[kmail2] [Bug 406261] New: Kmail2 crashes when accepting meeting invitation

Peter Wibberley bugzilla_noreply at kde.org
Fri Apr 5 18:54:58 BST 2019


https://bugs.kde.org/show_bug.cgi?id=406261

            Bug ID: 406261
           Summary: Kmail2 crashes when accepting meeting invitation
           Product: kmail2
           Version: 5.10.3
          Platform: Ubuntu Packages
                OS: Linux
            Status: REPORTED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: kdepim-bugs at kde.org
          Reporter: p.wibberley at btinternet.com
  Target Milestone: ---

Application: kmail (5.10.3)

Qt Version: 5.12.0
Frameworks Version: 5.56.0
Operating System: Linux 4.15.0-47-generic x86_64
Distribution: KDE neon LTS User Edition 5.12

-- Information about the crash:
Kmail2 crashed at the moment that I clicked the Accept button in a meeting
invitation.

The crash can be reproduced every time.

-- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f1aa4013bc0 (LWP 10078))]

Thread 30 (Thread 0x7f1939a4b700 (LWP 13399)):
#0  0x00007f1a7b81e57d in pa_pstream_unref () at
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#1  0x00007f1a7b81eab9 in  () at
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#2  0x00007f1a7b81f33f in  () at
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#3  0x00007f1a833da108 in pa_mainloop_dispatch () at
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f1a833da4de in pa_mainloop_iterate () at
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f1a833da560 in pa_mainloop_run () at
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f1a833e83c9 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#7  0x00007f1a7b82f318 in  () at
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#8  0x00007f1a968106db in start_thread (arg=0x7f1939a4b700) at
pthread_create.c:463
#9  0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 29 (Thread 0x7f193affd700 (LWP 13380)):
#0  0x00007f1aa10540b4 in __GI___libc_read (fd=111, buf=0x7f193affc7d0,
nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f1a94988cd0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1a94944027 in g_main_context_check () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1a949444e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1a9494464c in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1aa199b15b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1aa193c64a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f1aa176441a in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f1aa1765bc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f1a968106db in start_thread (arg=0x7f193affd700) at
pthread_create.c:463
#10 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 28 (Thread 0x7f193b7fe700 (LWP 13379)):
#0  0x00007f1a96816ed9 in futex_reltimed_wait_cancelable (private=<optimized
out>, reltime=0x7f193b7fd710, expected=0, futex_word=0x7f193b7fd8f8) at
../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f1a96816ed9 in __pthread_cond_wait_common (abstime=0x7f193b7fd7b0,
mutex=0x7f193b7fd8a8, cond=0x7f193b7fd8d0) at pthread_cond_wait.c:533
#2  0x00007f1a96816ed9 in __pthread_cond_timedwait (cond=0x7f193b7fd8d0,
mutex=0x7f193b7fd8a8, abstime=0x7f193b7fd7b0) at pthread_cond_wait.c:667
#3  0x00007f1a8b775177 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f1a8b775ada in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f1a8b775bc2 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f1a8b733851 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f1a8b736387 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f1a8b736974 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f1a8b777cd1 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f1a968106db in start_thread (arg=0x7f193b7fe700) at
pthread_create.c:463
#11 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 27 (Thread 0x7f193bfff700 (LWP 13378)):
#0  0x00007f1a96816ed9 in futex_reltimed_wait_cancelable (private=<optimized
out>, reltime=0x7f193bffe710, expected=0, futex_word=0x7f193bffe8f8) at
../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f1a96816ed9 in __pthread_cond_wait_common (abstime=0x7f193bffe7b0,
mutex=0x7f193bffe8a8, cond=0x7f193bffe8d0) at pthread_cond_wait.c:533
#2  0x00007f1a96816ed9 in __pthread_cond_timedwait (cond=0x7f193bffe8d0,
mutex=0x7f193bffe8a8, abstime=0x7f193bffe7b0) at pthread_cond_wait.c:667
#3  0x00007f1a8b775177 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f1a8b775ada in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f1a8b775bc2 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f1a8b733851 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f1a8b7366b6 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f1a8b736974 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f1a8b777cd1 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f1a968106db in start_thread (arg=0x7f193bfff700) at
