Bug 414938

Summary: Konqueror crash
Product: [I don't know] kde Reporter: srvanderplas+kde
Component: generalAssignee: Unassigned bugs mailing-list <unassigned-bugs>
Status: RESOLVED DOWNSTREAM    
Severity: crash Keywords: drkonqi
Priority: NOR    
Version: unspecified   
Target Milestone: ---   
Platform: unspecified   
OS: Linux   
Latest Commit: Version Fixed In:

Description srvanderplas+kde 2019-12-08 03:39:46 UTC 
Application: kdeinit5 (5.0.97)

Qt Version: 5.9.5
Frameworks Version: 5.44.0
Operating System: Linux 5.0.0-37-generic x86_64
Distribution: Ubuntu 18.04.3 LTS

-- Information about the crash:
- What I was doing when the application crashed:
Upon submitting form fill, Konqueror crashes consistently.

The crash can be reproduced every time.

-- Backtrace:
Application: Konqueror (kdeinit5), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f06e43afe40 (LWP 17556))]

Thread 28 (Thread 0x7f069b310700 (LWP 17640)):
#0  0x00007f06e0890ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f069b30fa00, expected=0, futex_word=0x55cd37d4b578) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f06e0890ed9 in __pthread_cond_wait_common (abstime=0x7f069b30faa0, mutex=0x55cd37d4b528, cond=0x55cd37d4b550) at pthread_cond_wait.c:533
#2  0x00007f06e0890ed9 in __pthread_cond_timedwait (cond=0x55cd37d4b550, mutex=0x55cd37d4b528, abstime=0x7f069b30faa0) at pthread_cond_wait.c:667
#3  0x00007f06aac13652 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f06aabe48cc in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f06aabe5177 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f06aabe5f11 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f06e088a6db in start_thread (arg=0x7f069b310700) at pthread_create.c:463
#9  0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 27 (Thread 0x7f0631398700 (LWP 17623)):
#0  0x00007f06e0890ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f0631397be0, expected=0, futex_word=0x7f0690004684) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f06e0890ed9 in __pthread_cond_wait_common (abstime=0x7f0631397c80, mutex=0x7f0690004630, cond=0x7f0690004658) at pthread_cond_wait.c:533
#2  0x00007f06e0890ed9 in __pthread_cond_timedwait (cond=0x7f0690004658, mutex=0x7f0690004630, abstime=0x7f0631397c80) at pthread_cond_wait.c:667
#3  0x00007f06aac13652 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f06aabe9799 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f06aabe9cfb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06e088a6db in start_thread (arg=0x7f0631398700) at pthread_create.c:463
#8  0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 26 (Thread 0x7f0631b99700 (LWP 17622)):
#0  0x00007f06e0890ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f0631b98be0, expected=0, futex_word=0x7f0690004684) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f06e0890ed9 in __pthread_cond_wait_common (abstime=0x7f0631b98c80, mutex=0x7f0690004630, cond=0x7f0690004658) at pthread_cond_wait.c:533
#2  0x00007f06e0890ed9 in __pthread_cond_timedwait (cond=0x7f0690004658, mutex=0x7f0690004630, abstime=0x7f0631b98c80) at pthread_cond_wait.c:667
#3  0x00007f06aac13652 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f06aabe9799 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f06aabe9cfb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06e088a6db in start_thread (arg=0x7f0631b99700) at pthread_create.c:463
#8  0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 25 (Thread 0x7f063239a700 (LWP 17621)):
#0  0x00007f06e0890ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f0632399be0, expected=0, futex_word=0x7f0690004684) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f06e0890ed9 in __pthread_cond_wait_common (abstime=0x7f0632399c80, mutex=0x7f0690004630, cond=0x7f0690004658) at pthread_cond_wait.c:533
#2  0x00007f06e0890ed9 in __pthread_cond_timedwait (cond=0x7f0690004658, mutex=0x7f0690004630, abstime=0x7f0632399c80) at pthread_cond_wait.c:667
#3  0x00007f06aac13652 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f06aabe9799 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f06aabe9cfb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06e088a6db in start_thread (arg=0x7f063239a700) at pthread_create.c:463
#8  0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 24 (Thread 0x7f06332c8700 (LWP 17609)):
#0  0x00007f06e08909f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f0664010e3c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f06e08909f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f0664010de8, cond=0x7f0664010e10) at pthread_cond_wait.c:502
#2  0x00007f06e08909f3 in __pthread_cond_wait (cond=0x7f0664010e10, mutex=0x7f0664010de8) at pthread_cond_wait.c:655
#3  0x00007f06aabe4c95 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f06aabe5177 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f06aabe5f11 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06e088a6db in start_thread (arg=0x7f06332c8700) at pthread_create.c:463
