Bug 420022

Summary:	Falkon crash within Plasma Wayland session
Product:	[Applications] Falkon	Reporter:	Andreas Sturmlechner <asturm>
Component:	general	Assignee:	David Rosca <nowrep>
Status:	RESOLVED UPSTREAM
Severity:	crash	CC:	asturm
Priority:	NOR	Keywords:	drkonqi, wayland-only
Version First Reported In:	3.1.0
Target Milestone:	---
Platform:	Compiled Sources
OS:	Linux
Latest Commit:		Version Fixed In:
Sentry Crash Report:
Attachments:	New crash information added by DrKonqi

Description Andreas Sturmlechner 2020-04-13 11:36:41 UTC

Application: falkon (3.1.0)
 (Compiled from sources)
Qt Version: 5.14.2
Frameworks Version: 5.69.0
Operating System: Linux 5.6.3-gentoo x86_64
Windowing system: Wayland
Distribution: "Gentoo Base System release 2.7"

-- Information about the crash:
The crash happened during "normal" webbrowser use, unfortunately I can't give a better description. At least the backtrace contains debug symbols. I'm typing this blindly, because drkonqi is slightly broken as well in this Wayland session it seems. ;)

The crash can be reproduced sometimes.

-- Backtrace:
Application: Falkon (falkon), signal: Aborted
Using host libthread_db library "/lib64/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f8894bdaa40 (LWP 21230))]

Thread 31 (Thread 0x7f88119f9700 (LWP 23560)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7f88119f8910, clockid=<optimized out>, expected=0, futex_word=0x7f88119f8a38) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  __pthread_cond_wait_common (abstime=0x7f88119f8910, clockid=<optimized out>, mutex=0x7f88119f89e8, cond=0x7f88119f8a10) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f88119f8a10, mutex=0x7f88119f89e8, abstime=0x7f88119f8910) at pthread_cond_wait.c:656
#3  0x00007f889fcdde46 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x000000003b627d8b in  ()
#5  0x00000000000165c2 in  ()
#6  0x000000003b628173 in  ()
#7  0x0000000000000000 in  ()

Thread 30 (Thread 0x7f88133fd700 (LWP 23559)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7f88133fc910, clockid=<optimized out>, expected=0, futex_word=0x7f88133fca38) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  __pthread_cond_wait_common (abstime=0x7f88133fc910, clockid=<optimized out>, mutex=0x7f88133fc9e8, cond=0x7f88133fca10) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f88133fca10, mutex=0x7f88133fc9e8, abstime=0x7f88133fc910) at pthread_cond_wait.c:656
#3  0x00007f889fcdde46 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x0000000017e03f9d in  ()
#5  0x00000000000165c3 in  ()
#6  0x0000000017e04385 in  ()
#7  0x0000000000000000 in  ()

Thread 29 (Thread 0x7f881e71d700 (LWP 23558)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7f881e71c910, clockid=<optimized out>, expected=0, futex_word=0x7f881e71ca38) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  __pthread_cond_wait_common (abstime=0x7f881e71c910, clockid=<optimized out>, mutex=0x7f881e71c9e8, cond=0x7f881e71ca10) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f881e71ca10, mutex=0x7f881e71c9e8, abstime=0x7f881e71c910) at pthread_cond_wait.c:656
#3  0x00007f889fcdde46 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x000000000d22e27d in  ()
#5  0x00000000000165c3 in  ()
#6  0x000000000d22e27d in  ()
#7  0x0000000000000000 in  ()

Thread 28 (Thread 0x7f881d1d2700 (LWP 23557)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7f881d1d1910, clockid=<optimized out>, expected=0, futex_word=0x7f881d1d1a38) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  __pthread_cond_wait_common (abstime=0x7f881d1d1910, clockid=<optimized out>, mutex=0x7f881d1d19e8, cond=0x7f881d1d1a10) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f881d1d1a10, mutex=0x7f881d1d19e8, abstime=0x7f881d1d1910) at pthread_cond_wait.c:656
#3  0x00007f889fcdde46 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x000000000d48e3bc in  ()
#5  0x00000000000165c3 in  ()
#6  0x000000000d48e3bc in  ()
#7  0x0000000000000000 in  ()

Thread 27 (Thread 0x7f881ef9e700 (LWP 23556)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7f881ef9d910, clockid=<optimized out>, expected=0, futex_word=0x7f881ef9da38) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  __pthread_cond_wait_common (abstime=0x7f881ef9d910, clockid=<optimized out>, mutex=0x7f881ef9d9e8, cond=0x7f881ef9da10) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f881ef9da10, mutex=0x7f881ef9d9e8, abstime=0x7f881ef9d910) at pthread_cond_wait.c:656
#3  0x00007f889fcdde46 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x0000000017eb2153 in  ()
#5  0x00000000000165c3 in  ()
#6  0x0000000017eb2153 in  ()
#7  0x0000000000000000 in  ()

Thread 26 (Thread 0x7f87f0df8700 (LWP 23555)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7f87f0df7910, clockid=<optimized out>, expected=0, futex_word=0x7f87f0df7a38) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  __pthread_cond_wait_common (abstime=0x7f87f0df7910, clockid=<optimized out>, mutex=0x7f87f0df79e8, cond=0x7f87f0df7a10) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f87f0df7a10, mutex=0x7f87f0df79e8, abstime=0x7f87f0df7910) at pthread_cond_wait.c:656
#3  0x00007f889fcdde46 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x000000000d36fe91 in  ()
#5  0x00000000000165c3 in  ()
#6  0x000000000d36fe91 in  ()
#7  0x0000000000000000 in  ()

Thread 25 (Thread 0x7f881c9d1700 (LWP 23554)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7f881c9d0910, clockid=<optimized out>, expected=0, futex_word=0x7f881c9d0a38) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  __pthread_cond_wait_common (abstime=0x7f881c9d0910, clockid=<optimized out>, mutex=0x7f881c9d09e8, cond=0x7f881c9d0a10) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f881c9d0a10, mutex=0x7f881c9d09e8, abstime=0x7f881c9d0910) at pthread_cond_wait.c:656
#3  0x00007f889fcdde46 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x000000000d2d0acf in  ()
#5  0x00000000000165c3 in  ()
#6  0x000000000d2d0acf in  ()
#7  0x0000000000000000 in  ()

