00007ffff621d82f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7fffc21a3700 (LWP 8162)):
#0  0x00007ffff661600c in futex_wait_cancelable (private=0, expected=0, 
futex_word=0x555555eec058) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ffff661600c in __pthread_cond_wait_common (abstime=0x0, 
mutex=0x555555eec008, cond=0x555555eec030) at pthread_cond_wait.c:502
#2  0x00007ffff661600c in __pthread_cond_wait (cond=0x555555eec030, 
mutex=0x555555eec008) at pthread_cond_wait.c:655
#3  0x00007fffc27aae63 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007fffc27aabb7 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007ffff660ffa3 in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#6  0x00007ffff621d82f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7fffd0ff9700 (LWP 8161)):
#0  0x00007ffff6212b69 in __GI___poll (fds=0x7fffbc002ab0, nfds=1, timeout=-1) 
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff5558136 in g_main_context_poll (priority=<optimized out>, 
n_fds=1, fds=0x7fffbc002ab0, timeout=<optimized out>, context=0x7fffbc000bf0) 
at ../../../glib/gmain.c:4221
#2  0x00007ffff5558136 in g_main_context_iterate 
(context=context@entry=0x7fffbc000bf0, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:3915
#3  0x00007ffff555825c in g_main_context_iteration (context=0x7fffbc000bf0, 
may_block=may_block@entry=1) at ../../../glib/gmain.c:3981
#4  0x00007ffff68e4863 in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) 
(this=0x7fffbc000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#5  0x00007ffff689227b in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) 
(this=this@entry=0x7fffd0ff8d60, flags=..., flags@entry=...) at 
../../include/QtCore/../../src/corelib/global/qflags.h:140
#6  0x00007ffff66e1ec6 in QThread::exec() (this=<optimized out>) at 
../../include/QtCore/../../src/corelib/global/qflags.h:120
#7  0x00007ffff66ebaa7 in QThreadPrivate::start(void*) (arg=0x555555ff3de0) at 
thread/qthread_unix.cpp:367
#8  0x00007ffff660ffa3 in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#9  0x00007ffff621d82f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7fffd17fa700 (LWP 8160)):
#0  0x00007ffff6212b69 in __GI___poll (fds=0x7fffc8003110, nfds=1, timeout=-1) 
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff5558136 in g_main_context_poll (priority=<optimized out>, 
n_fds=1, fds=0x7fffc8003110, timeout=<optimized out>, context=0x7fffc8000bf0) 
at ../../../glib/gmain.c:4221
#2  0x00007ffff5558136 in g_main_context_iterate 
(context=context@entry=0x7fffc8000bf0, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:3915
#3  0x00007ffff555825c in g_main_context_iteration (context=0x7fffc8000bf0, 
may_block=may_block@entry=1) at ../../../glib/gmain.c:3981
#4  0x00007ffff68e4863 in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) 
(this=0x7fffc8000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#5  0x00007ffff689227b in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) 
(this=this@entry=0x7fffd17f9d60, flags=..., flags@entry=...) at 
../../include/QtCore/../../src/corelib/global/qflags.h:140
#6  0x00007ffff66e1ec6 in QThread::exec() (this=<optimized out>) at 
../../include/QtCore/../../src/corelib/global/qflags.h:120
#7  0x00007ffff66ebaa7 in QThreadPrivate::start(void*) (arg=0x555555fb4750) at 
thread/qthread_unix.cpp:367
#8  0x00007ffff660ffa3 in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#9  0x00007ffff621d82f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7fffd1ffb700 (LWP 8159)):
#0  0x00007ffff6212b69 in __GI___poll (fds=0x7fffc4003110, nfds=1, timeout=-1) 
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff5558136 in g_main_context_poll (priority=<optimized out>, 
n_fds=1, fds=0x7fffc4003110, timeout=<optimized out>, context=0x7fffc4000bf0) 
at ../../../glib/gmain.c:4221
#2  0x00007ffff5558136 in g_main_context_iterate 
(context=context@entry=0x7fffc4000bf0, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:3915
#3  0x00007ffff555825c in g_main_context_iteration (context=0x7fffc4000bf0, 
