Application: kmail (5.5.2)

Qt Version: 5.6.2
Frameworks Version: 5.32.0
Operating System: Linux 4.4.74-18.20-default x86_64
Distribution: "openSUSE Leap 42.3"

-- Information about the crash:
I attempted to move a subfolder up a level.  Kmail crashed and had to be restarted.  The folder was created but is empty.  Subsequently every folder that I attempted to open thereafter deleted the emails in that folder.,

The crash can be reproduced sometimes.

-- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7ff95563f940 (LWP 2127))]

Thread 25 (Thread 0x7ff8a5bdc700 (LWP 2201)):
#0  0x00007ff9484f80bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ff93f659189 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007ff93f65994d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007ff93f65a170 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007ff93f656ece in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#6  0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 24 (Thread 0x7ff8a63dd700 (LWP 2200)):
#0  0x00007ff9484f80bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ff93f659189 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007ff93f65994d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007ff93f65a170 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007ff93f656ece in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#6  0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 23 (Thread 0x7ff8ad0ad700 (LWP 2191)):
#0  0x00007ff9484f80bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ff93ae5193b in  () at /usr/lib64/libQt5Script.so.5
#2  0x00007ff93ae51969 in  () at /usr/lib64/libQt5Script.so.5
#3  0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#4  0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 22 (Thread 0x7ff8cd7fa700 (LWP 2165)):
#0  0x00007ff9484f80bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ff93f4b4d10 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007ff93f4a27bb in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007ff93f4a2a35 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007ff93f49f327 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007ff940d7a1ca in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007ff940d7a4e1 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007ff940d7a5d2 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007ff93f642c12 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007ff93f62e6b5 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007ff93f65a4f0 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007ff93f656ece in  () at /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#13 0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 21 (Thread 0x7ff8cdffb700 (LWP 2164)):
#0  0x00007ff9484f80bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ff93f659189 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007ff93f65994d in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007ff93f65a170 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007ff93f656ece in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#6  0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 20 (Thread 0x7ff8ce7fc700 (LWP 2163)):
#0  0x00007ff95277920d in poll () at /lib64/libc.so.6
#1  0x00007ff937c910a1 in  () at /usr/lib64/libpulse.so.0
#2  0x00007ff937c8276c in pa_mainloop_poll () at /usr/lib64/libpulse.so.0
#3  0x00007ff937c82dde in pa_mainloop_iterate () at /usr/lib64/libpulse.so.0
#4  0x00007ff937c82e90 in pa_mainloop_run () at /usr/lib64/libpulse.so.0
#5  0x00007ff937c91006 in  () at /usr/lib64/libpulse.so.0
#6  0x00007ff9329ef408 in  () at /usr/lib64/pulseaudio/libpulsecommon-9.0.so
#7  0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#8  0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 19 (Thread 0x7ff8ceffd700 (LWP 2162)):
#0  0x00007ff9526e182b in vfprintf () at /lib64/libc.so.6
#1  0x00007ff95278f775 in __vsnprintf_chk () at /lib64/libc.so.6
#2  0x00007ff9366cf14a in evutil_vsnprintf () at /usr/lib64/libevent-2.0.so.5
#3  0x00007ff9366cf1e2 in evutil_snprintf () at /usr/lib64/libevent-2.0.so.5
#4  0x00007ff9366cdf8d in  () at /usr/lib64/libevent-2.0.so.5
#5  0x00007ff9366ce1b7 in event_warn () at /usr/lib64/libevent-2.0.so.5
#6  0x00007ff9366d2468 in  () at /usr/lib64/libevent-2.0.so.5
#7  0x00007ff9366be477 in event_base_loop () at /usr/lib64/libevent-2.0.so.5