Thread 24 (Thread 0x7f881fafe700 (LWP 23501)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7f881fafd910, clockid=<optimized out>, expected=0, futex_word=0x7f881fafda38) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  __pthread_cond_wait_common (abstime=0x7f881fafd910, clockid=<optimized out>, mutex=0x7f881fafd9e8, cond=0x7f881fafda10) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f881fafda10, mutex=0x7f881fafd9e8, abstime=0x7f881fafd910) at pthread_cond_wait.c:656
#3  0x00007f889fcdde46 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x000000001b7c1636 in  ()
#5  0x00000000000165cd in  ()
#6  0x000000001b7c1a1e in  ()
#7  0x0000000000000000 in  ()

Thread 23 (Thread 0x7f87f25fc700 (LWP 23308)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7f87f25fbaa0, clockid=<optimized out>, expected=0, futex_word=0x55a2e10db224) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  __pthread_cond_wait_common (abstime=0x7f87f25fbaa0, clockid=<optimized out>, mutex=0x55a2e10db1d0, cond=0x55a2e10db1f8) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x55a2e10db1f8, mutex=0x55a2e10db1d0, abstime=0x7f87f25fbaa0) at pthread_cond_wait.c:656
#3  0x00007f88a521f695 in QWaitConditionPrivate::wait_relative(QDeadlineTimer) (this=0x55a2e10db1d0, deadline=...) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/thread/qwaitcondition_unix.cpp:136
#4  QWaitConditionPrivate::wait(QDeadlineTimer) (deadline=..., this=0x55a2e10db1d0) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/thread/qwaitcondition_unix.cpp:144
#5  QWaitCondition::wait(QMutex*, QDeadlineTimer) (this=<optimized out>, mutex=0x55a2db89efe8, deadline=...) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/thread/qwaitcondition_unix.cpp:225
#6  0x00007f88a521f787 in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x55a2db76b4c0, mutex=mutex@entry=0x55a2db89efe8, time=<optimized out>) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/thread/qwaitcondition_unix.cpp:209
#7  0x00007f88a521d6bb in QThreadPoolThread::run() (this=0x55a2db76b4b0) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/include/QtCore/../../src/corelib/thread/qmutex.h:270
#8  0x00007f88a521a3cb in QThreadPrivate::start(void*) (arg=0x55a2db76b4b0) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/thread/qthread_unix.cpp:342
#9  0x00007f889c8e2e97 in start_thread (arg=<optimized out>) at pthread_create.c:479
#10 0x00007f88a4e1766f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7f8813bfe700 (LWP 23306)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7f8813bfdaa0, clockid=<optimized out>, expected=0, futex_word=0x55a2db8a4900) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  __pthread_cond_wait_common (abstime=0x7f8813bfdaa0, clockid=<optimized out>, mutex=0x55a2db8a48b0, cond=0x55a2db8a48d8) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x55a2db8a48d8, mutex=0x55a2db8a48b0, abstime=0x7f8813bfdaa0) at pthread_cond_wait.c:656
#3  0x00007f88a521f695 in QWaitConditionPrivate::wait_relative(QDeadlineTimer) (this=0x55a2db8a48b0, deadline=...) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/thread/qwaitcondition_unix.cpp:136
#4  QWaitConditionPrivate::wait(QDeadlineTimer) (deadline=..., this=0x55a2db8a48b0) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/thread/qwaitcondition_unix.cpp:144
#5  QWaitCondition::wait(QMutex*, QDeadlineTimer) (this=<optimized out>, mutex=0x55a2db89efe8, deadline=...) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/thread/qwaitcondition_unix.cpp:225
#6  0x00007f88a521f787 in QWaitCondition::wait(QMutex*, unsigned long) (this=this@entry=0x55a2db8a4790, mutex=mutex@entry=0x55a2db89efe8, time=<optimized out>) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/thread/qwaitcondition_unix.cpp:209
#7  0x00007f88a521d6bb in QThreadPoolThread::run() (this=0x55a2db8a4780) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/include/QtCore/../../src/corelib/thread/qmutex.h:270
#8  0x00007f88a521a3cb in QThreadPrivate::start(void*) (arg=0x55a2db8a4780) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/thread/qthread_unix.cpp:342
#9  0x00007f889c8e2e97 in start_thread (arg=<optimized out>) at pthread_create.c:479
#10 0x00007f88a4e1766f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7f8812bfb700 (LWP 23209)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7f8812bfa910, clockid=<optimized out>, expected=0, futex_word=0x7f8812bfaa38) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  __pthread_cond_wait_common (abstime=0x7f8812bfa910, clockid=<optimized out>, mutex=0x7f8812bfa9e8, cond=0x7f8812bfaa10) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f8812bfaa10, mutex=0x7f8812bfa9e8, abstime=0x7f8812bfa910) at pthread_cond_wait.c:656
#3  0x00007f889fcdde46 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x000000000d17332e in  ()
#5  0x00000000000165c3 in  ()
#6  0x000000000d173716 in  ()
#7  0x0000000000000000 in  ()

Thread 20 (Thread 0x7f8824f0c700 (LWP 21796)):
#0  0x00007f88a4e17996 in epoll_wait (epfd=207, events=0x7f8818002050, maxevents=32, timeout=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x00007f889b8d6738 in  () at /usr/lib64/libevent-2.1.so.7
#2  0x00007f889b8cc6a9 in event_base_loop () at /usr/lib64/libevent-2.1.so.7
#3  0x00007f889fce4c9e in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f889fc8cc7f in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::Run(bool, base::TimeDelta) () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f8824f0baa8 in  ()
#6  0x7fffffffffffffff in  ()
#7  0x00007f8824f0ba50 in  ()
#8  0x00007f8824f0bb30 in  ()
#9  0x7fffffffffffffff in  ()
#10 0x00007f8824f0baa0 in  ()
#11 0x00007f8824f0bb10 in  ()
#12 0x00007f889fc6bdf9 in base::RunLoop::RunWithTimeout(base::TimeDelta) () at /usr/lib64/libQt5WebEngineCore.so.5
#13 0x0000005b0000006e in  ()
#14 0x000055a2db7e4648 in  ()
#15 0x000055a2db7d5ea8 in  ()
#16 0x0000000000000000 in  ()

Thread 19 (Thread 0x7f8826d35700 (LWP 21795)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x7f8826d34a48) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f8826d349f8, cond=0x7f8826d34a20) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f8826d34a20, mutex=0x7f8826d349f8) at pthread_cond_wait.c:638
#3  0x00007f889fcddd4c in base::ConditionVariable::Wait() () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x0000000000000000 in  ()