may_block=may_block@entry=1) at ../../../glib/gmain.c:3981
#4  0x00007ffff68e4863 in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) 
(this=0x7fffc4000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#5  0x00007ffff689227b in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) 
(this=this@entry=0x7fffd1ffad60, flags=..., flags@entry=...) at 
../../include/QtCore/../../src/corelib/global/qflags.h:140
#6  0x00007ffff66e1ec6 in QThread::exec() (this=<optimized out>) at 
../../include/QtCore/../../src/corelib/global/qflags.h:120
#7  0x00007ffff66ebaa7 in QThreadPrivate::start(void*) (arg=0x5555560b17e0) at 
thread/qthread_unix.cpp:367
#8  0x00007ffff660ffa3 in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#9  0x00007ffff621d82f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fffd27fc700 (LWP 8158)):
#0  0x00007ffff661600c in futex_wait_cancelable (private=0, expected=0, 
futex_word=0x555556125710) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ffff661600c in __pthread_cond_wait_common (abstime=0x0, 
mutex=0x5555561256a8, cond=0x5555561256e8) at pthread_cond_wait.c:502
#2  0x00007ffff661600c in __pthread_cond_wait (cond=cond@entry=0x5555561256e8, 
mutex=0x5555561256a8) at pthread_cond_wait.c:655
#3  0x00007ffff7be14a8 in 
libtorrent::condition_variable::wait_impl<boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>
 >(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&) 
(this=this@entry=0x5555561256e8, l=...) at ../../src/thread.cpp:155
#4  0x00007ffff7be1465 in 
libtorrent::condition_variable::wait(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&)
 (this=this@entry=0x5555561256e8, l=...) at ../../src/thread.cpp:282
#5  0x00007ffff7a70b90 in libtorrent::disk_io_thread::thread_fun(int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work>) (this=0x555556124f90, 
thread_id=3, type=libtorrent::disk_io_thread::hasher_thread, w=...) at 
../../src/disk_io_thread.cpp:3371
#6  0x00007ffff7a722f1 in boost::_mfi::mf3<void, libtorrent::disk_io_thread, 
int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> 
>::operator()(libtorrent::disk_io_thread*, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work>) const (a3=..., a2=<optimized 
out>, a1=<optimized out>, p=<optimized out>, this=<optimized out>) at 
/usr/include/c++/8/bits/atomic_base.h:512
#7  0x00007ffff7a722f1 in 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_context::work> > 
>::operator()<boost::_mfi::mf3<void, libtorrent::disk_io_thread, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> >, 
boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf3<void, 
libtorrent::disk_io_thread, int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> >&, boost::_bi::list0&, int) 
(a=<synthetic pointer>..., f=..., this=<optimized out>) at 
/usr/include/boost/bind/bind.hpp:463
#8  0x00007ffff7a722f1 in boost::_bi::bind_t<void, boost::_mfi::mf3<void, 
libtorrent::disk_io_thread, int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> >, 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_context::work> > > 
>::operator()() (this=<optimized out>) at /usr/include/boost/bind/bind.hpp:1294
#9  0x00007ffff7a722f1 in 
boost::asio::detail::posix_thread::func<boost::_bi::bind_t<void, 
boost::_mfi::mf3<void, libtorrent::disk_io_thread, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> >, 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_context::work> > > > 
>::run() (this=<optimized out>) at 
/usr/include/boost/asio/detail/posix_thread.hpp:86
#10 0x00007ffff7a718ef in 
boost::asio::detail::boost_asio_detail_posix_thread_function(void*) 
(arg=0x7fffd8004d30) at /usr/include/boost/asio/detail/impl/posix_thread.ipp:74
#11 0x00007ffff660ffa3 in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#12 0x00007ffff621d82f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fffd2ffd700 (LWP 8157)):
#0  0x00007ffff661600c in futex_wait_cancelable (private=0, expected=0, 
futex_word=0x5555561256a4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ffff661600c in __pthread_cond_wait_common (abstime=0x0, 