#8  0x00007ff93f60f8e1 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007ff93f642c12 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007ff93f62e6b5 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007ff93f65a4f0 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007ff93f656ece in  () at /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#14 0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 18 (Thread 0x7ff8cf7fe700 (LWP 2161)):
#0  0x00007ff9484f80bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ff93f64fcbf in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007ff93f64fd94 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007ff93f63262b in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007ff93f642c12 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007ff93f62e6b5 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007ff93f65a4f0 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007ff93f656ece in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#9  0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 17 (Thread 0x7ff8cffff700 (LWP 2160)):
#0  0x00007ff9484f80bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ff93f64fcbf in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007ff93f64fd94 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007ff93f63262b in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007ff93f642c12 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007ff93f62e6b5 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007ff93f65a4f0 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007ff93f656ece in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#9  0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 16 (Thread 0x7ff8f0ff9700 (LWP 2159)):
#0  0x00007ff9484f80bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ff93f055979 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007ff93f65a170 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007ff93f656ece in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#5  0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 15 (Thread 0x7ff8f17fa700 (LWP 2158)):
#0  0x00007ff9484f80bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ff93f64fcbf in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007ff93f64fd94 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007ff93f63262b in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007ff93f642c12 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007ff93f62e6b5 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007ff93f65a4f0 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007ff93f656ece in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#9  0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 14 (Thread 0x7ff8f1ffb700 (LWP 2157)):
#0  0x00007ff95278deab in __lll_lock_wait_private () at /lib64/libc.so.6
#1  0x00007ff95278fa46 in __fprintf_chk () at /lib64/libc.so.6
#2  0x00007ff9366cdfdf in  () at /usr/lib64/libevent-2.0.so.5
#3  0x00007ff9366ce1b7 in event_warn () at /usr/lib64/libevent-2.0.so.5
#4  0x00007ff9366d2468 in  () at /usr/lib64/libevent-2.0.so.5
#5  0x00007ff9366be477 in event_base_loop () at /usr/lib64/libevent-2.0.so.5
#6  0x00007ff93f60f8e1 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007ff93f642c12 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007ff93f62e6b5 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007ff93ece7c95 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007ff93ece7dab in  () at /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007ff93f65a4f0 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007ff93f656ece in  () at /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#14 0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 13 (Thread 0x7ff8f27fc700 (LWP 2156)):
#0  0x00007ff9526e182b in vfprintf () at /lib64/libc.so.6
#1  0x00007ff95278f775 in __vsnprintf_chk () at /lib64/libc.so.6
#2  0x00007ff9366cf14a in evutil_vsnprintf () at /usr/lib64/libevent-2.0.so.5
#3  0x00007ff9366cf1e2 in evutil_snprintf () at /usr/lib64/libevent-2.0.so.5
#4  0x00007ff9366cdf8d in  () at /usr/lib64/libevent-2.0.so.5
#5  0x00007ff9366ce1b7 in event_warn () at /usr/lib64/libevent-2.0.so.5
#6  0x00007ff9366d2468 in  () at /usr/lib64/libevent-2.0.so.5
#7  0x00007ff9366be477 in event_base_loop () at /usr/lib64/libevent-2.0.so.5
#8  0x00007ff93f60f84e in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007ff93f642c12 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007ff93f62e6b5 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007ff93ece7c15 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007ff93ece7e0b in  () at /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007ff93f65a4f0 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#14 0x00007ff93f656ece in  () at /usr/lib64/libQt5WebEngineCore.so.5