#8  0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7f0633ac9700 (LWP 17608)):
#0  0x00007f06e08909f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f0664010e3c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f06e08909f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f0664010de8, cond=0x7f0664010e10) at pthread_cond_wait.c:502
#2  0x00007f06e08909f3 in __pthread_cond_wait (cond=0x7f0664010e10, mutex=0x7f0664010de8) at pthread_cond_wait.c:655
#3  0x00007f06aabe4c95 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f06aabe5177 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f06aabe5f11 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06e088a6db in start_thread (arg=0x7f0633ac9700) at pthread_create.c:463
#8  0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7f0660849700 (LWP 17607)):
#0  0x00007f06e0890ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f0660848a00, expected=0, futex_word=0x55cd37d4b578) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f06e0890ed9 in __pthread_cond_wait_common (abstime=0x7f0660848aa0, mutex=0x55cd37d4b528, cond=0x55cd37d4b550) at pthread_cond_wait.c:533
#2  0x00007f06e0890ed9 in __pthread_cond_timedwait (cond=0x55cd37d4b550, mutex=0x55cd37d4b528, abstime=0x7f0660848aa0) at pthread_cond_wait.c:667
#3  0x00007f06aac13652 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f06aabe48cc in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f06aabe5177 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f06aabe5f11 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f06e088a6db in start_thread (arg=0x7f0660849700) at pthread_create.c:463
#9  0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7f0661ffb700 (LWP 17586)):
#0  0x00007f06e2429187 in __GI___libc_write (fd=2, buf=0x7f0661ff7ec0, nbytes=39) at ../sysdeps/unix/sysv/linux/write.c:27
#1  0x00007f06e23a41bd in _IO_new_file_write (f=0x7f06e2705680 <_IO_2_1_stderr_>, data=0x7f0661ff7ec0, n=39) at fileops.c:1203
#2  0x00007f06e23a4b2f in new_do_write (to_do=<optimized out>, data=0x7f0661ff7ec0 "[warn] epoll_wait: Bad file descriptor\n", fp=0x7f06e2705680 <_IO_2_1_stderr_>) at fileops.c:457
#3  0x00007f06e23a4b2f in _IO_new_file_xsputn (f=0x7f06e2705680 <_IO_2_1_stderr_>, data=<optimized out>, n=39) at fileops.c:1277
#4  0x00007f06e2377707 in buffered_vfprintf (s=s@entry=0x7f06e2705680 <_IO_2_1_stderr_>, format=format@entry=0x7f06a991b6a8 "[%s] %s\n", args=args@entry=0x7f0661ffa480) at vfprintf.c:2350
#5  0x00007f06e2374726 in _IO_vfprintf_internal (s=s@entry=0x7f06e2705680 <_IO_2_1_stderr_>, format=0x7f06a991b6a8 "[%s] %s\n", ap=ap@entry=0x7f0661ffa480) at vfprintf.c:1301
#6  0x00007f06e244b4c6 in ___fprintf_chk (fp=0x7f06e2705680 <_IO_2_1_stderr_>, flag=1, format=<optimized out>) at fprintf_chk.c:35
#7  0x00007f06a99039ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007f06a9903b44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#9  0x00007f06a990546c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#10 0x00007f06a98fb114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#11 0x00007f06aabb5ab9 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f06aabb1da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007f06aabce77b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007f06aabe64d6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#16 0x00007f06e088a6db in start_thread (arg=0x7f0661ffb700) at pthread_create.c:463
#17 0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7f06627fc700 (LWP 17585)):
#0  0x00007f06e24290b4 in __GI___libc_read (fd=47, buf=0x7f06627fbc5e, nbytes=10) at ../sysdeps/unix/sysv/linux/read.c:27
#1  0x00007f06d43b4021 in pa_read () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#2  0x00007f06d4837a2e in pa_mainloop_prepare () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f06d48384a0 in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f06d4838560 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f06d48463c9 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f06d43e3318 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#7  0x00007f06e088a6db in start_thread (arg=0x7f06627fc700) at pthread_create.c:463
#8  0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f0662ffd700 (LWP 17584)):
#0  0x00007f06e08909f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f0662ffcb38) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f06e08909f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f0662ffcae8, cond=0x7f0662ffcb10) at pthread_cond_wait.c:502
#2  0x00007f06e08909f3 in __pthread_cond_wait (cond=0x7f0662ffcb10, mutex=0x7f0662ffcae8) at pthread_cond_wait.c:655
#3  0x00007f06aabda999 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f06aabda9c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f06aabb54db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f06aabb1da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06aabce77b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f06aabe64d6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f06e088a6db in start_thread (arg=0x7f0662ffd700) at pthread_create.c:463
