Bug 404052 - Crash during/after filtering inbox, probably related to Qt WebEngine integration
Summary: Crash during/after filtering inbox, probably related to Qt WebEngine integration
Status: REOPENED
Alias: None
Product: kmail2
Classification: Applications
Component: general (show other bugs)
Version: 5.9.1
Platform: Debian stable Linux
: NOR crash
Target Milestone: ---
Assignee: kdepim bugs
URL:
Keywords: drkonqi
: 405878 (view as bug list)
Depends on:
Blocks:
 
Reported: 2019-02-07 10:28 UTC by Martin Steigerwald
Modified: 2022-10-07 08:29 UTC (History)
4 users (show)

See Also:
Latest Commit:
Version Fixed In:


Attachments
New crash information added by DrKonqi (41.87 KB, text/plain)
2019-02-07 12:02 UTC, Martin Steigerwald
Details
New crash information added by DrKonqi (40.96 KB, text/plain)
2019-02-07 17:41 UTC, Martin Steigerwald
Details
second valgrind run, with error-limit=no (21.59 KB, application/x-xz)
2019-03-04 16:17 UTC, Martin Steigerwald
Details
third valgrind run, with all dbgsym package and crash (22.01 KB, application/x-xz)
2019-03-05 13:28 UTC, Martin Steigerwald
Details

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Description Martin Steigerwald 2019-02-07 10:28:24 UTC
Application: kmail (5.9.1)

Qt Version: 5.11.3
Frameworks Version: 5.54.0
Operating System: Linux 5.0.0-rc4-tp520 x86_64
Distribution: Debian GNU/Linux buster/sid

-- Information about the crash:
Please note that this may be a packaging issue within Debian Unstable. However, I am reporting it upstream nonetheless, cause it may not be and this way I may receive some hints on what to fix within Debian in case it indead is a packaging issue.

# What I was doing when the application crashed:
- I selected all new mails in inbox and hit Ctrl-J to filter them. The inbox is part of a maildir resource that retrieved mails from a POP3 resource.

# Actual results (sometimes, but often enough, several times a day)
- KMail/Akonadi starts filtering the mail into their relevant folders.
- KMail crashes.

Background on that:
- I usually have most filters not act on any new mails, but just manually, …
- so I first see all mail in inbox to skim through it and after I did…
- I select them all and initiate filtring then.

# Expected results
- KMail completes filtering and stays around after that :)

# Further information
- KDEPIM 18.03.3 (with a bit of 18.03.1, just upgrading currently, I bet it does not affect the bug, as this issue happened with KDEPIM 18.03.1 as well, but when it indeed fixes the issue, I close this report).
- KDE Frameworks 5.5.4
- KDE Plasma 5.14.5
- Qt 5.11.3
- on Debian Unstable

The crash can be reproduced sometimes.

-- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7fb3d6b8bf00 (LWP 28434))]

