https://bugs.kde.org/show_bug.cgi?id=383417

            Bug ID: 383417
           Summary: konqueror5 crash when testing the kio_perldoc slave
           Product: konqueror
           Version: 5.0.97
          Platform: Compiled Sources
                OS: Linux
            Status: UNCONFIRMED
          Keywords: drkonqi
          Severity: crash
          Priority: NOR
         Component: general
          Assignee: konq-b...@kde.org
          Reporter: rjvber...@gmail.com
  Target Milestone: ---

Application: konqueror (5.0.97)
 (Compiled from sources)
Qt Version: 5.8.0
Frameworks Version: 5.35.0
Operating System: Linux 4.9.30-ck1-mainline-core2-rjvb x86_64
Distribution: Ubuntu 14.04.5 LTS

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

I tested the kio_perldoc slave I just installed by opening
perldoc:/functions/print in konqueror. This crash ensued - a freak event?

My terminal was filled with "[warn] epoll_wait: Bad file descriptor" messages
probably coming from QWE so I don't know if anything useful was printed before
the crash.

-- Backtrace:
Application: Konqueror (konqueror), signal: Aborted
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
[Current thread is 1 (Thread 0x7f500a573800 (LWP 17549))]

Thread 20 (Thread 0x7f4ff3028700 (LWP 17550)):
#0  0x00007f5009de9c5d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f4fff1a9b72 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f4fff1ab64f in xcb_wait_for_event () from
/usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f4ff568d549 in QXcbEventReader::run (this=0x18741e0) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/plugins/platforms/xcb/qxcbconnection.cpp:1345
#4  0x00007f50044efcf9 in QThreadPrivate::start (arg=0x18741e0) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/corelib/thread/qthread_unix.cpp:368
#5  0x00007f4fff823184 in start_thread (arg=0x7f4ff3028700) at
pthread_create.c:312
#6  0x00007f5009df6ffd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 19 (Thread 0x7f4fe60e8700 (LWP 17551)):
#0  QThreadData::current (createIfNecessary=createIfNecessary@entry=true) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/corelib/thread/qthread_unix.cpp:263
#1  0x00007f500470ce61 in postEventSourcePrepare (timeout=0x0,
s=0x7f4fe00012d0) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:252
#2  postEventSourceCheck (source=source@entry=0x7f4fe00012d0) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:269
#3  0x00007f4ffd810c62 in g_main_context_check
(context=context@entry=0x7f4fe0000990, max_priority=2147483647,
fds=fds@entry=0x7f4fe0003020, n_fds=n_fds@entry=1) at gmain.c:3750
#4  0x00007f4ffd81128c in g_main_context_iterate
(context=context@entry=0x7f4fe0000990, block=block@entry=1,
dispatch=dispatch@entry=1, self=<optimized out>) at gmain.c:3914
#5  0x00007f4ffd8113ec in g_main_context_iteration (context=0x7f4fe0000990,
may_block=may_block@entry=1) at gmain.c:3978
#6  0x00007f500470d59b in QEventDispatcherGlib::processEvents
(this=0x7f4fe00008c0, flags=...) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/corelib/kernel/qeventdispatcher_glib.cpp:425
#7  0x00007f50046b917a in QEventLoop::exec (this=this@entry=0x7f4fe60e7da0,
flags=..., flags@entry=...) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/corelib/kernel/qeventloop.cpp:212
#8  0x00007f50044eb2ab in QThread::exec (this=this@entry=0x7f5006684460
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/corelib/thread/qthread.cpp:507
#9  0x00007f5006414005 in QDBusConnectionManager::run (this=0x7f5006684460
<(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/dbus/qdbusconnection.cpp:170
#10 0x00007f50044efcf9 in QThreadPrivate::start (arg=0x7f5006684460 <(anonymous
namespace)::Q_QGS__q_manager::innerFunction()::holder>) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/corelib/thread/qthread_unix.cpp:368
#11 0x00007f4fff823184 in start_thread (arg=0x7f4fe60e8700) at
pthread_create.c:312
#12 0x00007f5009df6ffd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 18 (Thread 0x7f4fbe65c700 (LWP 17570)):
#0  __lll_lock_wait_private () at
../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f5009e061bd in _L_lock_58 () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f5009e060bf in ___fprintf_chk (fp=0x7f500a0bd9d0
<_IO_stdfile_2_lock>, flag=1, format=0x7f4fd97d0906 "[%s] %s\n") at
fprintf_chk.c:30
#3  0x00007f4fd8b367f5 in _warn_helper () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#4  0xff76af978df5dee7 in ?? ()
#5  0x61775f6c6c6f7065 in ?? ()
#6  0x20646142203a7469 in ?? ()
#7  0x73656420656c6966 in ?? ()
#8  0x00726f7470697263 in ?? ()
#9  0x00007f4fb4004be0 in ?? ()
#10 0x00007f4fd9b372e0 in ?? () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#11 0x00007f4fd71db9c4 in operator new(unsigned long, std::nothrow_t const&) ()
from /opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#12 0x00007f4fb4004be0 in ?? ()
#13 0x00007f4fac001690 in ?? ()
#14 0x0000000000000003 in ?? ()
#15 0x00007f4fd7958313 in base::SampleVector::SampleVector(unsigned long,
base::BucketRanges const*) () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#16 0x00007f4fbe65b868 in ?? ()
#17 0x000000017fffffff in ?? ()
#18 0x0000000000000003 in ?? ()
#19 0x00007f4fb4003540 in ?? ()
#20 0x00007f4fbe65b850 in ?? ()
#21 0x0000000000000010 in ?? ()
#22 0xffff80b0419a47c1 in ?? ()
#23 0x0000000000000002 in ?? ()
#24 0x0000000000000000 in ?? ()