mutex=0x5555561256a8, cond=0x555556125678) at pthread_cond_wait.c:502
#2  0x00007ffff661600c in __pthread_cond_wait (cond=cond@entry=0x555556125678, 
mutex=0x5555561256a8) at pthread_cond_wait.c:655
#3  0x00007ffff7be14a8 in 
libtorrent::condition_variable::wait_impl<boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>
 >(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&) 
(this=this@entry=0x555556125678, l=...) at ../../src/thread.cpp:155
#4  0x00007ffff7be1465 in 
libtorrent::condition_variable::wait(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&)
 (this=this@entry=0x555556125678, l=...) at ../../src/thread.cpp:282
#5  0x00007ffff7a70af7 in libtorrent::disk_io_thread::thread_fun(int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work>) (this=0x555556124f90, 
thread_id=2, type=libtorrent::disk_io_thread::generic_thread, w=...) at 
../../src/disk_io_thread.cpp:3354
#6  0x00007ffff7a722f1 in boost::_mfi::mf3<void, libtorrent::disk_io_thread, 
int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> 
>::operator()(libtorrent::disk_io_thread*, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work>) const (a3=..., a2=<optimized 
out>, a1=<optimized out>, p=<optimized out>, this=<optimized out>) at 
/usr/include/c++/8/bits/atomic_base.h:512
#7  0x00007ffff7a722f1 in 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_context::work> > 
>::operator()<boost::_mfi::mf3<void, libtorrent::disk_io_thread, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> >, 
boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf3<void, 
libtorrent::disk_io_thread, int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> >&, boost::_bi::list0&, int) 
(a=<synthetic pointer>..., f=..., this=<optimized out>) at 
/usr/include/boost/bind/bind.hpp:463
#8  0x00007ffff7a722f1 in boost::_bi::bind_t<void, boost::_mfi::mf3<void, 
libtorrent::disk_io_thread, int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> >, 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_context::work> > > 
>::operator()() (this=<optimized out>) at /usr/include/boost/bind/bind.hpp:1294
#9  0x00007ffff7a722f1 in 
boost::asio::detail::posix_thread::func<boost::_bi::bind_t<void, 
boost::_mfi::mf3<void, libtorrent::disk_io_thread, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> >, 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_context::work> > > > 
>::run() (this=<optimized out>) at 
/usr/include/boost/asio/detail/posix_thread.hpp:86
#10 0x00007ffff7a718ef in 
boost::asio::detail::boost_asio_detail_posix_thread_function(void*) 
(arg=0x7fffd8004ad0) at /usr/include/boost/asio/detail/impl/posix_thread.ipp:74
#11 0x00007ffff660ffa3 in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#12 0x00007ffff621d82f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fffd37fe700 (LWP 8156)):
#0  0x00007ffff661600c in futex_wait_cancelable (private=0, expected=0, 
futex_word=0x5555561256a4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ffff661600c in __pthread_cond_wait_common (abstime=0x0, 
mutex=0x5555561256a8, cond=0x555556125678) at pthread_cond_wait.c:502
#2  0x00007ffff661600c in __pthread_cond_wait (cond=cond@entry=0x555556125678, 
mutex=0x5555561256a8) at pthread_cond_wait.c:655
#3  0x00007ffff7be14a8 in 
libtorrent::condition_variable::wait_impl<boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>
 >(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&) 
(this=this@entry=0x555556125678, l=...) at ../../src/thread.cpp:155
#4  0x00007ffff7be1465 in 
libtorrent::condition_variable::wait(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&)
 (this=this@entry=0x555556125678, l=...) at ../../src/thread.cpp:282
#5  0x00007ffff7a70af7 in libtorrent::disk_io_thread::thread_fun(int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work>) (this=0x555556124f90, 
thread_id=1, type=libtorrent::disk_io_thread::generic_thread, w=...) at 
../../src/disk_io_thread.cpp:3354
#6  0x00007ffff7a722f1 in boost::_mfi::mf3<void, libtorrent::disk_io_thread, 
int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> 