Thread 32 (Thread 0x7fb2ae3fb700 (LWP 6853)):
#0  0x00007fb3ed066399 in futex_reltimed_wait_cancelable (private=0, reltime=0x7fb2ae3fa400, expected=0, futex_word=0x7fb2ae3fa5e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007fb3ed066399 in __pthread_cond_wait_common (abstime=0x7fb2ae3fa4a0, mutex=0x7fb2ae3fa598, cond=0x7fb2ae3fa5c0) at pthread_cond_wait.c:533
#2  0x00007fb3ed066399 in __pthread_cond_timedwait (cond=0x7fb2ae3fa5c0, mutex=0x7fb2ae3fa598, abstime=0x7fb2ae3fa4a0) at pthread_cond_wait.c:667
#3  0x00007fb3e66b2a37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb3e66b530a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb3e66b53f2 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb3e66b9981 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb3e66bac7f in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 31 (Thread 0x7fb2aa132700 (LWP 6754)):
#0  0x00007fb3ed066399 in futex_reltimed_wait_cancelable (private=0, reltime=0x7fb2aa131400, expected=0, futex_word=0x7fb2aa1315e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007fb3ed066399 in __pthread_cond_wait_common (abstime=0x7fb2aa1314a0, mutex=0x7fb2aa131598, cond=0x7fb2aa1315c0) at pthread_cond_wait.c:533
#2  0x00007fb3ed066399 in __pthread_cond_timedwait (cond=0x7fb2aa1315c0, mutex=0x7fb2aa131598, abstime=0x7fb2aa1314a0) at pthread_cond_wait.c:667
#3  0x00007fb3e66b2a37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb3e66b530a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb3e66b53f2 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb3e66b9981 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb3e66bae61 in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 30 (Thread 0x7fb2ad139700 (LWP 6672)):
#0  0x00007fb3ed066399 in futex_reltimed_wait_cancelable (private=0, reltime=0x7fb2ad138400, expected=0, futex_word=0x7fb2ad1385e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007fb3ed066399 in __pthread_cond_wait_common (abstime=0x7fb2ad1384a0, mutex=0x7fb2ad138598, cond=0x7fb2ad1385c0) at pthread_cond_wait.c:533
#2  0x00007fb3ed066399 in __pthread_cond_timedwait (cond=0x7fb2ad1385c0, mutex=0x7fb2ad138598, abstime=0x7fb2ad1384a0) at pthread_cond_wait.c:667
#3  0x00007fb3e66b2a37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb3e66b530a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb3e66b53f2 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb3e66b9981 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb3e66bae61 in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 29 (Thread 0x7fb2aa933700 (LWP 5878)):
#0  0x00007fb3ef817764 in __GI___libc_read (nbytes=16, buf=0x7fb2aa932480, fd=102) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007fb3ef817764 in __GI___libc_read (fd=102, buf=0x7fb2aa932480, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007fb3ec521950 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb3ec4dbaef in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb3ec4dbfc0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fb3ec4dc13c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fb3efd2e16b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb3efcdb14b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb3efb2a106 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fb3efb33cd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 28 (Thread 0x7fb2aebfc700 (LWP 8764)):
#0  0x00007fb3ef817807 in __GI___libc_write (nbytes=47, buf=0x7fb2aebf88f0, fd=2) at ../sysdeps/unix/sysv/linux/write.c:26
#1  0x00007fb3ef817807 in __GI___libc_write (fd=2, buf=0x7fb2aebf88f0, nbytes=47) at ../sysdeps/unix/sysv/linux/write.c:24
#2  0x00007fb3ef7a861d in _IO_new_file_write (f=0x7fb3ef8e9680 <_IO_2_1_stderr_>, data=0x7fb2aebf88f0, n=47) at fileops.c:1183
#3  0x00007fb3ef7a79bf in new_do_write (fp=fp@entry=0x7fb3ef8e9680 <_IO_2_1_stderr_>, data=data@entry=0x7fb2aebf88f0 "[warn] epoll_wait: Ung\303\274ltiger Dateideskriptor\n", to_do=to_do@entry=47) at libioP.h:839
#4  0x00007fb3ef7a8d4e in _IO_new_file_xsputn (n=47, data=<optimized out>, f=0x7fb3ef8e9680 <_IO_2_1_stderr_>) at fileops.c:1262
#5  0x00007fb3ef7a8d4e in _IO_new_file_xsputn (f=0x7fb3ef8e9680 <_IO_2_1_stderr_>, data=<optimized out>, n=47) at fileops.c:1204
#6  0x00007fb3ef77faf2 in buffered_vfprintf (s=s@entry=0x7fb3ef8e9680 <_IO_2_1_stderr_>, format=format@entry=0x7fb3e1651848 "[%s] %s\n", args=args@entry=0x7fb2aebfaeb0) at ../libio/libioP.h:839
#7  0x00007fb3ef77d062 in _IO_vfprintf_internal (s=s@entry=0x7fb3ef8e9680 <_IO_2_1_stderr_>, format=0x7fb3e1651848 "[%s] %s\n", ap=ap@entry=0x7fb2aebfaeb0) at vfprintf.c:1296
#8  0x00007fb3ef835846 in ___fprintf_chk (fp=0x7fb3ef8e9680 <_IO_2_1_stderr_>, flag=1, format=<optimized out>) at fprintf_chk.c:35
#9  0x00007fb3e1639a5a in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#10 0x00007fb3e1639c34 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#11 0x00007fb3e163b588 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#12 0x00007fb3e1631329 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#13 0x00007fb3e66877cd in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007fb3e66a6c8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007fb3e66c8204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#16 0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#17 0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#18 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 27 (Thread 0x7fb35d2b6700 (LWP 28502)):
#0  0x00007fb3ed065fac in futex_wait_cancelable (private=0, expected=0, futex_word=0x7fb3e401dfb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb3ed065fac in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fb3e401df68, cond=0x7fb3e401df90) at pthread_cond_wait.c:502
#2  0x00007fb3ed065fac in __pthread_cond_wait (cond=0x7fb3e401df90, mutex=0x7fb3e401df68) at pthread_cond_wait.c:655
#3  0x00007fb3e3f26e4a in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007fb3e3f26e69 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 26 (Thread 0x7fb35dd9f700 (LWP 28489)):
#0  0x00007fb3f1047240 in __tls_get_addr () at ../sysdeps/x86_64/tls_get_addr.S:30
#1  0x00007fb3efb33056 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007fb3efd2e611 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007fb3ec4db9f1 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb3ec4dbfc0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fb3ec4dc13c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fb3efd2e16b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb3efcdb14b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb3efb2a106 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fb3efb33cd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 25 (Thread 0x7fb35f7fe700 (LWP 28471)):
#0  0x00007fb3ef833a6b in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:63
#1  0x00007fb3ef8357f4 in ___fprintf_chk (fp=0x7fb3ef8ea8b0 <_IO_stdfile_2_lock>, flag=1, format=0x7fb3e1651848 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fb3e1639a5a in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007fb3e1639c34 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007fb3e163b588 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007fb3e1631329 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007fb3e66877cd in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb3e66a6c8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb3e66c8204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 24 (Thread 0x7fb35ffff700 (LWP 28470)):
#0  0x00007fb3ef817764 in __GI___libc_read (nbytes=10, buf=0x7fb35fffe4de, fd=65) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007fb3ef817764 in __GI___libc_read (fd=65, buf=0x7fb35fffe4de, nbytes=10) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007fb3dd373fc1 in pa_read () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#3  0x00007fb3e1c4350e in pa_mainloop_prepare () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007fb3e1c43f70 in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007fb3e1c44030 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007fb3e1c52059 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#7  0x00007fb3dd3a34d8 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#8  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7fb37cff9700 (LWP 28469)):
#0  0x00007fb3ed066399 in futex_reltimed_wait_cancelable (private=0, reltime=0x7fb37cff83c0, expected=0, futex_word=0x7fb37cff85a8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007fb3ed066399 in __pthread_cond_wait_common (abstime=0x7fb37cff8460, mutex=0x7fb37cff8558, cond=0x7fb37cff8580) at pthread_cond_wait.c:533
#2  0x00007fb3ed066399 in __pthread_cond_timedwait (cond=0x7fb37cff8580, mutex=0x7fb37cff8558, abstime=0x7fb37cff8460) at pthread_cond_wait.c:667
#3  0x00007fb3e66b2a37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb3e66b530a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb3e6687370 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb3e66a6c8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb3e66c8204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7fb37d7fa700 (LWP 28468)):
#0  0x00007fb3ed066399 in futex_reltimed_wait_cancelable (private=0, reltime=0x7fb37d7f93c0, expected=0, futex_word=0x7fb37d7f95a8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007fb3ed066399 in __pthread_cond_wait_common (abstime=0x7fb37d7f9460, mutex=0x7fb37d7f9558, cond=0x7fb37d7f9580) at pthread_cond_wait.c:533
#2  0x00007fb3ed066399 in __pthread_cond_timedwait (cond=0x7fb37d7f9580, mutex=0x7fb37d7f9558, abstime=0x7fb37d7f9460) at pthread_cond_wait.c:667
#3  0x00007fb3e66b2a37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb3e66b530a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb3e6687370 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb3e66a6c8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb3e66c8204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7fb37dffb700 (LWP 28467)):
#0  0x00007fb3ed065fac in futex_wait_cancelable (private=0, expected=0, futex_word=0x55f817343ad8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb3ed065fac in __pthread_cond_wait_common (abstime=0x0, mutex=0x55f817343a18, cond=0x55f817343ab0) at pthread_cond_wait.c:502
#2  0x00007fb3ed065fac in __pthread_cond_wait (cond=0x55f817343ab0, mutex=0x55f817343a18) at pthread_cond_wait.c:655
#3  0x00007fb3e66b2969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb3e70187d8 in cc::SingleThreadTaskGraphRunner::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb3e66cad86 in base::SimpleThread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7fb37e7fc700 (LWP 28466)):
#0  0x00007fb3ed065fac in futex_wait_cancelable (private=0, expected=0, futex_word=0x7fb37e7fb5f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb3ed065fac in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fb37e7fb5a8, cond=0x7fb37e7fb5d0) at pthread_cond_wait.c:502
#2  0x00007fb3ed065fac in __pthread_cond_wait (cond=0x7fb37e7fb5d0, mutex=0x7fb37e7fb5a8) at pthread_cond_wait.c:655
#3  0x00007fb3e66b2969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb3e66b5318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb3e66b53af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb3e66b9998 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb3e66bac7f in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7fb37effd700 (LWP 28465)):
#0  0x00007fb3ef833a6b in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:63
#1  0x00007fb3ef8357f4 in ___fprintf_chk (fp=0x7fb3ef8ea8b0 <_IO_stdfile_2_lock>, flag=1, format=0x7fb3e1651848 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fb3e1639a5a in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007fb3e1639c34 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007fb3e163b588 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007fb3e1631329 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007fb3e6687779 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb3e66a6c8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb3e57b7dba in content::BrowserThreadImpl::IOThreadRun(base::RunLoop*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb3e57b8267 in content::BrowserThreadImpl::Run(base::RunLoop*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb3e66c8338 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#13 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7fb37f7fe700 (LWP 28464)):
#0  0x00007fb3ed065fac in futex_wait_cancelable (private=0, expected=0, futex_word=0x7fb37f7fd5f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb3ed065fac in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fb37f7fd5a8, cond=0x7fb37f7fd5d0) at pthread_cond_wait.c:502
#2  0x00007fb3ed065fac in __pthread_cond_wait (cond=0x7fb37f7fd5d0, mutex=0x7fb37f7fd5a8) at pthread_cond_wait.c:655
#3  0x00007fb3e66b2969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb3e66b5318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb3e66b53af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb3e66b9998 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb3e66bac7f in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7fb37ffff700 (LWP 28463)):
#0  0x00007fb3ed065fac in futex_wait_cancelable (private=0, expected=0, futex_word=0x7fb37fffe5f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb3ed065fac in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fb37fffe5a8, cond=0x7fb37fffe5d0) at pthread_cond_wait.c:502
#2  0x00007fb3ed065fac in __pthread_cond_wait (cond=0x7fb37fffe5d0, mutex=0x7fb37fffe5a8) at pthread_cond_wait.c:655
#3  0x00007fb3e66b2969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb3e66b5318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb3e66b53af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb3e66b9998 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb3e66bae61 in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7fb394ff9700 (LWP 28462)):
#0  0x00007fb3ed065fac in futex_wait_cancelable (private=0, expected=0, futex_word=0x7fb394ff85f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb3ed065fac in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fb394ff85a8, cond=0x7fb394ff85d0) at pthread_cond_wait.c:502
#2  0x00007fb3ed065fac in __pthread_cond_wait (cond=0x7fb394ff85d0, mutex=0x7fb394ff85a8) at pthread_cond_wait.c:655
#3  0x00007fb3e66b2969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb3e66b5318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb3e66b53af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb3e66b9998 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb3e66bac7f in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7fb3957fa700 (LWP 28461)):
#0  0x00007fb3ed065fac in futex_wait_cancelable (private=0, expected=0, futex_word=0x7fb3957f95f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb3ed065fac in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fb3957f95a8, cond=0x7fb3957f95d0) at pthread_cond_wait.c:502
#2  0x00007fb3ed065fac in __pthread_cond_wait (cond=0x7fb3957f95d0, mutex=0x7fb3957f95a8) at pthread_cond_wait.c:655
#3  0x00007fb3e66b2969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb3e66b5318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb3e66b53af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb3e66b9998 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb3e66bac7f in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7fb395ffb700 (LWP 28460)):
#0  0x00007fb3ed065fac in futex_wait_cancelable (private=0, expected=0, futex_word=0x7fb395ffa5f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb3ed065fac in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fb395ffa5a8, cond=0x7fb395ffa5d0) at pthread_cond_wait.c:502
#2  0x00007fb3ed065fac in __pthread_cond_wait (cond=0x7fb395ffa5d0, mutex=0x7fb395ffa5a8) at pthread_cond_wait.c:655
#3  0x00007fb3e66b2969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb3e66b5318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb3e66b53af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb3e66b9998 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb3e66bac7f in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7fb397fff700 (LWP 28456)):
#0  0x00007fb3ed066399 in futex_reltimed_wait_cancelable (private=0, reltime=0x7fb397ffe400, expected=0, futex_word=0x7fb397ffe5e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007fb3ed066399 in __pthread_cond_wait_common (abstime=0x7fb397ffe4a0, mutex=0x7fb397ffe598, cond=0x7fb397ffe5c0) at pthread_cond_wait.c:533
#2  0x00007fb3ed066399 in __pthread_cond_timedwait (cond=0x7fb397ffe5c0, mutex=0x7fb397ffe598, abstime=0x7fb397ffe4a0) at pthread_cond_wait.c:667
#3  0x00007fb3e66b2a37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb3e66b530a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb3e66b53f2 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb3e66b9981 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb3e66bae61 in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7fb3ad7fa700 (LWP 28454)):
#0  0x00007fb3ed066399 in futex_reltimed_wait_cancelable (private=0, reltime=0x7fb3ad7f9400, expected=0, futex_word=0x7fb3ad7f95e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007fb3ed066399 in __pthread_cond_wait_common (abstime=0x7fb3ad7f94a0, mutex=0x7fb3ad7f9598, cond=0x7fb3ad7f95c0) at pthread_cond_wait.c:533
#2  0x00007fb3ed066399 in __pthread_cond_timedwait (cond=0x7fb3ad7f95c0, mutex=0x7fb3ad7f9598, abstime=0x7fb3ad7f94a0) at pthread_cond_wait.c:667
#3  0x00007fb3e66b2a37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb3e66b530a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb3e66b53f2 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb3e66b9981 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb3e66bae61 in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7fb3adffb700 (LWP 28453)):
#0  0x00007fb3ef833a6b in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:63
#1  0x00007fb3ef8357f4 in ___fprintf_chk (fp=0x7fb3ef8ea8b0 <_IO_stdfile_2_lock>, flag=1, format=0x7fb3e1651848 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fb3e1639a5a in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007fb3e1639c34 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007fb3e163b588 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007fb3e1631329 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007fb3e66877cd in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb3e66a6c8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb3e66c8204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7fb3ae7fc700 (LWP 28452)):
#0  0x00007fb3ed065fac in futex_wait_cancelable (private=0, expected=0, futex_word=0x7fb3ae7fb588) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb3ed065fac in __pthread_cond_wait_common (abstime=0x0, mutex=0x7fb3ae7fb538, cond=0x7fb3ae7fb560) at pthread_cond_wait.c:502
#2  0x00007fb3ed065fac in __pthread_cond_wait (cond=0x7fb3ae7fb560, mutex=0x7fb3ae7fb538) at pthread_cond_wait.c:655
#3  0x00007fb3e66b2969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007fb3e66b5318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007fb3e66b53af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007fb3e668735f in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb3e66a6c8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb3e66c8204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7fb3aeffd700 (LWP 28451)):
#0  0x00007fb3ef833a6b in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:63
#1  0x00007fb3ef8357f4 in ___fprintf_chk (fp=0x7fb3ef8ea8b0 <_IO_stdfile_2_lock>, flag=1, format=0x7fb3e1651848 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007fb3e1639a5a in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007fb3e1639c34 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007fb3e163b588 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007fb3e1631329 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007fb3e6687779 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007fb3e66a6c8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007fb3e66c8204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007fb3e66c3c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7fb3bde01700 (LWP 28443)):
#0  0x00007fb3ec525cc9 in g_mutex_lock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fb3ec4db555 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb3ec4dbf4b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb3ec4dc13c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb3efd2e16b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb3efcdb14b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb3efb2a106 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb3efb33cd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7fb3bf7fe700 (LWP 28440)):
#0  0x00007fb3ef817764 in __GI___libc_read (nbytes=16, buf=0x7fb3bf7fd480, fd=14) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007fb3ef817764 in __GI___libc_read (fd=14, buf=0x7fb3bf7fd480, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007fb3ec521950 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb3ec4dbaef in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb3ec4dbfc0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007fb3ec4dc13c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fb3efd2e16b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb3efcdb14b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb3efb2a106 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007fb3efb33cd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7fb3bffff700 (LWP 28439)):
#0  0x00007fb3ec4db926 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fb3ec4dbfc0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb3ec4dc13c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb3efd2e16b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fb3efcdb14b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb3efb2a106 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb3efb33cd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7fb3cd035700 (LWP 28438)):
#0  0x00007fb3efd2e030 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007fb3ec4db549 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb3ec4dbf4b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb3ec4dc13c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb3efd2e16b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb3efcdb14b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb3efb2a106 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007fb3efb33cd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7fb3ce246700 (LWP 28437)):
#0  0x00007fb3ef81bb39 in __GI___poll (fds=0x7fb3c0011e00, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fb3ec4dc016 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb3ec4dc13c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb3efd2e16b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007fb3efcdb14b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb3efb2a106 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007fb3ef306545 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007fb3efb33cd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7fb3cffff700 (LWP 28436)):
#0  0x00007fb3ed065fac in futex_wait_cancelable (private=0, expected=0, futex_word=0x55f816956a4c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007fb3ed065fac in __pthread_cond_wait_common (abstime=0x0, mutex=0x55f8169569f8, cond=0x55f816956a20) at pthread_cond_wait.c:502
#2  0x00007fb3ed065fac in __pthread_cond_wait (cond=0x55f816956a20, mutex=0x55f8169569f8) at pthread_cond_wait.c:655
#3  0x00007fb3d47dda32 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007fb3d47dd5f7 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7fb3d6069700 (LWP 28435)):
#0  0x00007fb3ef81bb39 in __GI___poll (fds=0x7fb3d60685b8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007fb3ec0d2cf7 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007fb3ec0d491a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007fb3d6736519 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007fb3efb33cd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007fb3ed05ffa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007fb3ef8267ef in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7fb3d6b8bf00 (LWP 28434)):
[KCrash Handler]
#6  0x00007fb3edf8d15a in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#7  0x00007fb3edfd32ef in Akonadi::Item::hasAttribute(QByteArray const&) const () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#8  0x00007fb3ee0bda7e in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#9  0x00007fb3ee0bb154 in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#10 0x00007fb3ee0ab42a in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#11 0x00007fb3efd056cb in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007fb3edfe5995 in Akonadi::Monitor::itemRemoved(Akonadi::Item const&) () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#13 0x00007fb3edff01df in Akonadi::MonitorPrivate::emitItemsNotification(Akonadi::Protocol::ItemChangeNotification const&, QVector<Akonadi::Item> const&, Akonadi::Collection const&, Akonadi::Collection const&) () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#14 0x00007fb3edff0dcc in Akonadi::MonitorPrivate::emitNotification(QSharedPointer<Akonadi::Protocol::ChangeNotification> const&) () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#15 0x00007fb3edf9cd9e in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#16 0x00007fb3edff3a41 in Akonadi::MonitorPrivate::flushPipeline() () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#17 0x00007fb3edff3d89 in Akonadi::MonitorPrivate::dataAvailable() () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#18 0x00007fb3edfe7299 in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#19 0x00007fb3efd056cb in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#20 0x00007fb3edf90713 in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#21 0x00007fb3edfca3e4 in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#22 0x00007fb3efd056cb in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#23 0x00007fb3f0b8fc6c in KJob::result(KJob*, KJob::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#24 0x00007fb3f0b90733 in KJob::finishJob(bool) () at /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#25 0x00007fb3efd114a6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007fb3efd05f3b in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#27 0x00007fb3f0652491 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007fb3f0659ad0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#29 0x00007fb3efcdc479 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007fb3efd2d568 in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007fb3efd2ddc4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007fb3ec4dbe0e in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007fb3ec4dc0a8 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007fb3ec4dc13c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007fb3efd2e153 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#36 0x00007fb3d67c9861 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#37 0x00007fb3efcdb14b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007fb3efce32c2 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#39 0x000055f815d0833b in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qcoreapplication.h:116
[Inferior 1 (process 28434) detached]

