https://bugs.kde.org/show_bug.cgi?id=425680

--- Comment #4 from Patrick Silva <bugsefor...@gmx.com> ---
even better backtrace:

Application: Discover (plasma-discover), signal: Segmentation fault
Content of s_kcrashErrorMessage: [Current thread is 1 (Thread 0x7f9885d6ae40
(LWP 7622))]
[New LWP 7624]
[New LWP 7625]
[New LWP 7626]
[New LWP 7627]
[New LWP 7628]
[New LWP 7629]
[New LWP 7630]
[New LWP 7631]
[New LWP 7634]
[New LWP 7635]
[New LWP 7636]
[New LWP 7637]
[New LWP 7642]
[New LWP 7654]
[New LWP 7684]
[New LWP 7724]
[New LWP 7725]
[New LWP 7726]
[New LWP 7731]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
0x00007f988a334aff in __GI___poll (fds=fds@entry=0x7fffaa90fee8,
nfds=nfds@entry=1, timeout=timeout@entry=1000) at
../sysdeps/unix/sysv/linux/poll.c:29

Thread 20 (Thread 0x7f982e21b700 (LWP 7731)):
#0  0x00007f988a3301c0 in __GI___libc_read (nbytes=16, buf=0x7f982e21a9d0,
fd=<optimized out>) at ../sysdeps/unix/sysv/linux/read.c:26
#1  __GI___libc_read (fd=<optimized out>, buf=buf@entry=0x7f982e21a9d0,
nbytes=nbytes@entry=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f9888cf089f in read (__nbytes=16, __buf=0x7f982e21a9d0,
__fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#3  g_wakeup_acknowledge (wakeup=0x7f98559a3010) at ../../../glib/gwakeup.c:210
#4  0x00007f9888ca7cde in g_main_context_check
(context=context@entry=0x7f98000058e0, max_priority=2147483647,
fds=fds@entry=0x7f9800021530, n_fds=n_fds@entry=1) at
../../../glib/gmain.c:3825
#5  0x00007f9888ca8132 in g_main_context_iterate
(context=context@entry=0x7f98000058e0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4044
#6  0x00007f9888ca82c3 in g_main_context_iteration (context=0x7f98000058e0,
may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#7  0x00007f988a8fffbb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f9800007640, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#8  0x00007f988a8a41ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f982e21abe0, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:141
#9  0x00007f988a6bea12 in QThread::exec() (this=this@entry=0x55c4db588e30) at
../../include/QtCore/../../src/corelib/global/qflags.h:121
#10 0x00007f988c41b38a in QQuickPixmapReader::run() (this=0x55c4db588e30) at
util/qquickpixmapcache.cpp:1024
#11 0x00007f988a6bfbac in QThreadPrivate::start(void*) (arg=0x55c4db588e30) at
thread/qthread_unix.cpp:329
#12 0x00007f9889655609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#13 0x00007f988a341293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f982da1a700 (LWP 7726)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f982da19b90, clockid=<optimized out>, expected=0,
futex_word=0x55c4dab5b644) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f982da19b90, clockid=<optimized
out>, mutex=0x55c4dab5b5f0, cond=0x55c4dab5b618) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x55c4dab5b618, mutex=0x55c4dab5b5f0,
abstime=0x7f982da19b90) at pthread_cond_wait.c:656
#3  0x00007f988a6c5ca8 in QWaitConditionPrivate::wait_relative(QDeadlineTimer)
(this=0x55c4dab5b5f0, deadline=...) at thread/qwaitcondition_unix.cpp:136
#4  QWaitConditionPrivate::wait(QDeadlineTimer) (deadline=...,
this=0x55c4dab5b5f0) at thread/qwaitcondition_unix.cpp:144
#5  QWaitCondition::wait(QMutex*, QDeadlineTimer)
(this=this@entry=0x55c4dadb5f80, mutex=mutex@entry=0x55c4d698d718,
deadline=...) at thread/qwaitcondition_unix.cpp:225
#6  0x00007f988a6c31b1 in QThreadPoolThread::run() (this=0x55c4dadb5f70) at
../../include/QtCore/../../src/corelib/thread/qmutex.h:270
#7  0x00007f988a6bfbac in QThreadPrivate::start(void*) (arg=0x55c4dadb5f70) at
thread/qthread_unix.cpp:329
#8  0x00007f9889655609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#9  0x00007f988a341293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f981d9a4700 (LWP 7725)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f981d9a3b90, clockid=<optimized out>, expected=0,
futex_word=0x55c4dabed644) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f981d9a3b90, clockid=<optimized
out>, mutex=0x55c4dabed5f0, cond=0x55c4dabed618) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x55c4dabed618, mutex=0x55c4dabed5f0,
abstime=0x7f981d9a3b90) at pthread_cond_wait.c:656
