Attachment 125493 Details for Bug 91632 – backtrace with symbol tables

backtrace with symbol tables

backtrace.log (text/plain), 147.00 KB, created by Andrés Becerra Sandoval on 2016-08-02 20:17:56 UTC

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Creator: Andrés Becerra Sandoval

Created: 2016-08-02 20:17:56 UTC

Size: 147.00 KB

patch

obsolete

>Starting program: /usr/bin/qupzilla --no-extensions 
>[Thread debugging using libthread_db enabled]
>Using host libthread_db library "/lib64/libthread_db.so.1".
>[New Thread 0x7fffedf7b700 (LWP 7062)]
>[New Thread 0x7fffe6b4d700 (LWP 7071)]
>[New Thread 0x7fffdf8d0700 (LWP 7072)]
>[New Thread 0x7fffdf0cf700 (LWP 7074)]
>[New Thread 0x7fffde8ce700 (LWP 7075)]
>[New Thread 0x7fffde0cd700 (LWP 7076)]
>[New Thread 0x7fffdd8cc700 (LWP 7077)]
>[New Thread 0x7fffdd0cb700 (LWP 7078)]
>[New Thread 0x7fffdc8ca700 (LWP 7079)]
>[New Thread 0x7fffbffff700 (LWP 7080)]
>[New Thread 0x7fffbf7fe700 (LWP 7081)]
>[New Thread 0x7fffbeffd700 (LWP 7082)]
>[New Thread 0x7fffbe7fc700 (LWP 7083)]
>[New Thread 0x7fffbdffb700 (LWP 7084)]
>[New Thread 0x7fffbd7fa700 (LWP 7085)]
>[New Thread 0x7fffbcff9700 (LWP 7086)]
>[New Thread 0x7fffa7fff700 (LWP 7087)]
>[New Thread 0x7fffa77fe700 (LWP 7088)]
>[New Thread 0x7fffa6ffd700 (LWP 7089)]
>[New Thread 0x7fffa67fc700 (LWP 7090)]
>[New Thread 0x7fffa5ffb700 (LWP 7091)]
>[New Thread 0x7fffa57fa700 (LWP 7098)]
>[New Thread 0x7fff835ff700 (LWP 7099)]
>[New Thread 0x7fff82dfe700 (LWP 7100)]
>[New Thread 0x7fff81e4b700 (LWP 7104)]
>[Thread 0x7fff81e4b700 (LWP 7104) exited]
>
>Thread 1 "qupzilla" received signal SIGABRT, Aborted.
>0x00007ffff1372118 in __GI_raise (sig=sig@entry=6) at ../sysdeps/unix/sysv/linux/raise.c:54
>54	../sysdeps/unix/sysv/linux/raise.c: No existe el fichero o el directorio.
>
>Thread 25 (Thread 0x7fff82dfe700 (LWP 7100)):
>#0  pthread_cond_timedwait ()
>    at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
>No locals.
>#1  0x00007ffff1f101b8 in QWaitConditionPrivate::wait_relative (time=30000, 
>    this=0x7fff7c0046a0) at thread/qwaitcondition_unix.cpp:126
>        ti = {tv_sec = 1904, tv_nsec = 945224578}
>#2  QWaitConditionPrivate::wait (time=30000, this=0x7fff7c0046a0)
>    at thread/qwaitcondition_unix.cpp:134
>        code = <optimized out>
>#3  QWaitCondition::wait (this=this@entry=0x7fff7c0043c0, mutex=mutex@entry=0x7fff7c004140, 
>    time=30000) at thread/qwaitcondition_unix.cpp:208
>No locals.
>#4  0x00007ffff1f0cc52 in QThreadPoolThread::run (this=0x7fff7c0043b0)
>    at thread/qthreadpool.cpp:127
>        r = <optimized out>
>        expired = <optimized out>
>        locker = {val = 140735273779521}
>#5  0x00007ffff1f0fb8c in QThreadPrivate::start (arg=0x7fff7c0043b0)
>    at thread/qthread_unix.cpp:341
>        __clframe = {__cancel_routine = 0x7ffff1f0ed40 <QThreadPrivate::finish(void*)>, 
>          __cancel_arg = 0x7fff7c0043b0, __do_it = 1, __cancel_type = <optimized out>}
>        thr = 0x7fff7c0043b0
>        data = 0x7fff7c004620
>#6  0x00007ffff19e23a4 in start_thread (arg=0x7fff82dfe700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fff82dfe700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140735389099776, 3652746970045586707, 0, 
>                140735397487279, 140735389099776, 140735397487504, -3652929764891321069, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#7  0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 24 (Thread 0x7fff835ff700 (LWP 7099)):
>#0  0x00007ffff141da3d in poll () at ../sysdeps/unix/syscall-template.S:84
>No locals.
>#1  0x00007ffff0a32f2c in g_main_context_poll (priority=2147483647, n_fds=1, 
>    fds=0x7fff7c003070, timeout=<optimized out>, context=0x7fff7c000990)
>    at /var/tmp/portage/dev-libs/glib-2.48.1-r1/work/glib-2.48.1/glib/gmain.c:4135
>        poll_func = 0x7ffff0a41e30 <g_poll>
>#2  g_main_context_iterate (context=context@entry=0x7fff7c000990, block=block@entry=1, 
>    dispatch=dispatch@entry=1, self=<optimized out>)
>    at /var/tmp/portage/dev-libs/glib-2.48.1-r1/work/glib-2.48.1/glib/gmain.c:3835
