Bug 388050

Summary: KMail sometimes crashes when opening an email
Product: [Applications] kmail2 Reporter: Tobias Wichtrey <mail>
Component: generalAssignee: kdepim bugs <kdepim-bugs>
Status: RESOLVED DOWNSTREAM    
Severity: crash CC: crissi99, crist.villavicencio, varun-patel
Priority: NOR Keywords: drkonqi
Version: 5.5.3   
Target Milestone: ---   
Platform: Ubuntu   
OS: Linux   
Latest Commit: Version Fixed In:
Sentry Crash Report:

Description Tobias Wichtrey 2017-12-19 21:10:48 UTC 
Application: kmail (5.5.3)

Qt Version: 5.9.1
Frameworks Version: 5.40.0
Operating System: Linux 4.13.0-19-generic x86_64
Distribution: Ubuntu 17.10

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

KMail sometimes crashes when clicking on an email. This is, what I did before this crash.
KMail also randomly crashes when resizing its window and on startup.

The crash can be reproduced sometimes.

-- Backtrace:
Application: KMail (kmail), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fbe7a93fb80 (LWP 16874))]

Thread 25 (Thread 0x7fbdb0845700 (LWP 16956)):
#0  0x00007fbe6d551072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fbe5f1c8fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7fbe5f1c8f68, cond=0x7fbe5f1c8f90) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7fbe5f1c8f90, mutex=0x7fbe5f1c8f68) at pthread_cond_wait.c:655
#3  0x00007fbe5eed4bd4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007fbe5eed4c19 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007fbe6d54a7fc in start_thread (arg=0x7fbdb0845700) at pthread_create.c:465
#6  0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 24 (Thread 0x7fbde1ffb700 (LWP 16907)):
#0  0x00007fbe519d6213 in pa_pstream_unref () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-10.0.so
#1  0x00007fbe519d6739 in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-10.0.so
#2  0x00007fbe519d6fbf in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-10.0.so
#3  0x00007fbe5a1d60d8 in pa_mainloop_dispatch () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007fbe5a1d64ae in pa_mainloop_iterate () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007fbe5a1d6530 in pa_mainloop_run () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007fbe5a1e4399 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#7  0x00007fbe519e6ed8 in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-10.0.so
#8  0x00007fbe6d54a7fc in start_thread (arg=0x7fbde1ffb700) at pthread_create.c:465
#9  0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7fbde27fc700 (LWP 16906)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fbe77a41f34 in ___fprintf_chk (fp=0x7fbe77cf9870 <_IO_stdfile_2_lock>, flag=1, format=0x7fbe57df3528 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fbe57ddb74a in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007fbe57ddb924 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007fbe57ddd278 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007fbe57dd3019 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007fbe62456b4d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fbe62452dc8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fbe6246f9bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fbe624876b6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fbe624837bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fbe6d54a7fc in start_thread (arg=0x7fbde27fc700) at pthread_create.c:465
#12 0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7fbde2ffd700 (LWP 16905)):
#0  0x00007fbe6d551072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fbde2ffc748) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7fbde2ffc6f8, cond=0x7fbde2ffc720) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7fbde2ffc720, mutex=0x7fbde2ffc6f8) at pthread_cond_wait.c:655
#3  0x00007fbe6247bb59 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fbe6247bb87 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fbe624564fb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fbe62452dc8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fbe6246f9bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fbe624876b6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fbe624837bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fbe6d54a7fc in start_thread (arg=0x7fbde2ffd700) at pthread_create.c:465