#15 0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#16 0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 12 (Thread 0x7ff8f2ffd700 (LWP 2155)):
#0  0x00007ff9484f80bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ff93f64fcbf in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007ff93f64fd94 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007ff93f63262b in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007ff93f642c12 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007ff93f62e6b5 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007ff93ece7b95 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007ff93ece7dfb in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007ff93f65a4f0 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007ff93f656ece in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#11 0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 11 (Thread 0x7ff8f37fe700 (LWP 2154)):
#0  0x00007ff9484f80bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ff93f64fcbf in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007ff93f64fd94 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007ff93f63262b in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007ff93f642c12 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007ff93f62e6b5 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007ff93ece7b15 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007ff93ece7deb in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007ff93f65a4f0 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007ff93f656ece in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#11 0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 10 (Thread 0x7ff8f3fff700 (LWP 2153)):
#0  0x00007ff95278deab in __lll_lock_wait_private () at /lib64/libc.so.6
#1  0x00007ff95278fa46 in __fprintf_chk () at /lib64/libc.so.6
#2  0x00007ff9366cdfdf in  () at /usr/lib64/libevent-2.0.so.5
#3  0x00007ff9366ce1b7 in event_warn () at /usr/lib64/libevent-2.0.so.5
#4  0x00007ff9366d2468 in  () at /usr/lib64/libevent-2.0.so.5
#5  0x00007ff9366be477 in event_base_loop () at /usr/lib64/libevent-2.0.so.5
#6  0x00007ff93f60f8e1 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007ff93f642c12 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007ff93f62e6b5 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007ff93ece7a95 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007ff93ece7ddb in  () at /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007ff93f65a4f0 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#12 0x00007ff93f656ece in  () at /usr/lib64/libQt5WebEngineCore.so.5
#13 0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#14 0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 9 (Thread 0x7ff908ea1700 (LWP 2152)):
#0  0x00007ff9484f80bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ff93f64fcbf in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007ff93f64fd94 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007ff93f63262b in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007ff93f642c12 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007ff93f62e6b5 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007ff93ece7a15 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007ff93ece7dcb in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007ff93f65a4f0 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007ff93f656ece in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#11 0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 8 (Thread 0x7ff90a6a4700 (LWP 2149)):
#0  0x00007ff9484f80bf in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
#1  0x00007ff93f64fcbf in  () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007ff93f64fd94 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x00007ff93f63262b in  () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007ff93f642c12 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007ff93f62e6b5 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#6  0x00007ff93f65a4f0 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007ff93f656ece in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#9  0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 7 (Thread 0x7ff90b0b2700 (LWP 2148)):