pthread_create.c:463
#11 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 26 (Thread 0x7f19499fa700 (LWP 13376)):
#0  0x00007f1a96816ed9 in futex_reltimed_wait_cancelable (private=<optimized
out>, reltime=0x7f19499f9710, expected=0, futex_word=0x7f19499f98f8) at
../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f1a96816ed9 in __pthread_cond_wait_common (abstime=0x7f19499f97b0,
mutex=0x7f19499f98a8, cond=0x7f19499f98d0) at pthread_cond_wait.c:533
#2  0x00007f1a96816ed9 in __pthread_cond_timedwait (cond=0x7f19499f98d0,
mutex=0x7f19499f98a8, abstime=0x7f19499f97b0) at pthread_cond_wait.c:667
#3  0x00007f1a8b775177 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f1a8b775ada in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f1a8b775bc2 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f1a8b733851 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f1a8b7366b6 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f1a8b736974 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f1a8b777cd1 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f1a968106db in start_thread (arg=0x7f19499fa700) at
pthread_create.c:463
#11 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 25 (Thread 0x7f19491f9700 (LWP 13375)):
#0  0x00007f1a96816ed9 in futex_reltimed_wait_cancelable (private=<optimized
out>, reltime=0x7f19491f8710, expected=0, futex_word=0x7f19491f88f8) at
../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f1a96816ed9 in __pthread_cond_wait_common (abstime=0x7f19491f87b0,
mutex=0x7f19491f88a8, cond=0x7f19491f88d0) at pthread_cond_wait.c:533
#2  0x00007f1a96816ed9 in __pthread_cond_timedwait (cond=0x7f19491f88d0,
mutex=0x7f19491f88a8, abstime=0x7f19491f87b0) at pthread_cond_wait.c:667
#3  0x00007f1a8b775177 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f1a8b775ada in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f1a8b775bc2 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f1a8b733851 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f1a8b7366b6 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f1a8b736974 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f1a8b777cd1 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f1a968106db in start_thread (arg=0x7f19491f9700) at
pthread_create.c:463
#11 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 24 (Thread 0x7f19489f8700 (LWP 13374)):
#0  0x00007f1a96816ed9 in futex_reltimed_wait_cancelable (private=<optimized
out>, reltime=0x7f19489f7710, expected=0, futex_word=0x7f19489f78f8) at
../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f1a96816ed9 in __pthread_cond_wait_common (abstime=0x7f19489f77b0,
mutex=0x7f19489f78a8, cond=0x7f19489f78d0) at pthread_cond_wait.c:533
#2  0x00007f1a96816ed9 in __pthread_cond_timedwait (cond=0x7f19489f78d0,
mutex=0x7f19489f78a8, abstime=0x7f19489f77b0) at pthread_cond_wait.c:667
#3  0x00007f1a8b775177 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f1a8b775ada in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f1a8b775bc2 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f1a8b733851 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f1a8b7366b6 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f1a8b736974 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f1a8b777cd1 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f1a968106db in start_thread (arg=0x7f19489f8700) at
pthread_create.c:463
#11 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7f1a2ffff700 (LWP 10791)):
#0  0x00007f1aa10540b4 in __GI___libc_read (fd=90, buf=0x7f1a2fffe7d0,
nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f1a94988cd0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1a94944027 in g_main_context_check () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1a949444e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1a9494464c in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1aa199b15b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1aa193c64a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f1aa176441a in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f1aa1765bc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f1a968106db in start_thread (arg=0x7f1a2ffff700) at
pthread_create.c:463
#10 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7f1a3cff9700 (LWP 10337)):
#0  0x00007f1a80df21d9 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#1  0x00007f1a80de8114 in event_base_loop () at
/usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#2  0x00007f1a8b77b7dd in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#3  0x00007f1a8b71249b in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f1a8b744d21 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f1a8b777cd1 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f1a968106db in start_thread (arg=0x7f1a3cff9700) at
