Application: kmail (5.11.2)

Qt Version: 5.12.3
Frameworks Version: 5.59.0
Operating System: Linux 4.18.0-24-generic x86_64
Distribution: KDE neon User Edition 5.16

-- Information about the crash:
- What I was doing when the application crashed:
Started KMail for the first time, entered new account information. Password was wrong. I entered it again in the config dialog. It was accepted. I clicked on the newly created account and KMail crashed without displaying any folder or e-mails.

-- 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 0x7f7d08b51bc0 (LWP 7244))]

Thread 20 (Thread 0x7f7c3ffff700 (LWP 7420)):
#0  0x00007f7cfb2f99f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f7ceb9befb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f7ceb9bef68, cond=0x7f7ceb9bef90) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f7ceb9bef90, mutex=0x7f7ceb9bef68) at pthread_cond_wait.c:655
#3  0x00007f7ceb6c8844 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f7ceb6c8889 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f7cfb2f36db in start_thread (arg=0x7f7c3ffff700) at pthread_create.c:463
#6  0x00007f7d05b7e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f7c4560e700 (LWP 7395)):
#0  0x00007f7cfb2f99f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f7c4560d908) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f7c4560d8b8, cond=0x7f7c4560d8e0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f7c4560d8e0, mutex=0x7f7c4560d8b8) at pthread_cond_wait.c:655
#3  0x00007f7cf03d4a49 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f7cf03d5478 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f7cf03d550f in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f7cf0395fc8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f7cf03987f6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f7cf0398b34 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f7cf03d7561 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f7cfb2f36db in start_thread (arg=0x7f7c4560e700) at pthread_create.c:463
#11 0x00007f7d05b7e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f7c84ff9700 (LWP 7391)):
#0  0x00007f7d05b6d0b4 in __GI___libc_read (fd=59, buf=0x7f7c84ff881e, nbytes=10) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f7ce028b021 in pa_read () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#2  0x00007f7ce806aa2e in pa_mainloop_prepare () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f7ce806b4a0 in pa_mainloop_iterate () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f7ce806b560 in pa_mainloop_run () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f7ce80793c9 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f7ce02ba318 in ?? () from /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#7  0x00007f7cfb2f36db in start_thread (arg=0x7f7c84ff9700) at pthread_create.c:463
#8  0x00007f7d05b7e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f7c857fa700 (LWP 7389)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f7d05b8f474 in ___fprintf_chk (fp=0x7f7d05e4a8b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f7ce5a986a8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f7ce5a809ad in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f7ce5a80b44 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f7ce5a8246c in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f7ce5a78114 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f7cf03dac79 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f7cf03752db in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f7cf03a7311 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f7cf03d7561 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f7cfb2f36db in start_thread (arg=0x7f7c857fa700) at pthread_create.c:463
#11 0x00007f7d05b7e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f7c85ffb700 (LWP 7388)):
#0  0x00007f7cfb2f9ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f7c85ffa700, expected=0, futex_word=0x7f7c85ffa8e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f7c85ffa7a0, mutex=0x7f7c85ffa898, cond=0x7f7c85ffa8c0) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f7c85ffa8c0, mutex=0x7f7c85ffa898, abstime=0x7f7c85ffa7a0) at pthread_cond_wait.c:667
#3  0x00007f7cf03d4b17 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f7cf03d546a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f7cf0353a80 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f7cf03752db in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f7cf03a7311 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f7cf03d7561 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f7cfb2f36db in start_thread (arg=0x7f7c85ffb700) at pthread_create.c:463
#10 0x00007f7d05b7e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f7c867fc700 (LWP 7387)):
