Application: konqueror (5.0.97)

Qt Version: 5.12.3
Frameworks Version: 5.59.0
Operating System: Linux 5.0.0-16-generic x86_64
Distribution: KDE neon User Edition 5.16

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

Konqueror does not quit gracefully and crashes when the last tab is closed

The crash can be reproduced every time.

-- Backtrace:
Application: Konqueror (konqueror), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f8da16aedc0 (LWP 30895))]

Thread 20 (Thread 0x7f8d44936700 (LWP 30937)):
#0  0x00007f8da0efb6ac in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f8da0efd474 in ___fprintf_chk (fp=0x7f8da11b88b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f8d691b76a8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f8d6919f9ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f8d6919fb44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f8d691a146c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f8d69197114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f8d6c39dc79 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8d6c3382db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8d6c36a311 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8d6c39a561 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8d960266db in start_thread (arg=0x7f8d44936700) at pthread_create.c:463
#11 0x00007f8da0eec88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f8d45137700 (LWP 30924)):
#0  0x00007f8d9602c9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f8d45136c48) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f8d9602c9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f8d45136bf8, cond=0x7f8d45136c20) at pthread_cond_wait.c:502
#2  0x00007f8d9602c9f3 in __pthread_cond_wait (cond=0x7f8d45136c20, mutex=0x7f8d45136bf8) at pthread_cond_wait.c:655
#3  0x00007f8d6c397a49 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f8d6c398478 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f8d6c39850f in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f8d6c358fc8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8d6c35b7f6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8d6c35bb34 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8d6c39a561 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8d960266db in start_thread (arg=0x7f8d45137700) at pthread_create.c:463
#11 0x00007f8da0eec88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f8d45b38700 (LWP 30923)):
#0  0x00007f8d9602ced9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f8d45b37a50, expected=0, futex_word=0x7f8d45b37c38) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f8d9602ced9 in __pthread_cond_wait_common (abstime=0x7f8d45b37af0, mutex=0x7f8d45b37be8, cond=0x7f8d45b37c10) at pthread_cond_wait.c:533
#2  0x00007f8d9602ced9 in __pthread_cond_timedwait (cond=0x7f8d45b37c10, mutex=0x7f8d45b37be8, abstime=0x7f8d45b37af0) at pthread_cond_wait.c:667
#3  0x00007f8d6c397b17 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f8d6c39846a in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f8d6c398552 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f8d6c358fb1 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8d6c35b4c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8d6c35bab4 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8d6c39a561 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8d960266db in start_thread (arg=0x7f8d45b38700) at pthread_create.c:463
#11 0x00007f8da0eec88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f8d46973700 (LWP 30922)):
#0  0x00007f8d9602a4a7 in __pthread_mutex_unlock_full (mutex=0x55b763d2df70, decr=<optimized out>) at pthread_mutex_unlock.c:274
#1  0x00007f8d505cc5fe in pa_mutex_unlock () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#2  0x00007f8d58067473 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f8d58058e40 in pa_mainloop_poll () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f8d580594d0 in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f8d58059560 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f8d580673c9 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#7  0x00007f8d505cd318 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-11.1.so
#8  0x00007f8d960266db in start_thread (arg=0x7f8d46973700) at pthread_create.c:463
#9  0x00007f8da0eec88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f8d477fe700 (LWP 30921)):
#0  0x00007f8da0efb6ac in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f8da0efd474 in ___fprintf_chk (fp=0x7f8da11b88b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f8d691b76a8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f8d6919f9ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f8d6919fb44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f8d691a146c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f8d69197114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f8d6c39dccd in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8d6c3382db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8d6c36a311 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8d6c39a561 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8d960266db in start_thread (arg=0x7f8d477fe700) at pthread_create.c:463
#11 0x00007f8da0eec88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f8d47fff700 (LWP 30920)):