pthread_create.c:463
#7  0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7f19dffff700 (LWP 10335)):
#0  0x00007f1a96816ed9 in futex_reltimed_wait_cancelable (private=<optimized
out>, reltime=0x7f19dfffe710, expected=0, futex_word=0x7f19dfffe8f8) at
../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f1a96816ed9 in __pthread_cond_wait_common (abstime=0x7f19dfffe7b0,
mutex=0x7f19dfffe8a8, cond=0x7f19dfffe8d0) at pthread_cond_wait.c:533
#2  0x00007f1a96816ed9 in __pthread_cond_timedwait (cond=0x7f19dfffe8d0,
mutex=0x7f19dfffe8a8, abstime=0x7f19dfffe7b0) at pthread_cond_wait.c:667
#3  0x00007f1a8b775177 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f1a8b775ada in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f1a8b775bc2 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f1a8b733851 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f1a8b7366b6 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f1a8b736974 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f1a8b777cd1 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f1a968106db in start_thread (arg=0x7f19dffff700) at
pthread_create.c:463
#11 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7f19d5cbc700 (LWP 10135)):
#0  0x00007f1aa10540b4 in __GI___libc_read (fd=87, buf=0x7f19d5cbb7d0,
nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f1a94988cd0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1a94944027 in g_main_context_check () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1a949444e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1a9494464c in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1aa199b15b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1aa193c64a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f1aa176441a in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f1aa1765bc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f1a968106db in start_thread (arg=0x7f19d5cbc700) at
pthread_create.c:463
#10 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f19de289700 (LWP 10132)):
#0  0x00007f1a968169f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x7f1a86d2dfb8) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f1a968169f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x7f1a86d2df68, cond=0x7f1a86d2df90) at pthread_cond_wait.c:502
#2  0x00007f1a968169f3 in __pthread_cond_wait (cond=0x7f1a86d2df90,
mutex=0x7f1a86d2df68) at pthread_cond_wait.c:655
#3  0x00007f1a86a37844 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f1a86a37889 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f1a968106db in start_thread (arg=0x7f19de289700) at
pthread_create.c:463
#6  0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f1a00ba6700 (LWP 10109)):
#0  0x00007f1a968169f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x7f1a00ba5908) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f1a968169f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x7f1a00ba58b8, cond=0x7f1a00ba58e0) at pthread_cond_wait.c:502
#2  0x00007f1a968169f3 in __pthread_cond_wait (cond=0x7f1a00ba58e0,
mutex=0x7f1a00ba58b8) at pthread_cond_wait.c:655
#3  0x00007f1a8b7750a9 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f1a8b775ae8 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f1a8b775b7f in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f1a8b733868 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f1a8b7366b6 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f1a8b7369f4 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f1a8b777cd1 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f1a968106db in start_thread (arg=0x7f1a00ba6700) at
pthread_create.c:463
#11 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f1a037fe700 (LWP 10108)):
#0  0x00007f1aa1058bf9 in __GI___poll (fds=0x7f19ec007030, nfds=3, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f1a833e8481 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007f1a833d9e40 in pa_mainloop_poll () at
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f1a833da4d0 in pa_mainloop_iterate () at
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f1a833da560 in pa_mainloop_run () at
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f1a833e83c9 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f1a7b82f318 in  () at
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#7  0x00007f1a968106db in start_thread (arg=0x7f1a037fe700) at
pthread_create.c:463
#8  0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f1a03fff700 (LWP 10107)):
#0  0x00007f1aa10746ac in __lll_lock_wait_private () at
../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f1aa1076474 in ___fprintf_chk (fp=0x7f1aa13318b0
<_IO_stdfile_2_lock>, flag=1, format=0x7f1a80e086a8 "[%s] %s\n") at
fprintf_chk.c:30
#2  0x00007f1a80df09ad in event_logv_ () at
/usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f1a80df0b44 in event_warn () at
/usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f1a80df246c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f1a80de8114 in event_base_loop () at
/usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f1a8b77b7dd in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f1a8b71249b in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f1a8b744d21 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f1a8b777cd1 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f1a968106db in start_thread (arg=0x7f1a03fff700) at
pthread_create.c:463
#11 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f1a2cff9700 (LWP 10106)):
#0  0x00007f1a96816ed9 in futex_reltimed_wait_cancelable (private=<optimized
out>, reltime=0x7f1a2cff8700, expected=0, futex_word=0x7f1a2cff88e8) at
../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f1a96816ed9 in __pthread_cond_wait_common (abstime=0x7f1a2cff87a0,
mutex=0x7f1a2cff8898, cond=0x7f1a2cff88c0) at pthread_cond_wait.c:533
#2  0x00007f1a96816ed9 in __pthread_cond_timedwait (cond=0x7f1a2cff88c0,
mutex=0x7f1a2cff8898, abstime=0x7f1a2cff87a0) at pthread_cond_wait.c:667
#3  0x00007f1a8b775177 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f1a8b775ada in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f1a8b6efb70 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f1a8b71249b in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f1a8b744d21 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f1a8b777cd1 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f1a968106db in start_thread (arg=0x7f1a2cff9700) at
pthread_create.c:463
#10 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f1a2d7fa700 (LWP 10105)):
#0  0x00007f1a96816ed9 in futex_reltimed_wait_cancelable (private=<optimized
out>, reltime=0x7f1a2d7f9700, expected=0, futex_word=0x7f1a2d7f98e8) at
../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f1a96816ed9 in __pthread_cond_wait_common (abstime=0x7f1a2d7f97a0,
mutex=0x7f1a2d7f9898, cond=0x7f1a2d7f98c0) at pthread_cond_wait.c:533
#2  0x00007f1a96816ed9 in __pthread_cond_timedwait (cond=0x7f1a2d7f98c0,
mutex=0x7f1a2d7f9898, abstime=0x7f1a2d7f97a0) at pthread_cond_wait.c:667
#3  0x00007f1a8b775177 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f1a8b775ada in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f1a8b6efb70 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f1a8b71249b in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f1a8b744d21 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f1a8b777cd1 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f1a968106db in start_thread (arg=0x7f1a2d7fa700) at
pthread_create.c:463
#10 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f1a2dffb700 (LWP 10104)):
#0  0x00007f1a968169f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x562cdea69b08) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f1a968169f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x562cdea69a48, cond=0x562cdea69ae0) at pthread_cond_wait.c:502
#2  0x00007f1a968169f3 in __pthread_cond_wait (cond=0x562cdea69ae0,
mutex=0x562cdea69a48) at pthread_cond_wait.c:655
#3  0x00007f1a8b7750a9 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f1a8c03eb28 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f1a8b7462df in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f1a8b777cd1 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f1a968106db in start_thread (arg=0x7f1a2dffb700) at
pthread_create.c:463
#8  0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f1a2e7fc700 (LWP 10103)):
#0  0x00007f1a968169f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x7f1a2e7fb908) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f1a968169f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x7f1a2e7fb8b8, cond=0x7f1a2e7fb8e0) at pthread_cond_wait.c:502
#2  0x00007f1a968169f3 in __pthread_cond_wait (cond=0x7f1a2e7fb8e0,
mutex=0x7f1a2e7fb8b8) at pthread_cond_wait.c:655
#3  0x00007f1a8b7750a9 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f1a8b775ae8 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f1a8b775b7f in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f1a8b733868 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f1a8b7366b6 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f1a8b7369b4 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f1a8b777cd1 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f1a968106db in start_thread (arg=0x7f1a2e7fc700) at
pthread_create.c:463
#11 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f1a2effd700 (LWP 10102)):
#0  0x00007f1aa10746ac in __lll_lock_wait_private () at
../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f1aa1076474 in ___fprintf_chk (fp=0x7f1aa13318b0
<_IO_stdfile_2_lock>, flag=1, format=0x7f1a80e086a8 "[%s] %s\n") at
fprintf_chk.c:30
