Bug 399200

Summary: Kmail crash by HTML eMail
Product: [Applications] kmail2 Reporter: Johann Streitwieser <Johann.Streitwieser>
Component: generalAssignee: kdepim bugs <kdepim-bugs>
Status: RESOLVED DOWNSTREAM    
Severity: crash CC: montel
Priority: NOR Keywords: drkonqi
Version First Reported In: 5.7.3   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Johann Streitwieser 2018-09-29 07:12:08 UTC 
Application: kmail (5.7.3)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 4.15.0-34-generic x86_64
Distribution: Ubuntu 18.04.1 LTS

-- Information about the crash:
- What I was doing when the application crashed:
Open an E-Mail in HTML view but with out loading picures. Afterwards I press the link to load all picures now Kmail chrashes (always)!
I use kubuntu 18.0.1

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 0x7f515841fb80 (LWP 7357))]

Thread 26 (Thread 0x7f508044f700 (LWP 7418)):
#0  0x00007f514adf59f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f513c55ffb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f514adf59f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f513c55ff68, cond=0x7f513c55ff90) at pthread_cond_wait.c:502
#2  0x00007f514adf59f3 in __pthread_cond_wait (cond=0x7f513c55ff90, mutex=0x7f513c55ff68) at pthread_cond_wait.c:655
#3  0x00007f513c2695f4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f513c269639 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f514adef6db in start_thread (arg=0x7f508044f700) at pthread_create.c:463
#6  0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 25 (Thread 0x7f50a9ffb700 (LWP 7392)):
#0  0x00007f51554ee0b4 in __GI___libc_read (fd=56, buf=0x7f50a9ffa85e, nbytes=10) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f513021aff1 in pa_read () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#2  0x00007f5138c0b9fe in pa_mainloop_prepare () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f5138c0c470 in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f5138c0c530 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f5138c1a399 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f513024a2a8 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#7  0x00007f514adef6db in start_thread (arg=0x7f50a9ffb700) at pthread_create.c:463
#8  0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 24 (Thread 0x7f50aa7fc700 (LWP 7391)):
#0  0x00007f515550e6ac in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f5155510474 in ___fprintf_chk (fp=0x7f51557cb8b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f5136c9a6a8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f5136c829ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f5136c82b44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f5136c8446c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f5136c7a114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f513fc67b0d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f513fc63da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f513fc8077b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f513fc984d6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f513fc945eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f514adef6db in start_thread (arg=0x7f50aa7fc700) at pthread_create.c:463
#12 0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7f50aaffd700 (LWP 7390)):
#0  0x00007f511c46e02d in  () at /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#1  0x00007f511c46ea50 in nouveau_pushbuf_kick () at /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#2  0x00007f511ce31ef6 in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#3  0x00007f511cad1821 in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#4  0x00007f51405c8dff in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f514055cea3 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f51404e2f71 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f5140510ffd in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f514057a42a in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f51404cf21a in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f5142eabc53 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f5142eaf700 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f5142e2e08c in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007f5142ea9662 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007f5142ea971e in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007f513fcc0a83 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#16 0x00007f513fc64a00 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#17 0x00007f513fc66058 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#18 0x00007f513fc663eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#19 0x00007f513fc67491 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#20 0x00007f513fc63da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#21 0x00007f513fc8077b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#22 0x00007f513fc984d6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#23 0x00007f513fc945eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#24 0x00007f514adef6db in start_thread (arg=0x7f50aaffd700) at pthread_create.c:463
#25 0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7f50ab7fe700 (LWP 7389)):
#0  0x00007f514adf5ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f50ab7fd5d0, expected=0, futex_word=0x7f50ab7fd758) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f514adf5ed9 in __pthread_cond_wait_common (abstime=0x7f50ab7fd670, mutex=0x7f50ab7fd708, cond=0x7f50ab7fd730) at pthread_cond_wait.c:533
#2  0x00007f514adf5ed9 in __pthread_cond_timedwait (cond=0x7f50ab7fd730, mutex=0x7f50ab7fd708, abstime=0x7f50ab7fd670) at pthread_cond_wait.c:667
#3  0x00007f513fcc5652 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f513fc8c91e in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f513fc6752b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f513fc63da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f513fc8077b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f513fc984d6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f513fc945eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f514adef6db in start_thread (arg=0x7f50ab7fe700) at pthread_create.c:463
#11 0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7f50abfff700 (LWP 7388)):
#0  0x00007f514adf59f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x556b28f74e18) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f514adf59f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x556b28f74d58, cond=0x556b28f74df0) at pthread_cond_wait.c:502
#2  0x00007f514adf59f3 in __pthread_cond_wait (cond=0x556b28f74df0, mutex=0x556b28f74d58) at pthread_cond_wait.c:655
#3  0x00007f514041e060 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f513fc97f11 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f513fc945eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f514adef6db in start_thread (arg=0x7f50abfff700) at pthread_create.c:463