Thread 17 (Thread 0x7f4fbde5b700 (LWP 17571)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f4fd796812a in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () from /opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#2  0x00007f4fbde5ad01 in ?? ()
#3  0x00007f4fb4002e70 in ?? ()
#4  0x00007f4fd9b97740 in vtable for base::SyncWaiter () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#5  0x00007f4fd7950f00 in
base::MessageLoop::ProcessNextDelayedNonNestableTask() () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#6  0x0000000000000000 in ?? ()

Thread 16 (Thread 0x7f4fbd65a700 (LWP 17572)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007f4fd7967cf3 in base::ConditionVariable::TimedWait(base::TimeDelta
const&) () from /opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#2  0x0000000034d72937 in ?? ()
#3  0x000000000007cbe8 in ?? ()
#4  0x0000000034d72937 in ?? ()
#5  0x000000000007cbe8 in ?? ()
#6  0x00007f4fb4003ea0 in ?? ()
#7  0x00007f4fbd659ca0 in ?? ()
#8  0x00007f4fd7970e13 in base::PosixDynamicThreadPool::WaitForTask() () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#9  0x1e7485b600000000 in ?? ()
#10 0x00007f4fbd659d90 in ?? ()
#11 0x0000000023c34600 in ?? ()
#12 0x00007f4fbd659ce8 in ?? ()
#13 0x00007f4fac0011f0 in ?? ()
#14 0x00007f4f90078ce0 in ?? ()
#15 0x00007f4fbd659d78 in ?? ()
#16 0x00007f4fd7973d18 in
tracked_objects::ThreadData::TallyRunOnWorkerThreadIfTracking(tracked_objects::Births
const*, tracked_objects::TrackedTime const&, tracked_objects::TaskStopwatch
const&) () from /opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#17 0x00007f4fb4002cf0 in ?? ()
#18 0x00007f4fbd659db0 in ?? ()
#19 0x00007f4fd92ee340 in ?? () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#20 0x00007f4fb4002cf0 in ?? ()
#21 0x00007f4fbd659db0 in ?? ()
#22 0x00007f4fbd659d90 in ?? ()
#23 0x00007f4fd92ee340 in ?? () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#24 0x00007f4fb4002cf0 in ?? ()
#25 0x00007f4fbd659db0 in ?? ()
#26 0x00007f4fd7971009 in base::(anonymous
namespace)::WorkerThread::ThreadMain() () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#27 0x0000000000000000 in ?? ()