#3  0x00007f988a6c5ca8 in QWaitConditionPrivate::wait_relative(QDeadlineTimer)
(this=0x55c4dabed5f0, deadline=...) at thread/qwaitcondition_unix.cpp:136
#4  QWaitConditionPrivate::wait(QDeadlineTimer) (deadline=...,
this=0x55c4dabed5f0) at thread/qwaitcondition_unix.cpp:144
#5  QWaitCondition::wait(QMutex*, QDeadlineTimer)
(this=this@entry=0x55c4daf0b2b0, mutex=mutex@entry=0x55c4d698d718,
deadline=...) at thread/qwaitcondition_unix.cpp:225
#6  0x00007f988a6c31b1 in QThreadPoolThread::run() (this=0x55c4daf0b2a0) at
../../include/QtCore/../../src/corelib/thread/qmutex.h:270
#7  0x00007f988a6bfbac in QThreadPrivate::start(void*) (arg=0x55c4daf0b2a0) at
thread/qthread_unix.cpp:329
#8  0x00007f9889655609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#9  0x00007f988a341293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f982ea39700 (LWP 7724)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f982ea38b90, clockid=<optimized out>, expected=0,
futex_word=0x55c4dac3cce4) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f982ea38b90, clockid=<optimized
out>, mutex=0x55c4dac3cc90, cond=0x55c4dac3ccb8) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x55c4dac3ccb8, mutex=0x55c4dac3cc90,
abstime=0x7f982ea38b90) at pthread_cond_wait.c:656
#3  0x00007f988a6c5ca8 in QWaitConditionPrivate::wait_relative(QDeadlineTimer)
(this=0x55c4dac3cc90, deadline=...) at thread/qwaitcondition_unix.cpp:136
#4  QWaitConditionPrivate::wait(QDeadlineTimer) (deadline=...,
this=0x55c4dac3cc90) at thread/qwaitcondition_unix.cpp:144
#5  QWaitCondition::wait(QMutex*, QDeadlineTimer)
(this=this@entry=0x55c4daaf2320, mutex=mutex@entry=0x55c4d698d718,
deadline=...) at thread/qwaitcondition_unix.cpp:225
#6  0x00007f988a6c31b1 in QThreadPoolThread::run() (this=0x55c4daaf2310) at
../../include/QtCore/../../src/corelib/thread/qmutex.h:270
#7  0x00007f988a6bfbac in QThreadPrivate::start(void*) (arg=0x55c4daaf2310) at
thread/qthread_unix.cpp:329
#8  0x00007f9889655609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#9  0x00007f988a341293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f982d219700 (LWP 7684)):
#0  0x00007f9888cf524d in g_mutex_lock (mutex=mutex@entry=0x7f9818a20270) at
../../../glib/gthread-posix.c:1481
#1  0x00007f9888ca7d4a in g_main_context_dispatch
(context=context@entry=0x7f9818a20270) at ../../../glib/gmain.c:3968
#2  0x00007f9888ca8220 in g_main_context_iterate
(context=context@entry=0x7f9818a20270, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4047
#3  0x00007f9888ca82c3 in g_main_context_iteration
(context=context@entry=0x7f9818a20270, may_block=may_block@entry=1) at
../../../glib/gmain.c:4108
#4  0x00007f982c97199d in dconf_gdbus_worker_thread (user_data=0x7f9818a20270)
at ../gdbus/dconf-gdbus-thread.c:82
#5  0x00007f9888cd1911 in g_thread_proxy (data=0x7f9855a68c00) at
../../../glib/gthread.c:807
#6  0x00007f9889655609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f988a341293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f981e1a5700 (LWP 7654)):
#0  0x00007f988a334aff in __GI___poll (fds=0x7f980c00dc90, nfds=1,
timeout=86940) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f9888ca818e in g_main_context_poll (priority=<optimized out>,
n_fds=1, fds=0x7f980c00dc90, timeout=<optimized out>, context=0x7f980c000c20)
at ../../../glib/gmain.c:4346
#2  g_main_context_iterate (context=context@entry=0x7f980c000c20,
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at
../../../glib/gmain.c:4042
#3  0x00007f9888ca82c3 in g_main_context_iteration (context=0x7f980c000c20,
may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#4  0x00007f988a8fffbb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f980c000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f988a8a41ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f981e1a4c20, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:141
#6  0x00007f988a6bea12 in QThread::exec() (this=<optimized out>) at
../../include/QtCore/../../src/corelib/global/qflags.h:121
#7  0x00007f988a6bfbac in QThreadPrivate::start(void*) (arg=0x55c4da401240) at
thread/qthread_unix.cpp:329