#11 0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7fbde37fe700 (LWP 16904)):
#0  0x00007fbe6d55164b in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7fbde37fd5e0, expected=0, futex_word=0x7fbde37fd768) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7fbde37fd680, mutex=0x7fbde37fd718, cond=0x7fbde37fd740) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7fbde37fd740, mutex=0x7fbde37fd718, abstime=0x7fbde37fd680) at pthread_cond_wait.c:667
#3  0x00007fbe624b48c2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fbe6247bade in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fbe6245654b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fbe62452dc8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fbe6246f9bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fbe624876b6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fbe624837bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fbe6d54a7fc in start_thread (arg=0x7fbde37fe700) at pthread_create.c:465
#11 0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7fbde3fff700 (LWP 16903)):
#0  0x00007fbe6d551072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563f647d9bf8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x563f647d9b38, cond=0x563f647d9bd0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x563f647d9bd0, mutex=0x563f647d9b38) at pthread_cond_wait.c:655
#3  0x00007fbe62c06b80 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fbe624870f1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fbe624837bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fbe6d54a7fc in start_thread (arg=0x7fbde3fff700) at pthread_create.c:465
#7  0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7fbe08ff9700 (LWP 16902)):
#0  0x00007fbe6d551072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563f647cd108) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x563f647cd0b8, cond=0x563f647cd0e0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x563f647cd0e0, mutex=0x563f647cd0b8) at pthread_cond_wait.c:655
#3  0x00007fbe62485e75 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fbe62486357 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fbe624870f1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fbe624837bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fbe6d54a7fc in start_thread (arg=0x7fbe08ff9700) at pthread_create.c:465
#8  0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7fbe097fa700 (LWP 16901)):
#0  0x00007fbe6d551072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fbe097f9748) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7fbe097f96f8, cond=0x7fbe097f9720) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7fbe097f9720, mutex=0x7fbe097f96f8) at pthread_cond_wait.c:655
#3  0x00007fbe6247bb59 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fbe6247bb87 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fbe624564fb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fbe62452dc8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fbe6246f9bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fbe624876b6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fbe624837bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fbe6d54a7fc in start_thread (arg=0x7fbe097fa700) at pthread_create.c:465
#11 0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7fbe09ffb700 (LWP 16900)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007fbe77a41f34 in ___fprintf_chk (fp=0x7fbe77cf9870 <_IO_stdfile_2_lock>, flag=1, format=0x7fbe57df3528 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fbe57ddb74a in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007fbe57ddb924 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007fbe57ddd278 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007fbe57dd3019 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007fbe62456af9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fbe62452dc8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fbe6246f9bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fbe61d0cdc8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fbe61d0d37b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fbe62487768 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fbe624837bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007fbe6d54a7fc in start_thread (arg=0x7fbe09ffb700) at pthread_create.c:465
#14 0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7fbe0a7fc700 (LWP 16899)):