Thread 15 (Thread 0x7f4fbce59700 (LWP 17573)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007f4fd7967cf3 in base::ConditionVariable::TimedWait(base::TimeDelta
const&) () from /opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#2  0x0000000026a51731 in ?? ()
#3  0x000000000007cbe8 in ?? ()
#4  0x0000000026a51731 in ?? ()
#5  0x000000000007cbe8 in ?? ()
#6  0x00007f4fb4003ea0 in ?? ()
#7  0x00007f4fbce58ca0 in ?? ()
#8  0x00007f4fd7970e13 in base::PosixDynamicThreadPool::WaitForTask() () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#9  0x1e7484c800000000 in ?? ()
#10 0x00007f4fbce58d90 in ?? ()
#11 0x0000000023c34600 in ?? ()
#12 0x00007f4fbce58ce8 in ?? ()
#13 0x00007f4fa00011f0 in ?? ()
#14 0x00007f4fb4003ca0 in ?? ()
#15 0x00007f4fbce58d78 in ?? ()
#16 0x00007f4fd7973d18 in
tracked_objects::ThreadData::TallyRunOnWorkerThreadIfTracking(tracked_objects::Births
const*, tracked_objects::TrackedTime const&, tracked_objects::TaskStopwatch
const&) () from /opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#17 0x00007f4fa0001cd0 in ?? ()
#18 0x00007f4fbce58db0 in ?? ()
#19 0x00007f4fd92fdcd1 in ?? () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#20 0x00007f4fb40023c0 in ?? ()
#21 0x00007f4fbce58db0 in ?? ()
#22 0x00007f4fbce58d90 in ?? ()
#23 0x00007f4fd92fdcd1 in ?? () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#24 0x00007f4fb40023c0 in ?? ()
#25 0x00007f4fbce58db0 in ?? ()
#26 0x00007f4fd7971009 in base::(anonymous
namespace)::WorkerThread::ThreadMain() () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#27 0x0000000000000000 in ?? ()

Thread 14 (Thread 0x7f4fa7fff700 (LWP 17574)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f4fd796812a in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () from /opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#2  0x0000000000000000 in ?? ()

Thread 13 (Thread 0x7f4fa77fe700 (LWP 17575)):
#0  0x00007f5009de83ad in write () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f5009d71f13 in _IO_new_file_write (f=0x7f500a0bc1c0
<_IO_2_1_stderr_>, data=0x7f4fa77facc0, n=39) at fileops.c:1261
#2  0x00007f5009d726af in new_do_write (to_do=39, data=0x7f4fa77facc0 "[warn]
epoll_wait: Bad file descriptor\n", fp=0x7f500a0bc1c0 <_IO_2_1_stderr_>) at
fileops.c:538
#3  _IO_new_file_xsputn (f=0x7f500a0bc1c0 <_IO_2_1_stderr_>, data=<optimized
out>, n=39) at fileops.c:1343
#4  0x00007f5009d47f0d in buffered_vfprintf (s=s@entry=0x7f500a0bc1c0
<_IO_2_1_stderr_>, format=format@entry=0x7f4fd97d0906 "[%s] %s\n",
args=args@entry=0x7f4fa77fd2e8) at vfprintf.c:2377
#5  0x00007f5009d42dfe in _IO_vfprintf_internal (s=s@entry=0x7f500a0bc1c0
<_IO_2_1_stderr_>, format=0x7f4fd97d0906 "[%s] %s\n",
ap=ap@entry=0x7f4fa77fd2e8) at vfprintf.c:1313
#6  0x00007f5009e06115 in ___fprintf_chk (fp=0x7f500a0bc1c0 <_IO_2_1_stderr_>,
flag=1, format=<optimized out>) at fprintf_chk.c:35
#7  0x00007f4fd8b367f5 in _warn_helper () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#8  0xffff80b058802bb1 in ?? ()
#9  0x61775f6c6c6f7065 in ?? ()
#10 0x20646142203a7469 in ?? ()
#11 0x73656420656c6966 in ?? ()
#12 0x00726f7470697263 in ?? ()
#13 0x0000000000000000 in ?? ()

