Application: kmail (5.7.3)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 4.15.0-38-generic x86_64
Distribution: Ubuntu 18.04.1 LTS

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

Kmail hangs when clicking on a mail to view its content.
It afterward crashes, when trying to close Kmail.

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 0x7f2b66816b80 (LWP 6102))]

Thread 34 (Thread 0x7f29f978f700 (LWP 6173)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9ef9f9538) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9ef9f94e8, cond=0x55b9ef9f9510) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9ef9f9510, mutex=0x55b9ef9f94e8) at pthread_cond_wait.c:655
#3  0x00007f2b4e08cc95 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f2b4e08d177 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f2b4e08df11 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f2b4e08a5eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f2b591e56db in start_thread (arg=0x7f29f978f700) at pthread_create.c:463
#8  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 33 (Thread 0x7f2a7af31700 (LWP 6172)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f2b4a955fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f2b4a955f68, cond=0x7f2b4a955f90) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f2b4a955f90, mutex=0x7f2b4a955f68) at pthread_cond_wait.c:655
#3  0x00007f2b4a65f5f4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f2b4a65f639 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f2b591e56db in start_thread (arg=0x7f2a7af31700) at pthread_create.c:463
#6  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 32 (Thread 0x7f2a7d3b7700 (LWP 6153)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9efed3da0) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9efed3d50, cond=0x55b9efed3d78) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9efed3d78, mutex=0x55b9efed3d50) at pthread_cond_wait.c:655
#3  0x00007f2b26e3146b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f2b26e31197 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f2b591e56db in start_thread (arg=0x7f2a7d3b7700) at pthread_create.c:463
#6  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 31 (Thread 0x7f2aa97fa700 (LWP 6147)):
#0  0x00007f2b638e40b4 in __GI___libc_read (fd=56, buf=0x7f2aa97f985e, nbytes=10) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f2b3e610ff1 in pa_read () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#2  0x00007f2b470019fe in pa_mainloop_prepare () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f2b47002470 in pa_mainloop_iterate () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f2b47002530 in pa_mainloop_run () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f2b47010399 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f2b3e6402a8 in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#7  0x00007f2b591e56db in start_thread (arg=0x7f2aa97fa700) at pthread_create.c:463
#8  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 30 (Thread 0x7f2aa9ffb700 (LWP 6146)):
#0  0x00007f2b591ebed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f2aa9ffa5d0, expected=0, futex_word=0x7f2aa9ffa758) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f2aa9ffa670, mutex=0x7f2aa9ffa708, cond=0x7f2aa9ffa730) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f2aa9ffa730, mutex=0x7f2aa9ffa708, abstime=0x7f2aa9ffa670) at pthread_cond_wait.c:667
#3  0x00007f2b4e0bb652 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f2b4e08291e in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f2b4e05d52b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f2b4e059da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f2b4e07677b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f2b4e08e4d6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f2b4e08a5eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f2b591e56db in start_thread (arg=0x7f2aa9ffb700) at pthread_create.c:463
#11 0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 29 (Thread 0x7f2aaa7fc700 (LWP 6145)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9ef94ef48) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9ef94ee88, cond=0x55b9ef94ef20) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9ef94ef20, mutex=0x55b9ef94ee88) at pthread_cond_wait.c:655
#3  0x00007f2b4e814060 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f2b4e08df11 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f2b4e08a5eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f2b591e56db in start_thread (arg=0x7f2aaa7fc700) at pthread_create.c:463
#7  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 28 (Thread 0x7f2aab7fe700 (LWP 6144)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f2aab7fd738) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f2aab7fd6e8, cond=0x7f2aab7fd710) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f2aab7fd710, mutex=0x7f2aab7fd6e8) at pthread_cond_wait.c:655
#3  0x00007f2b4e082999 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f2b4e0829c7 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f2b4e05d4db in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f2b4e059da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f2b4e07677b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f2b4e08e4d6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f2b4e08a5eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f2b591e56db in start_thread (arg=0x7f2aab7fe700) at pthread_create.c:463
#11 0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 27 (Thread 0x7f2aaaffd700 (LWP 6143)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9ef9f9538) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9ef9f94e8, cond=0x55b9ef9f9510) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9ef9f9510, mutex=0x55b9ef9f94e8) at pthread_cond_wait.c:655
#3  0x00007f2b4e08cc95 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f2b4e08d177 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f2b4e08df11 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f2b4e08a5eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f2b591e56db in start_thread (arg=0x7f2aaaffd700) at pthread_create.c:463
#8  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 26 (Thread 0x7f2aabfff700 (LWP 6142)):