>        max_priority = 2147483647
>        timeout = 134565
>        some_ready = <optimized out>
>        nfds = 1
>        allocated_nfds = 2
>        fds = 0x7fff7c003070
>#3  0x00007ffff0a3303c in g_main_context_iteration (context=0x7fff7c000990, 
>    may_block=may_block@entry=1)
>    at /var/tmp/portage/dev-libs/glib-2.48.1-r1/work/glib-2.48.1/glib/gmain.c:3901
>        retval = <optimized out>
>#4  0x00007ffff20f969f in QEventDispatcherGlib::processEvents (this=0x7fff7c0008c0, flags=...)
>    at kernel/qeventdispatcher_glib.cpp:417
>        d = 0x7fff7c0008e0
>        canWait = true
>        savedFlags = {i = 0}
>        result = <optimized out>
>#5  0x00007ffff20a9eba in QEventLoop::exec (this=this@entry=0x7fff835fee40, flags=..., 
>    flags@entry=...) at kernel/qeventloop.cpp:204
>        d = 0x7fff7c002f90
>        locker = {val = 13357952}
>        ref = {d = 0x7fff7c002f90, locker = @0x7fff835fedc0, exceptionCaught = true}
>#6  0x00007ffff1f0b774 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
>        d = 0xcbd310
>        locker = {val = 13357952}
>        eventLoop = {<QObject> = {_vptr.QObject = 0x7ffff22def58 <vtable for QEventLoop+16>, 
>            static staticMetaObject = {d = {superdata = 0x0, 
>                stringdata = 0x7ffff22073c0 <qt_meta_stringdata_QObject>, 
>                data = 0x7ffff22072a0 <qt_meta_data_QObject>, 
>                static_metacall = 0x7ffff20da0f0 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {
>              d = 0x7fff7c002f90}, static staticQtMetaObject = {d = {superdata = 0x0, 
>                stringdata = 0x7ffff224eec0 <qt_meta_stringdata_Qt>, 
>                data = 0x7ffff224c440 <qt_meta_data_Qt>, static_metacall = 0x0, 
>                relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {
>              superdata = 0x7ffff22e0f20 <QObject::staticMetaObject>, 
>              stringdata = 0x7ffff2265940 <qt_meta_stringdata_QEventLoop>, 
>              data = 0x7ffff22658e0 <qt_meta_data_QEventLoop>, 
>              static_metacall = 0x7ffff2143810 <QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
>        returnCode = <optimized out>
>#7  0x00007ffff1f0fb8c in QThreadPrivate::start (arg=0x67f180) at thread/qthread_unix.cpp:341
>        __clframe = {__cancel_routine = 0x7ffff1f0ed40 <QThreadPrivate::finish(void*)>, 
>          __cancel_arg = 0x67f180, __do_it = 1, __cancel_type = <optimized out>}
>        thr = 0x67f180
>        data = 0xcaeee0
>#8  0x00007ffff19e23a4 in start_thread (arg=0x7fff835ff700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fff835ff700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140735397492480, 3652746970045586707, 0, 
>                140737488342351, 140735397492480, 140737488342576, -3652933061815591661, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#9  0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 23 (Thread 0x7fffa57fa700 (LWP 7098)):
>#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
>No locals.
>#1  0x00007ffff50f3789 in base::ConditionVariable::Wait (this=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:54
>No locals.
>#2  0x00007ffff50fe077 in base::SequencedWorkerPool::Inner::ThreadLoop (this=0x7df680, 
>    this_worker=this_worker@entry=0x7fffa8099300)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/sequenced_worker_pool.cc:845
>        task = {<base::TrackingInfo> = {birth_tally = 0x0, time_posted = {ms_ = 0}, 
>            delayed_run_time = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>                static kHoursPerDay = <optimized out>, 
>                static kMillisecondsPerSecond = <optimized out>, 
>                static kMillisecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerMillisecond = <optimized out>, 
>                static kMicrosecondsPerSecond = <optimized out>, 
>                static kMicrosecondsPerMinute = <optimized out>, 
>                static kMicrosecondsPerHour = <optimized out>, 