#7  0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7f50d8ff9700 (LWP 7387)):
#0  0x00007f514adf59f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x556b28f672a8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f514adf59f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x556b28f67258, cond=0x556b28f67280) at pthread_cond_wait.c:502
#2  0x00007f514adf59f3 in __pthread_cond_wait (cond=0x556b28f67280, mutex=0x556b28f67258) at pthread_cond_wait.c:655
#3  0x00007f513fc96c95 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f513fc97177 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f513fc97f11 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f513fc945eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f514adef6db in start_thread (arg=0x7f50d8ff9700) at pthread_create.c:463
#8  0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f50d97fa700 (LWP 7386)):
#0  0x00007f514adf59f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f50d97f9738) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f514adf59f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f50d97f96e8, cond=0x7f50d97f9710) at pthread_cond_wait.c:502
#2  0x00007f514adf59f3 in __pthread_cond_wait (cond=0x7f50d97f9710, mutex=0x7f50d97f96e8) at pthread_cond_wait.c:655
#3  0x00007f513fc8c999 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f513fc8c9c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f513fc674db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f513fc63da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f513fc8077b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f513fc984d6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f513fc945eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f514adef6db in start_thread (arg=0x7f50d97fa700) at pthread_create.c:463
#11 0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f50d9ffb700 (LWP 7385)):
#0  0x00007f515550e6ac in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f5155510474 in ___fprintf_chk (fp=0x7f51557cb8b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f5136c9a6a8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f5136c829ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f5136c82b44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f5136c8446c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f5136c7a114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f513fc67bf3 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f513fc63da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f513fc8077b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f513f51e978 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f513f51ef2b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f513fc98588 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f513fc945eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007f514adef6db in start_thread (arg=0x7f50d9ffb700) at pthread_create.c:463
#14 0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f50da7fc700 (LWP 7384)):
#0  0x00007f514adf59f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f50da7fb358) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f514adf59f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f50da7fb308, cond=0x7f50da7fb330) at pthread_cond_wait.c:502
#2  0x00007f514adf59f3 in __pthread_cond_wait (cond=0x7f50da7fb330, mutex=0x7f50da7fb308) at pthread_cond_wait.c:655
#3  0x00007f513fc8c999 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f513fc8c9c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f513fc674db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f513fc63da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f513fc8077b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f513f51e8c8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f513f51ef1b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f513fc98588 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f513fc945eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f514adef6db in start_thread (arg=0x7f50da7fc700) at pthread_create.c:463
#13 0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f50daffd700 (LWP 7383)):
#0  0x00007f514adf59f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f50daffc358) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f514adf59f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f50daffc308, cond=0x7f50daffc330) at pthread_cond_wait.c:502
#2  0x00007f514adf59f3 in __pthread_cond_wait (cond=0x7f50daffc330, mutex=0x7f50daffc308) at pthread_cond_wait.c:655
#3  0x00007f513fc8c999 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f513fc8c9c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f513fc674db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f513fc63da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f513fc8077b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f513f51e818 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f513f51ef0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f513fc98588 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f513fc945eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f514adef6db in start_thread (arg=0x7f50daffd700) at pthread_create.c:463
#13 0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f50db7fe700 (LWP 7382)):
#0  0x00007f514adf59f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f50db7fd358) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f514adf59f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f50db7fd308, cond=0x7f50db7fd330) at pthread_cond_wait.c:502
#2  0x00007f514adf59f3 in __pthread_cond_wait (cond=0x7f50db7fd330, mutex=0x7f50db7fd308) at pthread_cond_wait.c:655
#3  0x00007f513fc8c999 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f513fc8c9c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f513fc674db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f513fc63da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f513fc8077b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f513f51e768 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f513f51eefb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f513fc98588 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f513fc945eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f514adef6db in start_thread (arg=0x7f50db7fe700) at pthread_create.c:463
#13 0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f50dbfff700 (LWP 7381)):
#0  0x00007f515540edb1 in transcmp (p1=0x7f50dbffe0b0, p2=0x556b28e26c40) at dcigettext.c:290
#1  0x00007f51554fb6eb in __GI___tfind (key=key@entry=0x7f50dbffe0b0, vrootp=vrootp@entry=0x7f51557cac48 <root>, compar=compar@entry=0x7f515540eda0 <transcmp>) at tsearch.c:388
#2  0x00007f51554103ff in __dcigettext (domainname=0x7f5155591d14 <_libc_intl_domainname> "libc", msgid1=0x7f515559218a "Bad file descriptor", msgid2=msgid2@entry=0x0, plural=plural@entry=0, n=n@entry=0, category=category@entry=5) at dcigettext.c:570
#3  0x00007f515540ed7f in __GI___dcgettext (domainname=<optimized out>, msgid=<optimized out>, category=category@entry=5) at dcgettext.c:47
