Application: konqueror (5.0.97)

Qt Version: 5.12.4
Frameworks Version: 5.62.0
Operating System: Linux 5.3.0-51-generic x86_64
Distribution: Ubuntu 19.10

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

Right click on a link on any web page, select "Open link in a new window" in popup menu.
In the information message box appeared with question "Open <link>?" select "Cancel" button.
Konqueror will crash immediately.

The crash can be reproduced every time.

-- Backtrace:
Application: Konqueror (konqueror), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f8f8e0cc680 (LWP 28824))]

Thread 18 (Thread 0x7f8f0a7fc700 (LWP 30533)):
#0  0x00007f8f909ae6e0 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f8f0a7fbb30, clockid=<optimized out>, expected=0, futex_word=0x7f8f0a7fbc78) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  0x00007f8f909ae6e0 in __pthread_cond_wait_common (abstime=0x7f8f0a7fbb30, clockid=<optimized out>, mutex=0x7f8f0a7fbc28, cond=0x7f8f0a7fbc50) at pthread_cond_wait.c:520
#2  0x00007f8f909ae6e0 in __pthread_cond_timedwait (cond=0x7f8f0a7fbc50, mutex=0x7f8f0a7fbc28, abstime=0x7f8f0a7fbb30) at pthread_cond_wait.c:656
#3  0x00007f8f7395d10b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f8f7395dab2 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f8f7395dba6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f8f7391f705 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8f73921c6b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8f73922258 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8f7395fc75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8f909a7669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007f8f940ea323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f8f097fa700 (LWP 28923)):
#0  0x00007f8f909ae6e0 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f8f097f9b30, clockid=<optimized out>, expected=0, futex_word=0x7f8f097f9c78) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  0x00007f8f909ae6e0 in __pthread_cond_wait_common (abstime=0x7f8f097f9b30, clockid=<optimized out>, mutex=0x7f8f097f9c28, cond=0x7f8f097f9c50) at pthread_cond_wait.c:520
#2  0x00007f8f909ae6e0 in __pthread_cond_timedwait (cond=0x7f8f097f9c50, mutex=0x7f8f097f9c28, abstime=0x7f8f097f9b30) at pthread_cond_wait.c:656
#3  0x00007f8f7395d10b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f8f7395dab2 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f8f7395dba6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f8f7391f705 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8f73921f96 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8f73922258 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8f7395fc75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8f909a7669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007f8f940ea323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f8f0b7fe700 (LWP 28919)):
#0  0x00007f8f909ae2c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f8f0b7fdc88) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f8f909ae2c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f8f0b7fdc38, cond=0x7f8f0b7fdc60) at pthread_cond_wait.c:508
#2  0x00007f8f909ae2c6 in __pthread_cond_wait (cond=0x7f8f0b7fdc60, mutex=0x7f8f0b7fdc38) at pthread_cond_wait.c:638
#3  0x00007f8f7395d03d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f8f7395dac0 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f8f7395db63 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f8f7391f718 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8f73921c6b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8f739222b8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8f7395fc75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8f909a7669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007f8f940ea323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f8f227fc700 (LWP 28869)):
#0  0x00007f8f909ae2c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f8f227fbc88) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f8f909ae2c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f8f227fbc38, cond=0x7f8f227fbc60) at pthread_cond_wait.c:508
#2  0x00007f8f909ae2c6 in __pthread_cond_wait (cond=0x7f8f227fbc60, mutex=0x7f8f227fbc38) at pthread_cond_wait.c:638
#3  0x00007f8f7395d03d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f8f7395dac0 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f8f7395db63 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f8f7391f718 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8f73921f96 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8f73922318 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8f7395fc75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8f909a7669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007f8f940ea323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f8f22ffd700 (LWP 28868)):
#0  0x00007f8f9405f8eb in __lll_lock_wait_private (futex=0x7f8f941b54b0 <_IO_stdfile_2_lock>) at ./lowlevellock.c:35
#1  0x00007f8f94045146 in buffered_vfprintf (s=s@entry=0x7f8f941b35c0 <_IO_2_1_stderr_>, format=format@entry=0x7f8f7e5a26a8 "[%s] %s\n", args=args@entry=0x7f8f22ffc5a0, mode_flags=mode_flags@entry=2) at vfprintf-internal.c:2381
#2  0x00007f8f94041df4 in __vfprintf_internal (s=0x7f8f941b35c0 <_IO_2_1_stderr_>, format=0x7f8f7e5a26a8 "[%s] %s\n", ap=ap@entry=0x7f8f22ffc5a0, mode_flags=2) at vfprintf-internal.c:1346
#3  0x00007f8f940f9483 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at fprintf_chk.c:33