#0  0x00007fbe6d551072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fbe0a7fb368) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7fbe0a7fb318, cond=0x7fbe0a7fb340) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7fbe0a7fb340, mutex=0x7fbe0a7fb318) at pthread_cond_wait.c:655
#3  0x00007fbe6247bb59 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fbe6247bb87 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fbe624564fb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fbe62452dc8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fbe6246f9bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fbe61d0cd18 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fbe61d0d36b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fbe62487768 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fbe624837bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fbe6d54a7fc in start_thread (arg=0x7fbe0a7fc700) at pthread_create.c:465
#13 0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7fbe0affd700 (LWP 16898)):
#0  0x00007fbe6d551072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fbe0affc368) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7fbe0affc318, cond=0x7fbe0affc340) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7fbe0affc340, mutex=0x7fbe0affc318) at pthread_cond_wait.c:655
#3  0x00007fbe6247bb59 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fbe6247bb87 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fbe624564fb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fbe62452dc8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fbe6246f9bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fbe61d0cc68 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fbe61d0d35b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fbe62487768 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fbe624837bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fbe6d54a7fc in start_thread (arg=0x7fbe0affd700) at pthread_create.c:465
#13 0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7fbe0b7fe700 (LWP 16897)):
#0  0x00007fbe6d551072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fbe0b7fd368) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7fbe0b7fd318, cond=0x7fbe0b7fd340) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7fbe0b7fd340, mutex=0x7fbe0b7fd318) at pthread_cond_wait.c:655
#3  0x00007fbe6247bb59 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fbe6247bb87 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fbe624564fb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fbe62452dc8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fbe6246f9bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fbe61d0cbb8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fbe61d0d34b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fbe62487768 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fbe624837bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fbe6d54a7fc in start_thread (arg=0x7fbe0b7fe700) at pthread_create.c:465
#13 0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7fbe0bfff700 (LWP 16896)):
#0  0x00007fbe77a210a0 in __GI___libc_write (fd=2, buf=buf@entry=0x7fbe0bffb6d0, nbytes=nbytes@entry=47) at ../sysdeps/unix/sysv/linux/write.c:26
#1  0x00007fbe7799fba7 in _IO_new_file_write (f=0x7fbe77cf8640 <_IO_2_1_stderr_>, data=0x7fbe0bffb6d0, n=47) at fileops.c:1255
#2  0x00007fbe779a04d8 in new_do_write (to_do=<optimized out>, data=0x7fbe0bffb6d0 "[warn] epoll_wait: Ung\303\274ltiger Dateideskriptor\n", fp=0x7fbe77cf8640 <_IO_2_1_stderr_>) at fileops.c:510
#3  _IO_new_file_xsputn (f=0x7fbe77cf8640 <_IO_2_1_stderr_>, data=<optimized out>, n=47) at fileops.c:1334
#4  0x00007fbe77973848 in buffered_vfprintf (s=s@entry=0x7fbe77cf8640 <_IO_2_1_stderr_>, format=format@entry=0x7fbe57df3528 "[%s] %s\n", args=args@entry=0x7fbe0bffdca0) at vfprintf.c:2351
#5  0x00007fbe77970aa6 in _IO_vfprintf_internal (s=s@entry=0x7fbe77cf8640 <_IO_2_1_stderr_>, format=0x7fbe57df3528 "[%s] %s\n", ap=ap@entry=0x7fbe0bffdca0) at vfprintf.c:1301
#6  0x00007fbe77a41f86 in ___fprintf_chk (fp=0x7fbe77cf8640 <_IO_2_1_stderr_>, flag=1, format=<optimized out>) at fprintf_chk.c:35