#0  0x00007f7cfb2f9ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f7c867fb700, expected=0, futex_word=0x7f7c867fb8e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f7c867fb7a0, mutex=0x7f7c867fb898, cond=0x7f7c867fb8c0) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f7c867fb8c0, mutex=0x7f7c867fb898, abstime=0x7f7c867fb7a0) at pthread_cond_wait.c:667
#3  0x00007f7cf03d4b17 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f7cf03d546a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f7cf0353a80 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f7cf03752db in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f7cf03a7311 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f7cf03d7561 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f7cfb2f36db in start_thread (arg=0x7f7c867fc700) at pthread_create.c:463
#10 0x00007f7d05b7e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f7c86ffd700 (LWP 7386)):
#0  0x00007f7cfb2f99f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55834ce8d158) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55834ce8d098, cond=0x55834ce8d130) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55834ce8d130, mutex=0x55834ce8d098) at pthread_cond_wait.c:655
#3  0x00007f7cf03d4a49 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f7cf0c8d178 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f7cf03a87df in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f7cf03d7561 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f7cfb2f36db in start_thread (arg=0x7f7c86ffd700) at pthread_create.c:463
#8  0x00007f7d05b7e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f7c877fe700 (LWP 7385)):
#0  0x00007f7cfb2f99f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f7c877fd908) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x7f7c877fd8b8, cond=0x7f7c877fd8e0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x7f7c877fd8e0, mutex=0x7f7c877fd8b8) at pthread_cond_wait.c:655
#3  0x00007f7cf03d4a49 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f7cf03d5478 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f7cf03d550f in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f7cf0395fc8 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f7cf03987f6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f7cf0398af4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f7cf03d7561 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f7cfb2f36db in start_thread (arg=0x7f7c877fe700) at pthread_create.c:463
#11 0x00007f7d05b7e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f7c87fff700 (LWP 7384)):
#0  __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f7d05b8f474 in ___fprintf_chk (fp=0x7f7d05e4a8b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f7ce5a986a8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f7ce5a809ad in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f7ce5a80b44 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f7ce5a8246c in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f7ce5a78114 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f7cf03dadb4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f7cf03752db in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f7cefd3c514 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f7cf03a7468 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f7cf03d7561 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f7cfb2f36db in start_thread (arg=0x7f7c87fff700) at pthread_create.c:463
#12 0x00007f7d05b7e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f7c95ffb700 (LWP 7381)):
#0  0x00007f7cfb2f9ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f7c95ffa710, expected=0, futex_word=0x7f7c95ffa8f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f7c95ffa7b0, mutex=0x7f7c95ffa8a8, cond=0x7f7c95ffa8d0) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f7c95ffa8d0, mutex=0x7f7c95ffa8a8, abstime=0x7f7c95ffa7b0) at pthread_cond_wait.c:667
#3  0x00007f7cf03d4b17 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f7cf03d546a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f7cf03d5552 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f7cf0395fb1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f7cf03987f6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f7cf0398ab4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f7cf03d7561 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f7cfb2f36db in start_thread (arg=0x7f7c95ffb700) at pthread_create.c:463
#11 0x00007f7d05b7e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f7c967fc700 (LWP 7380)):