#8  0x00007f9889655609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#9  0x00007f988a341293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f981ffff700 (LWP 7642)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x55c4d5796780) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55c4d5796730,
cond=0x55c4d5796758) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55c4d5796758, mutex=0x55c4d5796730) at
pthread_cond_wait.c:638
#3  0x00007f988a6c5d1b in QWaitConditionPrivate::wait(QDeadlineTimer)
(deadline=..., this=0x55c4d5796730) at thread/qwaitcondition_unix.cpp:146
#4  QWaitCondition::wait(QMutex*, QDeadlineTimer)
(this=this@entry=0x55c4d57965b8, mutex=mutex@entry=0x55c4d57965b0,
deadline=...) at thread/qwaitcondition_unix.cpp:225
#5  0x00007f988c4e0814 in QSGRenderThreadEventQueue::takeEvent(bool)
(wait=true, this=0x55c4d57965a8) at
/usr/include/x86_64-linux-gnu/qt5/QtCore/qdeadlinetimer.h:68
#6  QSGRenderThread::processEventsAndWaitForMore()
(this=this@entry=0x55c4d5796510) at scenegraph/qsgthreadedrenderloop.cpp:936
#7  0x00007f988c4e0c89 in QSGRenderThread::run() (this=0x55c4d5796510) at
scenegraph/qsgthreadedrenderloop.cpp:1053
#8  0x00007f988a6bfbac in QThreadPrivate::start(void*) (arg=0x55c4d5796510) at
thread/qthread_unix.cpp:329
#9  0x00007f9889655609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#10 0x00007f988a341293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f9860b09700 (LWP 7637)):
#0  0x00007f988a334aff in __GI___poll (fds=0x7f98441120c0, nfds=1,
timeout=86940) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f9888ca818e in g_main_context_poll (priority=<optimized out>,
n_fds=1, fds=0x7f98441120c0, timeout=<optimized out>, context=0x7f9844000c20)
at ../../../glib/gmain.c:4346
#2  g_main_context_iterate (context=context@entry=0x7f9844000c20,
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at
../../../glib/gmain.c:4042
#3  0x00007f9888ca82c3 in g_main_context_iteration (context=0x7f9844000c20,
may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#4  0x00007f988a8fffbb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f9844000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f988a8a41ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f9860b08c20, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:141
#6  0x00007f988a6bea12 in QThread::exec() (this=<optimized out>) at
../../include/QtCore/../../src/corelib/global/qflags.h:121
#7  0x00007f988a6bfbac in QThreadPrivate::start(void*) (arg=0x55c4d6b56070) at
thread/qthread_unix.cpp:329
#8  0x00007f9889655609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#9  0x00007f988a341293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f9861699700 (LWP 7636)):
#0  __libc_disable_asynccancel () at
../sysdeps/unix/sysv/linux/x86_64/cancellation.S:87
#1  0x00007f988a330191 in __GI___libc_read (nbytes=16, buf=0x7f9861698b50,
fd=<optimized out>) at ../sysdeps/unix/sysv/linux/read.c:26
#2  __GI___libc_read (fd=<optimized out>, buf=buf@entry=0x7f9861698b50,
nbytes=nbytes@entry=16) at ../sysdeps/unix/sysv/linux/read.c:24
#3  0x00007f9888cf089f in read (__nbytes=16, __buf=0x7f9861698b50,
__fd=<optimized out>) at /usr/include/x86_64-linux-gnu/bits/unistd.h:44
#4  g_wakeup_acknowledge (wakeup=0x55c4d69ce110) at ../../../glib/gwakeup.c:210
#5  0x00007f9888ca7cde in g_main_context_check
(context=context@entry=0x55c4d6afe700, max_priority=2147483647,
fds=fds@entry=0x55c4d69d05e0, n_fds=n_fds@entry=1) at
../../../glib/gmain.c:3825
#6  0x00007f9888ca8132 in g_main_context_iterate (context=0x55c4d6afe700,
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at
../../../glib/gmain.c:4044
#7  0x00007f9888ca8513 in g_main_loop_run (loop=0x55c4d54dfd00) at
../../../glib/gmain.c:4241
#8  0x00007f9888865eda in gdbus_shared_thread_func (user_data=0x55c4d6afe6d0)
at ../../../gio/gdbusprivate.c:279
#9  0x00007f9888cd1911 in g_thread_proxy (data=0x55c4d6afc5e0) at
../../../glib/gthread.c:807
#10 0x00007f9889655609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#11 0x00007f988a341293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f9861e9a700 (LWP 7635)):
#0  0x00007f988a334aff in __GI___poll (fds=0x55c4d54de0f0, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f9888ca818e in g_main_context_poll (priority=<optimized out>,