#0  0x00007f8d9602ced9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f8d47ffea40, expected=0, futex_word=0x7f8d47ffec28) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f8d9602ced9 in __pthread_cond_wait_common (abstime=0x7f8d47ffeae0, mutex=0x7f8d47ffebd8, cond=0x7f8d47ffec00) at pthread_cond_wait.c:533
#2  0x00007f8d9602ced9 in __pthread_cond_timedwait (cond=0x7f8d47ffec00, mutex=0x7f8d47ffebd8, abstime=0x7f8d47ffeae0) at pthread_cond_wait.c:667
#3  0x00007f8d6c397b17 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f8d6c39846a in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f8d6c316a80 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f8d6c3382db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8d6c36a311 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8d6c39a561 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8d960266db in start_thread (arg=0x7f8d47fff700) at pthread_create.c:463
#10 0x00007f8da0eec88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f8d50ff9700 (LWP 30919)):
#0  0x00007f8d9602ced9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f8d50ff8a40, expected=0, futex_word=0x7f8d50ff8c28) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f8d9602ced9 in __pthread_cond_wait_common (abstime=0x7f8d50ff8ae0, mutex=0x7f8d50ff8bd8, cond=0x7f8d50ff8c00) at pthread_cond_wait.c:533
#2  0x00007f8d9602ced9 in __pthread_cond_timedwait (cond=0x7f8d50ff8c00, mutex=0x7f8d50ff8bd8, abstime=0x7f8d50ff8ae0) at pthread_cond_wait.c:667
#3  0x00007f8d6c397b17 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f8d6c39846a in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f8d6c316a80 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f8d6c3382db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8d6c36a311 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8d6c39a561 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8d960266db in start_thread (arg=0x7f8d50ff9700) at pthread_create.c:463
#10 0x00007f8da0eec88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f8d517fa700 (LWP 30918)):
#0  0x00007f8d9602c9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b763d3d898) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f8d9602c9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55b763d3d7d8, cond=0x55b763d3d870) at pthread_cond_wait.c:502
#2  0x00007f8d9602c9f3 in __pthread_cond_wait (cond=0x55b763d3d870, mutex=0x55b763d3d7d8) at pthread_cond_wait.c:655
#3  0x00007f8d6c397a49 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f8d6cc50178 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f8d6c36b7df in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f8d6c39a561 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8d960266db in start_thread (arg=0x7f8d517fa700) at pthread_create.c:463
#8  0x00007f8da0eec88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f8d51ffb700 (LWP 30917)):
#0  0x00007f8d9602c9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x7f8d51ffac48) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f8d9602c9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f8d51ffabf8, cond=0x7f8d51ffac20) at pthread_cond_wait.c:502
#2  0x00007f8d9602c9f3 in __pthread_cond_wait (cond=0x7f8d51ffac20, mutex=0x7f8d51ffabf8) at pthread_cond_wait.c:655
#3  0x00007f8d6c397a49 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f8d6c398478 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f8d6c39850f in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f8d6c358fc8 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8d6c35b7f6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8d6c35baf4 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8d6c39a561 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8d960266db in start_thread (arg=0x7f8d51ffb700) at pthread_create.c:463
#11 0x00007f8da0eec88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f8d527fc700 (LWP 30916)):
#0  0x00007f8d9602ced9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f8d527fba50, expected=0, futex_word=0x7f8d527fbc38) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f8d9602ced9 in __pthread_cond_wait_common (abstime=0x7f8d527fbaf0, mutex=0x7f8d527fbbe8, cond=0x7f8d527fbc10) at pthread_cond_wait.c:533
#2  0x00007f8d9602ced9 in __pthread_cond_timedwait (cond=0x7f8d527fbc10, mutex=0x7f8d527fbbe8, abstime=0x7f8d527fbaf0) at pthread_cond_wait.c:667
#3  0x00007f8d6c397b17 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f8d6c39846a in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f8d6c398552 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f8d6c358fb1 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8d6c35b7f6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8d6c35bab4 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8d6c39a561 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8d960266db in start_thread (arg=0x7f8d527fc700) at pthread_create.c:463
#11 0x00007f8da0eec88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f8d52ffd700 (LWP 30915)):
#0  0x00007f8d9602ced9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f8d52ffca50, expected=0, futex_word=0x7f8d52ffcc38) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f8d9602ced9 in __pthread_cond_wait_common (abstime=0x7f8d52ffcaf0, mutex=0x7f8d52ffcbe8, cond=0x7f8d52ffcc10) at pthread_cond_wait.c:533
#2  0x00007f8d9602ced9 in __pthread_cond_timedwait (cond=0x7f8d52ffcc10, mutex=0x7f8d52ffcbe8, abstime=0x7f8d52ffcaf0) at pthread_cond_wait.c:667