#2  0x00007f1a80df09ad in event_logv_ () at
/usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f1a80df0b44 in event_warn () at
/usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f1a80df246c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f1a80de8114 in event_base_loop () at
/usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f1a8b77b8c4 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f1a8b71249b in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f1a8b0ca754 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f1a8b744e78 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f1a8b777cd1 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f1a968106db in start_thread (arg=0x7f1a2effd700) at
pthread_create.c:463
#12 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f1a3d7fa700 (LWP 10098)):
#0  0x00007f1a96816ed9 in futex_reltimed_wait_cancelable (private=<optimized
out>, reltime=0x7f1a3d7f9710, expected=0, futex_word=0x7f1a3d7f98f8) at
../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f1a96816ed9 in __pthread_cond_wait_common (abstime=0x7f1a3d7f97b0,
mutex=0x7f1a3d7f98a8, cond=0x7f1a3d7f98d0) at pthread_cond_wait.c:533
#2  0x00007f1a96816ed9 in __pthread_cond_timedwait (cond=0x7f1a3d7f98d0,
mutex=0x7f1a3d7f98a8, abstime=0x7f1a3d7f97b0) at pthread_cond_wait.c:667
#3  0x00007f1a8b775177 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f1a8b775ada in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f1a8b775bc2 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f1a8b733851 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f1a8b7366b6 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f1a8b736974 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f1a8b777cd1 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f1a968106db in start_thread (arg=0x7f1a3d7fa700) at
pthread_create.c:463
#11 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f1a3dffb700 (LWP 10097)):
#0  0x00007f1aa10746d9 in __lll_unlock_wake_private () at
../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:341
#1  0x00007f1aa107650c in _IO_acquire_lock_clear_flags2_fct (p=<synthetic
pointer>) at ../libio/libioP.h:807
#2  0x00007f1aa107650c in ___fprintf_chk (fp=0x7f1aa1330680 <_IO_2_1_stderr_>,
flag=1, format=<optimized out>) at fprintf_chk.c:30
#3  0x00007f1a80df09ad in event_logv_ () at
/usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f1a80df0b44 in event_warn () at
/usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f1a80df246c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f1a80de8114 in event_base_loop () at
/usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#7  0x00007f1a8b77b789 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f1a8b71249b in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f1a8b739f44 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f1a8b744e78 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f1a8b777cd1 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f1a968106db in start_thread (arg=0x7f1a3dffb700) at
pthread_create.c:463
#13 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f1a3effd700 (LWP 10095)):
#0  0x00007f1aa0fedeaf in __strcmp_sse2_unaligned () at
../sysdeps/x86_64/multiarch/strcmp-sse2-unaligned.S:42
#1  0x00007f1aa0f74dc7 in transcmp (p1=0x7f1a3effc610, p2=0x562cde481c60) at
dcigettext.c:290
#2  0x00007f1aa10616eb in __GI___tfind (key=key at entry=0x7f1a3effc610,
vrootp=vrootp at entry=0x7f1aa1330c48 <root>, compar=compar at entry=0x7f1aa0f74da0
<transcmp>) at tsearch.c:388
#3  0x00007f1aa0f763ff in __dcigettext (domainname=0x7f1aa10f7d14
<_libc_intl_domainname> "libc", msgid1=0x7f1aa10f818a "Bad file descriptor",
msgid2=msgid2 at entry=0x0, plural=plural at entry=0, n=n at entry=0,
category=category at entry=5) at dcigettext.c:570
#4  0x00007f1aa0f74d7f in __GI___dcgettext (domainname=<optimized out>,
msgid=<optimized out>, category=category at entry=5) at dcgettext.c:47
#5  0x00007f1aa0fe1b28 in __GI___strerror_r (errnum=errnum at entry=9,
buf=buf at entry=0x0, buflen=buflen at entry=0) at _strerror.c:71
#6  0x00007f1aa0fe1a4f in strerror (errnum=9) at strerror.c:31
#7  0x00007f1a80df0b31 in event_warn () at
/usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007f1a80df246c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#9  0x00007f1a80de8114 in event_base_loop () at
/usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#10 0x00007f1a8b77b7dd in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f1a8b71249b in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f1a8b744d21 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007f1a8b777cd1 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007f1a968106db in start_thread (arg=0x7f1a3effd700) at
pthread_create.c:463
#15 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f1a49e6f700 (LWP 10087)):