#11 0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f06637fe700 (LWP 17583)):
#0  0x00007f06e0890ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f06637fd9d0, expected=0, futex_word=0x7f06637fdb58) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f06e0890ed9 in __pthread_cond_wait_common (abstime=0x7f06637fda70, mutex=0x7f06637fdb08, cond=0x7f06637fdb30) at pthread_cond_wait.c:533
#2  0x00007f06e0890ed9 in __pthread_cond_timedwait (cond=0x7f06637fdb30, mutex=0x7f06637fdb08, abstime=0x7f06637fda70) at pthread_cond_wait.c:667
#3  0x00007f06aac13652 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f06aabda91e in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f06aabb552b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f06aabb1da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06aabce77b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f06aabe64d6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f06e088a6db in start_thread (arg=0x7f06637fe700) at pthread_create.c:463
#11 0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f0663fff700 (LWP 17582)):
#0  0x00007f06e08909f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cd37d5a448) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f06e08909f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55cd37d5a388, cond=0x55cd37d5a420) at pthread_cond_wait.c:502
#2  0x00007f06e08909f3 in __pthread_cond_wait (cond=0x55cd37d5a420, mutex=0x55cd37d5a388) at pthread_cond_wait.c:655
#3  0x00007f06ab36c060 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f06aabe5f11 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f06e088a6db in start_thread (arg=0x7f0663fff700) at pthread_create.c:463
#7  0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f06797fa700 (LWP 17581)):
#0  0x00007f06e0890ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f06797f9a00, expected=0, futex_word=0x55cd37d4b578) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f06e0890ed9 in __pthread_cond_wait_common (abstime=0x7f06797f9aa0, mutex=0x55cd37d4b528, cond=0x55cd37d4b550) at pthread_cond_wait.c:533
#2  0x00007f06e0890ed9 in __pthread_cond_timedwait (cond=0x55cd37d4b550, mutex=0x55cd37d4b528, abstime=0x7f06797f9aa0) at pthread_cond_wait.c:667
#3  0x00007f06aac13652 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f06aabe48cc in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f06aabe5177 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f06aabe5f11 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f06e088a6db in start_thread (arg=0x7f06797fa700) at pthread_create.c:463
#9  0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f0678ff9700 (LWP 17580)):
#0  0x00007f06e08909f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f0678ff8b38) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f06e08909f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f0678ff8ae8, cond=0x7f0678ff8b10) at pthread_cond_wait.c:502
#2  0x00007f06e08909f3 in __pthread_cond_wait (cond=0x7f0678ff8b10, mutex=0x7f0678ff8ae8) at pthread_cond_wait.c:655
#3  0x00007f06aabda999 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f06aabda9c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f06aabb54db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f06aabb1da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06aabce77b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f06aabe64d6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f06e088a6db in start_thread (arg=0x7f0678ff9700) at pthread_create.c:463
#11 0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f0679ffb700 (LWP 17579)):
#0  0x00007f06e24496ac in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f06e244b474 in ___fprintf_chk (fp=0x7f06e27068b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f06a991b6a8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f06a99039ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f06a9903b44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f06a990546c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f06a98fb114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f06aabb5bf3 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06aabb1da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f06aabce77b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f06aa46c978 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f06aa46cf2b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f06aabe6588 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007f06e088a6db in start_thread (arg=0x7f0679ffb700) at pthread_create.c:463
#14 0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f067a7fc700 (LWP 17578)):
#0  0x00007f06e0890ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f067a7fb5f0, expected=0, futex_word=0x7f067a7fb778) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f06e0890ed9 in __pthread_cond_wait_common (abstime=0x7f067a7fb690, mutex=0x7f067a7fb728, cond=0x7f067a7fb750) at pthread_cond_wait.c:533