#3  0x00007f8d6c397b17 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f8d6c39846a in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f8d6c398552 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f8d6c358fb1 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8d6c35b7f6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8d6c35bab4 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8d6c39a561 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8d960266db in start_thread (arg=0x7f8d52ffd700) at pthread_create.c:463
#11 0x00007f8da0eec88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f8d53fff700 (LWP 30913)):
#0  0x00007f8da0efb6ac in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f8da0efd474 in ___fprintf_chk (fp=0x7f8da11b88b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f8d691b76a8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f8d6919f9ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f8d6919fb44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f8d691a146c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f8d69197114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f8d6c39ddb4 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8d6c3382db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8d6bcff514 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8d6c36a468 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8d6c39a561 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f8d960266db in start_thread (arg=0x7f8d53fff700) at pthread_create.c:463
#12 0x00007f8da0eec88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f8d58a85700 (LWP 30912)):
#0  0x00007f8d9602ced9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f8d58a84a50, expected=0, futex_word=0x7f8d58a84c38) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f8d9602ced9 in __pthread_cond_wait_common (abstime=0x7f8d58a84af0, mutex=0x7f8d58a84be8, cond=0x7f8d58a84c10) at pthread_cond_wait.c:533
#2  0x00007f8d9602ced9 in __pthread_cond_timedwait (cond=0x7f8d58a84c10, mutex=0x7f8d58a84be8, abstime=0x7f8d58a84af0) at pthread_cond_wait.c:667
#3  0x00007f8d6c397b17 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f8d6c39846a in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f8d6c398552 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f8d6c358fb1 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8d6c35b7f6 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8d6c35bab4 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8d6c39a561 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8d960266db in start_thread (arg=0x7f8d58a85700) at pthread_create.c:463
#11 0x00007f8da0eec88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f8d59286700 (LWP 30911)):
#0  0x00007f8d9602ced9 in futex_reltimed_wait_cancelable (private=<optimized out>, reltime=0x7f8d59285a50, expected=0, futex_word=0x7f8d59285c38) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f8d9602ced9 in __pthread_cond_wait_common (abstime=0x7f8d59285af0, mutex=0x7f8d59285be8, cond=0x7f8d59285c10) at pthread_cond_wait.c:533
#2  0x00007f8d9602ced9 in __pthread_cond_timedwait (cond=0x7f8d59285c10, mutex=0x7f8d59285be8, abstime=0x7f8d59285af0) at pthread_cond_wait.c:667
#3  0x00007f8d6c397b17 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f8d6c39846a in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f8d6c398552 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f8d6c358fb1 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8d6c35b4c7 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8d6c35bab4 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8d6c39a561 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8d960266db in start_thread (arg=0x7f8d59286700) at pthread_create.c:463
#11 0x00007f8da0eec88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f8d59a87700 (LWP 30910)):
#0  0x00007f8da0edb187 in __GI___libc_write (fd=2, buf=0x7f8d59a83f60, nbytes=57) at ../sysdeps/unix/sysv/linux/write.c:27
#1  0x00007f8da0e561bd in _IO_new_file_write (f=0x7f8da11b7680 <_IO_2_1_stderr_>, data=0x7f8d59a83f60, n=57) at fileops.c:1203
#2  0x00007f8da0e56b2f in new_do_write (to_do=<optimized out>, data=0x7f8d59a83f60 "[warn] epoll_wait: El descriptor de fitxer no \303\251s v\303\240lid\n", fp=0x7f8da11b7680 <_IO_2_1_stderr_>) at fileops.c:457
#3  0x00007f8da0e56b2f in _IO_new_file_xsputn (f=0x7f8da11b7680 <_IO_2_1_stderr_>, data=<optimized out>, n=57) at fileops.c:1277
#4  0x00007f8da0e29707 in buffered_vfprintf (s=s@entry=0x7f8da11b7680 <_IO_2_1_stderr_>, format=format@entry=0x7f8d691b76a8 "[%s] %s\n", args=args@entry=0x7f8d59a86520) at vfprintf.c:2350
#5  0x00007f8da0e26726 in _IO_vfprintf_internal (s=s@entry=0x7f8da11b7680 <_IO_2_1_stderr_>, format=0x7f8d691b76a8 "[%s] %s\n", ap=ap@entry=0x7f8d59a86520) at vfprintf.c:1301
#6  0x00007f8da0efd4c6 in ___fprintf_chk (fp=0x7f8da11b7680 <_IO_2_1_stderr_>, flag=1, format=<optimized out>) at fprintf_chk.c:35
#7  0x00007f8d6919f9ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#8  0x00007f8d6919fb44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#9  0x00007f8d691a146c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#10 0x00007f8d69197114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#11 0x00007f8d6c39ddb4 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f8d6c3382db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#13 0x00007f8d6c35f544 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007f8d6c36a468 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007f8d6c39a561 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#16 0x00007f8d960266db in start_thread (arg=0x7f8d59a87700) at pthread_create.c:463