#0  0x00007f2b4506e570 in event_add () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#1  0x00007f2b4e05dbe5 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#2  0x00007f2b4e059da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#3  0x00007f2b4e07677b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f2b4d914978 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f2b4d914f2b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f2b4e08e588 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f2b4e08a5eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f2b591e56db in start_thread (arg=0x7f2aabfff700) at pthread_create.c:463
#9  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 25 (Thread 0x7f2accff9700 (LWP 6141)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f2accff8358) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f2accff8308, cond=0x7f2accff8330) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f2accff8330, mutex=0x7f2accff8308) at pthread_cond_wait.c:655
#3  0x00007f2b4e082999 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f2b4e0829c7 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f2b4e05d4db in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f2b4e059da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f2b4e07677b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f2b4d9148c8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f2b4d914f1b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f2b4e08e588 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f2b4e08a5eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f2b591e56db in start_thread (arg=0x7f2accff9700) at pthread_create.c:463
#13 0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 24 (Thread 0x7f2acd7fa700 (LWP 6140)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f2acd7f9358) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f2acd7f9308, cond=0x7f2acd7f9330) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f2acd7f9330, mutex=0x7f2acd7f9308) at pthread_cond_wait.c:655
#3  0x00007f2b4e082999 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f2b4e0829c7 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f2b4e05d4db in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f2b4e059da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f2b4e07677b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f2b4d914818 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f2b4d914f0b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f2b4e08e588 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f2b4e08a5eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f2b591e56db in start_thread (arg=0x7f2acd7fa700) at pthread_create.c:463
#13 0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7f2acdffb700 (LWP 6139)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f2acdffa358) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f2acdffa308, cond=0x7f2acdffa330) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f2acdffa330, mutex=0x7f2acdffa308) at pthread_cond_wait.c:655
#3  0x00007f2b4e082999 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f2b4e0829c7 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f2b4e05d4db in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f2b4e059da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f2b4e07677b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f2b4d914768 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f2b4d914efb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f2b4e08e588 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f2b4e08a5eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f2b591e56db in start_thread (arg=0x7f2acdffb700) at pthread_create.c:463
#13 0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7f2ace7fc700 (LWP 6138)):
#0  0x00007f2b63804db1 in transcmp (p1=0x7f2ace7fb0b0, p2=0x55b9ef365ae0) at dcigettext.c:290
#1  0x00007f2b638f16eb in __GI___tfind (key=key@entry=0x7f2ace7fb0b0, vrootp=vrootp@entry=0x7f2b63bc0c48 <root>, compar=compar@entry=0x7f2b63804da0 <transcmp>) at tsearch.c:388
#2  0x00007f2b638063ff in __dcigettext (domainname=0x7f2b63987d14 <_libc_intl_domainname> "libc", msgid1=0x7f2b6398818a "Bad file descriptor", msgid2=msgid2@entry=0x0, plural=plural@entry=0, n=n@entry=0, category=category@entry=5) at dcigettext.c:570
#3  0x00007f2b63804d7f in __GI___dcgettext (domainname=<optimized out>, msgid=<optimized out>, category=category@entry=5) at dcgettext.c:47
#4  0x00007f2b63871b28 in __GI___strerror_r (errnum=errnum@entry=9, buf=buf@entry=0x0, buflen=buflen@entry=0) at _strerror.c:71
#5  0x00007f2b63871a4f in strerror (errnum=9) at strerror.c:31
#6  0x00007f2b45078b31 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#7  0x00007f2b4507a46c in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007f2b45070114 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#9  0x00007f2b4e05dab9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f2b4e059da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f2b4e07677b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f2b4d9146b8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007f2b4d914eeb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007f2b4e08e588 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007f2b4e08a5eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#16 0x00007f2b591e56db in start_thread (arg=0x7f2ace7fc700) at pthread_create.c:463
#17 0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7f2aceffd700 (LWP 6137)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f2aceffc358) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f2aceffc308, cond=0x7f2aceffc330) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f2aceffc330, mutex=0x7f2aceffc308) at pthread_cond_wait.c:655
#3  0x00007f2b4e082999 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f2b4e0829c7 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f2b4e05d4db in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f2b4e059da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f2b4e07677b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f2b4d914608 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f2b4d914edb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f2b4e08e588 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f2b4e08a5eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f2b591e56db in start_thread (arg=0x7f2aceffd700) at pthread_create.c:463