#0  0x00007ff95278deab in __lll_lock_wait_private () at /lib64/libc.so.6
#1  0x00007ff95278fa46 in __fprintf_chk () at /lib64/libc.so.6
#2  0x00007ff9366cdfdf in  () at /usr/lib64/libevent-2.0.so.5
#3  0x00007ff9366ce1b7 in event_warn () at /usr/lib64/libevent-2.0.so.5
#4  0x00007ff9366d2468 in  () at /usr/lib64/libevent-2.0.so.5
#5  0x00007ff9366be477 in event_base_loop () at /usr/lib64/libevent-2.0.so.5
#6  0x00007ff93f60f84e in  () at /usr/lib64/libQt5WebEngineCore.so.5
#7  0x00007ff93f642c12 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#8  0x00007ff93f62e6b5 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#9  0x00007ff93f65a4f0 in  () at /usr/lib64/libQt5WebEngineCore.so.5
#10 0x00007ff93f656ece in  () at /usr/lib64/libQt5WebEngineCore.so.5
#11 0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#12 0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 6 (Thread 0x7ff91e3b0700 (LWP 2133)):
#0  0x00007ff95277920d in poll () at /lib64/libc.so.6
#1  0x00007ff947cd9314 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff947cd942c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff9530861ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007ff953033bfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007ff952e6ef5a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007ff952e73a29 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#8  0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 5 (Thread 0x7ff91ebb1700 (LWP 2132)):
#0  0x00007ff947d1a8b4 in g_mutex_unlock () at /usr/lib64/libglib-2.0.so.0
#1  0x00007ff947cd9309 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff947cd942c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff9530861ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007ff953033bfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007ff952e6ef5a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007ff952e73a29 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#8  0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 4 (Thread 0x7ff91f5ef700 (LWP 2131)):
#0  0x00007ff95277920d in poll () at /lib64/libc.so.6
#1  0x00007ff947cd9314 in  () at /usr/lib64/libglib-2.0.so.0
#2  0x00007ff947cd942c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff9530861ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#4  0x00007ff953033bfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#5  0x00007ff952e6ef5a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#6  0x00007ff952e73a29 in  () at /usr/lib64/libQt5Core.so.5
#7  0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#8  0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 3 (Thread 0x7ff924dd9700 (LWP 2130)):
#0  0x00007ff952e72a52 in  () at /usr/lib64/libQt5Core.so.5
#1  0x00007ff9530867b1 in  () at /usr/lib64/libQt5Core.so.5
#2  0x00007ff947cd8da1 in g_main_context_check () at /usr/lib64/libglib-2.0.so.0
#3  0x00007ff947cd92a8 in  () at /usr/lib64/libglib-2.0.so.0
#4  0x00007ff947cd942c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#5  0x00007ff9530861ab in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#6  0x00007ff953033bfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#7  0x00007ff952e6ef5a in QThread::exec() () at /usr/lib64/libQt5Core.so.5
#8  0x00007ff951718295 in  () at /usr/lib64/libQt5DBus.so.5
#9  0x00007ff952e73a29 in  () at /usr/lib64/libQt5Core.so.5
#10 0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#11 0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 2 (Thread 0x7ff92cdaa700 (LWP 2129)):
#0  0x00007ff95277920d in poll () at /lib64/libc.so.6
#1  0x00007ff9459cb3e2 in  () at /usr/lib64/libxcb.so.1
#2  0x00007ff9459ccfcf in xcb_wait_for_event () at /usr/lib64/libxcb.so.1
#3  0x00007ff92e88d0d9 in  () at /usr/lib64/libQt5XcbQpa.so.5
#4  0x00007ff952e73a29 in  () at /usr/lib64/libQt5Core.so.5
#5  0x00007ff9484f3744 in start_thread () at /lib64/libpthread.so.0
#6  0x00007ff952781aad in clone () at /lib64/libc.so.6

Thread 1 (Thread 0x7ff95563f940 (LWP 2127)):
[KCrash Handler]
#6  0x00007ff952ffe6b2 in QSortFilterProxyModel::parent(QModelIndex const&) const () at /usr/lib64/libQt5Core.so.5
#7  0x00007ff952ffa7b7 in QIdentityProxyModel::parent(QModelIndex const&) const () at /usr/lib64/libQt5Core.so.5
#8  0x00007ff952ffa7b7 in QIdentityProxyModel::parent(QModelIndex const&) const () at /usr/lib64/libQt5Core.so.5
#9  0x00007ff94c43b1dc in KExtraColumnsProxyModel::parent(QModelIndex const&) const () at /usr/lib64/libKF5ItemModels.so.5