#0  0x00007f7cfb2f9ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f7c967fb710, expected=0, futex_word=0x7f7c967fb8f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  __pthread_cond_wait_common (abstime=0x7f7c967fb7b0, mutex=0x7f7c967fb8a8, cond=0x7f7c967fb8d0) at pthread_cond_wait.c:533
#2  __pthread_cond_timedwait (cond=0x7f7c967fb8d0, mutex=0x7f7c967fb8a8, abstime=0x7f7c967fb7b0) at pthread_cond_wait.c:667
#3  0x00007f7cf03d4b17 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f7cf03d546a in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f7cf03d5552 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f7cf0395fb1 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f7cf03987f6 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f7cf0398ab4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f7cf03d7561 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f7cfb2f36db in start_thread (arg=0x7f7c967fc700) at pthread_create.c:463
#11 0x00007f7d05b7e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f7c96ffd700 (LWP 7379)):
#0  0x00007f7d05b6d187 in __GI___libc_write (fd=2, buf=0x7f7c96ff9c20, nbytes=39) at ../sysdeps/unix/sysv/linux/write.c:27
#1  0x00007f7d05ae81bd in _IO_new_file_write (f=0x7f7d05e49680 <_IO_2_1_stderr_>, data=0x7f7c96ff9c20, n=39) at fileops.c:1203
#2  0x00007f7d05ae8b2f in new_do_write (to_do=<optimized out>, data=0x7f7c96ff9c20 "[warn] epoll_wait: Bad file descriptor\n", fp=0x7f7d05e49680 <_IO_2_1_stderr_>) at fileops.c:457
#3  _IO_new_file_xsputn (f=0x7f7d05e49680 <_IO_2_1_stderr_>, data=<optimized out>, n=39) at fileops.c:1277
#4  0x00007f7d05abb707 in buffered_vfprintf (s=s@entry=0x7f7d05e49680 <_IO_2_1_stderr_>, format=format@entry=0x7f7ce5a986a8 "[%s] %s\n", args=args@entry=0x7f7c96ffc1e0) at vfprintf.c:2350
#5  0x00007f7d05ab8726 in _IO_vfprintf_internal (s=s@entry=0x7f7d05e49680 <_IO_2_1_stderr_>, format=0x7f7ce5a986a8 "[%s] %s\n", ap=ap@entry=0x7f7c96ffc1e0) at vfprintf.c:1301
#6  0x00007f7d05b8f4c6 in ___fprintf_chk (fp=0x7f7d05e49680 <_IO_2_1_stderr_>, flag=1, format=<optimized out>) at fprintf_chk.c:35
#7  0x00007f7ce5a809ad in event_logv_ () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007f7ce5a80b44 in event_warn () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#9  0x00007f7ce5a8246c in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#10 0x00007f7ce5a78114 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#11 0x00007f7cf03dadb4 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f7cf03752db in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007f7cf039c544 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007f7cf03a7468 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007f7cf03d7561 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#16 0x00007f7cfb2f36db in start_thread (arg=0x7f7c96ffd700) at pthread_create.c:463
#17 0x00007f7d05b7e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f7c97fff700 (LWP 7377)):
#0  0x00007f7d05b7ebb7 in epoll_wait (epfd=39, events=0x7f7c90002010, maxevents=32, timeout=0) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x00007f7ce5a822c5 in ?? () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#2  0x00007f7ce5a78114 in event_base_loop () from /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f7cf03dac79 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f7cf03752db in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f7cf03a7311 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f7cf03d7561 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f7cfb2f36db in start_thread (arg=0x7f7c97fff700) at pthread_create.c:463
#8  0x00007f7d05b7e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f7caa077700 (LWP 7360)):
#0  0x00007f7cf946d379 in g_mutex_lock () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f7cf9426eec in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7cf9427470 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7cf94275dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7d064b4dcb in QEventDispatcherGlib::processEvents (this=0x7f7ca0000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f7d0645603a in QEventLoop::exec (this=this@entry=0x7f7caa0769e0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#6  0x00007f7d0627d4ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#7  0x00007f7d0627ec72 in QThreadPrivate::start (arg=0x55834cd361e0) at thread/qthread_unix.cpp:361
#8  0x00007f7cfb2f36db in start_thread (arg=0x7f7caa077700) at pthread_create.c:463
#9  0x00007f7d05b7e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f7cb35ba700 (LWP 7347)):