#0  0x00007f1aa1058bf9 in __GI___poll (fds=0x7f1a400049b0, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f1a94944539 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1a9494464c in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1aa199b15b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1aa193c64a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1aa176441a in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1aa1765bc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f1a968106db in start_thread (arg=0x7f1a49e6f700) at
pthread_create.c:463
#8  0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f1a535ba700 (LWP 10084)):
#0  0x00007f1aa1058bf9 in __GI___poll (fds=0x7f1a4405ee00, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f1a94944539 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1a9494464c in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1aa199b15b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1aa193c64a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1aa176441a in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1aa1765bc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f1a968106db in start_thread (arg=0x7f1a535ba700) at
pthread_create.c:463
#8  0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f1a53dbb700 (LWP 10083)):
#0  0x00007f1aa1058bf9 in __GI___poll (fds=0x7f1a4c003ce0, nfds=1, timeout=-1)
at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f1a94944539 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1a9494464c in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1aa199b15b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f1aa193c64a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f1aa176441a in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1aa1765bc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f1a968106db in start_thread (arg=0x7f1a53dbb700) at
pthread_create.c:463
#8  0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f1a60d38700 (LWP 10082)):
#0  0x00007f1aa199986f in QTimerInfoList::timerWait(timespec&) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f1aa199ae9e in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f1a94943a98 in g_main_context_prepare () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1a9494446b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1a9494464c in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1aa199b15b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1aa193c64a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f1aa176441a in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f1aa1765bc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f1a968106db in start_thread (arg=0x7f1a60d38700) at
pthread_create.c:463
#10 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f1a61f49700 (LWP 10081)):
#0  0x00007f1aa10540b4 in __GI___libc_read (fd=8, buf=0x7f1a61f487a0,
nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f1a94988cd0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f1a94944027 in g_main_context_check () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f1a949444e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f1a9494464c in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f1aa199b15b in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f1aa193c64a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f1aa176441a in QThread::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f1a9fd4a015 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f1aa1765bc2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f1a968106db in start_thread (arg=0x7f1a61f49700) at
pthread_create.c:463
#11 0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f1a63f92700 (LWP 10080)):
#0  0x00007f1a968169f3 in futex_wait_cancelable (private=<optimized out>,
expected=0, futex_word=0x562cde4e2d28) at
../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f1a968169f3 in __pthread_cond_wait_common (abstime=0x0,
mutex=0x562cde4e2cd8, cond=0x562cde4e2d00) at pthread_cond_wait.c:502
#2  0x00007f1a968169f3 in __pthread_cond_wait (cond=0x562cde4e2d00,
mutex=0x562cde4e2cd8) at pthread_cond_wait.c:655
#3  0x00007f1a65117dcb in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f1a65117af7 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f1a968106db in start_thread (arg=0x7f1a63f92700) at
pthread_create.c:463
#6  0x00007f1aa106588f in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f1aa4013bc0 (LWP 10078)):
[KCrash Handler]
#6  0x00007f1a8fe13400 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f1a8b0bb961 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f1a8b0bbdff in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f1a8b3f0a6f in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f1a8b3ff03a in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f1a8b21ca49 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f1a8b21cc11 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007f1a8b223777 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007f1a8b223991 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007f1a8b2057c1 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#16 0x00007f1a8b5272c8 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#17 0x00007f1a8b527c91 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#18 0x00007f1a89bab3e7 in