#17 0x00007f8da0eec88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f8d5a288700 (LWP 30909)):
#0  0x00007f8da0efb6ac in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f8da0efd474 in ___fprintf_chk (fp=0x7f8da11b88b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f8d691b76a8 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f8d6919f9ad in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f8d6919fb44 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f8d691a146c in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f8d69197114 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f8d6c39dc79 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f8d6c3382db in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f8d6c36a311 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f8d6c39a561 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f8d960266db in start_thread (arg=0x7f8d5a288700) at pthread_create.c:463
#11 0x00007f8da0eec88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f8d7bfff700 (LWP 30898)):
#0  0x00007f8da0edfbf9 in __GI___poll (fds=0x7f8d74004db0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8d93e854c9 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f8d93e855dc in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f8d9b4eddcb in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f8d9b48f03a in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8d9b2b64ca in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f8d9d045015 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f8d9b2b7c72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f8d960266db in start_thread (arg=0x7f8d7bfff700) at pthread_create.c:463
#9  0x00007f8da0eec88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f8d822b9700 (LWP 30897)):
#0  0x00007f8d9602c9f3 in futex_wait_cancelable (private=<optimized out>, expected=0, futex_word=0x55b7632f0438) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f8d9602c9f3 in __pthread_cond_wait_common (abstime=0x0, mutex=0x55b7632f03e8, cond=0x55b7632f0410) at pthread_cond_wait.c:502
#2  0x00007f8d9602c9f3 in __pthread_cond_wait (cond=0x55b7632f0410, mutex=0x55b7632f03e8) at pthread_cond_wait.c:655
#3  0x00007f8d834d23aa in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f8d834d20d7 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f8d960266db in start_thread (arg=0x7f8d822b9700) at pthread_create.c:463
#6  0x00007f8da0eec88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f8d8b822700 (LWP 30896)):
#0  0x00007f8da0edfbf9 in __GI___poll (fds=0x7f8d8b821c28, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8d9599d747 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f8d9599f36a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f8d8dfdf578 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f8d9b2b7c72 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f8d960266db in start_thread (arg=0x7f8d8b822700) at pthread_create.c:463
#6  0x00007f8da0eec88f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f8da16aedc0 (LWP 30895)):
[KCrash Handler]
#6  0x00007f8da0e09e97 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:51
#7  0x00007f8da0e0b801 in __GI_abort () at abort.c:79
#8  0x00007f8da0e54897 in __libc_message (action=action@entry=do_abort, fmt=fmt@entry=0x7f8da0f81b9a "%s\n") at ../sysdeps/posix/libc_fatal.c:181
#9  0x00007f8da0e5b90a in malloc_printerr (str=str@entry=0x7f8da0f7fd88 "free(): invalid pointer") at malloc.c:5350
#10 0x00007f8da0e62e1c in _int_free (have_lock=0, p=0x7f8d7128aaf0, av=0x7f8da11b6c40 <main_arena>) at malloc.c:4157
#11 0x00007f8da0e62e1c in __GI___libc_free (mem=0x7f8d7128ab00 <WebEnginePart::WebEnginePart(QWidget*, QObject*, QByteArray const&, QStringList const&)::s_cookieJar>) at malloc.c:3124
#12 0x00007f8d9b4be3bb in QObjectPrivate::deleteChildren() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#13 0x00007f8d9b4c7ffb in QObject::~QObject() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f8d70de80a9 in QWebEngineProfile::~QWebEngineProfile() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineWidgets.so.5
#15 0x00007f8d9b4be3bb in QObjectPrivate::deleteChildren() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#16 0x00007f8d9b4c7ffb in QObject::~QObject() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#17 0x00007f8d9b4c83e9 in QObject::~QObject() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#18 0x00007f8d6a81694d in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#19 0x00007f8d6a816ac5 in  () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#20 0x00007f8d9b493082 in qt_call_post_routines() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#21 0x00007f8d9c6dfd26 in QApplication::~QApplication() () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#22 0x00007f8da129b9f3 in kdemain () at /usr/x86_64-linux-gnu/qt5/libkdeinit5_konqueror.so
#23 0x00007f8da0decb97 in __libc_start_main (main=0x55b762eb5760 <main>, argc=1, argv=0x7fff72f7e4a8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff72f7e498) at ../csu/libc-start.c:310
#24 0x000055b762eb579a in _start ()

Possible duplicates by query: bug 407454, bug 398428, bug 396825, bug 394640, bug 392350.

Reported using DrKonqi