#2  0x00007f06e0890ed9 in __pthread_cond_timedwait (cond=0x7f067a7fb750, mutex=0x7f067a7fb728, abstime=0x7f067a7fb690) at pthread_cond_wait.c:667
#3  0x00007f06aac13652 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f06aabda91e in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f06aabb552b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f06aabb1da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06aabce77b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f06aa46c8c8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f06aa46cf1b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f06aabe6588 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f06e088a6db in start_thread (arg=0x7f067a7fc700) at pthread_create.c:463
#13 0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f067affd700 (LWP 17577)):
#0  0x00007f06e08909f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f067affc758) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f06e08909f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f067affc708, cond=0x7f067affc730) at pthread_cond_wait.c:502
#2  0x00007f06e08909f3 in __pthread_cond_wait (cond=0x7f067affc730, mutex=0x7f067affc708) at pthread_cond_wait.c:655
#3  0x00007f06aabda999 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f06aabda9c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f06aabb54db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f06aabb1da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06aabce77b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f06aa46c818 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f06aa46cf0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f06aabe6588 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f06e088a6db in start_thread (arg=0x7f067affd700) at pthread_create.c:463
#13 0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f067b7fe700 (LWP 17576)):
#0  0x00007f06e08909f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f067b7fd758) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f06e08909f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f067b7fd708, cond=0x7f067b7fd730) at pthread_cond_wait.c:502
#2  0x00007f06e08909f3 in __pthread_cond_wait (cond=0x7f067b7fd730, mutex=0x7f067b7fd708) at pthread_cond_wait.c:655
#3  0x00007f06aabda999 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f06aabda9c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f06aabb54db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f06aabb1da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06aabce77b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f06aa46c768 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f06aa46cefb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f06aabe6588 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f06e088a6db in start_thread (arg=0x7f067b7fe700) at pthread_create.c:463
#13 0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f067bfff700 (LWP 17575)):
#0  0x00007f06e24496ac in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f06e244b474 in ___fprintf_chk (fp=0x7f06e27068b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f06a991b6a8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f06a99039ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f06a9903b44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f06a990546c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f06a98fb114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f06aabb5b0d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06aabb1da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f06aabce77b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f06aa46c6b8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f06aa46ceeb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f06aabe6588 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007f06e088a6db in start_thread (arg=0x7f067bfff700) at pthread_create.c:463
#14 0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f06988fe700 (LWP 17574)):
#0  0x00007f06e08909f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f06988fd758) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f06e08909f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f06988fd708, cond=0x7f06988fd730) at pthread_cond_wait.c:502
#2  0x00007f06e08909f3 in __pthread_cond_wait (cond=0x7f06988fd730, mutex=0x7f06988fd708) at pthread_cond_wait.c:655
#3  0x00007f06aabda999 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f06aabda9c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f06aabb54db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f06aabb1da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06aabce77b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f06aa46c608 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f06aa46cedb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f06aabe6588 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f06e088a6db in start_thread (arg=0x7f06988fe700) at pthread_create.c:463