Thread 18 (Thread 0x7f88455fa700 (LWP 21253)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x7f88455f9a48) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f88455f99f8, cond=0x7f88455f9a20) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f88455f9a20, mutex=0x7f88455f99f8) at pthread_cond_wait.c:638
#3  0x00007f889fcddd4c in base::ConditionVariable::Wait() () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x0000000000000000 in  ()

Thread 17 (Thread 0x7f8845dfb700 (LWP 21252)):
#0  0x00007f88a4e17996 in epoll_wait (epfd=60, events=0x7f8834002050, maxevents=32, timeout=30000) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x00007f889b8d6738 in  () at /usr/lib64/libevent-2.1.so.7
#2  0x00007f889b8cc6a9 in event_base_loop () at /usr/lib64/libevent-2.1.so.7
#3  0x00007f889fce4c4a in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f889fc8cc7f in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::Run(bool, base::TimeDelta) () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f8845dfaaa8 in  ()
#6  0x7fffffffffffffff in  ()
#7  0x00007f8845dfaa50 in  ()
#8  0x00007f8845dfab30 in  ()
#9  0x7fffffffffffffff in  ()
#10 0x00007f8845dfaaa0 in  ()
#11 0x00007f8845dfab10 in  ()
#12 0x00007f889fc6bdf9 in base::RunLoop::RunWithTimeout(base::TimeDelta) () at /usr/lib64/libQt5WebEngineCore.so.5
#13 0x0000005b0000006e in  ()
#14 0x00007f88a47fb4c0 in (anonymous namespace)::g_internal_cache_thread () at /usr/lib64/libQt5WebEngineCore.so.5
#15 0x00007f88600c20b8 in  ()
#16 0x0000000000000000 in  ()

Thread 16 (Thread 0x7f88467fc700 (LWP 21251)):
#0  0x00007f88a4e0d06f in __GI___poll (fds=0x7f8830004e60, nfds=1, timeout=9614) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f889c15336e in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7f8830004e60, timeout=<optimized out>, context=0x7f8830000c20) at ../glib-2.64.1/glib/gmain.c:4346
#2  g_main_context_iterate (context=context@entry=0x7f8830000c20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib-2.64.1/glib/gmain.c:4042
#3  0x00007f889c15348f in g_main_context_iteration (context=0x7f8830000c20, may_block=may_block@entry=1) at ../glib-2.64.1/glib/gmain.c:4108
#4  0x00007f88a5418290 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f8830000b60, flags=...) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/kernel/qeventdispatcher_glib.cpp:423
#5  0x00007f88a53c308b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f88467fbb60, flags=..., flags@entry=...) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/include/QtCore/../../src/corelib/global/qflags.h:136
#6  0x00007f88a521939e in QThread::exec() (this=<optimized out>) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/include/QtCore/../../src/corelib/global/qflags.h:118
#7  0x00007f88a521a3cb in QThreadPrivate::start(void*) (arg=0x55a2cd8402a0) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/thread/qthread_unix.cpp:342
#8  0x00007f889c8e2e97 in start_thread (arg=<optimized out>) at pthread_create.c:479
#9  0x00007f88a4e1766f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f8846ffd700 (LWP 21250)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7f8846ffc800, clockid=<optimized out>, expected=0, futex_word=0x7f8846ffc928) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  __pthread_cond_wait_common (abstime=0x7f8846ffc800, clockid=<optimized out>, mutex=0x7f8846ffc8d8, cond=0x7f8846ffc900) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f8846ffc900, mutex=0x7f8846ffc8d8, abstime=0x7f8846ffc800) at pthread_cond_wait.c:656
#3  0x00007f889fcdde46 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x0000000020f04ea9 in  ()
#5  0x00000000000165cd in  ()
#6  0x000000001ff37049 in  ()
#7  0x0000000000000000 in  ()

Thread 14 (Thread 0x7f88477fe700 (LWP 21249)):
#0  0x00007f88a4e17996 in epoll_wait (epfd=35, events=0x7f8838002050, maxevents=32, timeout=-1) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x00007f889b8d6738 in  () at /usr/lib64/libevent-2.1.so.7
#2  0x00007f889b8cc6a9 in event_base_loop () at /usr/lib64/libevent-2.1.so.7
#3  0x00007f889fce4c9e in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f889fc8cc7f in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::Run(bool, base::TimeDelta) () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f88477fdaa8 in  ()
#6  0x7fffffffffffffff in  ()
#7  0x00007f88477fda50 in  ()
#8  0x00007f88477fdb30 in  ()
#9  0x7fffffffffffffff in  ()
#10 0x00007f88477fdaa0 in  ()
#11 0x00007f88477fdb10 in  ()
#12 0x00007f889fc6bdf9 in base::RunLoop::RunWithTimeout(base::TimeDelta) () at /usr/lib64/libQt5WebEngineCore.so.5
#13 0x0000005b0000006e in  ()
#14 0x00007f8840001ea8 in  ()
#15 0x00007f8840001fe8 in  ()
#16 0x0000000000000000 in  ()

Thread 13 (Thread 0x7f8847fff700 (LWP 21248)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7f8847ffe800, clockid=<optimized out>, expected=0, futex_word=0x7f8847ffe928) at ../sysdeps/unix/sysv/linux/futex-internal.h:208
#1  __pthread_cond_wait_common (abstime=0x7f8847ffe800, clockid=<optimized out>, mutex=0x7f8847ffe8d8, cond=0x7f8847ffe900) at pthread_cond_wait.c:520
#2  __pthread_cond_timedwait (cond=0x7f8847ffe900, mutex=0x7f8847ffe8d8, abstime=0x7f8847ffe800) at pthread_cond_wait.c:656
#3  0x00007f889fcdde46 in base::ConditionVariable::TimedWait(base::TimeDelta const&) () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x000000001fe13e21 in  ()
#5  0x00000000000165cd in  ()
#6  0x0000000019953671 in  ()
#7  0x0000000000000000 in  ()

Thread 12 (Thread 0x7f8864ff9700 (LWP 21247)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x7f8864ff8938) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x7f8864ff88e8, cond=0x7f8864ff8910) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x7f8864ff8910, mutex=0x7f8864ff88e8) at pthread_cond_wait.c:638
#3  0x00007f889fcddd4c in base::ConditionVariable::Wait() () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x0000000000000000 in  ()