n_fds=1, fds=0x55c4d54de0f0, timeout=<optimized out>, context=0x55c4d4e9a400)
at ../../../glib/gmain.c:4346
#2  g_main_context_iterate (context=context@entry=0x55c4d4e9a400,
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at
../../../glib/gmain.c:4042
#3  0x00007f9888ca82c3 in g_main_context_iteration (context=0x55c4d4e9a400,
may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#4  0x00007f9888ca8311 in glib_worker_main (data=<optimized out>) at
../../../glib/gmain.c:5996
#5  0x00007f9888cd1911 in g_thread_proxy (data=0x55c4d69cc700) at
../../../glib/gthread.c:807
#6  0x00007f9889655609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#7  0x00007f988a341293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f9862714700 (LWP 7634)):
#0  0x00007f988a334aff in __GI___poll (fds=0x7f9848003e10, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f9888ca818e in g_main_context_poll (priority=<optimized out>,
n_fds=1, fds=0x7f9848003e10, timeout=<optimized out>, context=0x7f9848000c20)
at ../../../glib/gmain.c:4346
#2  g_main_context_iterate (context=context@entry=0x7f9848000c20,
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at
../../../glib/gmain.c:4042
#3  0x00007f9888ca82c3 in g_main_context_iteration (context=0x7f9848000c20,
may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#4  0x00007f988a8fffbb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f9848000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f988a8a41ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f9862713c20, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:141
#6  0x00007f988a6bea12 in QThread::exec() (this=<optimized out>) at
../../include/QtCore/../../src/corelib/global/qflags.h:121
#7  0x00007f988a6bfbac in QThreadPrivate::start(void*) (arg=0x55c4d8172080) at
thread/qthread_unix.cpp:329
#8  0x00007f9889655609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#9  0x00007f988a341293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f9863fff700 (LWP 7631)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f9863ffeb90, clockid=<optimized out>, expected=0,
futex_word=0x55c4d698f684) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f9863ffeb90, clockid=<optimized
out>, mutex=0x55c4d698f630, cond=0x55c4d698f658) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x55c4d698f658, mutex=0x55c4d698f630,
abstime=0x7f9863ffeb90) at pthread_cond_wait.c:656
#3  0x00007f988a6c5ca8 in QWaitConditionPrivate::wait_relative(QDeadlineTimer)
(this=0x55c4d698f630, deadline=...) at thread/qwaitcondition_unix.cpp:136
#4  QWaitConditionPrivate::wait(QDeadlineTimer) (deadline=...,
this=0x55c4d698f630) at thread/qwaitcondition_unix.cpp:144
#5  QWaitCondition::wait(QMutex*, QDeadlineTimer)
(this=this@entry=0x55c4d6988710, mutex=mutex@entry=0x55c4d698cfa8,
deadline=...) at thread/qwaitcondition_unix.cpp:225
#6  0x00007f988a6c31b1 in QThreadPoolThread::run() (this=0x55c4d6988700) at
../../include/QtCore/../../src/corelib/thread/qmutex.h:270
#7  0x00007f988a6bfbac in QThreadPrivate::start(void*) (arg=0x55c4d6988700) at
thread/qthread_unix.cpp:329
#8  0x00007f9889655609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#9  0x00007f988a341293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f986cdfa700 (LWP 7630)):
#0  futex_abstimed_wait_cancelable (private=<optimized out>,
abstime=0x7f986cdf9b90, clockid=<optimized out>, expected=0,
futex_word=0x55c4d698d8a0) at ../sysdeps/nptl/futex-internal.h:320
#1  __pthread_cond_wait_common (abstime=0x7f986cdf9b90, clockid=<optimized
out>, mutex=0x55c4d698d850, cond=0x55c4d698d878) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x55c4d698d878, mutex=0x55c4d698d850,
abstime=0x7f986cdf9b90) at pthread_cond_wait.c:656
#3  0x00007f988a6c5ca8 in QWaitConditionPrivate::wait_relative(QDeadlineTimer)
(this=0x55c4d698d850, deadline=...) at thread/qwaitcondition_unix.cpp:136
#4  QWaitConditionPrivate::wait(QDeadlineTimer) (deadline=...,
this=0x55c4d698d850) at thread/qwaitcondition_unix.cpp:144
#5  QWaitCondition::wait(QMutex*, QDeadlineTimer)
(this=this@entry=0x55c4d6988470, mutex=mutex@entry=0x55c4d698d718,
deadline=...) at thread/qwaitcondition_unix.cpp:225
#6  0x00007f988a6c31b1 in QThreadPoolThread::run() (this=0x55c4d6988460) at