#13 0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7f2acf7fe700 (LWP 6136)):
#0  0x00007f2b591ebed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f2acf7fd7e0, expected=0, futex_word=0x7f2ac8004d20) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f2acf7fd880, mutex=0x7f2ac8004cd0, cond=0x7f2ac8004cf8) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f2ac8004cf8, mutex=0x7f2ac8004cd0, abstime=0x7f2acf7fd880) at pthread_cond_wait.c:667
#3  0x00007f2b4e0bb652 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f2b4e091799 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f2b4e091cfb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f2b4e08a5eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f2b591e56db in start_thread (arg=0x7f2acf7fe700) at pthread_create.c:463
#8  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f2acffff700 (LWP 6135)):
#0  0x00007f2b591ebed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f2acfffe7e0, expected=0, futex_word=0x7f2ac8004d24) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f2acfffe880, mutex=0x7f2ac8004cd0, cond=0x7f2ac8004cf8) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f2ac8004cf8, mutex=0x7f2ac8004cd0, abstime=0x7f2acfffe880) at pthread_cond_wait.c:667
#3  0x00007f2b4e0bb652 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f2b4e091799 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f2b4e091cfb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f2b4e08a5eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f2b591e56db in start_thread (arg=0x7f2acffff700) at pthread_create.c:463
#8  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f2adcc5e700 (LWP 6134)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f2adcc5d738) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f2adcc5d6e8, cond=0x7f2adcc5d710) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f2adcc5d710, mutex=0x7f2adcc5d6e8) at pthread_cond_wait.c:655
#3  0x00007f2b4e082999 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f2b4e0829c7 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f2b4e05d4db in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f2b4e059da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f2b4e07677b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f2b4e08e4d6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f2b4e08a5eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f2b591e56db in start_thread (arg=0x7f2adcc5e700) at pthread_create.c:463
#11 0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f2add66d700 (LWP 6133)):
#0  __lll_unlock_wake_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:341
#1  0x00007f2b6390650c in _IO_acquire_lock_clear_flags2_fct (p=<synthetic pointer>) at ../libio/libioP.h:807
#2  ___fprintf_chk (fp=0x7f2b63bc0680 <_IO_2_1_stderr_>, flag=1, format=<optimized out>) at fprintf_chk.c:30
#3  0x00007f2b450789ad in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f2b45078b44 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f2b4507a46c in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f2b45070114 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#7  0x00007f2b4e05dab9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f2b4e059da8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f2b4e07677b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f2b4e08e4d6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f2b4e08a5eb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f2b591e56db in start_thread (arg=0x7f2add66d700) at pthread_create.c:463
#13 0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f2adf5f3700 (LWP 6126)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9ef94e650) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9ef94e600, cond=0x55b9ef94e628) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9ef94e628, mutex=0x55b9ef94e600) at pthread_cond_wait.c:655
#3  0x00007f2b63ffb59b in QWaitCondition::wait(QMutex*, unsigned long) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2b63ff3c0b in QSemaphore::acquire(int) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2ae47cb80c in ?? () from /usr/lib/x86_64-linux-gnu/qt5/plugins/texttospeech/libqttexttospeech_flite.so
#6  0x00007f2b63ffa16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2b591e56db in start_thread (arg=0x7f2adf5f3700) at pthread_create.c:463
#8  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f2ae584c700 (LWP 6123)):
#0  0x00007f2b5758d312 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f2b5758f8d3 in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2b5759036b in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2b5759054c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2b6423190b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2b641d69ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2b63ff522a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2b63ffa16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2b591e56db in start_thread (arg=0x7f2ae584c700) at pthread_create.c:463
#9  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f2b06ba0700 (LWP 6118)):
#0  0x00007f2b638e8bf9 in __GI___poll (fds=0x7f2aec026460, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f2b57590439 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2b5759054c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2b6423190b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2b641d69ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2b63ff522a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2b63ffa16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2b591e56db in start_thread (arg=0x7f2b06ba0700) at pthread_create.c:463
#8  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f2b073a1700 (LWP 6116)):
#0  0x00007f2b638e8bf9 in __GI___poll (fds=0x7f2ae8003ce0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f2b57590439 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2b5759054c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2b6423190b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f2b641d69ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2b63ff522a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2b63ffa16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2b591e56db in start_thread (arg=0x7f2b073a1700) at pthread_create.c:463