Thread 11 (Thread 0x7f88657fa700 (LWP 21246)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x55a2cd6ac5ec) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55a2cd6ac528, cond=0x55a2cd6ac5c0) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55a2cd6ac5c0, mutex=0x55a2cd6ac528) at pthread_cond_wait.c:638
#3  0x00007f889fcddd4c in base::ConditionVariable::Wait() () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x0000000000000000 in  ()

Thread 10 (Thread 0x7f8865ffb700 (LWP 21245)):
#0  0x00007f88a4e0f3b3 in __GI___select (nfds=31, readfds=0x7f8865ffaa80, writefds=0x0, exceptfds=0x0, timeout=0x0) at ../sysdeps/unix/sysv/linux/select.c:41
#1  0x00007f889fc37cc4 in base::(anonymous namespace)::InotifyReaderThreadDelegate::ThreadMain() [clone .part.0] () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x00007f889fc3811c in base::(anonymous namespace)::InotifyReaderThreadDelegate::ThreadMain() () at /usr/lib64/libQt5WebEngineCore.so.5
#3  0x000000000000000e in  ()
#4  0x5f796669746f6e69 in  ()
#5  0x8700726564616572 in  ()
#6  0x0000000000000000 in  ()

Thread 9 (Thread 0x7f8867fff700 (LWP 21241)):
#0  0x00007f88a4e17996 in epoll_wait (epfd=25, events=0x7f8860002010, maxevents=32, timeout=7206) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x00007f889b8d6738 in  () at /usr/lib64/libevent-2.1.so.7
#2  0x00007f889b8cc6a9 in event_base_loop () at /usr/lib64/libevent-2.1.so.7
#3  0x00007f889fce4c4a in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f889fc8cc7f in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::Run(bool, base::TimeDelta) () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f8867ffea88 in  ()
#6  0x7fffffffffffffff in  ()
#7  0x00007f8867ffea30 in  ()
#8  0x00007f8867ffeb30 in  ()
#9  0x7fffffffffffffff in  ()
#10 0x00007f8867ffea80 in  ()
#11 0x00007f8867ffeaf0 in  ()
#12 0x00007f889fc6bdf9 in base::RunLoop::RunWithTimeout(base::TimeDelta) () at /usr/lib64/libQt5WebEngineCore.so.5
#13 0x0000000000000000 in  ()

Thread 8 (Thread 0x7f8875674700 (LWP 21239)):
#0  0x00007f88a4e17996 in epoll_wait (epfd=19, events=0x7f8868002050, maxevents=32, timeout=18292) at ../sysdeps/unix/sysv/linux/epoll_wait.c:30
#1  0x00007f889b8d6738 in  () at /usr/lib64/libevent-2.1.so.7
#2  0x00007f889b8cc6a9 in event_base_loop () at /usr/lib64/libevent-2.1.so.7
#3  0x00007f889fce4c4a in base::MessagePumpLibevent::Run(base::MessagePump::Delegate*) () at /usr/lib64/libQt5WebEngineCore.so.5
#4  0x00007f889fc8cc7f in base::sequence_manager::internal::ThreadControllerWithMessagePumpImpl::Run(bool, base::TimeDelta) () at /usr/lib64/libQt5WebEngineCore.so.5
#5  0x00007f8875673b30 in  ()
#6  0x7fffffffffffffff in  ()
#7  0x7fffffffffffffff in  ()
#8  0x00007f8875673b30 in  ()
#9  0x7fffffffffffffff in  ()
#10 0x00007f8875673a80 in  ()
#11 0x00007f8875673af0 in  ()
#12 0x00007f889fc6bdf9 in base::RunLoop::RunWithTimeout(base::TimeDelta) () at /usr/lib64/libQt5WebEngineCore.so.5
#13 0x0000000000000000 in  ()

Thread 7 (Thread 0x7f8875e75700 (LWP 21237)):
#0  0x00007f88a4e0d06f in __GI___poll (fds=0x7f8875e749e0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f88a2bb4012 in content::SandboxIPCHandler::Run() () at /usr/lib64/libQt5WebEngineCore.so.5
#2  0x000000010000000f in  ()
#3  0x0000000000000020 in  ()
#4  0x00007f8875e74a50 in  ()
#5  0x0000000000000013 in  ()
#6  0x00007f8800000002 in  ()
#7  0x00007f8875e74a60 in  ()
#8  0x878ebdb482d67e00 in  ()
#9  0x0000000000000000 in  ()