Thread 12 (Thread 0x7f4fa6ffd700 (LWP 17576)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f4fd796812a in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () from /opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#2  0x00007f4fa6ffc901 in ?? ()
#3  0x0000000004138420 in ?? ()
#4  0x00007f4fd9b97740 in vtable for base::SyncWaiter () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#5  0x00007f4fd7950f00 in
base::MessageLoop::ProcessNextDelayedNonNestableTask() () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#6  0x0000000000000000 in ?? ()

Thread 11 (Thread 0x7f4fa67fc700 (LWP 17577)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f4fd796812a in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () from /opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#2  0x00007f4fa67fb901 in ?? ()
#3  0x0000000004138e00 in ?? ()
#4  0x00007f4fd9b97740 in vtable for base::SyncWaiter () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#5  0x00007f4fd7950f00 in
base::MessageLoop::ProcessNextDelayedNonNestableTask() () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#6  0x0000000000000000 in ?? ()

Thread 10 (Thread 0x7f4fa5ffb700 (LWP 17578)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007f4fd7967cf3 in base::ConditionVariable::TimedWait(base::TimeDelta
const&) () from /opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#2  0x000000000a96fc6d in ?? ()
#3  0x000000000007cc43 in ?? ()
#4  0x000000000a97a465 in ?? ()
#5  0x000000000007cc43 in ?? ()
#6  0x00007f4fa5ffa920 in ?? ()
#7  0x00007f4f8c0012d0 in ?? ()
#8  0x00007f4fd796811f in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () from /opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#9  0x00007f4f8c0012d8 in ?? ()
#10 0x0000000001c9c355 in ?? ()
#11 0x00007f4fd9b97740 in vtable for base::SyncWaiter () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#12 0x00007f5009e05400 in __get_clockfreq () at
../sysdeps/unix/sysv/linux/x86_64/../i386/get_clockfreq.c:70
#13 0x0000000000000000 in ?? ()