#13 0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f06990ff700 (LWP 17573)):
#0  0x00007f06e0890ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f06990febe0, expected=0, futex_word=0x7f0690004684) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f06e0890ed9 in __pthread_cond_wait_common (abstime=0x7f06990fec80, mutex=0x7f0690004630, cond=0x7f0690004658) at pthread_cond_wait.c:533
#2  0x00007f06e0890ed9 in __pthread_cond_timedwait (cond=0x7f0690004658, mutex=0x7f0690004630, abstime=0x7f06990fec80) at pthread_cond_wait.c:667
#3  0x00007f06aac13652 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f06aabe9799 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f06aabe9cfb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06e088a6db in start_thread (arg=0x7f06990ff700) at pthread_create.c:463
#8  0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f0699900700 (LWP 17572)):
#0  0x00007f06e0890ed9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f06998ffbe0, expected=0, futex_word=0x7f0690004684) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f06e0890ed9 in __pthread_cond_wait_common (abstime=0x7f06998ffc80, mutex=0x7f0690004630, cond=0x7f0690004658) at pthread_cond_wait.c:533
#2  0x00007f06e0890ed9 in __pthread_cond_timedwait (cond=0x7f0690004658, mutex=0x7f0690004630, abstime=0x7f06998ffc80) at pthread_cond_wait.c:667
#3  0x00007f06aac13652 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f06aabe9799 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f06aabe9cfb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06e088a6db in start_thread (arg=0x7f0699900700) at pthread_create.c:463
#8  0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f069a30e700 (LWP 17571)):
#0  0x00007f06e08909f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f069a30db38) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f06e08909f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f069a30dae8, cond=0x7f069a30db10) at pthread_cond_wait.c:502
#2  0x00007f06e08909f3 in __pthread_cond_wait (cond=0x7f069a30db10, mutex=0x7f069a30dae8) at pthread_cond_wait.c:655
#3  0x00007f06aabda999 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f06aabda9c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f06aabb54db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f06aabb1da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f06aabce77b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f06aabe64d6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f06e088a6db in start_thread (arg=0x7f069a30e700) at pthread_create.c:463
#11 0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f069ab0f700 (LWP 17570)):
#0  0x00007f06e24496d9 in __lll_unlock_wake_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:341
#1  0x00007f06e244b50c in _IO_acquire_lock_clear_flags2_fct (p=<synthetic pointer>) at ../libio/libioP.h:807
#2  0x00007f06e244b50c in ___fprintf_chk (fp=0x7f06e2705680 <_IO_2_1_stderr_>, flag=1, format=<optimized out>) at fprintf_chk.c:30
#3  0x00007f06a99039ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f06a9903b44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f06a990546c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f06a98fb114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#7  0x00007f06aabb5ab9 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f06aabb1da8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f06aabce77b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f06aabe64d6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f06aabe25eb in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f06e088a6db in start_thread (arg=0x7f069ab0f700) at pthread_create.c:463
#13 0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f06bebb5700 (LWP 17559)):
#0  0x00007f06e242dbf9 in __GI___poll (fds=0x7f06b0004db0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f06dec205c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f06dec206dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f06e29ed99b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f06e29929fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f06e27b123a in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f06da17cd45 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f06e27b617d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f06e088a6db in start_thread (arg=0x7f06bebb5700) at pthread_create.c:463
#9  0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f06bf84d700 (LWP 17558)):
#0  0x00007f06e08909f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55cd376cff28) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f06e08909f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55cd376cfed8, cond=0x55cd376cff00) at pthread_cond_wait.c:502
#2  0x00007f06e08909f3 in __pthread_cond_wait (cond=0x55cd376cff00, mutex=0x55cd376cfed8) at pthread_cond_wait.c:655
