Bug 440291

Application: plasma-discover (5.12.8)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 5.4.0-77-generic x86_64
Distribution: Ubuntu 18.04.5 LTS

-- Information about the crash:
- What I was doing when the application crashed:
clicked on the updater icon.
My laptop hasn't been used for about 3 weeks if that info helps.

The crash can be reproduced every time.

-- Backtrace:
Application: Discover (plasma-discover), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff8c8205800 (LWP 30478))]

Thread 13 (Thread 0x7ff87affd700 (LWP 30491)):
#0  0x00007ff8c37d6cb9 in __GI___poll (fds=0x7ff86c00ce30, nfds=1, timeout=23648) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff8bdfc86e9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff8bdfc87fc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff8c411f8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ff8c40c490a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff8c3ee323a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ff8c3ee817d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ff8c00f66db in start_thread (arg=0x7ff87affd700) at pthread_create.c:463
#8  0x00007ff8c37e371f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7ff87b7fe700 (LWP 30489)):
#0  0x00007ff8be00e839 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007ff8bdfc7e31 in g_main_context_query () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff8bdfc8667 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff8bdfc8a82 in g_main_loop_run () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff881dcd2d6 in  () at /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#5  0x00007ff8bdff02a5 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007ff8c00f66db in start_thread (arg=0x7ff87b7fe700) at pthread_create.c:463
#7  0x00007ff8c37e371f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7ff87bfff700 (LWP 30488)):
#0  0x00007ff8c37d6cb9 in __GI___poll (fds=0x55b6e71e1710, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff8bdfc86e9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff8bdfc87fc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff8bdfc8841 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff8bdff02a5 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ff8c00f66db in start_thread (arg=0x7ff87bfff700) at pthread_create.c:463
#6  0x00007ff8c37e371f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7ff8833f4700 (LWP 30487)):
#0  0x00007ff8c37d6cb9 in __GI___poll (fds=fds@entry=0x7ff8833f1968, nfds=nfds@entry=1, timeout=5000, timeout@entry=<error reading variable: That operation is not available on integers of more than 8 bytes.>) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff8acd38f49 in send_dg (ansp2_malloced=0x7ff8833f2ef8, resplen2=0x7ff8833f2ef4, anssizp2=0x7ff8833f2ef0, ansp2=0x7ff8833f2f08, anscp=0x7ff8833f2f00, gotsomewhere=<synthetic pointer>, v_circuit=<synthetic pointer>, ns=1, terrno=0x7ff8833f1938, anssizp=0x7ff8833f1a60, ansp=0x7ff8833f1928, buflen2=36, buf2=0x7ff8833f1ab4 "K\300\001", buflen=36, buf=0x7ff8833f1a90 "\225\266\001", statp=<optimized out>) at res_send.c:1115
#2  0x00007ff8acd38f49 in __res_context_send (ctx=ctx@entry=0x7ff8740050a0, buf=buf@entry=0x7ff8833f1a90 "\225\266\001", buflen=buflen@entry=36, buf2=buf2@entry=0x7ff8833f1ab4 "K\300\001", buflen2=buflen2@entry=36, ans=<optimized out>, ans@entry=0x7ff8833f26b0 "\225\266\201\200", anssiz=<optimized out>, ansp=<optimized out>, ansp2=<optimized out>, nansp2=<optimized out>, resplen2=<optimized out>, ansp2_malloced=<optimized out>) at res_send.c:522
#3  0x00007ff8acd364d1 in __GI___res_context_query (ctx=ctx@entry=0x7ff8740050a0, name=name@entry=0x7ff874003018 "distribute.kde.org", class=class@entry=1, type=type@entry=439963904, answer=answer@entry=0x7ff8833f26b0 "\225\266\201\200", anslen=anslen@entry=2048, answerp=0x7ff8833f2f00, answerp2=0x7ff8833f2f08, nanswerp2=0x7ff8833f2ef0, resplen2=0x7ff8833f2ef4, answerp2_malloced=0x7ff8833f2ef8) at res_query.c:216
#4  0x00007ff8acd3728d in __res_context_querydomain (domain=0x0, answerp2_malloced=0x7ff8833f2ef8, resplen2=0x7ff8833f2ef4, nanswerp2=0x7ff8833f2ef0, answerp2=0x7ff8833f2f08, answerp=0x7ff8833f2f00, anslen=2048, answer=0x7ff8833f26b0 "\225\266\201\200", type=439963904, class=1, name=0x7ff874003018 "distribute.kde.org", ctx=0x7ff8740050a0) at res_query.c:601
#5  0x00007ff8acd3728d in __GI___res_context_search (ctx=ctx@entry=0x7ff8740050a0, name=name@entry=0x7ff874003018 "distribute.kde.org", class=class@entry=1, type=type@entry=439963904, answer=answer@entry=0x7ff8833f26b0 "\225\266\201\200", anslen=anslen@entry=2048, answerp=0x7ff8833f2f00, answerp2=0x7ff8833f2f08, nanswerp2=0x7ff8833f2ef0, resplen2=0x7ff8833f2ef4, answerp2_malloced=0x7ff8833f2ef8) at res_query.c:370
#6  0x00007ff883bf8b56 in _nss_dns_gethostbyname4_r (name=name@entry=0x7ff874003018 "distribute.kde.org", pat=pat@entry=0x7ff8833f30e8, buffer=0x7ff8833f3370 "\177", buflen=1024, errnop=errnop@entry=0x7ff8833f4650, herrnop=herrnop@entry=0x7ff8833f46b4, ttlp=0x0) at nss_dns/dns-host.c:351
#7  0x00007ff8c37c7e15 in gaih_inet (name=name@entry=0x7ff874003018 "distribute.kde.org", service=<optimized out>, req=req@entry=0x7ff8833f3800, pai=pai@entry=0x7ff8833f32f8, naddrs=naddrs@entry=0x7ff8833f32f4, tmpbuf=tmpbuf@entry=0x7ff8833f3360) at ../sysdeps/posix/getaddrinfo.c:786
#8  0x00007ff8c37c9da4 in __GI_getaddrinfo (name=<optimized out>, service=<optimized out>, hints=0x7ff8833f3800, pai=0x7ff8833f37e0) at ../sysdeps/posix/getaddrinfo.c:2300