#7  0x00007fbe57ddb74a in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007fbe57ddb924 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#9  0x00007fbe57ddd278 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#10 0x00007fbe57dd3019 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#11 0x00007fbe62456b4d in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fbe62452dc8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007fbe6246f9bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007fbe61d0cb08 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007fbe61d0d33b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#16 0x00007fbe62487768 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#17 0x00007fbe624837bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#18 0x00007fbe6d54a7fc in start_thread (arg=0x7fbe0bfff700) at pthread_create.c:465
#19 0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fbe18b7e700 (LWP 16895)):
#0  0x00007fbe6d551072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fbe18b7d368) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7fbe18b7d318, cond=0x7fbe18b7d340) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7fbe18b7d340, mutex=0x7fbe18b7d318) at pthread_cond_wait.c:655
#3  0x00007fbe6247bb59 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fbe6247bb87 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fbe624564fb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fbe62452dc8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fbe6246f9bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fbe61d0ca58 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fbe61d0d32b in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fbe62487768 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fbe624837bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fbe6d54a7fc in start_thread (arg=0x7fbe18b7e700) at pthread_create.c:465
#13 0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fbe1937f700 (LWP 16894)):
#0  0x00007fbe6d55164b in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7fbe1937e7f0, expected=0, futex_word=0x7fbe100047b0) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7fbe1937e890, mutex=0x7fbe10004760, cond=0x7fbe10004788) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7fbe10004788, mutex=0x7fbe10004760, abstime=0x7fbe1937e890) at pthread_cond_wait.c:667
#3  0x00007fbe624b48c2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fbe6248a979 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fbe6248aedb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fbe624837bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fbe6d54a7fc in start_thread (arg=0x7fbe1937f700) at pthread_create.c:465
#8  0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fbe19b80700 (LWP 16893)):
#0  0x00007fbe6d55164b in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7fbe19b7f7f0, expected=0, futex_word=0x7fbe100047b4) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7fbe19b7f890, mutex=0x7fbe10004760, cond=0x7fbe10004788) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7fbe10004788, mutex=0x7fbe10004760, abstime=0x7fbe19b7f890) at pthread_cond_wait.c:667
#3  0x00007fbe624b48c2 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fbe6248a979 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fbe6248aedb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fbe624837bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fbe6d54a7fc in start_thread (arg=0x7fbe19b80700) at pthread_create.c:465
#8  0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fbe1a381700 (LWP 16892)):
#0  0x00007fbe6d551072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7fbe1a380748) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7fbe1a3806f8, cond=0x7fbe1a380720) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7fbe1a380720, mutex=0x7fbe1a3806f8) at pthread_cond_wait.c:655
#3  0x00007fbe6247bb59 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fbe6247bb87 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fbe624564fb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fbe62452dc8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fbe6246f9bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fbe624876b6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fbe624837bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fbe6d54a7fc in start_thread (arg=0x7fbe1a381700) at pthread_create.c:465
#11 0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fbe1ab82700 (LWP 16891)):