Thread 6 (Thread 0x7f8881b04700 (LWP 21236)):
#0  0x00007f88a4e0d06f in __GI___poll (fds=0x7f8878005240, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f889c15336e in g_main_context_poll (priority=<optimized out>, n_fds=3, fds=0x7f8878005240, timeout=<optimized out>, context=0x7f8878000c20) at ../glib-2.64.1/glib/gmain.c:4346
#2  g_main_context_iterate (context=context@entry=0x7f8878000c20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib-2.64.1/glib/gmain.c:4042
#3  0x00007f889c15348f in g_main_context_iteration (context=0x7f8878000c20, may_block=may_block@entry=1) at ../glib-2.64.1/glib/gmain.c:4108
#4  0x00007f88a5418290 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x7f8878000b60, flags=...) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/kernel/qeventdispatcher_glib.cpp:423
#5  0x00007f88a53c308b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7f8881b03b30, flags=..., flags@entry=...) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/include/QtCore/../../src/corelib/global/qflags.h:136
#6  0x00007f88a521939e in QThread::exec() (this=this@entry=0x7f88a490ada0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/include/QtCore/../../src/corelib/global/qflags.h:118
#7  0x00007f88a4888507 in QDBusConnectionManager::run() (this=0x7f88a490ada0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at /var/tmp/portage/dev-qt/qtdbus-5.14.2/work/qtbase-everywhere-src-5.14.2/src/dbus/qdbusconnection.cpp:179
#8  0x00007f88a521a3cb in QThreadPrivate::start(void*) (arg=0x7f88a490ada0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/thread/qthread_unix.cpp:342
#9  0x00007f889c8e2e97 in start_thread (arg=<optimized out>) at pthread_create.c:479
#10 0x00007f88a4e1766f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f8890afe700 (LWP 21235)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x55a2cd156b6c) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55a2cd156b18, cond=0x55a2cd156b40) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55a2cd156b40, mutex=0x55a2cd156b18) at pthread_cond_wait.c:638
#3  0x00007f88929c81ab in cnd_wait (mtx=0x55a2cd156b18, cond=0x55a2cd156b40) at ../mesa-20.0.4/include/c11/threads_posix.h:155
#4  util_queue_thread_func (input=input@entry=0x55a2cd1750c0) at ../mesa-20.0.4/src/util/u_queue.c:275
#5  0x00007f88929c7dc7 in impl_thrd_routine (p=<optimized out>) at ../mesa-20.0.4/include/c11/threads_posix.h:87
#6  0x00007f889c8e2e97 in start_thread (arg=<optimized out>) at pthread_create.c:479
#7  0x00007f88a4e1766f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f88912ff700 (LWP 21234)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x55a2cd156b6c) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55a2cd156b18, cond=0x55a2cd156b40) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55a2cd156b40, mutex=0x55a2cd156b18) at pthread_cond_wait.c:638
#3  0x00007f88929c81ab in cnd_wait (mtx=0x55a2cd156b18, cond=0x55a2cd156b40) at ../mesa-20.0.4/include/c11/threads_posix.h:155
#4  util_queue_thread_func (input=input@entry=0x55a2cd176320) at ../mesa-20.0.4/src/util/u_queue.c:275
#5  0x00007f88929c7dc7 in impl_thrd_routine (p=<optimized out>) at ../mesa-20.0.4/include/c11/threads_posix.h:87
#6  0x00007f889c8e2e97 in start_thread (arg=<optimized out>) at pthread_create.c:479
#7  0x00007f88a4e1766f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f8891b00700 (LWP 21233)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x55a2cd156b6c) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55a2cd156b18, cond=0x55a2cd156b40) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55a2cd156b40, mutex=0x55a2cd156b18) at pthread_cond_wait.c:638
#3  0x00007f88929c81ab in cnd_wait (mtx=0x55a2cd156b18, cond=0x55a2cd156b40) at ../mesa-20.0.4/include/c11/threads_posix.h:155
#4  util_queue_thread_func (input=input@entry=0x55a2cd163c60) at ../mesa-20.0.4/src/util/u_queue.c:275
#5  0x00007f88929c7dc7 in impl_thrd_routine (p=<optimized out>) at ../mesa-20.0.4/include/c11/threads_posix.h:87
#6  0x00007f889c8e2e97 in start_thread (arg=<optimized out>) at pthread_create.c:479
#7  0x00007f88a4e1766f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f8892301700 (LWP 21232)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x55a2cd156b6c) at ../sysdeps/unix/sysv/linux/futex-internal.h:80
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x55a2cd156b18, cond=0x55a2cd156b40) at pthread_cond_wait.c:508
#2  __pthread_cond_wait (cond=0x55a2cd156b40, mutex=0x55a2cd156b18) at pthread_cond_wait.c:638
#3  0x00007f88929c81ab in cnd_wait (mtx=0x55a2cd156b18, cond=0x55a2cd156b40) at ../mesa-20.0.4/include/c11/threads_posix.h:155
#4  util_queue_thread_func (input=input@entry=0x55a2cd176650) at ../mesa-20.0.4/src/util/u_queue.c:275
#5  0x00007f88929c7dc7 in impl_thrd_routine (p=<optimized out>) at ../mesa-20.0.4/include/c11/threads_posix.h:87
#6  0x00007f889c8e2e97 in start_thread (arg=<optimized out>) at pthread_create.c:479
#7  0x00007f88a4e1766f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f8894bdaa40 (LWP 21230)):
[KCrash Handler]
#7  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#8  0x00007f88a4d4155b in __GI_abort () at abort.c:79
#9  0x000055a2cba28fb0 in msgHandler(QtMsgType, QMessageLogContext const&, QString const&) (msg=..., context=..., type=<optimized out>) at /var/tmp/portage/www-client/falkon-3.1.0-r1/work/falkon-3.1.0/src/main/main.cpp:116
#10 msgHandler(QtMsgType, QMessageLogContext const&, QString const&) (type=<optimized out>, context=..., msg=...) at /var/tmp/portage/www-client/falkon-3.1.0-r1/work/falkon-3.1.0/src/main/main.cpp:99
#11 0x00007f88a5212738 in qt_message_print(QtMsgType, QMessageLogContext const&, QString const&) (msgType=QtFatalMsg, context=..., message=...) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/global/qlogging.cpp:1843
#12 0x00007f88a5212849 in qt_message(QtMsgType, const QMessageLogContext &, const char *, typedef __va_list_tag __va_list_tag *) (msgType=QtFatalMsg, context=..., msg=<optimized out>, ap=<optimized out>) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/global/qlogging.cpp:378
#13 0x00007f88a51e0cc2 in QMessageLogger::fatal(char const*, ...) const (this=this@entry=0x7ffdf80f2460, msg=msg@entry=0x7f8894606180 "The Wayland connection broke. Did the Wayland compositor die?") at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/global/qlogging.cpp:890
#14 0x00007f8894582843 in QtWaylandClient::QWaylandDisplay::checkError() const (this=<optimized out>) at /usr/include/qt5/QtCore/qlogging.h:90
#15 QtWaylandClient::QWaylandDisplay::checkError() const (this=<optimized out>) at /var/tmp/portage/dev-qt/qtwayland-5.14.2/work/qtwayland-everywhere-src-5.14.2/src/client/qwaylanddisplay.cpp:191
#16 0x00007f8894592a11 in QtWaylandClient::QWaylandDisplay::dispatchQueueWhile(wl_event_queue*, std::function<bool ()>, int) (this=0x55a2cd135550, queue=0x55a2d0c8c170, condition=..., timeout=timeout@entry=100) at /var/tmp/portage/dev-qt/qtwayland-5.14.2/work/qtwayland-everywhere-src-5.14.2/src/client/qwaylanddisplay.cpp:247