#8  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f2b07fff700 (LWP 6115)):
#0  0x00007f2b638e40b4 in __GI___libc_read (fd=12, buf=0x7f2b07ffe810, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f2b575d4a00 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2b5758ff27 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2b575903e0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2b5759054c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f2b6423190b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2b641d69ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2b63ff522a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2b63ffa16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f2b591e56db in start_thread (arg=0x7f2b07fff700) at pthread_create.c:463
#10 0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f2b195f0700 (LWP 6113)):
#0  0x00007f2b638e40b4 in __GI___libc_read (fd=10, buf=0x7f2b195ef7e0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f2b575d4a00 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f2b5758ff27 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f2b575903e0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f2b5759054c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f2b6423190b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f2b641d69ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f2b63ff522a in QThread::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f2b6282ed45 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f2b63ffa16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f2b591e56db in start_thread (arg=0x7f2b195f0700) at pthread_create.c:463
#11 0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f2b19ffb700 (LWP 6112)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9ef5b3890) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9ef5b3840, cond=0x55b9ef5b3868) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9ef5b3868, mutex=0x55b9ef5b3840) at pthread_cond_wait.c:655
#3  0x00007f2b26e3146b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f2b26e31197 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f2b591e56db in start_thread (arg=0x7f2b19ffb700) at pthread_create.c:463
#6  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f2b1a7fc700 (LWP 6111)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9ef4626f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9ef4626a8, cond=0x55b9ef4626d0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9ef4626d0, mutex=0x55b9ef4626a8) at pthread_cond_wait.c:655
#3  0x00007f2b26e3146b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f2b26e31197 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f2b591e56db in start_thread (arg=0x7f2b1a7fc700) at pthread_create.c:463
#6  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f2b1affd700 (LWP 6110)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9ef4626f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9ef4626a8, cond=0x55b9ef4626d0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9ef4626d0, mutex=0x55b9ef4626a8) at pthread_cond_wait.c:655
#3  0x00007f2b26e3146b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f2b26e31197 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f2b591e56db in start_thread (arg=0x7f2b1affd700) at pthread_create.c:463
#6  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f2b1b7fe700 (LWP 6109)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9ef4625ec) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9ef462598, cond=0x55b9ef4625c0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9ef4625c0, mutex=0x55b9ef462598) at pthread_cond_wait.c:655
#3  0x00007f2b26e3146b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f2b26e31197 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f2b591e56db in start_thread (arg=0x7f2b1b7fe700) at pthread_create.c:463
#6  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f2b1bfff700 (LWP 6108)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9ef4625ec) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9ef462598, cond=0x55b9ef4625c0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9ef4625c0, mutex=0x55b9ef462598) at pthread_cond_wait.c:655
#3  0x00007f2b26e3146b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f2b26e31197 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f2b591e56db in start_thread (arg=0x7f2b1bfff700) at pthread_create.c:463
#6  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f2b20b82700 (LWP 6107)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9ef4625e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9ef462598, cond=0x55b9ef4625c0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9ef4625c0, mutex=0x55b9ef462598) at pthread_cond_wait.c:655
#3  0x00007f2b26e3146b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f2b26e31197 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f2b591e56db in start_thread (arg=0x7f2b20b82700) at pthread_create.c:463
#6  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f2b21383700 (LWP 6106)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9ef323f38) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9ef323ee8, cond=0x55b9ef323f10) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9ef323f10, mutex=0x55b9ef323ee8) at pthread_cond_wait.c:655
#3  0x00007f2b26e3146b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f2b26e31197 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f2b591e56db in start_thread (arg=0x7f2b21383700) at pthread_create.c:463
#6  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f2b221ac700 (LWP 6105)):
#0  0x00007f2b591eb9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b9ef461b30) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55b9ef461ae0, cond=0x55b9ef461b08) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55b9ef461b08, mutex=0x55b9ef461ae0) at pthread_cond_wait.c:655
#3  0x00007f2b26e3146b in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#4  0x00007f2b26e31197 in ?? () from /usr/lib/x86_64-linux-gnu/dri/radeonsi_dri.so
#5  0x00007f2b591e56db in start_thread (arg=0x7f2b221ac700) at pthread_create.c:463
#6  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f2b2e48c700 (LWP 6103)):