#0  __lll_unlock_wake_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:341
#1  0x00007fbe77a41fd8 in _IO_acquire_lock_clear_flags2_fct (p=<synthetic pointer>) at ../libio/libioP.h:875
#2  ___fprintf_chk (fp=0x7fbe77cf8640 <_IO_2_1_stderr_>, flag=1, format=<optimized out>) at fprintf_chk.c:30
#3  0x00007fbe57ddb74a in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007fbe57ddb924 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007fbe57ddd278 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007fbe57dd3019 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#7  0x00007fbe62456af9 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fbe62452dc8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fbe6246f9bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fbe624876b6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fbe624837bb in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fbe6d54a7fc in start_thread (arg=0x7fbe1ab82700) at pthread_create.c:465
#13 0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fbe3198f700 (LWP 16880)):
#0  __tls_get_addr () at ../sysdeps/x86_64/tls_get_addr.S:31
#1  0x00007fbe7812e126 in get_thread_data () at thread/qthread_unix.cpp:189
#2  QThreadData::current (createIfNecessary=createIfNecessary@entry=true) at thread/qthread_unix.cpp:244
#3  0x00007fbe7836539a in postEventSourcePrepare (s=0x7fbe1c004b90, timeout=0x7fbe3198e864) at kernel/qeventdispatcher_glib.cpp:252
#4  0x00007fbe6b9a06a8 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fbe6b9a109b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fbe6b9a127c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007fbe7836549b in QEventDispatcherGlib::processEvents (this=0x7fbe1c000b10, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#8  0x00007fbe7830ae3a in QEventLoop::exec (this=this@entry=0x7fbe3198ea30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#9  0x00007fbe7812a3ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#10 0x00007fbe7812f29d in QThreadPrivate::start (arg=0x563f644d6590) at thread/qthread_unix.cpp:368
#11 0x00007fbe6d54a7fc in start_thread (arg=0x7fbe3198f700) at pthread_create.c:465
#12 0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fbe32190700 (LWP 16879)):
#0  0x00007fbe77a25901 in __GI___poll (fds=0x7fbe28002de0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fbe6b9a1169 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fbe6b9a127c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fbe7836549b in QEventDispatcherGlib::processEvents (this=0x7fbe28000b10, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#4  0x00007fbe7830ae3a in QEventLoop::exec (this=this@entry=0x7fbe3218fa30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#5  0x00007fbe7812a3ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#6  0x00007fbe7812f29d in QThreadPrivate::start (arg=0x563f644b7df0) at thread/qthread_unix.cpp:368
#7  0x00007fbe6d54a7fc in start_thread (arg=0x7fbe32190700) at pthread_create.c:465
#8  0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fbe32dee700 (LWP 16878)):
#0  0x00007fbe6b9e65b9 in g_mutex_lock () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fbe6b9a06b3 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fbe6b9a109b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fbe6b9a127c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fbe7836549b in QEventDispatcherGlib::processEvents (this=0x7fbe24000b10, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007fbe7830ae3a in QEventLoop::exec (this=this@entry=0x7fbe32deda30, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007fbe7812a3ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#7  0x00007fbe7812f29d in QThreadPrivate::start (arg=0x563f644beeb0) at thread/qthread_unix.cpp:368
#8  0x00007fbe6d54a7fc in start_thread (arg=0x7fbe32dee700) at pthread_create.c:465
#9  0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fbe33fff700 (LWP 16877)):
#0  0x00007fbe78365378 in postEventSourcePrepare (s=0x7fbe2c004b90, timeout=0x7fbe33ffe834) at kernel/qeventdispatcher_glib.cpp:251
#1  0x00007fbe6b9a06a8 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fbe6b9a109b in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fbe6b9a127c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fbe7836549b in QEventDispatcherGlib::processEvents (this=0x7fbe2c000b10, flags=...) at kernel/qeventdispatcher_glib.cpp:425