#0  0x00007f7cf946d394 in g_mutex_unlock () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f7cf9426a18 in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7cf94273fb in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7cf94275dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7d064b4dcb in QEventDispatcherGlib::processEvents (this=0x7f7ca4000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f7d0645603a in QEventLoop::exec (this=this@entry=0x7f7cb35b99e0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#6  0x00007f7d0627d4ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#7  0x00007f7d0627ec72 in QThreadPrivate::start (arg=0x55834cc158b0) at thread/qthread_unix.cpp:361
#8  0x00007f7cfb2f36db in start_thread (arg=0x7f7cb35ba700) at pthread_create.c:463
#9  0x00007f7d05b7e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f7cb3dbb700 (LWP 7335)):
#0  0x00007f7d05b6d0b4 in __GI___libc_read (fd=14, buf=0x7f7cb3dba7d0, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f7cf946c000 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7cf9426fb7 in g_main_context_check () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7cf9427470 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7cf94275dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f7d064b4dcb in QEventDispatcherGlib::processEvents (this=0x7f7cac000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0x00007f7d0645603a in QEventLoop::exec (this=this@entry=0x7f7cb3dba9e0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#7  0x00007f7d0627d4ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#8  0x00007f7d0627ec72 in QThreadPrivate::start (arg=0x55834cc21f40) at thread/qthread_unix.cpp:361
#9  0x00007f7cfb2f36db in start_thread (arg=0x7f7cb3dbb700) at pthread_create.c:463
#10 0x00007f7d05b7e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f7cc0db8700 (LWP 7331)):
#0  0x00007f7cf9424438 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f7cf9426963 in g_main_context_prepare () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7cf94273fb in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7cf94275dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f7d064b4dcb in QEventDispatcherGlib::processEvents (this=0x7f7cb8000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f7d0645603a in QEventLoop::exec (this=this@entry=0x7f7cc0db79e0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#6  0x00007f7d0627d4ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#7  0x00007f7d0627ec72 in QThreadPrivate::start (arg=0x55834cc35850) at thread/qthread_unix.cpp:361
#8  0x00007f7cfb2f36db in start_thread (arg=0x7f7cc0db8700) at pthread_create.c:463
#9  0x00007f7d05b7e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f7cc1fc9700 (LWP 7321)):
#0  0x00007f7cf9436d90 in g_poll () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f7cf94274c9 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f7cf94275dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f7d064b4dcb in QEventDispatcherGlib::processEvents (this=0x7f7cb4000b20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f7d0645603a in QEventLoop::exec (this=this@entry=0x7f7cc1fc89b0, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#5  0x00007f7d0627d4ca in QThread::exec (this=<optimized out>) at thread/qthread.cpp:531
#6  0x00007f7d04862015 in ?? () from /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f7d0627ec72 in QThreadPrivate::start (arg=0x7f7d04ad9d80) at thread/qthread_unix.cpp:361
#8  0x00007f7cfb2f36db in start_thread (arg=0x7f7cc1fc9700) at pthread_create.c:463
#9  0x00007f7d05b7e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f7cc2e67700 (LWP 7315)):
#0  0x00007f7cfb2f99f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55834ca6f8c8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  __pthread_cond_wait_common (abstime=0x0, mutex=0x55834ca6f878, cond=0x55834ca6f8a0) at pthread_cond_wait.c:502
#2  __pthread_cond_wait (cond=0x55834ca6f8a0, mutex=0x55834ca6f878) at pthread_cond_wait.c:655
#3  0x00007f7ccc6abe6b in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#4  0x00007f7ccc6abb97 in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#5  0x00007f7cfb2f36db in start_thread (arg=0x7f7cc2e67700) at pthread_create.c:463
#6  0x00007f7d05b7e88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f7d08b51bc0 (LWP 7244)):
[KCrash Handler]
#6  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#7  0x00007f7d05a9d801 in __GI_abort () at abort.c:79
#8  0x00007f7d05a8d39a in __assert_fail_base (fmt=0x7f7d05c147d8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x7f7cc7dfd608 "kref", file=file@entry=0x7f7cc7dfd5f2 "../nouveau/pushbuf.c", line=line@entry=723, function=function@entry=0x7f7cc7dfd740 "nouveau_pushbuf_data") at assert.c:92
#9  0x00007f7d05a8d412 in __GI___assert_fail (assertion=0x7f7cc7dfd608 "kref", file=0x7f7cc7dfd5f2 "../nouveau/pushbuf.c", line=723, function=0x7f7cc7dfd740 "nouveau_pushbuf_data") at assert.c:101