Reported using DrKonqi
Comment 1 Martin Steigerwald 2019-02-07 12:02:46 UTC
Created attachment 117911 [details]
New crash information added by DrKonqi

kmail (5.9.3) using Qt 5.11.3

- What I was doing when the application crashed:

Okay, this happens also with KDEPIM/Akonadi 18.03.1 (all packages upgraded). Another backtrace attached.

-- Backtrace (Reduced):
#6  0x00007f0f32c2c15a in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#7  0x00007f0f32c722ef in Akonadi::Item::hasAttribute(QByteArray const&) const () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#8  0x00007f0f32d5ca7e in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#9  0x00007f0f32d5a154 in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#10 0x00007f0f32d4a42a in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
Comment 2 Martin Steigerwald 2019-02-07 12:03:57 UTC
I do not know why DrKonqi reduced the backtrace. It definately looked longer.
Comment 3 Martin Steigerwald 2019-02-07 17:41:15 UTC
Created attachment 117912 [details]
New crash information added by DrKonqi

kmail (5.9.3) using Qt 5.11.3

- What I was doing when the application crashed:

Another backtrace. Let's see whether DrKonqi truncates this one as well. If it does, I will cut and paste the full backtrace in a moment.

-- Backtrace (Reduced):
#6  0x00007f011959515a in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#7  0x00007f01195db2ef in Akonadi::Item::hasAttribute(QByteArray const&) const () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#8  0x00007f01196c5a7e in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#9  0x00007f01196c3154 in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#10 0x00007f01196b342a in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
Comment 4 Martin Steigerwald 2019-02-07 17:43:02 UTC
Okay, on one hand DrKonqi does not thing the backtraces are related, on the other hand it truncates the backtrace when I tell it to add it to the bug report. Since I do not know whether DrKonqi got this right, this time I add the full backtrace manually:

Application: KMail (kmail), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f0102391f00 (LWP 13263))]