#5  0x00007fbe7830ae3a in QEventLoop::exec (this=this@entry=0x7fbe33ffea00, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#6  0x00007fbe7812a3ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:515
#7  0x00007fbe7697ce45 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#8  0x00007fbe7812f29d in QThreadPrivate::start (arg=0x7fbe76befd60) at thread/qthread_unix.cpp:368
#9  0x00007fbe6d54a7fc in start_thread (arg=0x7fbe33fff700) at pthread_create.c:465
#10 0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fbe409bb700 (LWP 16876)):
#0  0x00007fbe6d551072 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563f6441da80) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x563f6441da30, cond=0x563f6441da58) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x563f6441da58, mutex=0x563f6441da30) at pthread_cond_wait.c:655
#3  0x00007fbe421bbb8b in cnd_wait (mtx=0x563f6441da30, cond=0x563f6441da58) at ../../../include/c11/threads_posix.h:159
#4  util_queue_thread_func (input=input@entry=0x563f6441d1f0) at ../../../src/util/u_queue.c:158
#5  0x00007fbe421bbaa7 in impl_thrd_routine (p=<optimized out>) at ../../../include/c11/threads_posix.h:87
#6  0x00007fbe6d54a7fc in start_thread (arg=0x7fbe409bb700) at pthread_create.c:465
#7  0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fbe44505700 (LWP 16875)):
#0  0x00007fbe77a25901 in __GI___poll (fds=0x7fbe44504938, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fbe6add1747 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fbe6add353a in xcb_wait_for_event () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fbe45bd4f09 in QXcbEventReader::run (this=0x563f64361320) at qxcbconnection.cpp:1322
#4  0x00007fbe7812f29d in QThreadPrivate::start (arg=0x563f64361320) at thread/qthread_unix.cpp:368
#5  0x00007fbe6d54a7fc in start_thread (arg=0x7fbe44505700) at pthread_create.c:465
#6  0x00007fbe77a31b0f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fbe7a93fb80 (LWP 16874)):
[KCrash Handler]
#6  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#7  0x00007fbe77955f5d in __GI_abort () at abort.c:90
#8  0x00007fbe7794bf17 in __assert_fail_base (fmt=<optimized out>, assertion=assertion@entry=0x7fbe41a77743 "kref", file=file@entry=0x7fbe41a7772a "../../nouveau/pushbuf.c", line=line@entry=727, function=function@entry=0x7fbe41a77770 <__PRETTY_FUNCTION__.6337> "nouveau_pushbuf_data") at assert.c:92
#9  0x00007fbe7794bfc2 in __GI___assert_fail (assertion=assertion@entry=0x7fbe41a77743 "kref", file=file@entry=0x7fbe41a7772a "../../nouveau/pushbuf.c", line=line@entry=727, function=function@entry=0x7fbe41a77770 <__PRETTY_FUNCTION__.6337> "nouveau_pushbuf_data") at assert.c:101
#10 0x00007fbe41a75b8d in nouveau_pushbuf_data (push=push@entry=0x563f64417e30, bo=0x563f64417f70, offset=314872, length=472) at ../../nouveau/pushbuf.c:727
#11 0x00007fbe41a75b46 in nouveau_pushbuf_data (push=push@entry=0x563f64417e30, bo=bo@entry=0x0, offset=offset@entry=0, length=length@entry=0) at ../../nouveau/pushbuf.c:719
#12 0x00007fbe41a75c14 in pushbuf_submit (push=push@entry=0x563f64417e30, chan=<optimized out>, chan=<optimized out>) at ../../nouveau/pushbuf.c:330
#13 0x00007fbe41a75ebf in pushbuf_flush (push=push@entry=0x563f64417e30) at ../../nouveau/pushbuf.c:405
#14 0x00007fbe41a76a50 in nouveau_pushbuf_kick (push=0x563f64417e30, chan=<optimized out>) at ../../nouveau/pushbuf.c:779
#15 0x00007fbe42462986 in PUSH_KICK (push=<optimized out>) at ../../../../../src/gallium/drivers/nouveau/nouveau_winsys.h:59
#16 nvc0_flush (pipe=0x563f64b2dcc0, fence=<optimized out>, flags=<optimized out>) at ../../../../../src/gallium/drivers/nouveau/nvc0/nvc0_context.c:42
#17 0x00007fbe420fd316 in st_context_flush (stctxi=0x563f64b25780, flags=3, fence=0x7ffd84e0bb00) at ../../../src/mesa/state_tracker/st_manager.c:635
#18 0x00007fbe4223c89a in dri_flush (cPriv=<optimized out>, dPriv=<optimized out>, flags=3, reason=<optimized out>) at ../../../../../src/gallium/state_trackers/dri/dri_drawable.c:550
#19 0x00007fbe6cfc2028 in dri2SwapBuffers (pdraw=0x563f64c01e70, target_msc=0, divisor=0, remainder=0, flush=1) at ../../../src/glx/dri2_glx.c:845
#20 0x00007fbe43afd7d2 in QGLXContext::swapBuffers (this=0x563f64b2bb20, surface=0x563f6498e240) at qglxintegration.cpp:545
#21 0x00007fbe7890592a in QOpenGLContext::swapBuffers (this=this@entry=0x563f6498f080, surface=surface@entry=0x563f6498e8e0) at kernel/qopenglcontext.cpp:1107