#4  0x00007f515547bb28 in __GI___strerror_r (errnum=errnum@entry=9, buf=buf@entry=0x0, buflen=buflen@entry=0) at _strerror.c:71
#5  0x00007f515547ba4f in strerror (errnum=9) at strerror.c:31
#6  0x00007f5136c82b31 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#7  0x00007f5136c8446c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007f5136c7a114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#9  0x00007f513fc67b0d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f513fc63da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f513fc8077b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f513f51e6b8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007f513f51eeeb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007f513fc98588 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007f513fc945eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#16 0x00007f514adef6db in start_thread (arg=0x7f50dbfff700) at pthread_create.c:463
#17 0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f50ecb7e700 (LWP 7380)):
#0  0x00007f514adf59f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f50ecb7d358) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f514adf59f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f50ecb7d308, cond=0x7f50ecb7d330) at pthread_cond_wait.c:502
#2  0x00007f514adf59f3 in __pthread_cond_wait (cond=0x7f50ecb7d330, mutex=0x7f50ecb7d308) at pthread_cond_wait.c:655
#3  0x00007f513fc8c999 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f513fc8c9c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f513fc674db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f513fc63da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f513fc8077b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f513f51e608 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f513f51eedb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f513fc98588 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f513fc945eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f514adef6db in start_thread (arg=0x7f50ecb7e700) at pthread_create.c:463
#13 0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f50ed37f700 (LWP 7379)):
#0  0x00007f514adf5ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f50ed37e7e0, expected=0, futex_word=0x7f50e00047f4) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f514adf5ed9 in __pthread_cond_wait_common (abstime=0x7f50ed37e880, mutex=0x7f50e00047a0, cond=0x7f50e00047c8) at pthread_cond_wait.c:533
#2  0x00007f514adf5ed9 in __pthread_cond_timedwait (cond=0x7f50e00047c8, mutex=0x7f50e00047a0, abstime=0x7f50ed37e880) at pthread_cond_wait.c:667
#3  0x00007f513fcc5652 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f513fc9b799 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f513fc9bcfb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f513fc945eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f514adef6db in start_thread (arg=0x7f50ed37f700) at pthread_create.c:463
#8  0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f50edb80700 (LWP 7378)):
#0  0x00007f514adf5ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f50edb7f7e0, expected=0, futex_word=0x7f50e00047f0) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f514adf5ed9 in __pthread_cond_wait_common (abstime=0x7f50edb7f880, mutex=0x7f50e00047a0, cond=0x7f50e00047c8) at pthread_cond_wait.c:533
#2  0x00007f514adf5ed9 in __pthread_cond_timedwait (cond=0x7f50e00047c8, mutex=0x7f50e00047a0, abstime=0x7f50edb7f880) at pthread_cond_wait.c:667
#3  0x00007f513fcc5652 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f513fc9b799 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f513fc9bcfb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f513fc945eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f514adef6db in start_thread (arg=0x7f50edb80700) at pthread_create.c:463
#8  0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f50ee381700 (LWP 7377)):
#0  0x00007f514adf59f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f50ee380738) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f514adf59f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f50ee3806e8, cond=0x7f50ee380710) at pthread_cond_wait.c:502
#2  0x00007f514adf59f3 in __pthread_cond_wait (cond=0x7f50ee380710, mutex=0x7f50ee3806e8) at pthread_cond_wait.c:655
#3  0x00007f513fc8c999 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f513fc8c9c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f513fc674db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f513fc63da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f513fc8077b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f513fc984d6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f513fc945eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f514adef6db in start_thread (arg=0x7f50ee381700) at pthread_create.c:463
#11 0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f50eeb82700 (LWP 7376)):
#0  0x00007f515550e6ac in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f5155510474 in ___fprintf_chk (fp=0x7f51557cb8b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f5136c9a6a8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f5136c829ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f5136c82b44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f5136c8446c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f5136c7a114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f513fc67b0d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f513fc63da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f513fc8077b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f513fc984d6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f513fc945eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f514adef6db in start_thread (arg=0x7f50eeb82700) at pthread_create.c:463
#12 0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f50f4fd9700 (LWP 7369)):
#0  0x00007f514adf59f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x556b28e24190) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f514adf59f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x556b28e24140, cond=0x556b28e24168) at pthread_cond_wait.c:502
#2  0x00007f514adf59f3 in __pthread_cond_wait (cond=0x556b28e24168, mutex=0x556b28e24140) at pthread_cond_wait.c:655
#3  0x00007f5155c0559b in QWaitCondition::wait(QMutex*, unsigned long) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5155bfdc0b in QSemaphore::acquire(int) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f50f5ff180c in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/texttospeech/libqttexttospeech_flite.so
#6  0x00007f5155c0416d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f514adef6db in start_thread (arg=0x7f50f4fd9700) at pthread_create.c:463
#8  0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f50f6e94700 (LWP 7367)):