Thread 30 (Thread 0x7f00d8a49700 (LWP 14328)):
#0  0x00007f011866e3a9 in futex_reltimed_wait_cancelable (private=0, reltime=0x7f00d8a48400, expected=0, futex_word=0x7f00d8a485e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f011866e3a9 in __pthread_cond_wait_common (abstime=0x7f00d8a484a0, mutex=0x7f00d8a48598, cond=0x7f00d8a485c0) at pthread_cond_wait.c:533
#2  0x00007f011866e3a9 in __pthread_cond_timedwait (cond=0x7f00d8a485c0, mutex=0x7f00d8a48598, abstime=0x7f00d8a484a0) at pthread_cond_wait.c:667
#3  0x00007f0111cbaa37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f0111cbd30a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f0111cbd3f2 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f0111cc1981 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f0111cc2e61 in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f0111ccbc81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 29 (Thread 0x7effdb1d7700 (LWP 14274)):
#0  0x00007f011ae3ba8b in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:63
#1  0x00007f011ae3d814 in ___fprintf_chk (fp=0x7f011aef28b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f010cc59848 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f010cc41a5a in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f010cc41c34 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f010cc43588 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f010cc39329 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f0111c8f7cd in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f0111caec8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f0111cd0204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f0111ccbc81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 28 (Thread 0x7f00caffd700 (LWP 14088)):
#0  0x00007f011866e3a9 in futex_reltimed_wait_cancelable (private=0, reltime=0x7f00caffc400, expected=0, futex_word=0x7f00caffc5e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f011866e3a9 in __pthread_cond_wait_common (abstime=0x7f00caffc4a0, mutex=0x7f00caffc598, cond=0x7f00caffc5c0) at pthread_cond_wait.c:533
#2  0x00007f011866e3a9 in __pthread_cond_timedwait (cond=0x7f00caffc5c0, mutex=0x7f00caffc598, abstime=0x7f00caffc4a0) at pthread_cond_wait.c:667
#3  0x00007f0111cbaa37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f0111cbd30a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f0111cbd3f2 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f0111cc1981 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f0111cc2e61 in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f0111ccbc81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 27 (Thread 0x7f005bfff700 (LWP 13527)):
#0  0x00007f011866dfbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x7f010f625fb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f011866dfbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f010f625f68, cond=0x7f010f625f90) at pthread_cond_wait.c:502
#2  0x00007f011866dfbc in __pthread_cond_wait (cond=0x7f010f625f90, mutex=0x7f010f625f68) at pthread_cond_wait.c:655
#3  0x00007f010f52ee4a in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f010f52ee69 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 26 (Thread 0x7f00717fb700 (LWP 13514)):
#0  0x00007f011ae1f774 in __GI___libc_read (nbytes=16, buf=0x7f00717fa480, fd=95) at ../sysdeps/unix/sysv/linux/read.c:26
#1  0x00007f011ae1f774 in __GI___libc_read (fd=95, buf=0x7f00717fa480, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#2  0x00007f0117b29950 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0117ae3aef in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f0117ae3fc0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f0117ae413c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f011b33616b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f011b2e314b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f011b132106 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f011b13bcd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 25 (Thread 0x7f00737fe700 (LWP 13471)):
#0  0x00007f011ae3ba8b in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:63
#1  0x00007f011ae3d814 in ___fprintf_chk (fp=0x7f011aef28b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f010cc59848 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f010cc41a5a in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f010cc41c34 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f010cc43588 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f010cc39329 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f0111c8f7cd in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f0111caec8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f0111cd0204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f0111ccbc81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 24 (Thread 0x7f0073fff700 (LWP 13470)):
#0  0x00007f011866e3a9 in futex_reltimed_wait_cancelable (private=0, reltime=0x7f0073ffe3c0, expected=0, futex_word=0x7f0073ffe5a8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f011866e3a9 in __pthread_cond_wait_common (abstime=0x7f0073ffe460, mutex=0x7f0073ffe558, cond=0x7f0073ffe580) at pthread_cond_wait.c:533
#2  0x00007f011866e3a9 in __pthread_cond_timedwait (cond=0x7f0073ffe580, mutex=0x7f0073ffe558, abstime=0x7f0073ffe460) at pthread_cond_wait.c:667
#3  0x00007f0111cbaa37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f0111cbd30a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f0111c8f370 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f0111caec8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f0111cd0204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f0111ccbc81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7f00bcff9700 (LWP 13469)):
#0  0x00007f010899a847 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#1  0x00007f010899abb9 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#2  0x00007f010899b40a in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#3  0x00007f010d24bcb8 in pa_mainloop_dispatch () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f010d24bf8c in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f010d24c030 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f010d25a059 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#7  0x00007f01089ab4d8 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#8  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7f00bd7fa700 (LWP 13468)):
#0  0x00007f011866e3a9 in futex_reltimed_wait_cancelable (private=0, reltime=0x7f00bd7f93c0, expected=0, futex_word=0x7f00bd7f95a8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f011866e3a9 in __pthread_cond_wait_common (abstime=0x7f00bd7f9460, mutex=0x7f00bd7f9558, cond=0x7f00bd7f9580) at pthread_cond_wait.c:533
#2  0x00007f011866e3a9 in __pthread_cond_timedwait (cond=0x7f00bd7f9580, mutex=0x7f00bd7f9558, abstime=0x7f00bd7f9460) at pthread_cond_wait.c:667
#3  0x00007f0111cbaa37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f0111cbd30a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f0111c8f370 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f0111caec8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f0111cd0204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f0111ccbc81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7f00bdffb700 (LWP 13467)):
#0  0x00007f011866dfbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x55d9b0bb5198) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f011866dfbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d9b0bb50d8, cond=0x55d9b0bb5170) at pthread_cond_wait.c:502
#2  0x00007f011866dfbc in __pthread_cond_wait (cond=0x55d9b0bb5170, mutex=0x55d9b0bb50d8) at pthread_cond_wait.c:655
#3  0x00007f0111cba969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f01126207d8 in cc::SingleThreadTaskGraphRunner::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f0111cd2d86 in base::SimpleThread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f0111ccbc81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7f00be7fc700 (LWP 13466)):
#0  0x00007f011866dfbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x7f00be7fb5f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f011866dfbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f00be7fb5a8, cond=0x7f00be7fb5d0) at pthread_cond_wait.c:502
#2  0x00007f011866dfbc in __pthread_cond_wait (cond=0x7f00be7fb5d0, mutex=0x7f00be7fb5a8) at pthread_cond_wait.c:655
#3  0x00007f0111cba969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f0111cbd318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f0111cbd3af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f0111cc1998 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f0111cc2c7f in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f0111ccbc81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f00beffd700 (LWP 13465)):
#0  0x00007f011ae3ba8b in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:63
#1  0x00007f011ae3d814 in ___fprintf_chk (fp=0x7f011aef28b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f010cc59848 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f010cc41a5a in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f010cc41c34 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f010cc43588 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f010cc39329 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f0111c8f779 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f0111caec8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f0110dbfdba in content::BrowserThreadImpl::IOThreadRun(base::RunLoop*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f0110dc0267 in content::BrowserThreadImpl::Run(base::RunLoop*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f0111cd0338 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f0111ccbc81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#13 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f00bf7fe700 (LWP 13464)):
#0  0x00007f011866dfbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x7f00bf7fd5f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f011866dfbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f00bf7fd5a8, cond=0x7f00bf7fd5d0) at pthread_cond_wait.c:502
#2  0x00007f011866dfbc in __pthread_cond_wait (cond=0x7f00bf7fd5d0, mutex=0x7f00bf7fd5a8) at pthread_cond_wait.c:655
#3  0x00007f0111cba969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f0111cbd318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f0111cbd3af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f0111cc1998 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f0111cc2c7f in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f0111ccbc81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f00bffff700 (LWP 13463)):
#0  0x00007f011866dfbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x7f00bfffe5f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f011866dfbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f00bfffe5a8, cond=0x7f00bfffe5d0) at pthread_cond_wait.c:502
#2  0x00007f011866dfbc in __pthread_cond_wait (cond=0x7f00bfffe5d0, mutex=0x7f00bfffe5a8) at pthread_cond_wait.c:655
#3  0x00007f0111cba969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f0111cbd318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f0111cbd3af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f0111cc1998 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f0111cc2e61 in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f0111ccbc81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f00c8ff9700 (LWP 13462)):
#0  0x00007f011866dfbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x7f00c8ff85f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f011866dfbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f00c8ff85a8, cond=0x7f00c8ff85d0) at pthread_cond_wait.c:502
#2  0x00007f011866dfbc in __pthread_cond_wait (cond=0x7f00c8ff85d0, mutex=0x7f00c8ff85a8) at pthread_cond_wait.c:655
#3  0x00007f0111cba969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f0111cbd318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f0111cbd3af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f0111cc1998 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f0111cc2c7f in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f0111ccbc81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f00c97fa700 (LWP 13461)):
#0  0x00007f011866dfbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x7f00c97f95f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f011866dfbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f00c97f95a8, cond=0x7f00c97f95d0) at pthread_cond_wait.c:502
#2  0x00007f011866dfbc in __pthread_cond_wait (cond=0x7f00c97f95d0, mutex=0x7f00c97f95a8) at pthread_cond_wait.c:655
#3  0x00007f0111cba969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f0111cbd318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f0111cbd3af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f0111cc1998 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f0111cc2c7f in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f0111ccbc81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f00c9ffb700 (LWP 13460)):
#0  0x00007f011866dfbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x7f00c9ffa5f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f011866dfbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f00c9ffa5a8, cond=0x7f00c9ffa5d0) at pthread_cond_wait.c:502
#2  0x00007f011866dfbc in __pthread_cond_wait (cond=0x7f00c9ffa5d0, mutex=0x7f00c9ffa5a8) at pthread_cond_wait.c:655
#3  0x00007f0111cba969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f0111cbd318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f0111cbd3af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f0111cc1998 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f0111cc2c7f in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f0111ccbc81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f00cbfff700 (LWP 13456)):
#0  0x00007f011866e3a9 in futex_reltimed_wait_cancelable (private=0, reltime=0x7f00cbffe400, expected=0, futex_word=0x7f00cbffe5e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f011866e3a9 in __pthread_cond_wait_common (abstime=0x7f00cbffe4a0, mutex=0x7f00cbffe598, cond=0x7f00cbffe5c0) at pthread_cond_wait.c:533
#2  0x00007f011866e3a9 in __pthread_cond_timedwait (cond=0x7f00cbffe5c0, mutex=0x7f00cbffe598, abstime=0x7f00cbffe4a0) at pthread_cond_wait.c:667
#3  0x00007f0111cbaa37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f0111cbd30a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f0111cbd3f2 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f0111cc1981 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f0111cc2e61 in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f0111ccbc81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f00d924a700 (LWP 13454)):
#0  0x00007f011866e3a9 in futex_reltimed_wait_cancelable (private=0, reltime=0x7f00d9249400, expected=0, futex_word=0x7f00d92495e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f011866e3a9 in __pthread_cond_wait_common (abstime=0x7f00d92494a0, mutex=0x7f00d9249598, cond=0x7f00d92495c0) at pthread_cond_wait.c:533
#2  0x00007f011866e3a9 in __pthread_cond_timedwait (cond=0x7f00d92495c0, mutex=0x7f00d9249598, abstime=0x7f00d92494a0) at pthread_cond_wait.c:667
#3  0x00007f0111cbaa37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f0111cbd30a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f0111cbd3f2 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f0111cc1981 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f0111cc2e61 in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f0111ccbc81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f00d9a4b700 (LWP 13453)):
#0  0x00007f011ae1f817 in __GI___libc_write (nbytes=47, buf=0x7f00d9a478f0, fd=2) at ../sysdeps/unix/sysv/linux/write.c:26
#1  0x00007f011ae1f817 in __GI___libc_write (fd=2, buf=0x7f00d9a478f0, nbytes=47) at ../sysdeps/unix/sysv/linux/write.c:24
#2  0x00007f011adb062d in _IO_new_file_write (f=0x7f011aef1680 <_IO_2_1_stderr_>, data=0x7f00d9a478f0, n=47) at fileops.c:1183
#3  0x00007f011adaf9cf in new_do_write (fp=fp@entry=0x7f011aef1680 <_IO_2_1_stderr_>, data=data@entry=0x7f00d9a478f0 "[warn] epoll_wait: Ung\303\274ltiger Dateideskriptor\n", to_do=to_do@entry=47) at libioP.h:839
#4  0x00007f011adb0d5e in _IO_new_file_xsputn (n=47, data=<optimized out>, f=0x7f011aef1680 <_IO_2_1_stderr_>) at fileops.c:1262
#5  0x00007f011adb0d5e in _IO_new_file_xsputn (f=0x7f011aef1680 <_IO_2_1_stderr_>, data=<optimized out>, n=47) at fileops.c:1204
#6  0x00007f011ad87b32 in buffered_vfprintf (s=s@entry=0x7f011aef1680 <_IO_2_1_stderr_>, format=format@entry=0x7f010cc59848 "[%s] %s\n", args=args@entry=0x7f00d9a49eb0) at ../libio/libioP.h:839
#7  0x00007f011ad850b2 in _IO_vfprintf_internal (s=s@entry=0x7f011aef1680 <_IO_2_1_stderr_>, format=0x7f010cc59848 "[%s] %s\n", ap=ap@entry=0x7f00d9a49eb0) at vfprintf.c:1296
#8  0x00007f011ae3d866 in ___fprintf_chk (fp=0x7f011aef1680 <_IO_2_1_stderr_>, flag=1, format=<optimized out>) at fprintf_chk.c:35
#9  0x00007f010cc41a5a in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#10 0x00007f010cc41c34 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#11 0x00007f010cc43588 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#12 0x00007f010cc39329 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#13 0x00007f0111c8f779 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007f0111caec8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007f0111cd0204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#16 0x00007f0111ccbc81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#17 0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#18 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f00da24c700 (LWP 13452)):
#0  0x00007f011866dfbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x7f00da24b588) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f011866dfbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f00da24b538, cond=0x7f00da24b560) at pthread_cond_wait.c:502
#2  0x00007f011866dfbc in __pthread_cond_wait (cond=0x7f00da24b560, mutex=0x7f00da24b538) at pthread_cond_wait.c:655
#3  0x00007f0111cba969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f0111cbd318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f0111cbd3af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f0111c8f35f in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f0111caec8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f0111cd0204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f0111ccbc81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f00daa4d700 (LWP 13451)):
#0  0x00007f011ae3ba8b in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:63
#1  0x00007f011ae3d814 in ___fprintf_chk (fp=0x7f011aef28b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f010cc59848 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f010cc41a5a in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f010cc41c34 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f010cc43588 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f010cc39329 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f0111c8f7cd in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f0111caec8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f0111cd0204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f0111ccbc81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f00e9606700 (LWP 13418)):
#0  0x00007f011ae23b49 in __GI___poll (fds=0x7f00e00049b0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f0117ae4016 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0117ae413c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f011b33616b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f011b2e314b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f011b132106 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f011b13bcd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f00eb7f1700 (LWP 13269)):
#0  0x00007f0117b2dce4 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f0117ae353c in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0117ae3f4b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0117ae413c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f011b33616b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f011b2e314b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f011b132106 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f011b13bcd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f00ebff2700 (LWP 13268)):
#0  0x00007f011ae23b49 in __GI___poll (fds=0x7f00e4003ce0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f0117ae4016 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0117ae413c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f011b33616b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f011b2e314b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f011b132106 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f011b13bcd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f00f880b700 (LWP 13267)):
#0  0x00007f0117b2dce4 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f0117ae3f3e in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0117ae413c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f011b33616b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f011b2e314b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f011b132106 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f011b13bcd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f00f9a1c700 (LWP 13266)):
#0  0x00007f011b13b030 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#1  0x00007f011b33605a in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f0117ae3549 in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0117ae3f4b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f0117ae413c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f011b33616b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f011b2e314b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f011b132106 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f011a90e545 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#9  0x00007f011b13bcd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f00fb4e9700 (LWP 13265)):
#0  0x00007f011866dfbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x55d9b00edc8c) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f011866dfbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x55d9b00edc38, cond=0x55d9b00edc60) at pthread_cond_wait.c:502
#2  0x00007f011866dfbc in __pthread_cond_wait (cond=0x55d9b00edc60, mutex=0x55d9b00edc38) at pthread_cond_wait.c:655
#3  0x00007f00fb744b32 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f00fb7446f7 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f010186f700 (LWP 13264)):
#0  0x00007f011ae23b49 in __GI___poll (fds=0x7f010186e5b8, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f01176dacf7 in  () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f01176dc91a in xcb_wait_for_event () at /usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f0101f3c519 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#4  0x00007f011b13bcd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f0118667fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007f011ae2e80f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f0102391f00 (LWP 13263)):
[KCrash Handler]
#6  0x00007f011959515a in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#7  0x00007f01195db2ef in Akonadi::Item::hasAttribute(QByteArray const&) const () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#8  0x00007f01196c5a7e in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#9  0x00007f01196c3154 in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#10 0x00007f01196b342a in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#11 0x00007f011b30d6cb in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#12 0x00007f01195ed995 in Akonadi::Monitor::itemRemoved(Akonadi::Item const&) () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#13 0x00007f01195f81df in Akonadi::MonitorPrivate::emitItemsNotification(Akonadi::Protocol::ItemChangeNotification const&, QVector<Akonadi::Item> const&, Akonadi::Collection const&, Akonadi::Collection const&) () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#14 0x00007f01195f8dcc in Akonadi::MonitorPrivate::emitNotification(QSharedPointer<Akonadi::Protocol::ChangeNotification> const&) () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#15 0x00007f01195a4d9e in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#16 0x00007f01195fbd1c in Akonadi::MonitorPrivate::dispatchNotifications() () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#17 0x00007f01195ef299 in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#18 0x00007f011b30d6cb in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#19 0x00007f0119598713 in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#20 0x00007f01195d23e4 in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
#21 0x00007f011b30d6cb in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f011c197c6c in KJob::result(KJob*, KJob::QPrivateSignal) () at /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#23 0x00007f011c198733 in KJob::finishJob(bool) () at /usr/lib/x86_64-linux-gnu/libKF5CoreAddons.so.5
#24 0x00007f011b3194a6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f011b30df3b in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#26 0x00007f011bc5a491 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#27 0x00007f011bc61ad0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#28 0x00007f011b2e4479 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f011b335568 in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#30 0x00007f011b335dc4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#31 0x00007f0117ae3e0e in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#32 0x00007f0117ae40a8 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#33 0x00007f0117ae413c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#34 0x00007f011b336153 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#35 0x00007f0101fcf861 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#36 0x00007f011b2e314b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#37 0x00007f011b2eb2c2 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x000055d9afc0f33b in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qcoreapplication.h:116
[Inferior 1 (process 13263) detached]
Comment 5 Sandro Knauß 2019-02-08 14:49:58 UTC
From the backtrace it looks like it is an issue inside Akonadi. But they debug symbols are missing for AkonadiCore, so we don't have a file/line... Maybe dvrail can help here.