#4  0x00007f8f7e58a9ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f8f7e58ab44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f8f7e58c46c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#7  0x00007f8f7e582114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007f8f73963564 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8f738fcf0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8f7392ed9b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f8f7395fc75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f8f909a7669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#13 0x00007f8f940ea323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f8f23fff700 (LWP 28866)):
#0  0x00007f8f940d92ac in __GI___libc_read (nbytes=10, buf=0x7f8f23ffeb9e, fd=69) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007f8f940d92ac in __GI___libc_read (fd=69, buf=0x7f8f23ffeb9e, nbytes=10) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f8f6c593955 in pa_read () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-13.0.so
#3  0x00007f8f6c615406 in pa_mainloop_prepare () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f8f6c615ea4 in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f8f6c615f60 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f8f6c62410d in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#7  0x00007f8f6c5c237c in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-13.0.so
#8  0x00007f8f909a7669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9  0x00007f8f940ea323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f8f4cff9700 (LWP 28865)):
#0  0x00007f8f9405f8eb in __lll_lock_wait_private (futex=0x7f8f941b54b0 <_IO_stdfile_2_lock>) at ./lowlevellock.c:35
#1  0x00007f8f94045146 in buffered_vfprintf (s=s@entry=0x7f8f941b35c0 <_IO_2_1_stderr_>, format=format@entry=0x7f8f7e5a26a8 "[%s] %s\n", args=args@entry=0x7f8f4cff85a0, mode_flags=mode_flags@entry=2) at vfprintf-internal.c:2381
#2  0x00007f8f94041df4 in __vfprintf_internal (s=0x7f8f941b35c0 <_IO_2_1_stderr_>, format=0x7f8f7e5a26a8 "[%s] %s\n", ap=ap@entry=0x7f8f4cff85a0, mode_flags=2) at vfprintf-internal.c:1346
#3  0x00007f8f940f9483 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at fprintf_chk.c:33
#4  0x00007f8f7e58a9ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f8f7e58ab44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f8f7e58c46c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#7  0x00007f8f7e582114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007f8f7396347d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8f738fcf0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8f7392ed9b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f8f7395fc75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f8f909a7669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#13 0x00007f8f940ea323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f8f4d7fa700 (LWP 28864)):
#0  0x00007f8f909ae6e0 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f8f4d7f9b30, clockid=<optimized out>, expected=0, futex_word=0x7f8f4d7f9c78) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  0x00007f8f909ae6e0 in __pthread_cond_wait_common (abstime=0x7f8f4d7f9b30, clockid=<optimized out>, mutex=0x7f8f4d7f9c28, cond=0x7f8f4d7f9c50) at pthread_cond_wait.c:520
#2  0x00007f8f909ae6e0 in __pthread_cond_timedwait (cond=0x7f8f4d7f9c50, mutex=0x7f8f4d7f9c28, abstime=0x7f8f4d7f9b30) at pthread_cond_wait.c:656
#3  0x00007f8f7395d10b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f8f7395dab2 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f8f738dace8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f8f738fcf0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8f7392ed9b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8f7395fc75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8f909a7669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#10 0x00007f8f940ea323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f8f4dffb700 (LWP 28863)):
#0  0x00007f8f909ae6e0 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f8f4dffab30, clockid=<optimized out>, expected=0, futex_word=0x7f8f4dffac78) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  0x00007f8f909ae6e0 in __pthread_cond_wait_common (abstime=0x7f8f4dffab30, clockid=<optimized out>, mutex=0x7f8f4dffac28, cond=0x7f8f4dffac50) at pthread_cond_wait.c:520
#2  0x00007f8f909ae6e0 in __pthread_cond_timedwait (cond=0x7f8f4dffac50, mutex=0x7f8f4dffac28, abstime=0x7f8f4dffab30) at pthread_cond_wait.c:656
#3  0x00007f8f7395d10b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f8f7395dab2 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f8f738dace8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f8f738fcf0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8f7392ed9b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8f7395fc75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8f909a7669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#10 0x00007f8f940ea323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f8f4e7fc700 (LWP 28862)):
#0  0x00007f8f909ae2c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x563139c4dc78) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f8f909ae2c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x563139c4dbb8, cond=0x563139c4dc50) at pthread_cond_wait.c:508
#2  0x00007f8f909ae2c6 in __pthread_cond_wait (cond=0x563139c4dc50, mutex=0x563139c4dbb8) at pthread_cond_wait.c:638
#3  0x00007f8f7395d03d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f8f74233598 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f8f73930243 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f8f7395fc75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8f909a7669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#8  0x00007f8f940ea323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f8f4effd700 (LWP 28861)):