#9  0x00007ff8c16f98e3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#10 0x00007ff8c16ec823 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#11 0x00007ff8c3ee52b2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007ff8c3ee817d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007ff8c00f66db in start_thread (arg=0x7ff8833f4700) at pthread_create.c:463
#14 0x00007ff8c37e371f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7ff883bf5700 (LWP 30486)):
#0  0x00007ff8c00fcfb9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7ff883bf4c40, expected=0, futex_word=0x7ff884009770) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007ff8c00fcfb9 in __pthread_cond_wait_common (abstime=0x7ff883bf4d00, mutex=0x7ff884009720, cond=0x7ff884009748) at pthread_cond_wait.c:533
#2  0x00007ff8c00fcfb9 in __pthread_cond_timedwait (cond=0x7ff884009748, mutex=0x7ff884009720, abstime=0x7ff883bf4d00) at pthread_cond_wait.c:667
#3  0x00007ff8c3ee9468 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ff8c3ee553d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff8c3ee817d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ff8c00f66db in start_thread (arg=0x7ff883bf5700) at pthread_create.c:463
#7  0x00007ff8c37e371f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7ff890a45700 (LWP 30485)):
#0  0x00007ff8c00fcfb9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7ff890a44c40, expected=0, futex_word=0x7ff884006df0) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007ff8c00fcfb9 in __pthread_cond_wait_common (abstime=0x7ff890a44d00, mutex=0x7ff884006da0, cond=0x7ff884006dc8) at pthread_cond_wait.c:533
#2  0x00007ff8c00fcfb9 in __pthread_cond_timedwait (cond=0x7ff884006dc8, mutex=0x7ff884006da0, abstime=0x7ff890a44d00) at pthread_cond_wait.c:667
#3  0x00007ff8c3ee9468 in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ff8c3ee553d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff8c3ee817d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ff8c00f66db in start_thread (arg=0x7ff890a45700) at pthread_create.c:463
#7  0x00007ff8c37e371f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7ff891246700 (LWP 30484)):
#0  0x00007ff8c00fcad3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7ff884028e80) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007ff8c00fcad3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7ff884028e30, cond=0x7ff884028e58) at pthread_cond_wait.c:502
#2  0x00007ff8c00fcad3 in __pthread_cond_wait (cond=0x7ff884028e58, mutex=0x7ff884028e30) at pthread_cond_wait.c:655
#3  0x00007ff8c3ee95ab in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ff8c3ee1c1b in QSemaphore::acquire(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff8c40f5868 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ff8c1756df2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#7  0x00007ff8c1757d4c in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#8  0x00007ff8c40f5555 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007ff8c1755eb2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#10 0x00007ff8c16b723f in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#11 0x00007ff8c16b86cc in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#12 0x00007ff8c40f5555 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007ff8c172add2 in QSslSocket::preSharedKeyAuthenticationRequired(QSslPreSharedKeyAuthenticator*) () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#14 0x00007ff8c174ecdc in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#15 0x00007ff89128c1d6 in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#16 0x00007ff89128a36b in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#17 0x00007ff89129434e in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#18 0x00007ff891293247 in  () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#19 0x00007ff89127f4e4 in SSL_do_handshake () at /usr/lib/x86_64-linux-gnu/libssl.so.1.1
#20 0x00007ff8c174f10d in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#21 0x00007ff8c174f835 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#22 0x00007ff8c172b8cc in QSslSocket::startClientEncryption() () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#23 0x00007ff8c172c578 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#24 0x00007ff8c1734379 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#25 0x00007ff8c40f5555 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007ff8c16fef09 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#27 0x00007ff8c1701e78 in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#28 0x00007ff8c17127ed in  () at /usr/lib/x86_64-linux-gnu/libQt5Network.so.5
#29 0x00007ff8c639a83c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007ff8c63a2104 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007ff8c40c68d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007ff8c41204ed in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007ff8bdfc8537 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007ff8bdfc8770 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007ff8bdfc87fc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007ff8c411f8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007ff8c40c490a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007ff8c3ee323a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x00007ff8c3ee817d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x00007ff8c00f66db in start_thread (arg=0x7ff891246700) at pthread_create.c:463
#41 0x00007ff8c37e371f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7ff89283d700 (LWP 30483)):