  Thread 1 (Thread 0x7f0102391f00 (LWP 13263)):
  [KCrash Handler]
  #6  0x00007f011959515a in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
  #7  0x00007f01195db2ef in Akonadi::Item::hasAttribute(QByteArray const&) const () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
  #8  0x00007f01196c5a7e in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
  #9  0x00007f01196c3154 in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
  #10 0x00007f01196b342a in  () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
  #11 0x00007f011b30d6cb in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
  #12 0x00007f01195ed995 in Akonadi::Monitor::itemRemoved(Akonadi::Item const&) () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
  #13 0x00007f01195f81df in Akonadi::MonitorPrivate::emitItemsNotification(Akonadi::Protocol::ItemChangeNotification const&, QVector<Akonadi::Item> const&, Akonadi::Collection const&, Akonadi::Collection const&) () at /usr/lib/x86_64-linux-gnu/libKF5AkonadiCore.so.5abi2
Comment 6 Daniel Vrátil 2019-02-08 15:16:45 UTC
Could you try reproducing under valgrind?

    valgrind --track-origins=yes --num-callers=50 kmail &> log.txt

It will be ludicrously slow due to webengine, but it's our only hope figuring out why it crashes.
Comment 7 Martin Steigerwald 2019-02-09 13:49:12 UTC
Is this backtrace – after installing libkf5akonadicore5abi2-dbgsym and libkf5coreaddons5-dbgsym – more useful? I may come around to the valgrind thing, if still required, next week:

Application: KMail (kmail), signal: Segmentation fault
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f24e04daf00 (LWP 26945))]