Thread 9 (Thread 0x7f4fa57fa700 (LWP 17579)):
#0  0x00007f5009df7693 in epoll_wait () at
../sysdeps/unix/syscall-template.S:81
#1  0x00007f4fd8b37a55 in epoll_dispatch () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#2  0x00007f4fa57f9940 in ?? ()
#3  0x0000000000000002 in ?? ()
#4  0x00007f4fa57f9950 in ?? ()
#5  0x00007f4fa57f9940 in ?? ()
#6  0x00007f4fa57fa901 in ?? ()
#7  0x00007f4fd8b36448 in event_base_loop () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#8  0x00007f4f900018f8 in ?? ()
#9  0x00007f4fd9c17760 in ?? () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#10 0x00007f4f90001920 in ?? ()
#11 0x00000001900012f0 in ?? ()
#12 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7f4fa4ff9700 (LWP 17580)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f4fd796812a in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () from /opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#2  0xffff80b05b007331 in ?? ()
#3  0x0000000000000005 in ?? ()
#4  0x00007f4fd9b97740 in vtable for base::SyncWaiter () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#5  0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7f4f83fff700 (LWP 17581)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f4fd8a9da9d in cc::SingleThreadTaskGraphRunner::Run() () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#2  0x000000000413ea58 in ?? ()
#3  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7f4f837fe700 (LWP 17582)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:238
#1  0x00007f4fd7967cf3 in base::ConditionVariable::TimedWait(base::TimeDelta
const&) () from /opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#2  0x00000000288c4cdf in ?? ()
#3  0x000000000007cc3c in ?? ()
#4  0x00000000288c7fa7 in ?? ()
#5  0x000000000007cc3c in ?? ()
#6  0x00007f4f837fdc80 in ?? ()
#7  0x00007f4f740012c0 in ?? ()
#8  0x00007f4fd796811f in base::WaitableEvent::TimedWait(base::TimeDelta
const&) () from /opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#9  0x00007f4f740012c8 in ?? ()
#10 0x0000000000b71af3 in ?? ()
#11 0x00007f4fd9b97740 in vtable for base::SyncWaiter () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#12 0x00007f5009e05400 in __get_clockfreq () at
../sysdeps/unix/sysv/linux/x86_64/../i386/get_clockfreq.c:70
#13 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7f4f82ffd700 (LWP 17583)):
#0  0x00007f5009de9c5d in poll () at ../sysdeps/unix/syscall-template.S:81
#1  0x00007f4ff8199231 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#2  0x00007f4ff818ae61 in pa_mainloop_poll () from
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#3  0x00007f4ff818b49e in pa_mainloop_iterate () from
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#4  0x00007f4ff818b550 in pa_mainloop_run () from
/usr/lib/x86_64-linux-gnu/libpulse.so.0
#5  0x00007f4ff8199196 in ?? () from /usr/lib/x86_64-linux-gnu/libpulse.so.0
#6  0x00007f4ff74efcd8 in ?? () from
/usr/lib/x86_64-linux-gnu/pulseaudio/libpulsecommon-8.0.so
#7  0x00007f4fff823184 in start_thread (arg=0x7f4f82ffd700) at
pthread_create.c:312
#8  0x00007f5009df6ffd in clone () at
../sysdeps/unix/sysv/linux/x86_64/clone.S:111