#0  0x00007f8f909ae2c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f8f4effcc88) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f8f909ae2c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f8f4effcc38, cond=0x7f8f4effcc60) at pthread_cond_wait.c:508
#2  0x00007f8f909ae2c6 in __pthread_cond_wait (cond=0x7f8f4effcc60, mutex=0x7f8f4effcc38) at pthread_cond_wait.c:638
#3  0x00007f8f7395d03d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f8f7395dac0 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f8f7395db63 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f8f7391f718 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8f73921f96 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8f739222b8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8f7395fc75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8f909a7669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007f8f940ea323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f8f657fa700 (LWP 28857)):
#0  0x00007f8f9405f8eb in __lll_lock_wait_private (futex=0x7f8f941b54b0 <_IO_stdfile_2_lock>) at ./lowlevellock.c:35
#1  0x00007f8f94045146 in buffered_vfprintf (s=s@entry=0x7f8f941b35c0 <_IO_2_1_stderr_>, format=format@entry=0x7f8f7e5a26a8 "[%s] %s\n", args=args@entry=0x7f8f657f9580, mode_flags=mode_flags@entry=2) at vfprintf-internal.c:2381
#2  0x00007f8f94041df4 in __vfprintf_internal (s=0x7f8f941b35c0 <_IO_2_1_stderr_>, format=0x7f8f7e5a26a8 "[%s] %s\n", ap=ap@entry=0x7f8f657f9580, mode_flags=2) at vfprintf-internal.c:1346
#3  0x00007f8f940f9483 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at fprintf_chk.c:33
#4  0x00007f8f7e58a9ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f8f7e58ab44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f8f7e58c46c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#7  0x00007f8f7e582114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007f8f73963429 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8f738fcf0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8f732acc18 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f8f7392ed9b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f8f7395fc75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007f8f909a7669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#14 0x00007f8f940ea323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f8f667fc700 (LWP 28855)):
#0  0x00007f8f909ae6e0 in futex_abstimed_wait_cancelable (private=<optimized out>, abstime=0x7f8f667fbb30, clockid=<optimized out>, expected=0, futex_word=0x7f8f667fbc78) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  0x00007f8f909ae6e0 in __pthread_cond_wait_common (abstime=0x7f8f667fbb30, clockid=<optimized out>, mutex=0x7f8f667fbc28, cond=0x7f8f667fbc50) at pthread_cond_wait.c:520
#2  0x00007f8f909ae6e0 in __pthread_cond_timedwait (cond=0x7f8f667fbc50, mutex=0x7f8f667fbc28, abstime=0x7f8f667fbb30) at pthread_cond_wait.c:656
#3  0x00007f8f7395d10b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f8f7395dab2 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f8f7395dba6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f8f7391f705 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8f73921f96 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8f73922258 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8f7395fc75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8f909a7669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007f8f940ea323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f8f66ffd700 (LWP 28854)):
#0  0x00007f8f940d934f in __GI___libc_write (nbytes=39, buf=0x7f8f66ff9fc0, fd=2) at ../sysdeps/unix/sysv/linux/write.c:26
#1  0x00007f8f940d934f in __GI___libc_write (fd=2, buf=0x7f8f66ff9fc0, nbytes=39) at ../sysdeps/unix/sysv/linux/write.c:24
#2  0x00007f8f94059fed in _IO_new_file_write (f=0x7f8f941b35c0 <_IO_2_1_stderr_>, data=0x7f8f66ff9fc0, n=39) at fileops.c:1180
#3  0x00007f8f9405a908 in new_do_write (to_do=<optimized out>, data=0x7f8f66ff9fc0 "[warn] epoll_wait: Bad file descriptor\n", fp=0x7f8f941b35c0 <_IO_2_1_stderr_>) at libioP.h:948
#4  0x00007f8f9405a908 in _IO_new_file_xsputn (n=39, data=<optimized out>, f=<optimized out>) at fileops.c:1259
#5  0x00007f8f9405a908 in _IO_new_file_xsputn (f=0x7f8f941b35c0 <_IO_2_1_stderr_>, data=<optimized out>, n=39) at fileops.c:1201
#6  0x00007f8f94045023 in buffered_vfprintf (s=s@entry=0x7f8f941b35c0 <_IO_2_1_stderr_>, format=format@entry=0x7f8f7e5a26a8 "[%s] %s\n", args=args@entry=0x7f8f66ffc580, mode_flags=mode_flags@entry=2) at ../libio/libioP.h:948
#7  0x00007f8f94041df4 in __vfprintf_internal (s=0x7f8f941b35c0 <_IO_2_1_stderr_>, format=0x7f8f7e5a26a8 "[%s] %s\n", ap=ap@entry=0x7f8f66ffc580, mode_flags=2) at vfprintf-internal.c:1346
#8  0x00007f8f940f9483 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at fprintf_chk.c:33
#9  0x00007f8f7e58a9ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#10 0x00007f8f7e58ab44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#11 0x00007f8f7e58c46c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#12 0x00007f8f7e582114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#13 0x00007f8f73963564 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007f8f738fcf0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007f8f73925e38 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#16 0x00007f8f7392ed9b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#17 0x00007f8f7395fc75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#18 0x00007f8f909a7669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#19 0x00007f8f940ea323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f8f677fe700 (LWP 28853)):