#10 0x00007ff9530035ec in  () at /usr/lib64/libQt5Core.so.5
#11 0x00007ff9530039f2 in  () at /usr/lib64/libQt5Core.so.5
#12 0x00007ff953007e53 in  () at /usr/lib64/libQt5Core.so.5
#13 0x00007ff95305f7d1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#14 0x00007ff9530d61b6 in QAbstractItemModel::layoutChanged(QList<QPersistentModelIndex> const&, QAbstractItemModel::LayoutChangeHint) () at /usr/lib64/libQt5Core.so.5
#15 0x00007ff94c43a934 in  () at /usr/lib64/libKF5ItemModels.so.5
#16 0x00007ff94c43a9fa in  () at /usr/lib64/libKF5ItemModels.so.5
#17 0x00007ff95305f7d1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#18 0x00007ff9530d61b6 in QAbstractItemModel::layoutChanged(QList<QPersistentModelIndex> const&, QAbstractItemModel::LayoutChangeHint) () at /usr/lib64/libQt5Core.so.5
#19 0x00007ff952ffbb91 in  () at /usr/lib64/libQt5Core.so.5
#20 0x00007ff952ffc183 in  () at /usr/lib64/libQt5Core.so.5
#21 0x00007ff95305f7d1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#22 0x00007ff9530d61b6 in QAbstractItemModel::layoutChanged(QList<QPersistentModelIndex> const&, QAbstractItemModel::LayoutChangeHint) () at /usr/lib64/libQt5Core.so.5
#23 0x00007ff953003d4d in  () at /usr/lib64/libQt5Core.so.5
#24 0x00007ff953007f74 in  () at /usr/lib64/libQt5Core.so.5
#25 0x00007ff95305f7d1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#26 0x00007ff9530d6594 in QAbstractItemModel::rowsMoved(QModelIndex const&, int, int, QModelIndex const&, int, QAbstractItemModel::QPrivateSignal) () at /usr/lib64/libQt5Core.so.5
#27 0x00007ff952fe4a86 in QAbstractItemModel::endMoveRows() () at /usr/lib64/libQt5Core.so.5
#28 0x00007ff94c7eeb8d in  () at /usr/lib64/libKF5AkonadiCore.so.5
#29 0x00007ff94c7e0598 in  () at /usr/lib64/libKF5AkonadiCore.so.5
#30 0x00007ff95305f7d1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#31 0x00007ff94c72e9af in Akonadi::Monitor::collectionMoved(Akonadi::Collection const&, Akonadi::Collection const&, Akonadi::Collection const&) () at /usr/lib64/libKF5AkonadiCore.so.5
#32 0x00007ff94c73513e in Akonadi::MonitorPrivate::emitCollectionNotification(Akonadi::Protocol::CollectionChangeNotification const&, Akonadi::Collection const&, Akonadi::Collection const&, Akonadi::Collection const&) () at /usr/lib64/libKF5AkonadiCore.so.5
#33 0x00007ff94c73a970 in Akonadi::MonitorPrivate::emitNotification(Akonadi::Protocol::ChangeNotification const&) () at /usr/lib64/libKF5AkonadiCore.so.5
#34 0x00007ff94c6ecc21 in  () at /usr/lib64/libKF5AkonadiCore.so.5
#35 0x00007ff94c73877a in Akonadi::MonitorPrivate::flushPipeline() () at /usr/lib64/libKF5AkonadiCore.so.5
#36 0x00007ff94c738989 in Akonadi::MonitorPrivate::dataAvailable() () at /usr/lib64/libKF5AkonadiCore.so.5
#37 0x00007ff95305f7d1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#38 0x00007ff94c6e050f in  () at /usr/lib64/libKF5AkonadiCore.so.5
#39 0x00007ff94c712994 in  () at /usr/lib64/libKF5AkonadiCore.so.5
#40 0x00007ff95305f7d1 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib64/libQt5Core.so.5
#41 0x00007ff954483cf2 in KJob::result(KJob*, KJob::QPrivateSignal) () at /usr/lib64/libKF5CoreAddons.so.5
#42 0x00007ff954484a1f in KJob::finishJob(bool) () at /usr/lib64/libKF5CoreAddons.so.5
#43 0x00007ff94c7ab2f9 in  () at /usr/lib64/libKF5AkonadiCore.so.5
#44 0x00007ff953060e26 in QObject::event(QEvent*) () at /usr/lib64/libQt5Core.so.5
#45 0x00007ff953d3628c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#46 0x00007ff953d3a8ea in QApplication::notify(QObject*, QEvent*) () at /usr/lib64/libQt5Widgets.so.5
#47 0x00007ff953035be5 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib64/libQt5Core.so.5
#48 0x00007ff9530379ca in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib64/libQt5Core.so.5
#49 0x00007ff953086b03 in  () at /usr/lib64/libQt5Core.so.5
#50 0x00007ff947cd9134 in g_main_context_dispatch () at /usr/lib64/libglib-2.0.so.0
#51 0x00007ff947cd9388 in  () at /usr/lib64/libglib-2.0.so.0
#52 0x00007ff947cd942c in g_main_context_iteration () at /usr/lib64/libglib-2.0.so.0
#53 0x00007ff95308618c in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#54 0x00007ff953033bfb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib64/libQt5Core.so.5
#55 0x00007ff95303bae6 in QCoreApplication::exec() () at /usr/lib64/libQt5Core.so.5
#56 0x00000000004039cd in  ()
#57 0x00007ff9526b86e5 in __libc_start_main () at /lib64/libc.so.6
#58 0x0000000000403ba9 in _start ()

Possible duplicates by query: bug 374462.

Reported using DrKonqi