#17 0x00007f88945992e7 in QtWaylandClient::QWaylandWindow::waitForFrameSync(int) (this=0x55a2d0854970, timeout=100) at /usr/lib/gcc/x86_64-pc-linux-gnu/9.3.0/include/g++-v9/new:174
#18 0x00007f889466c4fa in QtWaylandClient::QWaylandGLContext::swapBuffers(QPlatformSurface*) (this=0x55a2d1c624b0, surface=<optimized out>) at /var/tmp/portage/dev-qt/qtwayland-5.14.2/work/qtwayland-everywhere-src-5.14.2/src/hardwareintegration/client/wayland-egl/qwaylandglcontext.cpp:482
#19 0x00007f889ca54eed in QOpenGLContext::swapBuffers(QSurface*) (this=0x55a2d118d2d0, surface=surface@entry=0x55a2d0d5e430) at /var/tmp/portage/dev-qt/qtgui-5.14.2/work/qtbase-everywhere-src-5.14.2/src/gui/kernel/qopenglcontext.cpp:1112
#20 0x00007f889ccce3c9 in QPlatformBackingStore::composeAndFlush(QWindow*, QRegion const&, QPoint const&, QPlatformTextureList*, bool) (this=this@entry=0x55a2d07ab3d0, window=0x55a2d0d5e420, region=..., offset=..., textures=textures@entry=0x55a2d124c8d0, translucentBackground=translucentBackground@entry=false) at /var/tmp/portage/dev-qt/qtgui-5.14.2/work/qtbase-everywhere-src-5.14.2/src/gui/painting/qplatformbackingstore.cpp:480
#21 0x00007f88a5808429 in QWidgetRepaintManager::flush(QWidget*, QRegion const&, QPlatformTextureList*) (widgetTextures=0x55a2d124c8d0, region=..., widget=0x55a2d0958bb0, this=<optimized out>) at /var/tmp/portage/dev-qt/qtwidgets-5.14.2/work/qtbase-everywhere-src-5.14.2/src/widgets/kernel/qwidgetrepaintmanager.cpp:1187
#22 QWidgetRepaintManager::flush(QWidget*, QRegion const&, QPlatformTextureList*) (this=<optimized out>, widget=0x55a2d0958bb0, region=..., widgetTextures=<optimized out>) at /var/tmp/portage/dev-qt/qtwidgets-5.14.2/work/qtbase-everywhere-src-5.14.2/src/widgets/kernel/qwidgetrepaintmanager.cpp:1122
#23 0x00007f88a5809465 in QWidgetRepaintManager::flush() (this=this@entry=0x55a2d07a7000) at /var/tmp/portage/dev-qt/qtwidgets-5.14.2/work/qtbase-everywhere-src-5.14.2/src/widgets/kernel/qwidgetrepaintmanager.cpp:1090
#24 0x00007f88a580b6bd in QWidgetRepaintManager::paintAndFlush() (this=<optimized out>) at /var/tmp/portage/dev-qt/qtwidgets-5.14.2/work/qtbase-everywhere-src-5.14.2/src/widgets/kernel/qwidgetrepaintmanager.cpp:1022
#25 0x00007f88a580bf86 in QWidgetRepaintManager::sync(QWidget*, QRegion const&) (this=0x55a2d07a7000, exposedWidget=0x55a2d0958bb0, exposedRegion=...) at /var/tmp/portage/dev-qt/qtwidgets-5.14.2/work/qtbase-everywhere-src-5.14.2/src/widgets/kernel/qwidgetrepaintmanager.cpp:749
#26 0x00007f88a58580f4 in QWidgetWindow::handleExposeEvent(QExposeEvent*) (this=<optimized out>, event=0x7ffdf80f3070) at /var/tmp/portage/dev-qt/qtwidgets-5.14.2/work/qtbase-everywhere-src-5.14.2/src/gui/kernel/qevent.h:468
#27 0x00007f88a5858ab8 in QWidgetWindow::event(QEvent*) (event=0x7ffdf80f3070, this=0x55a2d0d5e420) at /var/tmp/portage/dev-qt/qtwidgets-5.14.2/work/qtbase-everywhere-src-5.14.2/src/widgets/kernel/qwidgetwindow.cpp:342
#28 QWidgetWindow::event(QEvent*) (this=0x55a2d0d5e420, event=0x7ffdf80f3070) at /var/tmp/portage/dev-qt/qtwidgets-5.14.2/work/qtbase-everywhere-src-5.14.2/src/widgets/kernel/qwidgetwindow.cpp:238
#29 0x00007f88a57f8c9f in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x55a2cd12e950, receiver=receiver@entry=0x55a2d0d5e420, e=e@entry=0x7ffdf80f3070) at /var/tmp/portage/dev-qt/qtwidgets-5.14.2/work/qtbase-everywhere-src-5.14.2/src/widgets/kernel/qapplication.cpp:3685
#30 0x00007f88a5801d90 in QApplication::notify(QObject*, QEvent*) (this=0x7ffdf80f4720, receiver=0x55a2d0d5e420, e=0x7ffdf80f3070) at /var/tmp/portage/dev-qt/qtwidgets-5.14.2/work/qtbase-everywhere-src-5.14.2/src/widgets/kernel/qapplication.cpp:3431
#31 0x00007f88a53c41de in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x55a2d0d5e420, event=0x7ffdf80f3070) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/kernel/qcoreapplication.cpp:1075
#32 0x00007f889ca1d2df in QGuiApplicationPrivate::processExposeEvent(QWindowSystemInterfacePrivate::ExposeEvent*) (e=0x55a2e10dfcf0) at /var/tmp/portage/dev-qt/qtgui-5.14.2/work/qtbase-everywhere-src-5.14.2/src/gui/kernel/qguiapplication.cpp:3182
#33 0x00007f889ca1d50b in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) (e=e@entry=0x55a2e10dfcf0) at /var/tmp/portage/dev-qt/qtgui-5.14.2/work/qtbase-everywhere-src-5.14.2/src/gui/kernel/qguiapplication.cpp:2003
#34 0x00007f889c9f8a5a in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) (flags=...) at /var/tmp/portage/dev-qt/qtgui-5.14.2/work/qtbase-everywhere-src-5.14.2/src/gui/kernel/qwindowsysteminterface.cpp:1170
#35 0x00007f88945cc900 in userEventSourceDispatch(GSource*, GSourceFunc, gpointer) (source=<optimized out>) at /var/tmp/portage/dev-qt/qtgui-5.14.2/work/qtbase-everywhere-src-5.14.2/src/platformsupport/eventdispatchers/qeventdispatcher_glib.cpp:74
#36 0x00007f889c15317c in g_main_dispatch (context=0x55a2cd1b08a0) at ../glib-2.64.1/glib/gmain.c:3309
#37 g_main_context_dispatch (context=context@entry=0x55a2cd1b08a0) at ../glib-2.64.1/glib/gmain.c:3974
#38 0x00007f889c1533f8 in g_main_context_iterate (context=context@entry=0x55a2cd1b08a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib-2.64.1/glib/gmain.c:4047
#39 0x00007f889c15348f in g_main_context_iteration (context=0x55a2cd1b08a0, may_block=may_block@entry=1) at ../glib-2.64.1/glib/gmain.c:4108
#40 0x00007f88a5418290 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x55a2cd1b09d0, flags=...) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/kernel/qeventdispatcher_glib.cpp:423
#41 0x00007f88a53c308b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x55a2df587f80, flags=..., flags@entry=...) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/include/QtCore/../../src/corelib/global/qflags.h:136
#42 0x00007f88a5ff3564 in WebPage::execJavaScript(QString const&, unsigned int, int) (this=this@entry=0x55a2ed0a1f40, scriptSource=..., worldId=worldId@entry=1, timeout=timeout@entry=500) at /usr/include/qt5/QtCore/qflags.h:118
#43 0x00007f88a5fee71c in WebHitTestResult::WebHitTestResult(WebPage const*, QPoint const&) (this=0x7ffdf80f3460, page=0x55a2ed0a1f40, pos=...) at /var/tmp/portage/www-client/falkon-3.1.0-r1/work/falkon-3.1.0/src/lib/webengine/webhittestresult.cpp:92
#44 0x00007f88a5ff208a in WebPage::hitTestContent(QPoint const&) const (this=<optimized out>, pos=...) at /var/tmp/portage/www-client/falkon-3.1.0-r1/work/falkon-3.1.0/src/lib/webengine/webpage.cpp:196
#45 0x00007f88a5ffaaec in WebView::_mousePressEvent(QMouseEvent*) (this=0x7f8860993290, event=0x7ffdf80f3a10) at /usr/include/qt5/QtGui/qevent.h:121
#46 0x00007f88a6002ce6 in WebView::eventFilter(QObject*, QEvent*) (this=0x7f8860993290, obj=<optimized out>, event=0x7ffdf80f3a10) at /var/tmp/portage/www-client/falkon-3.1.0-r1/work/falkon-3.1.0/src/lib/webengine/webview.cpp:1311