Thread 30 (Thread 0x7f23b1fb3700 (LWP 6366)):
#0  0x00007f24f67b73a9 in futex_reltimed_wait_cancelable (private=0, reltime=0x7f23b1fb2400, expected=0, futex_word=0x7f23b1fb25e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f24f67b73a9 in __pthread_cond_wait_common (abstime=0x7f23b1fb24a0, mutex=0x7f23b1fb2598, cond=0x7f23b1fb25c0) at pthread_cond_wait.c:533
#2  0x00007f24f67b73a9 in __pthread_cond_timedwait (cond=0x7f23b1fb25c0, mutex=0x7f23b1fb2598, abstime=0x7f23b1fb24a0) at pthread_cond_wait.c:667
#3  0x00007f24efe03a37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f24efe0630a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f24efe063f2 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f24efe0a981 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f24efe0bc7f in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 29 (Thread 0x7f23b3ff5700 (LWP 6039)):
#0  0x00007f24f67b73a9 in futex_reltimed_wait_cancelable (private=0, reltime=0x7f23b3ff4400, expected=0, futex_word=0x7f23b3ff45e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f24f67b73a9 in __pthread_cond_wait_common (abstime=0x7f23b3ff44a0, mutex=0x7f23b3ff4598, cond=0x7f23b3ff45c0) at pthread_cond_wait.c:533
#2  0x00007f24f67b73a9 in __pthread_cond_timedwait (cond=0x7f23b3ff45c0, mutex=0x7f23b3ff4598, abstime=0x7f23b3ff44a0) at pthread_cond_wait.c:667
#3  0x00007f24efe03a37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f24efe0630a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f24efe063f2 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f24efe0a981 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f24efe0be61 in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 28 (Thread 0x7f23b57f8700 (LWP 5272)):
#0  0x00007f24f67b73a9 in futex_reltimed_wait_cancelable (private=0, reltime=0x7f23b57f7400, expected=0, futex_word=0x7f23b57f75e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f24f67b73a9 in __pthread_cond_wait_common (abstime=0x7f23b57f74a0, mutex=0x7f23b57f7598, cond=0x7f23b57f75c0) at pthread_cond_wait.c:533
#2  0x00007f24f67b73a9 in __pthread_cond_timedwait (cond=0x7f23b57f75c0, mutex=0x7f23b57f7598, abstime=0x7f23b57f74a0) at pthread_cond_wait.c:667
#3  0x00007f24efe03a37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f24efe0630a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f24efe063f2 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f24efe0a981 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f24efe0be61 in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 27 (Thread 0x7f23b67fa700 (LWP 3469)):
#0  0x00007f24f8f84a8b in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:63
#1  0x00007f24f8f86814 in ___fprintf_chk (fp=0x7f24f903b8b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f24eada2848 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f24ead8aa5a in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f24ead8ac34 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f24ead8c588 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f24ead82329 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f24efdd87cd in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f24efdf7c8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f24efe19204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 26 (Thread 0x7f243e67c700 (LWP 27247)):
#0  0x00007f24f67b6fbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x7f24ed76efb8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f24f67b6fbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f24ed76ef68, cond=0x7f24ed76ef90) at pthread_cond_wait.c:502
#2  0x00007f24f67b6fbc in __pthread_cond_wait (cond=0x7f24ed76ef90, mutex=0x7f24ed76ef68) at pthread_cond_wait.c:655
#3  0x00007f24ed677e4a in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#4  0x00007f24ed677e69 in  () at /usr/lib/x86_64-linux-gnu/libQt5Script.so.5
#5  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 25 (Thread 0x7f243f165700 (LWP 27234)):
#0  0x00007f24f5c76ce4 in g_mutex_unlock () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f24f5c2c53c in g_main_context_prepare () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f24f5c2cf4b in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f24f5c2d13c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f24f947f16b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f24f942c14b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f24f927b106 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f24f9284cd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 24 (Thread 0x7f2465ffb700 (LWP 27014)):
#0  0x00007f24f8f6cb49 in __GI___poll (fds=0x7f2454007030, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f24eb3a3111 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007f24eb394930 in pa_mainloop_poll () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f24eb394f7e in pa_mainloop_iterate () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f24eb395030 in pa_mainloop_run () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f24eb3a3059 in  () at /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f24e6af44d8 in  () at /usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-12.2.so
#7  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7f2466ffd700 (LWP 27012)):
#0  0x00007f24f8f68817 in __GI___libc_write (nbytes=47, buf=0x7f2466ff98f0, fd=2) at ../sysdeps/unix/sysv/linux/write.c:26
#1  0x00007f24f8f68817 in __GI___libc_write (fd=2, buf=0x7f2466ff98f0, nbytes=47) at ../sysdeps/unix/sysv/linux/write.c:24
#2  0x00007f24f8ef962d in _IO_new_file_write (f=0x7f24f903a680 <_IO_2_1_stderr_>, data=0x7f2466ff98f0, n=47) at fileops.c:1183
#3  0x00007f24f8ef89cf in new_do_write (fp=fp@entry=0x7f24f903a680 <_IO_2_1_stderr_>, data=data@entry=0x7f2466ff98f0 "[warn] epoll_wait: Ung\303\274ltiger Dateideskriptor\n", to_do=to_do@entry=47) at libioP.h:839
#4  0x00007f24f8ef9d5e in _IO_new_file_xsputn (n=47, data=<optimized out>, f=0x7f24f903a680 <_IO_2_1_stderr_>) at fileops.c:1262
#5  0x00007f24f8ef9d5e in _IO_new_file_xsputn (f=0x7f24f903a680 <_IO_2_1_stderr_>, data=<optimized out>, n=47) at fileops.c:1204
#6  0x00007f24f8ed0b32 in buffered_vfprintf (s=s@entry=0x7f24f903a680 <_IO_2_1_stderr_>, format=format@entry=0x7f24eada2848 "[%s] %s\n", args=args@entry=0x7f2466ffbeb0) at ../libio/libioP.h:839
#7  0x00007f24f8ece0b2 in _IO_vfprintf_internal (s=s@entry=0x7f24f903a680 <_IO_2_1_stderr_>, format=0x7f24eada2848 "[%s] %s\n", ap=ap@entry=0x7f2466ffbeb0) at vfprintf.c:1296
#8  0x00007f24f8f86866 in ___fprintf_chk (fp=0x7f24f903a680 <_IO_2_1_stderr_>, flag=1, format=<optimized out>) at fprintf_chk.c:35
#9  0x00007f24ead8aa5a in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#10 0x00007f24ead8ac34 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#11 0x00007f24ead8c588 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#12 0x00007f24ead82329 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#13 0x00007f24efdd8779 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#14 0x00007f24efdf7c8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#15 0x00007f24efe19204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#16 0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#17 0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#18 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7f24667fc700 (LWP 27013)):
#0  0x00007f24f67b73a9 in futex_reltimed_wait_cancelable (private=0, reltime=0x7f24667fb3c0, expected=0, futex_word=0x7f24667fb5a8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f24f67b73a9 in __pthread_cond_wait_common (abstime=0x7f24667fb460, mutex=0x7f24667fb558, cond=0x7f24667fb580) at pthread_cond_wait.c:533
#2  0x00007f24f67b73a9 in __pthread_cond_timedwait (cond=0x7f24667fb580, mutex=0x7f24667fb558, abstime=0x7f24667fb460) at pthread_cond_wait.c:667
#3  0x00007f24efe03a37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f24efe0630a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f24efdd8370 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f24efdf7c8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f24efe19204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7f24677fe700 (LWP 27011)):
#0  0x00007f24f67b73a9 in futex_reltimed_wait_cancelable (private=0, reltime=0x7f24677fd3c0, expected=0, futex_word=0x7f24677fd5a8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f24f67b73a9 in __pthread_cond_wait_common (abstime=0x7f24677fd460, mutex=0x7f24677fd558, cond=0x7f24677fd580) at pthread_cond_wait.c:533
#2  0x00007f24f67b73a9 in __pthread_cond_timedwait (cond=0x7f24677fd580, mutex=0x7f24677fd558, abstime=0x7f24677fd460) at pthread_cond_wait.c:667
#3  0x00007f24efe03a37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f24efe0630a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f24efdd8370 in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f24efdf7c8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f24efe19204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7f2467fff700 (LWP 27010)):
#0  0x00007f24f67b6fbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x564f98969cd8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f24f67b6fbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x564f98969c18, cond=0x564f98969cb0) at pthread_cond_wait.c:502
#2  0x00007f24f67b6fbc in __pthread_cond_wait (cond=0x564f98969cb0, mutex=0x564f98969c18) at pthread_cond_wait.c:655
#3  0x00007f24efe03969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f24f07697d8 in cc::SingleThreadTaskGraphRunner::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f24efe1bd86 in base::SimpleThread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f248cff9700 (LWP 27009)):
#0  0x00007f24f67b6fbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x7f248cff85f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f24f67b6fbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f248cff85a8, cond=0x7f248cff85d0) at pthread_cond_wait.c:502
#2  0x00007f24f67b6fbc in __pthread_cond_wait (cond=0x7f248cff85d0, mutex=0x7f248cff85a8) at pthread_cond_wait.c:655
#3  0x00007f24efe03969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f24efe06318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f24efe063af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f24efe0a998 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f24efe0bc7f in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f248d7fa700 (LWP 27008)):
#0  0x00007f24f8f84a8b in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:63
#1  0x00007f24f8f86814 in ___fprintf_chk (fp=0x7f24f903b8b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f24eada2848 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f24ead8aa5a in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f24ead8ac34 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f24ead8c588 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f24ead82329 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f24efdd8779 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f24efdf7c8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f24eef08dba in content::BrowserThreadImpl::IOThreadRun(base::RunLoop*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f24eef09267 in content::BrowserThreadImpl::Run(base::RunLoop*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f24efe19338 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#11 0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#12 0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#13 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f248dffb700 (LWP 27007)):
#0  0x00007f24f67b6fbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x7f248dffa5f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f24f67b6fbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f248dffa5a8, cond=0x7f248dffa5d0) at pthread_cond_wait.c:502
#2  0x00007f24f67b6fbc in __pthread_cond_wait (cond=0x7f248dffa5d0, mutex=0x7f248dffa5a8) at pthread_cond_wait.c:655
#3  0x00007f24efe03969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f24efe06318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f24efe063af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f24efe0a998 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f24efe0bc7f in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f248e7fc700 (LWP 27006)):
#0  0x00007f24f67b6fbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x7f248e7fb5f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f24f67b6fbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f248e7fb5a8, cond=0x7f248e7fb5d0) at pthread_cond_wait.c:502
#2  0x00007f24f67b6fbc in __pthread_cond_wait (cond=0x7f248e7fb5d0, mutex=0x7f248e7fb5a8) at pthread_cond_wait.c:655
#3  0x00007f24efe03969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f24efe06318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f24efe063af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f24efe0a998 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f24efe0be61 in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f248effd700 (LWP 27005)):
#0  0x00007f24f67b6fbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x7f248effc5f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f24f67b6fbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f248effc5a8, cond=0x7f248effc5d0) at pthread_cond_wait.c:502
#2  0x00007f24f67b6fbc in __pthread_cond_wait (cond=0x7f248effc5d0, mutex=0x7f248effc5a8) at pthread_cond_wait.c:655
#3  0x00007f24efe03969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f24efe06318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f24efe063af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f24efe0a998 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f24efe0bc7f in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f248f7fe700 (LWP 27004)):
#0  0x00007f24f67b6fbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x7f248f7fd5f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f24f67b6fbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f248f7fd5a8, cond=0x7f248f7fd5d0) at pthread_cond_wait.c:502
#2  0x00007f24f67b6fbc in __pthread_cond_wait (cond=0x7f248f7fd5d0, mutex=0x7f248f7fd5a8) at pthread_cond_wait.c:655
#3  0x00007f24efe03969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f24efe06318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f24efe063af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f24efe0a998 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f24efe0bc7f in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f248ffff700 (LWP 27003)):
#0  0x00007f24f67b6fbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x7f248fffe5f8) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f24f67b6fbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f248fffe5a8, cond=0x7f248fffe5d0) at pthread_cond_wait.c:502
#2  0x00007f24f67b6fbc in __pthread_cond_wait (cond=0x7f248fffe5d0, mutex=0x7f248fffe5a8) at pthread_cond_wait.c:655
#3  0x00007f24efe03969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f24efe06318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f24efe063af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f24efe0a998 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f24efe0bc7f in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f24a67fc700 (LWP 26999)):
#0  0x00007f24f67b73a9 in futex_reltimed_wait_cancelable (private=0, reltime=0x7f24a67fb400, expected=0, futex_word=0x7f24a67fb5e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f24f67b73a9 in __pthread_cond_wait_common (abstime=0x7f24a67fb4a0, mutex=0x7f24a67fb598, cond=0x7f24a67fb5c0) at pthread_cond_wait.c:533
#2  0x00007f24f67b73a9 in __pthread_cond_timedwait (cond=0x7f24a67fb5c0, mutex=0x7f24a67fb598, abstime=0x7f24a67fb4a0) at pthread_cond_wait.c:667
#3  0x00007f24efe03a37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f24efe0630a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f24efe063f2 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f24efe0a981 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f24efe0be61 in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f24a77fe700 (LWP 26997)):
#0  0x00007f24f67b73a9 in futex_reltimed_wait_cancelable (private=0, reltime=0x7f24a77fd400, expected=0, futex_word=0x7f24a77fd5e8) at ../sysdeps/unix/sysv/linux/futex-internal.h:142
#1  0x00007f24f67b73a9 in __pthread_cond_wait_common (abstime=0x7f24a77fd4a0, mutex=0x7f24a77fd598, cond=0x7f24a77fd5c0) at pthread_cond_wait.c:533
#2  0x00007f24f67b73a9 in __pthread_cond_timedwait (cond=0x7f24a77fd5c0, mutex=0x7f24a77fd598, abstime=0x7f24a77fd4a0) at pthread_cond_wait.c:667
#3  0x00007f24efe03a37 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f24efe0630a in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f24efe063f2 in base::WaitableEvent::TimedWait(base::TimeDelta const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f24efe0a981 in base::internal::SchedulerWorker::Delegate::WaitForWork(base::WaitableEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f24efe0be61 in base::internal::SchedulerWorker::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#10 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f24a7fff700 (LWP 26996)):
#0  0x00007f24f8f84a8b in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:63
#1  0x00007f24f8f86814 in ___fprintf_chk (fp=0x7f24f903b8b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f24eada2848 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f24ead8aa5a in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f24ead8ac34 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f24ead8c588 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f24ead82329 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f24efdd8779 in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f24efdf7c8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f24efe19204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f24c0820700 (LWP 26995)):
#0  0x00007f24f67b6fbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x7f24c081f588) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f24f67b6fbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x7f24c081f538, cond=0x7f24c081f560) at pthread_cond_wait.c:502
#2  0x00007f24f67b6fbc in __pthread_cond_wait (cond=0x7f24c081f560, mutex=0x7f24c081f538) at pthread_cond_wait.c:655
#3  0x00007f24efe03969 in base::ConditionVariable::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#4  0x00007f24efe06318 in base::WaitableEvent::TimedWaitUntil(base::TimeTicks const&) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#5  0x00007f24efe063af in base::WaitableEvent::Wait() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#6  0x00007f24efdd835f in base::MessagePumpDefault::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f24efdf7c8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f24efe19204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f24c1021700 (LWP 26994)):
#0  0x00007f24f8f84a8b in __lll_lock_wait_private () at ../sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:63
#1  0x00007f24f8f86814 in ___fprintf_chk (fp=0x7f24f903b8b0 <_IO_stdfile_2_lock>, flag=1, format=0x7f24eada2848 "[%s] %s\n") at fprintf_chk.c:30
#2  0x00007f24ead8aa5a in event_logv_ () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#3  0x00007f24ead8ac34 in event_warn () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#4  0x00007f24ead8c588 in  () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#5  0x00007f24ead82329 in event_base_loop () at /usr/lib/x86_64-linux-gnu/libevent-2.1.so.6
#6  0x00007f24efdd87cd in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#7  0x00007f24efdf7c8b in base::RunLoop::Run() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#8  0x00007f24efe19204 in base::Thread::ThreadMain() () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#9  0x00007f24efe14c81 in base::(anonymous namespace)::ThreadFunc(void*) () at /usr/lib/x86_64-linux-gnu/libQt5WebEngineCore.so.5
#10 0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f24c3752700 (LWP 26970)):
#0  0x00007f24f8f84b42 in __libc_disable_asynccancel () at ../sysdeps/unix/sysv/linux/x86_64/cancellation.S:85
#1  0x00007f24f8f68789 in __GI___libc_read (nbytes=16, buf=0x7f24c3751480, fd=17) at ../sysdeps/unix/sysv/linux/read.c:26
#2  0x00007f24f8f68789 in __GI___libc_read (fd=17, buf=0x7f24c3751480, nbytes=16) at ../sysdeps/unix/sysv/linux/read.c:24
#3  0x00007f24f5c72950 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f24f5c2caef in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f24f5c2cfc0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f24f5c2d13c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f24f947f16b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f24f942c14b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f24f927b106 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f24f9284cd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#11 0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#12 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f24d58f9700 (LWP 26955)):
#0  0x00007f24f8f6cb49 in __GI___poll (fds=0x7f24bc02b650, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f24f5c2d016 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f24f5c2d13c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f24f947f16b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f24f942c14b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f24f927b106 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f24f9284cd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f24d60fa700 (LWP 26952)):
#0  0x00007f24fa79917b in __tls_get_addr () at ../sysdeps/x86_64/tls_get_addr.S:49
#1  0x00007f24f9284056 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#2  0x00007f24f947f611 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#3  0x00007f24f5c2c9f1 in g_main_context_check () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f24f5c2cfc0 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f24f5c2d13c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f24f947f16b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f24f942c14b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f24f927b106 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#9  0x00007f24f9284cd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#10 0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#11 0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f24d68fb700 (LWP 26951)):
#0  0x00007f24f8f6cb49 in __GI___poll (fds=0x7f24c4004a10, nfds=1, timeout=9347) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f24f5c2d016 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f24f5c2d13c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f24f947f16b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f24f942c14b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f24f927b106 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f24f9284cd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#7  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#8  0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f24d7b0c700 (LWP 26950)):
#0  0x00007f24f8f6cb49 in __GI___poll (fds=0x7f24cc03db10, nfds=1, timeout=3353) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f24f5c2d016 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f24f5c2d13c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f24f947f16b in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#4  0x00007f24f942c14b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#5  0x00007f24f927b106 in QThread::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#6  0x00007f24f8a57545 in  () at /usr/lib/x86_64-linux-gnu/libQt5DBus.so.5
#7  0x00007f24f9284cd7 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#8  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#9  0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f24ddaf6700 (LWP 26949)):
#0  0x00007f24f67b6fbc in futex_wait_cancelable (private=0, expected=0, futex_word=0x564f97fbf6cc) at ../sysdeps/unix/sysv/linux/futex-internal.h:88
#1  0x00007f24f67b6fbc in __pthread_cond_wait_common (abstime=0x0, mutex=0x564f97fbf678, cond=0x564f97fbf6a0) at pthread_cond_wait.c:502
#2  0x00007f24f67b6fbc in __pthread_cond_wait (cond=0x564f97fbf6a0, mutex=0x564f97fbf678) at pthread_cond_wait.c:655
#3  0x00007f24de12db32 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#4  0x00007f24de12d6f7 in  () at /usr/lib/x86_64-linux-gnu/dri/i965_dri.so
#5  0x00007f24f67b0fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#6  0x00007f24f8f7780f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f24e04daf00 (LWP 26945)):
[KCrash Handler]
#6  0x00007f24f76de15a in QHash<QByteArray, Akonadi::Attribute*>::findNode(QByteArray const&, unsigned int*) const (this=this@entry=0x28, akey=..., ahp=ahp@entry=0x0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qhash.h:926
#7  0x00007f24f77242ef in QHash<QByteArray, Akonadi::Attribute*>::contains(QByteArray const&) const (akey=..., this=0x28) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qhash.h:904
#8  0x00007f24f77242ef in Akonadi::Item::hasAttribute(QByteArray const&) const (this=this@entry=0x7f24f94e8630, type=...) at ./src/core/item.cpp:253
#9  0x00007f24f780ea7e in Akonadi::EntityTreeModelPrivate::isHiddenImpl<Akonadi::Item>(Akonadi::Item const&, Node::Type) const (this=0x564f98590fb0, entity=..., type=<optimized out>) at ./src/core/models/entitytreemodel_p.cpp:281
#10 0x00007f24f780c154 in Akonadi::EntityTreeModelPrivate::isHidden(Akonadi::Item const&) const (item=..., this=0x564f98590fb0) at ./src/core/models/entitytreemodel_p.cpp:1118
#11 0x00007f24f780c154 in Akonadi::EntityTreeModelPrivate::monitoredItemRemoved(Akonadi::Item const&, Akonadi::Collection const&) (this=this@entry=0x564f98590fb0, item=..., parentCollection=...) at ./src/core/models/entitytreemodel_p.cpp:1118
#12 0x00007f24f77fc42a in Akonadi::EntityTreeModel::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=0x7ffec9c77c60) at ./src/core/models/entitytreemodel.h:681
#13 0x00007f24f94566cb in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#14 0x00007f24f7736995 in Akonadi::Monitor::itemRemoved(Akonadi::Item const&) (this=this@entry=0x564f98473e10, _t1=...) at ./obj-x86_64-linux-gnu/src/core/KF5AkonadiCore_autogen/include/moc_monitor.cpp:946
#15 0x00007f24f77411df in Akonadi::MonitorPrivate::emitItemsNotification(Akonadi::Protocol::ItemChangeNotification const&, QVector<Akonadi::Item> const&, Akonadi::Collection const&, Akonadi::Collection const&) (this=0x564f98453f60, msg_=..., items=..., collection=..., collectionDest=...) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qarraydata.h:209
#16 0x00007f24f7741dcc in Akonadi::MonitorPrivate::emitNotification(QSharedPointer<Akonadi::Protocol::ChangeNotification> const&) (this=this@entry=0x564f98453f60, msg=...) at ./src/core/monitor_p.cpp:558
#17 0x00007f24f76edd9e in Akonadi::ChangeRecorderPrivate::emitNotification(QSharedPointer<Akonadi::Protocol::ChangeNotification> const&) (this=0x564f98453f60, msg=...) at ./src/core/changerecorder_p.cpp:369
#18 0x00007f24f7744a41 in Akonadi::MonitorPrivate::flushPipeline() (this=0x564f98453f60) at ./src/core/monitor_p.cpp:983
#19 0x00007f24f7744d89 in Akonadi::MonitorPrivate::dataAvailable() (this=0x564f98453f60) at ./src/core/monitor_p.cpp:992
#20 0x00007f24f7738299 in Akonadi::Monitor::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ./obj-x86_64-linux-gnu/src/core/KF5AkonadiCore_autogen/include/moc_monitor.cpp:339
#21 0x00007f24f94566cb in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#22 0x00007f24f76e1713 in Akonadi::EntityCache<Akonadi::Collection, Akonadi::CollectionFetchJob, Akonadi::CollectionFetchScope>::processResult(KJob*) (this=0x7f24cc03b840, job=<optimized out>) at ./src/core/entitycache_p.h:245
#23 0x00007f24f771b3e4 in Akonadi::EntityCacheBase::qt_static_metacall(QObject*, QMetaObject::Call, int, void**) (_o=<optimized out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at ./obj-x86_64-linux-gnu/src/core/KF5AkonadiCore_autogen/include/moc_entitycache_p.cpp:82
#24 0x00007f24f94566cb in QMetaObject::activate(QObject*, int, int, void**) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#25 0x00007f24fa2e0c6c in KJob::result(KJob*, KJob::QPrivateSignal) (this=this@entry=0x564fa66a10d0, _t1=<optimized out>, _t1@entry=0x564fa66a10d0, _t2=...) at ./obj-x86_64-linux-gnu/src/lib/KF5CoreAddons_autogen/include/moc_kjob.cpp:569
#26 0x00007f24fa2e1733 in KJob::finishJob(bool) (this=0x564fa66a10d0, emitResult=<optimized out>) at ./src/lib/jobs/kjob.cpp:109
#27 0x00007f24f94624a6 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#28 0x00007f24f9456f3b in QObject::event(QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#29 0x00007f24f9da3491 in QApplicationPrivate::notify_helper(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#30 0x00007f24f9daaad0 in QApplication::notify(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Widgets.so.5
#31 0x00007f24f942d479 in QCoreApplication::notifyInternal2(QObject*, QEvent*) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#32 0x00007f24f947e568 in QTimerInfoList::activateTimers() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#33 0x00007f24f947edc4 in  () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#34 0x00007f24f5c2ce0e in g_main_context_dispatch () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#35 0x00007f24f5c2d0a8 in  () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#36 0x00007f24f5c2d13c in g_main_context_iteration () at /usr/lib/x86_64-linux-gnu/libglib-2.0.so.0
#37 0x00007f24f947f153 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#38 0x00007f24e0118861 in  () at /usr/lib/x86_64-linux-gnu/libQt5XcbQpa.so.5
#39 0x00007f24f942c14b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#40 0x00007f24f94342c2 in QCoreApplication::exec() () at /usr/lib/x86_64-linux-gnu/libQt5Core.so.5
#41 0x0000564f9663d33b in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qcoreapplication.h:116
[Inferior 1 (process 26945) detached]
Comment 8 Sandro Knauß 2019-02-10 23:18:46 UTC
The backtrace is now showing the correct traceback and we can see at what line it went off. But this look fine and you have valid looking this=0x564f98590fb0. It looks like dvratil already said, like we try to access an already deleted item. That's why we need valgrind.