>::operator()(libtorrent::disk_io_thread*, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work>) const (a3=..., a2=<optimized 
out>, a1=<optimized out>, p=<optimized out>, this=<optimized out>) at 
/usr/include/c++/8/bits/atomic_base.h:512
#7  0x00007ffff7a722f1 in 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_context::work> > 
>::operator()<boost::_mfi::mf3<void, libtorrent::disk_io_thread, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> >, 
boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf3<void, 
libtorrent::disk_io_thread, int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> >&, boost::_bi::list0&, int) 
(a=<synthetic pointer>..., f=..., this=<optimized out>) at 
/usr/include/boost/bind/bind.hpp:463
#8  0x00007ffff7a722f1 in boost::_bi::bind_t<void, boost::_mfi::mf3<void, 
libtorrent::disk_io_thread, int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> >, 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_context::work> > > 
>::operator()() (this=<optimized out>) at /usr/include/boost/bind/bind.hpp:1294
#9  0x00007ffff7a722f1 in 
boost::asio::detail::posix_thread::func<boost::_bi::bind_t<void, 
boost::_mfi::mf3<void, libtorrent::disk_io_thread, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> >, 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_context::work> > > > 
>::run() (this=<optimized out>) at 
/usr/include/boost/asio/detail/posix_thread.hpp:86
#10 0x00007ffff7a718ef in 
boost::asio::detail::boost_asio_detail_posix_thread_function(void*) 
(arg=0x7fffd8001da0) at /usr/include/boost/asio/detail/impl/posix_thread.ipp:74
#11 0x00007ffff660ffa3 in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#12 0x00007ffff621d82f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fffd3fff700 (LWP 8155)):
#0  0x00007ffff661600c in futex_wait_cancelable (private=0, expected=0, 
futex_word=0x5555561256a4) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ffff661600c in __pthread_cond_wait_common (abstime=0x0, 
mutex=0x5555561256a8, cond=0x555556125678) at pthread_cond_wait.c:502
#2  0x00007ffff661600c in __pthread_cond_wait (cond=cond@entry=0x555556125678, 
mutex=0x5555561256a8) at pthread_cond_wait.c:655
#3  0x00007ffff7be14a8 in 
libtorrent::condition_variable::wait_impl<boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>
 >(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&) 
(this=this@entry=0x555556125678, l=...) at ../../src/thread.cpp:155
#4  0x00007ffff7be1465 in 
libtorrent::condition_variable::wait(boost::asio::detail::scoped_lock<boost::asio::detail::posix_mutex>&)
 (this=this@entry=0x555556125678, l=...) at ../../src/thread.cpp:282
#5  0x00007ffff7a70af7 in libtorrent::disk_io_thread::thread_fun(int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work>) (this=0x555556124f90, 
thread_id=0, type=libtorrent::disk_io_thread::generic_thread, w=...) at 
../../src/disk_io_thread.cpp:3354
#6  0x00007ffff7a722f1 in boost::_mfi::mf3<void, libtorrent::disk_io_thread, 
int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> 
>::operator()(libtorrent::disk_io_thread*, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work>) const (a3=..., a2=<optimized 
out>, a1=<optimized out>, p=<optimized out>, this=<optimized out>) at 
/usr/include/c++/8/bits/atomic_base.h:512
#7  0x00007ffff7a722f1 in 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_context::work> > 
>::operator()<boost::_mfi::mf3<void, libtorrent::disk_io_thread, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> >, 
boost::_bi::list0>(boost::_bi::type<void>, boost::_mfi::mf3<void, 
libtorrent::disk_io_thread, int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> >&, boost::_bi::list0&, int) 
(a=<synthetic pointer>..., f=..., this=<optimized out>) at 
/usr/include/boost/bind/bind.hpp:463
#8  0x00007ffff7a722f1 in boost::_bi::bind_t<void, boost::_mfi::mf3<void, 
libtorrent::disk_io_thread, int, libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> >, 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_context::work> > > 