#47 0x00007f88a53c402e in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) (event=<optimized out>, receiver=<optimized out>) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/kernel/qcoreapplication.cpp:1201
#48 QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) (receiver=receiver@entry=0x55a2e1109970, event=event@entry=0x7ffdf80f3a10) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/kernel/qcoreapplication.cpp:1190
#49 0x00007f88a57f8c8e in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x55a2cd12e950, receiver=receiver@entry=0x55a2e1109970, e=e@entry=0x7ffdf80f3a10) at /var/tmp/portage/dev-qt/qtwidgets-5.14.2/work/qtbase-everywhere-src-5.14.2/src/widgets/kernel/qapplication.cpp:3679
#50 0x00007f88a5801fdf in QApplication::notify(QObject*, QEvent*) (this=<optimized out>, receiver=0x55a2e1109970, e=0x7ffdf80f3a10) at /var/tmp/portage/dev-qt/qtwidgets-5.14.2/work/qtbase-everywhere-src-5.14.2/src/widgets/kernel/qapplication.cpp:3129
#51 0x00007f88a53c41de in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x55a2e1109970, event=0x7ffdf80f3a10) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/kernel/qcoreapplication.cpp:1075
#52 0x00007f88a58010a6 in QApplicationPrivate::sendMouseEvent(QWidget*, QMouseEvent*, QWidget*, QWidget*, QWidget**, QPointer<QWidget>&, bool, bool) (receiver=receiver@entry=0x55a2e1109970, event=event@entry=0x7ffdf80f3a10, alienWidget=alienWidget@entry=0x55a2e1109970, nativeWidget=0x55a2d0958bb0, buttonDown=<optimized out>, lastMouseReceiver=..., spontaneous=true, onlyDispatchEnterLeave=false) at /var/tmp/portage/dev-qt/qtwidgets-5.14.2/work/qtbase-everywhere-src-5.14.2/src/widgets/kernel/qapplication.cpp:2615
#53 0x00007f88a5855b87 in QWidgetWindow::handleMouseEvent(QMouseEvent*) (this=0x55a2d0d5e420, event=0x7ffdf80f3e80) at /usr/lib/gcc/x86_64-pc-linux-gnu/9.3.0/include/g++-v9/bits/atomic_base.h:413
#54 0x00007f88a58589d4 in QWidgetWindow::event(QEvent*) (event=0x7ffdf80f3e80, this=0x55a2d0d5e420) at /var/tmp/portage/dev-qt/qtwidgets-5.14.2/work/qtbase-everywhere-src-5.14.2/src/widgets/kernel/qwidgetwindow.cpp:295
#55 QWidgetWindow::event(QEvent*) (this=0x55a2d0d5e420, event=0x7ffdf80f3e80) at /var/tmp/portage/dev-qt/qtwidgets-5.14.2/work/qtbase-everywhere-src-5.14.2/src/widgets/kernel/qwidgetwindow.cpp:238
#56 0x00007f88a57f8c9f in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x55a2cd12e950, receiver=receiver@entry=0x55a2d0d5e420, e=e@entry=0x7ffdf80f3e80) at /var/tmp/portage/dev-qt/qtwidgets-5.14.2/work/qtbase-everywhere-src-5.14.2/src/widgets/kernel/qapplication.cpp:3685
#57 0x00007f88a5801d90 in QApplication::notify(QObject*, QEvent*) (this=0x7ffdf80f4720, receiver=0x55a2d0d5e420, e=0x7ffdf80f3e80) at /var/tmp/portage/dev-qt/qtwidgets-5.14.2/work/qtbase-everywhere-src-5.14.2/src/widgets/kernel/qapplication.cpp:3431
#58 0x00007f88a53c41de in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x55a2d0d5e420, event=0x7ffdf80f3e80) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/kernel/qcoreapplication.cpp:1075
#59 0x00007f889ca1be6b in QGuiApplicationPrivate::processMouseEvent(QWindowSystemInterfacePrivate::MouseEvent*) (e=e@entry=0x55a2e0f49dd0) at /var/tmp/portage/dev-qt/qtgui-5.14.2/work/qtbase-everywhere-src-5.14.2/src/gui/kernel/qguiapplication.cpp:2203
#60 0x00007f889ca1d605 in QGuiApplicationPrivate::processWindowSystemEvent(QWindowSystemInterfacePrivate::WindowSystemEvent*) (e=e@entry=0x55a2e0f49dd0) at /var/tmp/portage/dev-qt/qtgui-5.14.2/work/qtbase-everywhere-src-5.14.2/src/gui/kernel/qguiapplication.cpp:1935
#61 0x00007f889c9f8a5a in QWindowSystemInterface::sendWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) (flags=flags@entry=...) at /var/tmp/portage/dev-qt/qtgui-5.14.2/work/qtbase-everywhere-src-5.14.2/src/gui/kernel/qwindowsysteminterface.cpp:1170
#62 0x00007f889c9f8bc8 in QWindowSystemInterface::flushWindowSystemEvents(QFlags<QEventLoop::ProcessEventsFlag>) (flags=flags@entry=...) at /var/tmp/portage/dev-qt/qtgui-5.14.2/work/qtbase-everywhere-src-5.14.2/src/gui/kernel/qwindowsysteminterface.cpp:1134
#63 0x00007f8894599085 in QtWaylandClient::QWaylandWindow::applyConfigure() (this=0x55a2d0854970) at /usr/include/qt5/QtCore/qflags.h:118
#64 0x00007f88a53ef68c in QObject::event(QEvent*) (this=0x55a2d0854970, e=0x55a2db658160) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/kernel/qobject.cpp:1339
#65 0x00007f88a57f8c9f in QApplicationPrivate::notify_helper(QObject*, QEvent*) (this=this@entry=0x55a2cd12e950, receiver=receiver@entry=0x55a2d0854970, e=e@entry=0x55a2db658160) at /var/tmp/portage/dev-qt/qtwidgets-5.14.2/work/qtbase-everywhere-src-5.14.2/src/widgets/kernel/qapplication.cpp:3685
#66 0x00007f88a5801d90 in QApplication::notify(QObject*, QEvent*) (this=0x7ffdf80f4720, receiver=0x55a2d0854970, e=0x55a2db658160) at /var/tmp/portage/dev-qt/qtwidgets-5.14.2/work/qtbase-everywhere-src-5.14.2/src/widgets/kernel/qapplication.cpp:3431
#67 0x00007f88a53c41de in QCoreApplication::notifyInternal2(QObject*, QEvent*) (receiver=0x55a2d0854970, event=0x55a2db658160) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/kernel/qcoreapplication.cpp:1075
#68 0x00007f88a53c6c71 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) (receiver=0x0, event_type=0, data=0x55a2cd124580) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/kernel/qcoreapplication.cpp:1815
#69 0x00007f88a54184e3 in postEventSourceDispatch(GSource*, GSourceFunc, gpointer) (s=0x55a2cd122650) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/kernel/qeventdispatcher_glib.cpp:277
#70 0x00007f889c15317c in g_main_dispatch (context=0x55a2cd1b08a0) at ../glib-2.64.1/glib/gmain.c:3309
#71 g_main_context_dispatch (context=context@entry=0x55a2cd1b08a0) at ../glib-2.64.1/glib/gmain.c:3974
#72 0x00007f889c1533f8 in g_main_context_iterate (context=context@entry=0x55a2cd1b08a0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib-2.64.1/glib/gmain.c:4047
#73 0x00007f889c15348f in g_main_context_iteration (context=0x55a2cd1b08a0, may_block=may_block@entry=1) at ../glib-2.64.1/glib/gmain.c:4108
#74 0x00007f88a5418290 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) (this=0x55a2cd1b09d0, flags=...) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/kernel/qeventdispatcher_glib.cpp:423
#75 0x00007f88a53c308b in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) (this=this@entry=0x7ffdf80f4630, flags=..., flags@entry=...) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/include/QtCore/../../src/corelib/global/qflags.h:136
#76 0x00007f88a53cae32 in QCoreApplication::exec() () at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/include/QtCore/../../src/corelib/global/qflags.h:118
#77 0x000055a2cba28909 in main(int, char**) (argc=<optimized out>, argv=<optimized out>) at /var/tmp/portage/www-client/falkon-3.1.0-r1/work/falkon-3.1.0/src/main/main.cpp:155
[Inferior 1 (process 21230) detached]