#0  0x00007f51554f2bf9 in __GI___poll (fds=0x7f50f00049b0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f514919a439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f514919a54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5155e3b90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5155de09ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5155bff22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5155c0416d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f514adef6db in start_thread (arg=0x7f50f6e94700) at pthread_create.c:463
#8  0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f5103fff700 (LWP 7364)):
#0  0x00007f51491dfd79 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f514919a41f in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f514919a54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5155e3b90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5155de09ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5155bff22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5155c0416d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f514adef6db in start_thread (arg=0x7f5103fff700) at pthread_create.c:463
#8  0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f5110a15700 (LWP 7363)):
#0  0x00007f51554f2bf9 in __GI___poll (fds=0x7f50fc003ce0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f514919a439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f514919a54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5155e3b90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5155de09ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5155bff22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5155c0416d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f514adef6db in start_thread (arg=0x7f5110a15700) at pthread_create.c:463
#8  0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f51118d6700 (LWP 7362)):
#0  0x00007f51491de9f3 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f5149199f27 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f514919a3e0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f514919a54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f5155e3b90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5155de09ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5155bff22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f5155c0416d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f514adef6db in start_thread (arg=0x7f51118d6700) at pthread_create.c:463
#9  0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f5112ae7700 (LWP 7361)):
#0  0x00007f51554f2bf9 in __GI___poll (fds=0x7f5104026420, nfds=1, timeout=6923) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f514919a439 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f514919a54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f5155e3b90b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f5155de09ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f5155bff22a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f5154438d45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f5155c0416d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f514adef6db in start_thread (arg=0x7f5112ae7700) at pthread_create.c:463
#9  0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f511377f700 (LWP 7360)):
#0  0x00007f514adf59f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x556b28a65f38) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f514adf59f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x556b28a65ee8, cond=0x556b28a65f10) at pthread_cond_wait.c:502
#2  0x00007f514adf59f3 in __pthread_cond_wait (cond=0x556b28a65f10, mutex=0x556b28a65ee8) at pthread_cond_wait.c:655
#3  0x00007f511cbc146b in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#4  0x00007f511cbc1197 in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#5  0x00007f514adef6db in start_thread (arg=0x7f511377f700) at pthread_create.c:463
#6  0x00007f51554ff88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f515841fb80 (LWP 7357)):
[KCrash Handler]
#6  0x00007f511c46e0c3 in  () at /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#7  0x00007f511c46e7ed in  () at /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#8  0x00007f511ce40541 in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#9  0x00007f511ce40677 in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#10 0x00007f511ce4b1fe in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#11 0x00007f511cade0cf in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#12 0x00007f511caa22bb in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#13 0x00007f511caa25b8 in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#14 0x00007f51566f9163 in QOpenGLTextureBlitter::blit(unsigned int, QMatrix4x4 const&, QGenericMatrix<3, 3, float> const&) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#15 0x00007f5156692acb in QPlatformBackingStore::composeAndFlush(QWindow*, QRegion const&, QPoint const&, QPlatformTextureList*, QOpenGLContext*, bool) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#16 0x00007f5121daadf7 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#17 0x00007f5156b6d067 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#18 0x00007f5156b6e7e2 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#19 0x00007f5156b6fe69 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#20 0x00007f5156b70095 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f5156b8766f in QWidgetPrivate::syncBackingStore() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f5156b9f1a8 in QWidget::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#23 0x00007f5156cb2c4b in QMainWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f5154ef2b87 in KMainWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#25 0x00007f5154f379e5 in KXmlGuiWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#26 0x00007f5156b6082c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007f5156b680f4 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f5155de29a8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f5155de511d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f5155e3c2c3 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f514919a287 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f514919a4c0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f514919a54c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f5155e3b8ef in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007f5155de09ea in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007f5155de9a84 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x0000556b2879d7cd in  ()
#38 0x00007f51553ffb97 in __libc_start_main (main=0x556b2879c840, argc=3, argv=0x7fffdf074b78, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fffdf074b68) at ../csu/libc-start.c:310
#39 0x0000556b2879d8fa in _start ()

Reported using DrKonqi
Comment 1 Laurent Montel 2018-09-29 14:07:36 UTC 
it seems to be a bug about nouveau driver
Comment 2 Christoph Feck 2018-10-01 14:25:36 UTC 
Crash is in the nouveau OpenGL drivers. Please report this issue directly to nouveau developers via https://bugs.freedesktop.org/