>::operator()() (this=<optimized out>) at /usr/include/boost/bind/bind.hpp:1294
#9  0x00007ffff7a722f1 in 
boost::asio::detail::posix_thread::func<boost::_bi::bind_t<void, 
boost::_mfi::mf3<void, libtorrent::disk_io_thread, int, 
libtorrent::disk_io_thread::thread_type_t, 
boost::shared_ptr<boost::asio::io_context::work> >, 
boost::_bi::list4<boost::_bi::value<libtorrent::disk_io_thread*>, 
boost::_bi::value<int>, 
boost::_bi::value<libtorrent::disk_io_thread::thread_type_t>, 
boost::_bi::value<boost::shared_ptr<boost::asio::io_context::work> > > > 
>::run() (this=<optimized out>) at 
/usr/include/boost/asio/detail/posix_thread.hpp:86
#10 0x00007ffff7a718ef in 
boost::asio::detail::boost_asio_detail_posix_thread_function(void*) 
(arg=0x555555f4e120) at /usr/include/boost/asio/detail/impl/posix_thread.ipp:74
#11 0x00007ffff660ffa3 in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#12 0x00007ffff621d82f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fffe8ea8700 (LWP 8154)):
#0  0x00007ffff661600c in futex_wait_cancelable (private=0, expected=0, 
futex_word=0x555555f1b03c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ffff661600c in __pthread_cond_wait_common (abstime=0x0, 
mutex=0x555555f1afd8, cond=0x555555f1b010) at pthread_cond_wait.c:502
#2  0x00007ffff661600c in __pthread_cond_wait (cond=cond@entry=0x555555f1b010, 
mutex=0x555555f1afd8) at pthread_cond_wait.c:655
#3  0x00007ffff7a8facc in 
boost::asio::detail::posix_event::wait<boost::asio::detail::conditionally_enabled_mutex::scoped_lock>(boost::asio::detail::conditionally_enabled_mutex::scoped_lock&)
 (lock=..., this=<optimized out>) at 
/usr/include/boost/asio/detail/conditionally_enabled_mutex.hpp:98
#4  0x00007ffff7a8facc in 
boost::asio::detail::conditionally_enabled_event::wait(boost::asio::detail::conditionally_enabled_mutex::scoped_lock&)
 (lock=..., this=0x555555f1b008) at 
/usr/include/boost/asio/detail/conditionally_enabled_event.hpp:89
#5  0x00007ffff7a8facc in 
boost::asio::detail::scheduler::do_run_one(boost::asio::detail::conditionally_enabled_mutex::scoped_lock&,
 boost::asio::detail::scheduler_thread_info&, boost::system::error_code const&) 
(ec=..., this_thread=..., lock=..., this=0x555555f1afa0) at 
/usr/include/boost/asio/detail/impl/scheduler.ipp:409
#6  0x00007ffff7a8facc in 
boost::asio::detail::scheduler::run(boost::system::error_code&) 
(this=0x555555f1afa0, ec=...) at 
/usr/include/boost/asio/detail/impl/scheduler.ipp:154
#7  0x00007ffff7a9281a in boost::asio::io_context::run() (this=0x555555f4dd90) 
at /usr/include/boost/asio/impl/io_context.ipp:62
#8  0x00007ffff7a9281a in 
boost::asio::detail::resolver_service_base::work_io_context_runner::operator()()
 (this=<optimized out>) at 
/usr/include/boost/asio/detail/impl/resolver_service_base.ipp:32
#9  0x00007ffff7a9281a in 
boost::asio::detail::posix_thread::func<boost::asio::detail::resolver_service_base::work_io_context_runner>::run()
 (this=<optimized out>) at /usr/include/boost/asio/detail/posix_thread.hpp:86
#10 0x00007ffff7a718ef in 
boost::asio::detail::boost_asio_detail_posix_thread_function(void*) 
(arg=0x7fffd80011f0) at /usr/include/boost/asio/detail/impl/posix_thread.ipp:74
#11 0x00007ffff660ffa3 in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#12 0x00007ffff621d82f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fffe96a9700 (LWP 8153)):
#0  0x00007ffff621db4f in epoll_wait (epfd=22, 
events=events@entry=0x7fffe96a8620, maxevents=maxevents@entry=128, timeout=-1) 
at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x00007ffff7a8df17 in boost::asio::detail::epoll_reactor::run(long, 
boost::asio::detail::op_queue<boost::asio::detail::scheduler_operation>&) 
(this=0x555555f584d0, usec=<optimized out>, ops=...) at 
/usr/include/boost/asio/detail/impl/epoll_reactor.ipp:471
#2  0x00007ffff7a8f9ba in 
boost::asio::detail::scheduler::do_run_one(boost::asio::detail::conditionally_enabled_mutex::scoped_lock&,
 boost::asio::detail::scheduler_thread_info&, boost::system::error_code const&) 
(ec=..., this_thread=..., lock=..., this=0x555556040b00) at 