Possible duplicates by query: bug 418804, bug 418803, bug 418351, bug 418277, bug 418026.

Reported using DrKonqi

Comment 1 Andreas Sturmlechner 2020-04-13 13:12:50 UTC

Created attachment 127497 [details]
New crash information added by DrKonqi

falkon (3.1.0) using Qt 5.14.2

It just happened again - while trying to switch to a different tab.

-- Backtrace (Reduced):
#7  __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:50
#8  0x00007fc2da8d655b in __GI_abort () at abort.c:79
#9  0x000056249ddf8fb0 in msgHandler(QtMsgType, QMessageLogContext const&, QString const&) (msg=..., context=..., type=<optimized out>) at /var/tmp/portage/www-client/falkon-3.1.0-r1/work/falkon-3.1.0/src/main/main.cpp:116
#10 msgHandler(QtMsgType, QMessageLogContext const&, QString const&) (type=<optimized out>, context=..., msg=...) at /var/tmp/portage/www-client/falkon-3.1.0-r1/work/falkon-3.1.0/src/main/main.cpp:99
#11 0x00007fc2dada7738 in qt_message_print(QtMsgType, QMessageLogContext const&, QString const&) (msgType=QtFatalMsg, context=..., message=...) at /var/tmp/portage/dev-qt/qtcore-5.14.2/work/qtbase-everywhere-src-5.14.2/src/corelib/global/qlogging.cpp:1843

Comment 2 Nate Graham 2021-01-13 18:44:52 UTC

#6  QMessageLogger::fatal (this=this@entry=0x7fffd70c5ba0, msg=msg@entry=0x7ff994ac00b8 "The Wayland connection broke. Did the Wayland compositor die?") at global/qlogging.cpp:893

This means that the compositor crashed. Due to a Qt issue, when this happens, the app using it will crash too. KDE developers submitted a fix, but sadly it was not merged. See https://codereview.qt-project.org/c/qt/qtwayland/+/308984.

Until we get better handling of this in Qt, the best we can do is debug why the compositor crashed in the first place. So can you please get a backtrace of the crash in kwin_wayland and then file a new bug report with it on kwin | wayland-generic? Thanks!

You may be able to use the `coredumpctl` utility to retrieve the backtrace. See https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports#Retrieving_a_backtrace_using_coredumpctl