Thread 4 (Thread 0x7f4f827fc700 (LWP 17584)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f4fff1aa7bb in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#2  0x00007f4fff1ab5a3 in xcb_request_check () from
/usr/lib/x86_64-linux-gnu/libxcb.so.1
#3  0x00007f4ffed4d9e2 in ?? () from /usr/lib/x86_64-linux-gnu/mesa/libGL.so.1
#4  0x00007f4fd71b55ad in gl::GLContextGLX::Initialize(gl::GLSurface*,
gl::GpuPreference) () from /opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#5  0x00000000018a6400 in ?? ()
#6  0x00007f4f6d559b40 in ?? ()
#7  0x0000005b00000054 in ?? ()
#8  0x00007f4f6d559b40 in ?? ()
#9  0x00007f4f6d559b44 in ?? ()
#10 0x00007f4f6d559b44 in ?? ()
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f4f81ffb700 (LWP 17585)):
#0  __lll_lock_wait_private () at
../nptl/sysdeps/unix/sysv/linux/x86_64/lowlevellock.S:95
#1  0x00007f5009e061bd in _L_lock_58 () from /lib/x86_64-linux-gnu/libc.so.6
#2  0x00007f5009e060bf in ___fprintf_chk (fp=0x7f500a0bd9d0
<_IO_stdfile_2_lock>, flag=1, format=0x7f4fd97d0906 "[%s] %s\n") at
fprintf_chk.c:30
#3  0x00007f4fd8b367f5 in _warn_helper () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#4  0x00007f4f81ffa830 in ?? ()
#5  0x61775f6c6c6f7065 in ?? ()
#6  0x20646142203a7469 in ?? ()
#7  0x73656420656c6966 in ?? ()
#8  0x00726f7470697263 in ?? ()
#9  0x00007f4f81ffa7a0 in ?? ()
#10 0x00007f4f900053f0 in ?? ()
#11 0x00007f4f81ffa840 in ?? ()
#12 0x00007f4f6c00da10 in ?? ()
#13 0x00007f4fd795b30f in base::PendingTask::~PendingTask() () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#14 0x00007f4f81ffa7a0 in ?? ()
#15 0x00007f4fd7989f64 in
base::internal::IncomingTaskQueue::AddToIncomingQueue(tracked_objects::Location
const&, base::Callback<void (), (base::internal::CopyMode)1> const&,
base::TimeDelta, bool) () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#16 0x00007f0181ffa7f0 in ?? ()
#17 0x00007f4f70001f10 in ?? ()
#18 0x00007f4f70003740 in ?? ()
#19 0x00007f4f1e7486fc in ?? ()
#20 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f4f817fa700 (LWP 17586)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at
../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
#1  0x00007f4fd796e2e6 in
base::SequencedWorkerPool::Inner::ThreadLoop(base::SequencedWorkerPool::Worker*)
() from /opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#2  0x00007f4f817f9c40 in ?? ()
#3  0x00007f4f817f9ba0 in ?? ()
#4  0x00000000040e5e08 in ?? ()
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f500a573800 (LWP 17549)):
[KCrash Handler]
#6  0x00007f5009d2fc37 in __GI_raise (sig=sig@entry=6) at
../nptl/sysdeps/unix/sysv/linux/raise.c:56
#7  0x00007f5009d33028 in __GI_abort () at abort.c:89
#8  0x00007f5009d28bf6 in __assert_fail_base (fmt=0x7f5009e7d018 "%s%s%s:%u:
%s%sAssertion `%s' failed.\n%n", assertion=assertion@entry=0x7f4fff1b5615
"!c->out.queue_len", file=file@entry=0x7f4fff1b5600 "../../src/xcb_conn.c",
line=line@entry=186, function=function@entry=0x7f4fff1b5630 "write_vec") at
assert.c:92
#9  0x00007f5009d28ca2 in __GI___assert_fail (assertion=0x7f4fff1b5615
"!c->out.queue_len", file=0x7f4fff1b5600 "../../src/xcb_conn.c", line=186,
function=0x7f4fff1b5630 "write_vec") at assert.c:101
#10 0x00007f4fff1a9e5b in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#11 0x00007f4fff1aa191 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#12 0x00007f4fff1aa8a7 in ?? () from /usr/lib/x86_64-linux-gnu/libxcb.so.1
#13 0x00007f4fff1aa9c8 in xcb_take_socket () from
/usr/lib/x86_64-linux-gnu/libxcb.so.1
#14 0x00007f5001990a38 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#15 0x00007f5001991259 in _XFlush () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#16 0x00007f5001993c75 in _XGetRequest () from
/usr/lib/x86_64-linux-gnu/libX11.so.6