/usr/include/boost/asio/detail/impl/scheduler.ipp:385
#3  0x00007ffff7a8f9ba in 
boost::asio::detail::scheduler::run(boost::system::error_code&) 
(this=0x555556040b00, ec=...) at 
/usr/include/boost/asio/detail/impl/scheduler.ipp:154
#4  0x00007ffff7b5cda8 in boost::asio::io_context::run() (this=0x5555560ebb10) 
at /usr/include/boost/asio/impl/io_context.ipp:62
#5  0x00007ffff7a718ef in 
boost::asio::detail::boost_asio_detail_posix_thread_function(void*) 
(arg=0x555555f4e1a0) at /usr/include/boost/asio/detail/impl/posix_thread.ipp:74
#6  0x00007ffff660ffa3 in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#7  0x00007ffff621d82f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fffe9ee9700 (LWP 8152)):
#0  0x00007ffff6212b69 in __GI___poll (fds=0x7fffd401bf40, nfds=4, timeout=-1) 
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff5558136 in g_main_context_poll (priority=<optimized out>, 
n_fds=4, fds=0x7fffd401bf40, timeout=<optimized out>, context=0x7fffd4000bf0) 
at ../../../glib/gmain.c:4221
#2  0x00007ffff5558136 in g_main_context_iterate 
(context=context@entry=0x7fffd4000bf0, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:3915
#3  0x00007ffff555825c in g_main_context_iteration (context=0x7fffd4000bf0, 
may_block=may_block@entry=1) at ../../../glib/gmain.c:3981
#4  0x00007ffff68e4863 in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) 
(this=0x7fffd4000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#5  0x00007ffff689227b in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) 
(this=this@entry=0x7fffe9ee8d30, flags=..., flags@entry=...) at 
../../include/QtCore/../../src/corelib/global/qflags.h:140
#6  0x00007ffff66e1ec6 in QThread::exec() (this=this@entry=0x7ffff6d9cd60 
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at 
../../include/QtCore/../../src/corelib/global/qflags.h:120
#7  0x00007ffff6d1c545 in QDBusConnectionManager::run() (this=0x7ffff6d9cd60 
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at 
qdbusconnection.cpp:178
#8  0x00007ffff66ebaa7 in QThreadPrivate::start(void*) (arg=0x7ffff6d9cd60 
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at 
thread/qthread_unix.cpp:367
#9  0x00007ffff660ffa3 in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#10 0x00007ffff621d82f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fffea724700 (LWP 8151)):
#0  0x00007ffff6212b69 in __GI___poll (fds=0x7fffe0002ce0, nfds=1, 
timeout=9993) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff5558136 in g_main_context_poll (priority=<optimized out>, 
n_fds=1, fds=0x7fffe0002ce0, timeout=<optimized out>, context=0x7fffe0000bf0) 
at ../../../glib/gmain.c:4221
#2  0x00007ffff5558136 in g_main_context_iterate 
(context=context@entry=0x7fffe0000bf0, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:3915
#3  0x00007ffff555825c in g_main_context_iteration (context=0x7fffe0000bf0, 
may_block=may_block@entry=1) at ../../../glib/gmain.c:3981
#4  0x00007ffff68e4863 in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) 
(this=0x7fffe0000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#5  0x00007ffff689227b in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) 
(this=this@entry=0x7fffea723d60, flags=..., flags@entry=...) at 
../../include/QtCore/../../src/corelib/global/qflags.h:140
#6  0x00007ffff66e1ec6 in QThread::exec() (this=<optimized out>) at 
../../include/QtCore/../../src/corelib/global/qflags.h:120
#7  0x00007ffff66ebaa7 in QThreadPrivate::start(void*) (arg=0x55555604aa90) at 
thread/qthread_unix.cpp:367
#8  0x00007ffff660ffa3 in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#9  0x00007ffff621d82f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fffeaf87700 (LWP 8150)):
#0  0x00007ffff6212b69 in __GI___poll (fds=0x555555ed45f0, nfds=2, timeout=-1) 
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff5558136 in g_main_context_poll (priority=<optimized out>, 
n_fds=2, fds=0x555555ed45f0, timeout=<optimized out>, context=0x555555ed2900) 
at ../../../glib/gmain.c:4221