#0  0x00007f2b638e8bf9 in __GI___poll (fds=0x7f2b2e48b928, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f2b569be747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f2b569c036a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f2b301872a9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f2b63ffa16d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f2b591e56db in start_thread (arg=0x7f2b2e48c700) at pthread_create.c:463
#6  0x00007f2b638f588f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f2b66816b80 (LWP 6102)):
[KCrash Handler]
#6  0x00007f2b64f9002a in QWidgetPrivate::reparentFocusWidgets(QWidget*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#7  0x00007f2b64f96368 in QWidget::setParent(QWidget*, QFlags<Qt::WindowType>) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#8  0x00007f2b64f96b74 in QWidgetPrivate::init(QWidget*, QFlags<Qt::WindowType>) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#9  0x00007f2b651014db in QStatusBar::QStatusBar(QWidget*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#10 0x00007f2b650a7512 in QMainWindow::statusBar() const () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#11 0x00007f2b660894b9 in KMMainWin::displayStatusMessage(QString const&) () from /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#12 0x00007f2b642076cf in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f2b5aad3f32 in KPIM::BroadcastStatus::statusMsg(QString const&) () from /usr/lib/x86_64-linux-gnu/libKF5Libkdepim.so.5abi2
#14 0x00007f2b660bc9d4 in KMMainWidget::showMessageActivities(QString const&) () from /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#15 0x00007f2b660c05f1 in KMMainWidget::itemsFetchDone(KJob*) () from /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#16 0x00007f2b642076cf in QMetaObject::activate(QObject*, int, int, void**) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f2b65682fdc in KJob::result(KJob*, KJob::QPrivateSignal) () from /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#18 0x00007f2b65683b11 in KJob::finishJob(bool) () from /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#19 0x00007f2b65683b72 in KJob::kill(KJob::KillVerbosity) () from /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#20 0x00007f2b5d8b9021 in Akonadi::Session::clear() () from /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi1
#21 0x00007f2b5d8b90d7 in Akonadi::Session::~Session() () from /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi1
#22 0x00007f2b5d8b90f9 in Akonadi::Session::~Session() () from /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi1
#23 0x00007f2b6420519b in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f2b6420e9cb in QObject::~QObject() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f2b60677019 in ?? () from /usr/lib/x86_64-linux-gnu/libKF5MessageViewer.so.5abi4
#26 0x00007f2b6420519b in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007f2b64f90d4c in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f2b60668879 in MessageViewer::Viewer::~Viewer() () from /usr/lib/x86_64-linux-gnu/libKF5MessageViewer.so.5abi4
#29 0x00007f2b6420519b in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f2b64f90d4c in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007f2b6608ddf9 in KMReaderWin::~KMReaderWin() () from /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#32 0x00007f2b6420519b in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f2b64f90d4c in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007f2b650ff639 in QSplitter::~QSplitter() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#35 0x00007f2b6420519b in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007f2b64f90d4c in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#37 0x00007f2b650ff639 in QSplitter::~QSplitter() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#38 0x00007f2b660bf1f3 in KMMainWidget::deleteWidgets() () from /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#39 0x00007f2b660d8d41 in KMMainWidget::destruct() () from /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#40 0x00007f2b660d8f1f in KMMainWidget::~KMMainWidget() () from /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#41 0x00007f2b660d90f9 in KMMainWidget::~KMMainWidget() () from /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#42 0x00007f2b6420519b in QObjectPrivate::deleteChildren() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#43 0x00007f2b64f90d4c in QWidget::~QWidget() () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#44 0x00007f2b632e673d in KMainWindow::~KMainWindow() () from /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#45 0x00007f2b6608ad6a in KMMainWin::~KMMainWin() () from /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#46 0x00007f2b6608add9 in KMMainWin::~KMMainWin() () from /usr/lib/x86_64-linux-gnu/libkmailprivate.so.5
#47 0x00007f2b64208140 in QObject::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#48 0x00007f2b64f95743 in QWidget::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#49 0x00007f2b650a8c4b in QMainWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#50 0x00007f2b632e8b87 in KMainWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#51 0x00007f2b6332d9e5 in KXmlGuiWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#52 0x00007f2b64f5682c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#53 0x00007f2b64f5e0f4 in QApplication::notify(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#54 0x00007f2b641d89a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#55 0x00007f2b641db11d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#56 0x00007f2b642322c3 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#57 0x00007f2b57590287 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#58 0x00007f2b575904c0 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#59 0x00007f2b5759054c in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#60 0x00007f2b642318ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#61 0x00007f2b641d69ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#62 0x00007f2b641dfa84 in QCoreApplication::exec() () from /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#63 0x000055b9ee3dc7cd in ?? ()
#64 0x00007f2b637f5b97 in __libc_start_main (main=0x55b9ee3db840, argc=1, argv=0x7ffc9634c178, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffc9634c168) at ../csu/libc-start.c:310
#65 0x000055b9ee3dc8fa in _start ()

Possible duplicates by query: bug 224655.

Reported using DrKonqi