../../include/QtCore/../../src/corelib/thread/qmutex.h:270
#7  0x00007f988a6bfbac in QThreadPrivate::start(void*) (arg=0x55c4d6988460) at
thread/qthread_unix.cpp:329
#8  0x00007f9889655609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#9  0x00007f988a341293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f986ffff700 (LWP 7629)):
#0  0x00007f988a334aff in __GI___poll (fds=0x7f9864004e60, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f9888ca818e in g_main_context_poll (priority=<optimized out>,
n_fds=1, fds=0x7f9864004e60, timeout=<optimized out>, context=0x7f9864000c20)
at ../../../glib/gmain.c:4346
#2  g_main_context_iterate (context=context@entry=0x7f9864000c20,
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at
../../../glib/gmain.c:4042
#3  0x00007f9888ca82c3 in g_main_context_iteration (context=0x7f9864000c20,
may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#4  0x00007f988a8fffbb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f9864000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007f988a8a41ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f986fffec00, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:141
#6  0x00007f988a6bea12 in QThread::exec() (this=this@entry=0x55c4d5066c40) at
../../include/QtCore/../../src/corelib/global/qflags.h:121
#7  0x00007f988b56ffa9 in QQmlThreadPrivate::run() (this=0x55c4d5066c40) at
qml/ftw/qqmlthread.cpp:155
#8  0x00007f988a6bfbac in QThreadPrivate::start(void*) (arg=0x55c4d5066c40) at
thread/qthread_unix.cpp:329
#9  0x00007f9889655609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#10 0x00007f988a341293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f987cfa9700 (LWP 7628)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x55c4d5059b1c) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55c4d5059ac8,
cond=0x55c4d5059af0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55c4d5059af0, mutex=0x55c4d5059ac8) at
pthread_cond_wait.c:638
#3  0x00007f987ed07e6b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f987ed07a6b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f9889655609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6  0x00007f988a341293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f987d7aa700 (LWP 7627)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x55c4d5059b1c) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55c4d5059ac8,
cond=0x55c4d5059af0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55c4d5059af0, mutex=0x55c4d5059ac8) at
pthread_cond_wait.c:638
#3  0x00007f987ed07e6b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f987ed07a6b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f9889655609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6  0x00007f988a341293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f987dfab700 (LWP 7626)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x55c4d5059b1c) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55c4d5059ac8,
cond=0x55c4d5059af0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55c4d5059af0, mutex=0x55c4d5059ac8) at
pthread_cond_wait.c:638
#3  0x00007f987ed07e6b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f987ed07a6b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f9889655609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6  0x00007f988a341293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f987e7ac700 (LWP 7625)):
#0  futex_wait_cancelable (private=<optimized out>, expected=0,
futex_word=0x55c4d5059b1c) at ../sysdeps/nptl/futex-internal.h:183
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55c4d5059ac8,
cond=0x55c4d5059af0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55c4d5059af0, mutex=0x55c4d5059ac8) at
pthread_cond_wait.c:638
#3  0x00007f987ed07e6b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f987ed07a6b in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f9889655609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#6  0x00007f988a341293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f98850fc700 (LWP 7624)):
#0  __GI___clock_gettime (clock_id=clock_id@entry=1,
tp=tp@entry=0x7f98850fb960) at ../sysdeps/unix/sysv/linux/clock_gettime.c:38
#1  0x00007f988a8ff885 in qt_clock_gettime (ts=0x7f98850fb960, clock=1) at