#17 0x00007f500198d0bb in XSync () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#18 0x00007f4ffed7321b in ?? () from /usr/lib/x86_64-linux-gnu/mesa/libGL.so.1
#19 0x00007f4ff220d6a2 in QGLXContext::swapBuffers (this=0x41edee0,
surface=0x1e93910) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/plugins/platforms/xcb/gl_integrations/xcb_glx/qglxintegration.cpp:541
#20 0x00007f50050ec1ad in QOpenGLContext::swapBuffers
(this=this@entry=0x4189410, surface=surface@entry=0x1f5dd90) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/gui/kernel/qopenglcontext.cpp:1073
#21 0x00007f5005378da0 in QPlatformBackingStore::composeAndFlush
(this=this@entry=0x1f689a0, window=window@entry=0x1f5dd80, region=...,
offset=..., textures=<optimized out>, context=<optimized out>,
translucentBackground=<optimized out>) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/gui/painting/qplatformbackingstore.cpp:415
#22 0x00007f4ff56abd07 in QXcbBackingStore::composeAndFlush (this=0x1f689a0,
window=0x1f5dd80, region=..., offset=..., textures=<optimized out>,
context=<optimized out>, translucentBackground=false) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/plugins/platforms/xcb/qxcbbackingstore.cpp:618
#23 0x00007f5005ac7257 in QWidgetBackingStore::qt_flush (widget=0x1be5c30,
region=..., backingStore=<optimized out>, tlw=<optimized out>, tlwOffset=...,
widgetTextures=<optimized out>, widgetBackingStore=<optimized out>) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/widgets/kernel/qwidgetbackingstore.cpp:146
#24 0x00007f5005ac86fe in QWidgetBackingStore::flush
(this=this@entry=0x1e93b30, widget=widget@entry=0x0) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/widgets/kernel/qwidgetbackingstore.cpp:1408
#25 0x00007f5005aca476 in endPaint (beginPaintInfo=<synthetic pointer>,
backingStore=<optimized out>, cleaned=..., this=0x1e93b30) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/widgets/kernel/qwidgetbackingstore.cpp:367
#26 QWidgetBackingStore::doSync (this=this@entry=0x1e93b30) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/widgets/kernel/qwidgetbackingstore.cpp:1392
#27 0x00007f5005aca5fa in QWidgetBackingStore::sync (this=0x1e93b30) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/widgets/kernel/qwidgetbackingstore.cpp:1170
#28 0x00007f5005ae88df in QWidgetPrivate::syncBackingStore (this=0x1be5f60) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/widgets/kernel/qwidget.cpp:1962
#29 0x00007f5005aff168 in QWidget::event (this=this@entry=0x1be5c30,
event=event@entry=0x7ffc1d551490) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/widgets/kernel/qwidget.cpp:9095
#30 0x00007f5005bf56db in QMainWindow::event (this=this@entry=0x1be5c30,
event=event@entry=0x7ffc1d551490) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/widgets/widgets/qmainwindow.cpp:1557
#31 0x00007f5007f6143b in KMainWindow::event (this=this@entry=0x1be5c30,
ev=ev@entry=0x7ffc1d551490) at
/opt/local/var/lnxports/build/_opt_local_site-ports_kf5_KF5-Frameworks/kf5-kxmlgui/work/kxmlgui-5.35.0/src/kmainwindow.cpp:867
#32 0x00007f5007fb3fb5 in KXmlGuiWindow::event (this=0x1be5c30,
ev=0x7ffc1d551490) at
/opt/local/var/lnxports/build/_opt_local_site-ports_kf5_KF5-Frameworks/kf5-kxmlgui/work/kxmlgui-5.35.0/src/kxmlguiwindow.cpp:119
#33 0x00007f500a15c20e in KonqMainWindow::event (this=0x1be5c30,
e=0x7ffc1d551490) at
/opt/local/var/lnxports/build/_opt_local_site-ports_kf5_kf5-baseapps/kf5-konqueror/work/konqueror-17.04.2/src/konqmainwindow.cpp:5496
#34 0x00007f5005aba8ac in QApplicationPrivate::notify_helper (this=<optimized
out>, receiver=0x1be5c30, e=0x7ffc1d551490) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/widgets/kernel/qapplication.cpp:3745
#35 0x00007f5005ac1b21 in QApplication::notify (this=0x7ffc1d552770,
receiver=0x1be5c30, e=0x7ffc1d551490) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/widgets/kernel/qapplication.cpp:3502