#2  0x00007ffff5558136 in g_main_context_iterate (context=0x555555ed2900, 
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at 
../../../glib/gmain.c:3915
#3  0x00007ffff55584c2 in g_main_loop_run (loop=0x555555ed2a40) at 
../../../glib/gmain.c:4116
#4  0x00007ffff01daf66 in gdbus_shared_thread_func (user_data=0x555555ed28d0) 
at ../../../gio/gdbusprivate.c:275
#5  0x00007ffff5580425 in g_thread_proxy (data=0x555555e964f0) at 
../../../glib/gthread.c:784
#6  0x00007ffff660ffa3 in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#7  0x00007ffff621d82f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fffeb788700 (LWP 8149)):
#0  0x00007ffff6212b69 in __GI___poll (fds=0x555555ec2330, nfds=1, timeout=-1) 
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff5558136 in g_main_context_poll (priority=<optimized out>, 
n_fds=1, fds=0x555555ec2330, timeout=<optimized out>, context=0x555555ec2020) 
at ../../../glib/gmain.c:4221
#2  0x00007ffff5558136 in g_main_context_iterate 
(context=context@entry=0x555555ec2020, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:3915
#3  0x00007ffff555825c in g_main_context_iteration (context=0x555555ec2020, 
may_block=may_block@entry=1) at ../../../glib/gmain.c:3981
#4  0x00007ffff55582a1 in glib_worker_main (data=<optimized out>) at 
../../../glib/gmain.c:5861
#5  0x00007ffff5580425 in g_thread_proxy (data=0x555555e96450) at 
../../../glib/gthread.c:784
#6  0x00007ffff660ffa3 in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#7  0x00007ffff621d82f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7ffff1ae6700 (LWP 7807)):
#0  0x00007ffff6212b69 in __GI___poll (fds=fds@entry=0x7ffff1ae5c78, 
nfds=nfds@entry=1, timeout=timeout@entry=-1) at 
../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff334fcf7 in poll (__timeout=-1, __nfds=1, __fds=0x7ffff1ae5c78) 
at /usr/include/x86_64-linux-gnu/bits/poll2.h:46
#2  0x00007ffff334fcf7 in _xcb_conn_wait (c=c@entry=0x555555dcd8d0, 
cond=cond@entry=0x555555dcd910, vector=vector@entry=0x0, count=count@entry=0x0) 
at ../../src/xcb_conn.c:479
#3  0x00007ffff335191a in xcb_wait_for_event (c=0x555555dcd8d0) at 
../../src/xcb_in.c:697
#4  0x00007ffff2aa0d79 in QXcbEventReader::run() (this=0x555555dd8050) at 
qxcbconnection.h:409
#5  0x00007ffff66ebaa7 in QThreadPrivate::start(void*) (arg=0x555555dd8050) at 
thread/qthread_unix.cpp:367
#6  0x00007ffff660ffa3 in start_thread (arg=<optimized out>) at 
pthread_create.c:486
#7  0x00007ffff621d82f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7ffff2ef3840 (LWP 7802)):
#0  0x00007ffff6212b69 in __GI___poll (fds=0x55555796fbf0, nfds=6, 
timeout=1000) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ffff5558136 in g_main_context_poll (priority=<optimized out>, 
n_fds=6, fds=0x55555796fbf0, timeout=<optimized out>, context=0x7fffec004ff0) 
at ../../../glib/gmain.c:4221
#2  0x00007ffff5558136 in g_main_context_iterate 
(context=context@entry=0x7fffec004ff0, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:3915
#3  0x00007ffff555825c in g_main_context_iteration (context=0x7fffec004ff0, 
may_block=may_block@entry=1) at ../../../glib/gmain.c:3981
#4  0x00007ffff68e4863 in 
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) 
(this=0x555555f814e0, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#5  0x00007ffff2b373e1 in 
QPAEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) 
(this=0x555555f814e0, flags=...) at qeventdispatcher_glib.cpp:69
#6  0x00007ffff689227b in 
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) 
(this=this@entry=0x7fffffffdf20, flags=..., flags@entry=...) at 
../../include/QtCore/../../src/corelib/global/qflags.h:140
#7  0x00007ffff689a262 in QCoreApplication::exec() () at 
../../include/QtCore/../../src/corelib/global/qflags.h:120
#8  0x000055555568cfb0 in Application::exec(QStringList const&) 
(this=this@entry=0x555555db9780, params=...) at 
../../src/app/application.cpp:567
#9  0x000055555567c163 in main(int, char**) (argc=<optimized out>, 
argv=<optimized out>) at ../../src/app/main.cpp:25

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