#10 0x00007f7cc7dfb9ad in nouveau_pushbuf_data () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#11 0x00007f7cc7dfb966 in nouveau_pushbuf_data () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#12 0x00007f7cc7dfba3f in ?? () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#13 0x00007f7cc7dfbeaf in ?? () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#14 0x00007f7cc7dfca40 in nouveau_pushbuf_kick () from /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#15 0x00007f7ccc9dd186 in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#16 0x00007f7ccc5e3b8b in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#17 0x00007f7ccc7a820a in ?? () from /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#18 0x00007f7cce165d88 in ?? () from /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#19 0x00007f7cce5b7ec2 in QGLXContext::swapBuffers (this=0x55834d22c910, surface=0x55834cca3030) at qglxintegration.cpp:611
#20 0x00007f7d06a5fdbf in QOpenGLContext::swapBuffers (this=0x55834cfe13a0, surface=surface@entry=0x55834cc8b670) at kernel/qopenglcontext.cpp:1115
#21 0x00007f7d06d38cda in QPlatformBackingStore::composeAndFlush (this=this@entry=0x55834cc67c00, window=window@entry=0x55834cc8b660, region=..., offset=..., textures=textures@entry=0x7f7cc8007000, translucentBackground=<optimized out>) at painting/qplatformbackingstore.cpp:463
#22 0x00007f7cd21f866b in QXcbBackingStore::composeAndFlush (this=0x55834cc67c00, window=0x55834cc8b660, region=..., offset=..., textures=0x7f7cc8007000, translucentBackground=<optimized out>) at qxcbbackingstore.cpp:890
#23 0x00007f7d07260513 in QWidgetBackingStore::qt_flush (widget=0x55834cc0e130, region=..., backingStore=<optimized out>, tlw=<optimized out>, widgetTextures=<optimized out>, widgetBackingStore=<optimized out>) at kernel/qwidgetbackingstore.cpp:154
#24 0x00007f7d07261bee in QWidgetBackingStore::flush (this=this@entry=0x55834cc8c300, widget=widget@entry=0x0) at kernel/qwidgetbackingstore.cpp:1468
#25 0x00007f7d0726327b in QWidgetBackingStore::endPaint (beginPaintInfo=<synthetic pointer>, backingStore=<optimized out>, cleaned=..., this=0x55834cc8c300) at kernel/qwidgetbackingstore.cpp:363
#26 QWidgetBackingStore::doSync (this=this@entry=0x55834cc8c300) at kernel/qwidgetbackingstore.cpp:1426
#27 0x00007f7d07263a01 in QWidgetBackingStore::sync (this=0x55834cc8c300, exposedWidget=0x55834cc7b120, exposedRegion=...) at kernel/qwidgetbackingstore.cpp:1178
#28 0x00007f7d0727b96f in QWidgetPrivate::syncBackingStore (this=this@entry=0x55834cef3100, region=...) at kernel/qwidget.cpp:1970
#29 0x00007f7d072b0acc in QWidgetWindow::handleExposeEvent (this=this@entry=0x55834d032b90, event=event@entry=0x7ffd5ec21fa0) at kernel/qwidgetwindow.cpp:987
#30 0x00007f7d072b1739 in QWidgetWindow::event (this=0x55834d032b90, event=0x7ffd5ec21fa0) at kernel/qwidgetwindow.cpp:328
#31 0x00007f7d0725365c in QApplicationPrivate::notify_helper (this=this@entry=0x55834c9c7e80, receiver=receiver@entry=0x55834d032b90, e=e@entry=0x7ffd5ec21fa0) at kernel/qapplication.cpp:3736
#32 0x00007f7d0725ab90 in QApplication::notify (this=0x7ffd5ec227a0, receiver=0x55834d032b90, e=0x7ffd5ec21fa0) at kernel/qapplication.cpp:3483
#33 0x00007f7d06457d18 in QCoreApplication::notifyInternal2 (receiver=0x55834d032b90, event=0x7ffd5ec21fa0) at kernel/qcoreapplication.cpp:1060
#34 0x00007f7d06457efe in QCoreApplication::sendSpontaneousEvent (receiver=receiver@entry=0x55834d032b90, event=event@entry=0x7ffd5ec21fa0) at kernel/qcoreapplication.cpp:1462
#35 0x00007f7d06a2219a in QGuiApplicationPrivate::processExposeEvent (e=0x55834d3625e0) at kernel/qguiapplication.cpp:3066
#36 0x00007f7d06a223ed in QGuiApplicationPrivate::processWindowSystemEvent (e=e@entry=0x55834d3625e0) at kernel/qguiapplication.cpp:1902
#37 0x00007f7d069fab4b in QWindowSystemInterface::sendWindowSystemEvents (flags=flags@entry=...) at kernel/qwindowsysteminterface.cpp:1151
#38 0x00007f7cd220259a in xcbSourceDispatch (source=<optimized out>) at qxcbeventdispatcher.cpp:105
#39 0x00007f7cf9427317 in g_main_context_dispatch () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007f7cf9427550 in ?? () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#41 0x00007f7cf94275dc in g_main_context_iteration () from /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#42 0x00007f7d064b4daf in QEventDispatcherGlib::processEvents (this=0x55834ca6fcb0, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#43 0x00007f7d0645603a in QEventLoop::exec (this=this@entry=0x7ffd5ec22280, flags=..., flags@entry=...) at kernel/qeventloop.cpp:225
#44 0x00007f7d0645f170 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1363
#45 0x000055834b0958b5 in main (argc=<optimized out>, argv=<optimized out>) at ./src/main.cpp:172

Possible duplicates by query: bug 408340, bug 400635, bug 399884.

Reported using DrKonqi