#6  0x00007f24f76de15a in QHash<QByteArray, Akonadi::Attribute*>::findNode(QByteArray const&, unsigned int*) const (this=this@entry=0x28, akey=..., ahp=ahp@entry=0x0) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qhash.h:926
#7  0x00007f24f77242ef in QHash<QByteArray, Akonadi::Attribute*>::contains(QByteArray const&) const (akey=..., this=0x28) at /usr/include/x86_64-linux-gnu/qt5/QtCore/qhash.h:904
#8  0x00007f24f77242ef in Akonadi::Item::hasAttribute(QByteArray const&) const (this=this@entry=0x7f24f94e8630, type=...) at ./src/core/item.cpp:253
#9  0x00007f24f780ea7e in Akonadi::EntityTreeModelPrivate::isHiddenImpl<Akonadi::Item>(Akonadi::Item const&, Node::Type) const (this=0x564f98590fb0, entity=..., type=<optimized out>) at ./src/core/models/entitytreemodel_p.cpp:281
#10 0x00007f24f780c154 in Akonadi::EntityTreeModelPrivate::isHidden(Akonadi::Item const&) const (item=..., this=0x564f98590fb0) at ./src/core/models/entitytreemodel_p.cpp:1118
  #11 0x00007f24f780c154 in Akonadi::EntityTreeModelPrivate::monitoredItemRemoved(Akonadi::Item const&, Akonadi::Collection const&) (this=this@entry=0x564f98590fb0, item=..., parentCollection=...) at ./src/core/models/entitytreemodel_p.cpp:1118
Comment 9 Martin Steigerwald 2019-03-04 09:20:04 UTC
I have KMail running under valgrind now. Did not like to crash so far, tough.