#22 0x00007fbe78bba27f in QPlatformBackingStore::composeAndFlush (this=this@entry=0x563f649aafc0, window=window@entry=0x563f6498e8d0, region=..., offset=..., textures=<optimized out>, context=<optimized out>, translucentBackground=<optimized out>) at painting/qplatformbackingstore.cpp:421
#23 0x00007fbe45bf4777 in QXcbBackingStore::composeAndFlush (this=0x563f649aafc0, window=0x563f6498e8d0, region=..., offset=..., textures=<optimized out>, context=<optimized out>, translucentBackground=false) at qxcbbackingstore.cpp:618
#24 0x00007fbe79093ca7 in QWidgetBackingStore::qt_flush (widget=0x563f645ee3b0, region=..., backingStore=<optimized out>, tlw=<optimized out>, tlwOffset=..., widgetTextures=<optimized out>, widgetBackingStore=<optimized out>) at kernel/qwidgetbackingstore.cpp:145
#25 0x00007fbe7909539e in QWidgetBackingStore::flush (this=this@entry=0x563f64997880, widget=widget@entry=0x0) at kernel/qwidgetbackingstore.cpp:1396
#26 0x00007fbe79096a99 in QWidgetBackingStore::endPaint (beginPaintInfo=<synthetic pointer>, backingStore=<optimized out>, cleaned=..., this=0x563f64997880) at kernel/qwidgetbackingstore.cpp:355
#27 QWidgetBackingStore::doSync (this=this@entry=0x563f64997880) at kernel/qwidgetbackingstore.cpp:1380
#28 0x00007fbe79096cc5 in QWidgetBackingStore::sync (this=0x563f64997880) at kernel/qwidgetbackingstore.cpp:1158
#29 0x00007fbe790b053f in QWidgetPrivate::syncBackingStore (this=0x563f645eec70) at kernel/qwidget.cpp:1969
#30 0x00007fbe790c7f38 in QWidget::event (this=this@entry=0x563f645ee3b0, event=event@entry=0x563f65f6d790) at kernel/qwidget.cpp:9117
#31 0x00007fbe791b5bab in QMainWindow::event (this=0x563f645ee3b0, event=0x563f65f6d790) at widgets/qmainwindow.cpp:1557
#32 0x00007fbe77430c17 in KMainWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#33 0x00007fbe77475da5 in KXmlGuiWindow::event(QEvent*) () from /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#34 0x00007fbe7908746c in QApplicationPrivate::notify_helper (this=this@entry=0x563f643570f0, receiver=receiver@entry=0x563f645ee3b0, e=e@entry=0x563f65f6d790) at kernel/qapplication.cpp:3717
#35 0x00007fbe7908ed34 in QApplication::notify (this=0x7ffd84e0cd20, receiver=0x563f645ee3b0, e=0x563f65f6d790) at kernel/qapplication.cpp:3476
#36 0x00007fbe7830cde8 in QCoreApplication::notifyInternal2 (receiver=0x563f645ee3b0, event=event@entry=0x563f65f6d790) at kernel/qcoreapplication.cpp:1018
#37 0x00007fbe7830f55d in QCoreApplication::sendEvent (event=0x563f65f6d790, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:233
#38 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0, data=0x563f643532f0) at kernel/qcoreapplication.cpp:1678
#39 0x00007fbe7830fae8 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1532
#40 0x00007fbe78365e53 in postEventSourceDispatch (s=0x563f643a21b0) at kernel/qeventdispatcher_glib.cpp:276
#41 0x00007fbe6b9a0fb7 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#42 0x00007fbe6b9a11f0 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#43 0x00007fbe6b9a127c in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#44 0x00007fbe7836547f in QEventDispatcherGlib::processEvents (this=0x563f643a3f00, flags=...) at kernel/qeventdispatcher_glib.cpp:423
#45 0x00007fbe7830ae3a in QEventLoop::exec (this=this@entry=0x7ffd84e0c860, flags=..., flags@entry=...) at kernel/qeventloop.cpp:212
#46 0x00007fbe78313da4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1291
#47 0x0000563f6332584d in main (argc=<optimized out>, argv=<optimized out>) at ./src/main.cpp:156

The reporter indicates this bug may be a duplicate of or related to bug 380903.

Possible duplicates by query: bug 386263, bug 385624, bug 382799, bug 380903.

Reported using DrKonqi
Comment 1 Christoph Feck 2018-01-02 17:13:38 UTC 
Crash is in the nouveau OpenGL driver, not correctly handling OpenGL calls from multiple threads. Please inform your distribution that there are existing patches that disable OpenGL for QtWebEngine when using the nouveau driver.
Comment 2 Christoph Feck 2018-11-03 20:44:46 UTC 
*** Bug 399884 has been marked as a duplicate of this bug. ***
Comment 3 Christoph Feck 2018-11-03 20:44:56 UTC 
*** Bug 400635 has been marked as a duplicate of this bug. ***
Comment 4 Christophe Marin 2019-06-05 17:38:34 UTC 
*** Bug 408340 has been marked as a duplicate of this bug. ***