#3  0x00007f06c5223a2b in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#4  0x00007f06c5223757 in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#5  0x00007f06e088a6db in start_thread (arg=0x7f06bf84d700) at pthread_create.c:463
#6  0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f06cd04a700 (LWP 17557)):
#0  0x00007f06e242dbf9 in __GI___poll (fds=0x7f06cd049d28, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f06e3814747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f06e381636a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f06cf7cd5e9 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f06e27b617d in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f06e088a6db in start_thread (arg=0x7f06cd04a700) at pthread_create.c:463
#6  0x00007f06e243a88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f06e43afe40 (LWP 17556)):
[KCrash Handler]
#6  0x00007f06e2357e97 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#7  0x00007f06e2359801 in __GI_abort () at abort.c:79
#8  0x00007f06e234939a in __assert_fail_base (fmt=0x7f06e24d07d8 "%s%s%s:%u: %s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x7f06c041d608 "kref", file=file@entry=0x7f06c041d5f2 "../nouveau/pushbuf.c", line=line@entry=723, function=function@entry=0x7f06c041d740 "nouveau_pushbuf_data") at assert.c:92
#9  0x00007f06e2349412 in __GI___assert_fail (assertion=0x7f06c041d608 "kref", file=0x7f06c041d5f2 "../nouveau/pushbuf.c", line=723, function=0x7f06c041d740 "nouveau_pushbuf_data") at assert.c:101
#10 0x00007f06c041b9ad in  () at /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#11 0x00007f06c041b966 in nouveau_pushbuf_data () at /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#12 0x00007f06c041ba3f in  () at /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#13 0x00007f06c041beaf in  () at /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#14 0x00007f06c041ca40 in nouveau_pushbuf_kick () at /usr/lib/x86_64-linux-gnu/libdrm_nouveau.so.2
#15 0x00007f06c4e47eb6 in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#16 0x00007f06c4f7385b in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#17 0x00007f06c4b4245a in  () at /usr/lib/x86_64-linux-gnu/dri/nouveau_dri.so
#18 0x00007f06c6b65e53 in glPrimitiveBoundingBox () at /usr/lib/x86_64-linux-gnu/libGLX_mesa.so.0
#19 0x00007f06cc028902 in  () at /usr/lib/x86_64-linux-gnu/qt5/plugins/xcbglintegrations/libqxcb-glx-integration.so
#20 0x00007f06e2f9006a in QOpenGLContext::swapBuffers(QSurface*) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#21 0x00007f06e3244a7f in QPlatformBackingStore::composeAndFlush(QWindow*, QRegion const&, QPoint const&, QPlatformTextureList*, QOpenGLContext*, bool) () at /usr/lib/x86_64-linux-gnu/libQt5Gui.so.5
#22 0x00007f06cf7eee97 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#23 0x00007f06e0e06077 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#24 0x00007f06e0e0777e in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#25 0x00007f06e0e08e79 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#26 0x00007f06e0e090a5 in  () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007f06e0e2067f in QWidgetPrivate::syncBackingStore() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f06e0e381b8 in QWidget::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007f06e0f4bc6b in QMainWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007f06d869cb87 in KMainWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#31 0x00007f06d86e19e5 in KXmlGuiWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libKF5XmlGui.so.5
#32 0x00007f06d2cf6496 in KonqMainWindow::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libkdeinit5_konqueror.so
#33 0x00007f06e0df983c in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#34 0x00007f06e0e01104 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#35 0x00007f06e29949c8 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007f06e299713d in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007f06e29ee353 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007f06dec20417 in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#39 0x00007f06dec20650 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#40 0x00007f06dec206dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#41 0x00007f06e29ed97f in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#42 0x00007f06e29929fa in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#43 0x00007f06e299baa4 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#44 0x00007f06d2d3a574 in kdemain () at /usr/lib/x86_64-linux-gnu/libkdeinit5_konqueror.so
#45 0x000055cd35eb869d in  ()
#46 0x000055cd35eb9c8b in  ()
#47 0x000055cd35eba568 in  ()
#48 0x000055cd35eb500c in  ()
#49 0x00007f06e233ab97 in __libc_start_main (main=0x55cd35eb46c0, argc=1, argv=0x7ffe5ae638b8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffe5ae638a8) at ../csu/libc-start.c:310
#50 0x000055cd35eb5c7a in _start ()

Possible duplicates by query: bug 386263, bug 382799.

Reported using DrKonqi
Comment 1 Christoph Feck 2019-12-27 17:03:47 UTC 
Crash is in nouveau OpenGL driver.