#36 0x00007f50046bb018 in QCoreApplication::notifyInternal2
(receiver=receiver@entry=0x1be5c30, event=event@entry=0x7ffc1d551490) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/corelib/kernel/qcoreapplication.cpp:995
#37 0x00007f5005acad6d in sendEvent (event=0x7ffc1d551490, receiver=0x1be5c30)
at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/include/QtCore/../../src/corelib/kernel/qcoreapplication.h:231
#38 QWidgetBackingStore::sendUpdateRequest (this=this@entry=0x1e93b30,
widget=0x1be5c30, updateTime=updateTime@entry=QWidgetBackingStore::UpdateNow)
at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/widgets/kernel/qwidgetbackingstore.cpp:508
#39 0x00007f5005acba6e in QWidgetBackingStore::markDirty (this=0x1e93b30,
rect=..., widget=widget@entry=0x1e40c70,
updateTime=updateTime@entry=QWidgetBackingStore::UpdateNow,
bufferState=bufferState@entry=QWidgetBackingStore::BufferValid) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/widgets/kernel/qwidgetbackingstore.cpp:682
#40 0x00007f5005aeaea8 in QWidget::repaint (this=0x1e40c70, rect=...) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/widgets/kernel/qwidget.cpp:10880
#41 0x00007f5005aeaf03 in QWidget::repaint (this=this@entry=0x1e40c70) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/widgets/kernel/qwidget.cpp:10836
#42 0x00007f5005c2cdd8 in QProgressBar::setValue (this=0x1e40c70,
value=<optimized out>) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/widgets/widgets/qprogressbar.cpp:332
#43 0x00007f500a1ab953 in KonqFrameStatusBar::qt_static_metacall (_o=<optimized
out>, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at
/opt/local/var/lnxports/build/_opt_local_site-ports_kf5_kf5-baseapps/kf5-konqueror/work/build/src/kdeinit_konqueror_autogen/EWIEGA46WW/moc_konqframestatusbar.cpp:113
#44 0x00007f50046e5fb9 in QMetaObject::activate (sender=0x40ed020,
signalOffset=<optimized out>, local_signal_index=local_signal_index@entry=14,
argv=argv@entry=0x7ffc1d5517b0) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/corelib/kernel/qobject.cpp:3740
#45 0x00007f50046e68c7 in QMetaObject::activate (sender=<optimized out>,
m=m@entry=0x7f5009207900 <KParts::BrowserExtension::staticMetaObject>,
local_signal_index=local_signal_index@entry=14, argv=argv@entry=0x7ffc1d5517b0)
at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/corelib/kernel/qobject.cpp:3602
#46 0x00007f5008ff1d41 in KParts::BrowserExtension::loadingProgress
(this=<optimized out>, _t1=<optimized out>) at
/opt/local/var/lnxports/build/_opt_local_site-ports_kf5_KF5-Frameworks/kf5-kparts/work/build/src/KF5Parts_autogen/EWIEGA46WW/moc_browserextension.cpp:613
#47 0x00007f5008ff309b in KParts::BrowserExtension::qt_static_metacall
(_o=0x40ed020, _c=<optimized out>, _id=<optimized out>, _a=<optimized out>) at
/opt/local/var/lnxports/build/_opt_local_site-ports_kf5_KF5-Frameworks/kf5-kparts/work/build/src/KF5Parts_autogen/EWIEGA46WW/moc_browserextension.cpp:263
#48 0x00007f50046e5fb9 in QMetaObject::activate (sender=0x1fb3d20,
signalOffset=<optimized out>, local_signal_index=<optimized out>,
argv=<optimized out>) at
/opt/local/var/lnxports/build/_opt_local_site-ports_aqua_qt5-kde-devel/qt5-kde-devel/work/qt-everywhere-opensource-src-5.8.0/qtbase/src/corelib/kernel/qobject.cpp:3740
#49 0x00007f4fd66323e3 in QWebEnginePage::loadProgress(int) () from
/opt/local/libexec/qt5/lib/libQt5WebEngineWidgets.so.5
#50 0x00007f4fd6f4729b in
QtWebEngineCore::WebContentsDelegateQt::DidFailLoad(content::RenderFrameHost*,
GURL const&, int, std::basic_string<unsigned short, base::string16_char_traits,
std::allocator<unsigned short> > const&, bool) () from
/opt/local/libexec/qt5/lib/libQt5WebEngineCore.so.5
#51 0x0000000000000000 in ?? ()

Possible duplicates by query: bug 382799, bug 371026, bug 370956, bug 367890.

Reported using DrKonqi

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