QtWebEngineCore::WebContentsAdapter::~WebContentsAdapter() () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#19 0x00007f1a90a4d25a in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineWidgets.so.5
#20 0x00007f1a90a4d2e9 in  () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineWidgets.so.5
#21 0x00007f1a90a48f6e in QWebEnginePage::~QWebEnginePage() () at
/usr/lib/x86_64-linux-gnu/libQt5WebEngineWidgets.so.5
#22 0x00007f1a9de12ff9 in
MessageViewer::MailWebEnginePage::~MailWebEnginePage() () at
/usr/lib/x86_64-linux-gnu/libKF5MessageViewer.so.5
#23 0x00007f1aa196b9fb in QObjectPrivate::deleteChildren() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f1aa277019c in QWidget::~QWidget() () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007f1a9de116a9 in
MessageViewer::MailWebEngineView::~MailWebEngineView() () at
/usr/lib/x86_64-linux-gnu/libKF5MessageViewer.so.5
#26 0x00007f1a9ddbe504 in MessageViewer::ViewerPrivate::~ViewerPrivate() () at
/usr/lib/x86_64-linux-gnu/libKF5MessageViewer.so.5
#27 0x00007f1a9ddbe7a9 in MessageViewer::ViewerPrivate::~ViewerPrivate() () at
/usr/lib/x86_64-linux-gnu/libKF5MessageViewer.so.5
#28 0x00007f1aa196b9fb in QObjectPrivate::deleteChildren() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f1aa277019c in QWidget::~QWidget() () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007f1a9ddb1e09 in MessageViewer::Viewer::~Viewer() () at
/usr/lib/x86_64-linux-gnu/libKF5MessageViewer.so.5
#31 0x00007f1aa196b9fb in QObjectPrivate::deleteChildren() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f1aa277019c in QWidget::~QWidget() () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#33 0x00007f1aa3881d29 in KMReaderWin::~KMReaderWin() () at
/usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#34 0x00007f1aa196b9fb in QObjectPrivate::deleteChildren() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007f1aa277019c in QWidget::~QWidget() () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#36 0x00007f1aa0a5068d in KMainWindow::~KMainWindow() () at
/usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#37 0x00007f1aa38b556b in KMReaderMainWin::~KMReaderMainWin() () at
/usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#38 0x00007f1aa38b55d9 in KMReaderMainWin::~KMReaderMainWin() () at
/usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#39 0x00007f1aa196e9b0 in QObject::event(QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x00007f1aa2774f4b in QWidget::event(QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#41 0x00007f1aa287d030 in QMainWindow::event(QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#42 0x00007f1aa0a52b61 in KMainWindow::event(QEvent*) () at
/usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#43 0x00007f1aa0a989c5 in KXmlGuiWindow::event(QEvent*) () at
/usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#44 0x00007f1aa273483c in QApplicationPrivate::notify_helper(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#45 0x00007f1aa273bdd0 in QApplication::notify(QObject*, QEvent*) () at
/usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#46 0x00007f1aa193e328 in QCoreApplication::notifyInternal2(QObject*, QEvent*)
() at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#47 0x00007f1aa1940e87 in QCoreApplicationPrivate::sendPostedEvents(QObject*,
int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#48 0x00007f1aa199bb23 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#49 0x00007f1a94944387 in g_main_context_dispatch () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#50 0x00007f1a949445c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#51 0x00007f1a9494464c in g_main_context_iteration () at
/usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#52 0x00007f1aa199b13f in
QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) ()
at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#53 0x00007f1aa193c64a in
QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#54 0x00007f1aa1945800 in QCoreApplication::exec() () at
/usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#55 0x0000562cdd3f085d in  ()
#56 0x00007f1aa0f65b97 in __libc_start_main (main=0x562cdd3ef8c0, argc=1,
argv=0x7ffc2cf5c0f8, init=<optimized out>, fini=<optimized out>,
rtld_fini=<optimized out>, stack_end=0x7ffc2cf5c0e8) at ../csu/libc-start.c:310
#57 0x0000562cdd3f098a in _start ()

Reported using DrKonqi

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