#0  0x00007ff8c37d6cb9 in __GI___poll (fds=0x7ff88c004e10, nfds=1, timeout=2648) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff8bdfc86e9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff8bdfc87fc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff8c411f8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ff8c40c490a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff8c3ee323a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ff8c3ee817d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ff8c00f66db in start_thread (arg=0x7ff89283d700) at pthread_create.c:463
#8  0x00007ff8c37e371f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7ff89bfff700 (LWP 30482)):
#0  0x00007ff8c37d2184 in __GI___libc_read (fd=14, buf=0x7ff89bffeb20, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007ff8be00d4c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff8bdfc81d7 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff8bdfc8690 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007ff8bdfc87fc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007ff8c411f8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ff8c40c490a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007ff8c3ee323a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ff8c72c32a6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#9  0x00007ff8c3ee817d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007ff8c00f66db in start_thread (arg=0x7ff89bfff700) at pthread_create.c:463
#11 0x00007ff8c37e371f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7ff8ab47a700 (LWP 30481)):
#0  0x00007ff8c8046719 in _dl_update_slotinfo (req_modid=1) at ../elf/dl-tls.c:623
#1  0x00007ff8c8046a1c in update_get_addr (ti=0x7ff8c45816a0) at ../elf/dl-tls.c:799
#2  0x00007ff8c804cba8 in __tls_get_addr () at ../sysdeps/x86_64/tls_get_addr.S:55
#3  0x00007ff8c3ee7006 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ff8c411f7aa in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff8bdfc7c48 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007ff8bdfc861b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007ff8bdfc87fc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#8  0x00007ff8c411f8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007ff8c40c490a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007ff8c3ee323a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007ff8c4af96f5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Qml.so.5
#12 0x00007ff8c3ee817d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007ff8c00f66db in start_thread (arg=0x7ff8ab47a700) at pthread_create.c:463
#14 0x00007ff8c37e371f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7ff8ac68b700 (LWP 30480)):
#0  0x00007ff8c37d6cb9 in __GI___poll (fds=0x7ff8a4019120, nfds=1, timeout=17813) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff8bdfc86e9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007ff8bdfc87fc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007ff8c411f8ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007ff8c40c490a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff8c3ee323a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007ff8c52d4d45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007ff8c3ee817d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007ff8c00f66db in start_thread (arg=0x7ff8ac68b700) at pthread_create.c:463
#9  0x00007ff8c37e371f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7ff8b5c08700 (LWP 30479)):
#0  0x00007ff8c37d6cb9 in __GI___poll (fds=0x7ff8b5c07ca8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007ff8bdd5f747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007ff8bdd6136a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007ff8b89b55e9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007ff8c3ee817d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007ff8c00f66db in start_thread (arg=0x7ff8b5c08700) at pthread_create.c:463
#6  0x00007ff8c37e371f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7ff8c8205800 (LWP 30478)):
[KCrash Handler]
#6  0x00007ff8c3700fb7 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#7  0x00007ff8c3702921 in __GI_abort () at abort.c:79
#8  0x00007ff8c3ed2fb7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007ff8c73262a7 in QSGRenderLoop::handleContextCreationFailure(QQuickWindow*, bool) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#10 0x00007ff8c7327275 in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#11 0x00007ff8c7327e9a in  () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#12 0x00007ff8c5bea3d5 in QWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#13 0x00007ff8c739c6c5 in QQuickWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Quick.so.5
#14 0x00007ff8c639a83c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#15 0x00007ff8c63a2104 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#16 0x00007ff8c40c68d8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007ff8c5bdf49f in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#18 0x00007ff8c5be00dd in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#19 0x00007ff8c5bb72eb in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#20 0x00007ff8b8a1a260 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#21 0x00007ff8bdfc8537 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007ff8bdfc8770 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007ff8bdfc87fc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007ff8c411f88f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007ff8c40c490a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007ff8c40cd9b4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x000055b6e56a7148 in  ()
#28 0x00007ff8c36e3bf7 in __libc_start_main (main=0x55b6e56a6870, argc=3, argv=0x7ffe45b02408, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe45b023f8) at ../csu/libc-start.c:310
#29 0x000055b6e56a73ca in _start ()

Reported using DrKonqi