#0  0x00007f8f9405f8eb in __lll_lock_wait_private (futex=0x7f8f941b54b0 <_IO_stdfile_2_lock>) at ./lowlevellock.c:35
#1  0x00007f8f94045146 in buffered_vfprintf (s=s@entry=0x7f8f941b35c0 <_IO_2_1_stderr_>, format=format@entry=0x7f8f7e5a26a8 "[%s] %s\n", args=args@entry=0x7f8f677fd5a0, mode_flags=mode_flags@entry=2) at vfprintf-internal.c:2381
#2  0x00007f8f94041df4 in __vfprintf_internal (s=0x7f8f941b35c0 <_IO_2_1_stderr_>, format=0x7f8f7e5a26a8 "[%s] %s\n", ap=ap@entry=0x7f8f677fd5a0, mode_flags=2) at vfprintf-internal.c:1346
#3  0x00007f8f940f9483 in ___fprintf_chk (fp=<optimized out>, flag=<optimized out>, format=<optimized out>) at fprintf_chk.c:33
#4  0x00007f8f7e58a9ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f8f7e58ab44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f8f7e58c46c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#7  0x00007f8f7e582114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007f8f73963429 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8f738fcf0b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8f7392ed9b in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f8f7395fc75 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f8f909a7669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#13 0x00007f8f940ea323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f8f85786700 (LWP 28828)):
#0  0x00007f8f901425fd in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f8f90143c1c in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8f90144f6b in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8f901459db in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f8f90145be3 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f8f92179653 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8f921205cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f8f91f59a45 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8f93126efa in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f8f91f5ac92 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f8f909a7669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#11 0x00007f8f940ea323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f8f87338700 (LWP 28827)):
#0  0x00007f8f909ae2c6 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x56313972ad48) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  0x00007f8f909ae2c6 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x56313972acf8, cond=0x56313972ad20) at pthread_cond_wait.c:508
#2  0x00007f8f909ae2c6 in __pthread_cond_wait (cond=0x56313972ad20, mutex=0x56313972acf8) at pthread_cond_wait.c:638
#3  0x00007f8f8781eaab in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f8f8781e6cb in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f8f909a7669 in start_thread (arg=<optimized out>) at pthread_create.c:479
#6  0x00007f8f940ea323 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f8f8e0cc680 (LWP 28824)):
[KCrash Handler]
#6  0x00007f8f9420890a in  () at /usr/lib/x86_64-linux-gnu/libkdeinit5_konqueror.so
#7  0x00007f8f93aa1f16 in KRun::mimeTypeDetermined(QString const&) () at /usr/lib/x86_64-linux-gnu/libKF5KIOWidgets.so.5
#8  0x00007f8f93c6a03f in KParts::BrowserRun::slotBrowserMimetype(KIO::Job*, QString const&) () at /usr/lib/x86_64-linux-gnu/libKF5Parts.so.5
#9  0x00007f8f9214d558 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f8f93914c4b in KIO::TransferJob::mimetype(KIO::Job*, QString const&) () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#11 0x00007f8f93914e76 in KIO::TransferJob::slotMimetype(QString const&) () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#12 0x00007f8f9214d558 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f8f938d7039 in KIO::SlaveInterface::mimeType(QString const&) () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#14 0x00007f8f938d946c in KIO::SlaveInterface::dispatch(int, QByteArray const&) () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#15 0x00007f8f938d71bf in KIO::SlaveInterface::dispatch() () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#16 0x00007f8f938e0e22 in KIO::Slave::gotInput() () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#17 0x00007f8f9214d558 in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f8f9385a70e in  () at /usr/lib/x86_64-linux-gnu/libKF5KIOCore.so.5
#19 0x00007f8f9214de4a in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007f8f92b91a86 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#21 0x00007f8f92b9ae00 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f8f92121a2a in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007f8f921246a8 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#24 0x00007f8f9217a037 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f8f901458bd in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#26 0x00007f8f90145b40 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#27 0x00007f8f90145be3 in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f8f92179635 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f8f921205cb in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f8f92128336 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f8f942987ba in kdemain () at /usr/lib/x86_64-linux-gnu/libkdeinit5_konqueror.so
#32 0x00007f8f93fef1e3 in __libc_start_main (main=0x563137c88060, argc=1, argv=0x7ffdc4b93f68, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffdc4b93f58) at ../csu/libc-start.c:308
#33 0x0000563137c8809e in _start ()
[Inferior 1 (process 28824) detached]

Reported using DrKonqi