Once it crashes, it is safe to send the valgrind log to the bugtracker regarding privacy? It currently is 2,1 MiB and it did not grow recently anymore.
Comment 10 Martin Steigerwald 2019-03-04 16:17:31 UTC
Created attachment 118539 [details]
second valgrind run, with error-limit=no

Second valgrind run:

valgrind --error-limit=no --track-origins=yes --num-callers=50 kmail &> 404052-kmail-valgrind.log

KMail actually crashed. It did not in the first run.

I also installed some additional debug packages, but I still missed some, as I was not aware of "find-dbgsym-packages" from Debian package "debian-goodies".

I am uploading in the hope that it may still be enough to pin-point the issue. I may have a go with all debug packages installed later this week, but for now I have enough of a KMail that is so slow it that I can see each rendering operation in slow motion.
Comment 11 Martin Steigerwald 2019-03-05 13:28:12 UTC
Created attachment 118575 [details]
third valgrind run, with all dbgsym package and crash

Another valgrind run. Hopefully this one is enough to find the issue.

This time I have all debug symbols installed.
Comment 12 Christian Hilberg 2019-03-15 09:27:38 UTC
https://bugs.kde.org/show_bug.cgi?id=405491 might be related, though no mail filtering needed (opening a few mails is enough)
Comment 13 Martin Steigerwald 2019-03-15 10:00:43 UTC
Thanks, Christian.

Dan, could you have the look at the valgrind traces I produced? The third one would be the most accurate one, I believe.
Comment 14 Martin Steigerwald 2019-04-04 11:07:45 UTC
Dan, I just like to remind kindly. This regular crash together with a host of other issues add up and make the KDEPIM experience with KDEPIM/Akonadi 18.08 quite a bit less enjoyable than with previous versions. I do not have access to KDEPIM/Akonadi 18.12 as regular Debian packages yet and this likely will remain so until Debian 10 is released (Freeze). As far as it affects other users it would be important to get a fix into Debian 10.

And yes, I know you do this in your spare time. But if you do not have time to look into the backtraces, would you please clearly say so, so I could try to find someone else to look into it?

I likely will be mostly or completely offline from Friday to Monday, but after that I'd be able to answer any questions you may have.
Comment 15 Christoph Feck 2019-04-25 19:31:42 UTC
*** Bug 405878 has been marked as a duplicate of this bug. ***
Comment 16 Justin Zobel 2022-09-22 12:29:31 UTC
Thank you for reporting this crash in KDE software. As it has been a while since this issue was reported, can we please ask you to see if you can reproduce the crash with a recent software version?

If you can reproduce the issue, please change the status to "CONFIRMED" when replying. Thank you!
Comment 17 Bug Janitor Service 2022-10-07 04:51:14 UTC
Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

For more information about our bug triaging procedures please read the
wiki located here:
https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging

If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
ready to be confirmed.

Thank you for helping us make KDE software even better for everyone!
Comment 18 Martin Steigerwald 2022-10-07 08:29:43 UTC
I still see KMail crashing from time to time during filtering mails in a Maildir resource received by POP3 resource.

KMail 5.21.0 (22.08.0) on Devuan Ceres with KDE Plasma 5.25.5, KF5 5.98.0 and Qt 5.15.6.

I did not verify whether the back trace is similar as I saw bug reports regarding KDEPIM sitting in Bugzilla for ages and I am currently not convinced to spend time on it. I took a long time to provide quite a lot of accurate bug reports with a lot of details often with little result. However… if there is a developer willing to look into this bug then I am willing to invest time to create another back trace and answer further questions. (No offense meant. The situation is as it is.)