kernel/qelapsedtimer_unix.cpp:175
#2  do_gettime (frac=<synthetic pointer>, sec=<synthetic pointer>) at
kernel/qelapsedtimer_unix.cpp:166
#3  qt_gettime() () at kernel/qelapsedtimer_unix.cpp:175
#4  0x00007f988a8fe11d in QTimerInfoList::updateCurrentTime()
(this=this@entry=0x7f9880005130) at kernel/qtimerinfo_unix.cpp:91
#5  0x00007f988a8fe6f9 in QTimerInfoList::timerWait(timespec&)
(this=0x7f9880005130, tm=...) at kernel/qtimerinfo_unix.cpp:388
#6  0x00007f988a8ffd16 in timerSourcePrepareHelper (timeout=0x7f98850fba24,
src=<optimized out>) at kernel/qeventdispatcher_glib.cpp:162
#7  timerSourcePrepare(GSource*, gint*) (source=<optimized out>,
timeout=timeout@entry=0x7f98850fba24) at kernel/qeventdispatcher_glib.cpp:166
#8  0x00007f9888ca770f in g_main_context_prepare
(context=context@entry=0x7f9880000c20, priority=priority@entry=0x7f98850fbab0)
at ../../../glib/gmain.c:3619
#9  0x00007f9888ca80bb in g_main_context_iterate
(context=context@entry=0x7f9880000c20, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4027
#10 0x00007f9888ca82c3 in g_main_context_iteration (context=0x7f9880000c20,
may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#11 0x00007f988a8fffbb in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x7f9880000b60, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#12 0x00007f988a8a41ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7f98850fbbf0, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:141
#13 0x00007f988a6bea12 in QThread::exec() (this=this@entry=0x7f988bf28d80
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
../../include/QtCore/../../src/corelib/global/qflags.h:121
#14 0x00007f988bea4f4b in QDBusConnectionManager::run() (this=0x7f988bf28d80
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
qdbusconnection.cpp:179
#15 0x00007f988a6bfbac in QThreadPrivate::start(void*) (arg=0x7f988bf28d80
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
thread/qthread_unix.cpp:329
#16 0x00007f9889655609 in start_thread (arg=<optimized out>) at
pthread_create.c:477
#17 0x00007f988a341293 in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f9885d6ae40 (LWP 7622)):
[KCrash Handler]
#6  0x00007f986ced21bd in QSnapdRequest::handleProgress(void*)
(this=0x55c4db84e7b0, change=<optimized out>) at
../snapd-glib/../snapd-glib/snapd-change.h:23
#7  0x00007f986ce485e3 in update_changes (self=self@entry=0x55c4d698e0a0
[SnapdClient], change=0x7f9855a58c60 [SnapdChange], data=data@entry=0x0) at
../snapd-glib/snapd-client.c:486
#8  0x00007f986ce489e5 in parse_response (self=self@entry=0x55c4d698e0a0
[SnapdClient], request=request@entry=0x7f985400cce0 [SnapdGetChange],
message=message@entry=0x55c4dd9e0a90 [SoupMessage]) at
../snapd-glib/requests/snapd-get-change.h:20
#9  0x00007f986ce4908f in read_cb (socket=<optimized out>, condition=<optimized
out>, self=0x55c4d698e0a0 [SnapdClient]) at ../snapd-glib/snapd-client.c:645
#10 0x00007f98887eb70b in socket_source_dispatch (source=0x55c4db530500,
callback=0x7f986ce48bd0 <read_cb>, user_data=0x55c4d698e0a0) at
../../../gio/gsocket.c:4009
#11 0x00007f9888ca7e6e in g_main_dispatch (context=0x55c4d4e7eca0) at
../../../glib/gmain.c:3309
#12 g_main_context_dispatch (context=context@entry=0x55c4d4e7eca0) at
../../../glib/gmain.c:3974
#13 0x00007f9888ca8220 in g_main_context_iterate
(context=context@entry=0x55c4d4e7eca0, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4047
#14 0x00007f9888ca82c3 in g_main_context_iteration (context=0x55c4d4e7eca0,
may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
#15 0x00007f988a8fffa2 in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>)
(this=0x55c4d4e6f240, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#16 0x00007f988a8a41ab in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>)
(this=this@entry=0x7fffaa910a00, flags=..., flags@entry=...) at
../../include/QtCore/../../src/corelib/global/qflags.h:141
#17 0x00007f988a8ac354 in QCoreApplication::exec() () at
../../include/QtCore/../../src/corelib/global/qflags.h:121
#18 0x000055c4d3e8763d in main(int, char**) (argc=<optimized out>,
argv=<optimized out>) at ./discover/main.cpp:184
[Inferior 1 (process 7622) detached]

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