>                static kMicrosecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerWeek = <optimized out>, 
>                static kNanosecondsPerMicrosecond = <optimized out>, 
>                static kNanosecondsPerSecond = <optimized out>, us_ = 0}, <No data fields>}}, 
>          sequence_token_id = 0, trace_id = 0, sequence_task_number = 0, 
>          shutdown_behavior = base::SequencedWorkerPool::BLOCK_SHUTDOWN, posted_from = {
>            function_name_ = 0x7ffff68d714e "Unknown", file_name_ = 0x7ffff68d714e "Unknown", 
>            line_number_ = -1, program_counter_ = 0x0}, 
>          task = {<base::internal::CallbackBase> = {bind_state_ = {ptr_ = 0x0}, 
>              polymorphic_invoke_ = 0x0}, <No data fields>}, 
>          time_to_run = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>              static kHoursPerDay = <optimized out>, 
>              static kMillisecondsPerSecond = <optimized out>, 
>              static kMillisecondsPerDay = <optimized out>, 
>              static kMicrosecondsPerMillisecond = <optimized out>, 
>              static kMicrosecondsPerSecond = <optimized out>, 
>              static kMicrosecondsPerMinute = <optimized out>, 
>              static kMicrosecondsPerHour = <optimized out>, 
>              static kMicrosecondsPerDay = <optimized out>, 
>              static kMicrosecondsPerWeek = <optimized out>, 
>              static kNanosecondsPerMicrosecond = <optimized out>, 
>              static kNanosecondsPerSecond = <optimized out>, us_ = 0}, <No data fields>}}
>        wait_time = {delta_ = 0}
>        delete_these_outside_lock = std::vector of length 0, capacity 0
>        status = (base::SequencedWorkerPool::Inner::GET_WORK_WAIT | unknown: 20)
>        lock = {lock_ = @0x7df688}
>#3  0x00007ffff50fe770 in base::SequencedWorkerPool::Worker::Run (this=0x7fffa8099300)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/sequenced_worker_pool.cc:520
>No locals.
>#4  0x00007ffff50fe940 in base::SimpleThread::ThreadMain (this=0x7fffa8099300)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/simple_thread.cc:66
>No locals.
>#5  0x00007ffff50fb65d in base::(anonymous namespace)::ThreadFunc (params=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:76
>        thread_params = <optimized out>
>        delegate = 0x7fffa8099300
>#6  0x00007ffff19e23a4 in start_thread (arg=0x7fffa57fa700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffa57fa700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140735969994496, 3652746970045586707, 0, 
>                140736389427567, 140735969994496, 140736389427760, -3652875616091136749, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#7  0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 22 (Thread 0x7fffa5ffb700 (LWP 7091)):
>#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
>No locals.
>#1  0x00007ffff50f3789 in base::ConditionVariable::Wait (this=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:54
>No locals.
>#2  0x00007ffff50186b0 in mojo::system::Waiter::Wait (this=this@entry=0x7fffa5ffa770, 
>    deadline=deadline@entry=18446744073709551615, context=context@entry=0x7fffa5ffa86c)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/third_party/mojo/src/mojo/edk/system/waiter.cc:62
>        locker = {lock_ = @0x7fffa5ffa7b0}
>#3  0x00007ffff5005404 in mojo::system::Core::WaitManyInternal (this=this@entry=0x7cb000, 
>    handles=handles@entry=0x7fff840024a0, signals=signals@entry=0x7fff84002910, 
>    num_handles=num_handles@entry=7, deadline=deadline@entry=18446744073709551615, 
>    result_index=result_index@entry=0x7fffa5ffa86c, signals_states=0x0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/third_party/mojo/src/mojo/edk/system/core.cc:600
>        dispatchers = std::vector of length 7, capacity 7 = {{ptr_ = 0x7fff84001a10}, {
>            ptr_ = 0xaa5540}, {ptr_ = 0x7fffa809d7d0}, {ptr_ = 0x7fffa809dc90}, {
>            ptr_ = 0x48a96e0}, {ptr_ = 0x7fffa80bbc50}, {ptr_ = 0x7fffa80bbcb0}}
>        waiter = {<mojo::system::Awakable> = {
>            _vptr.Awakable = 0x7ffff760efc8 <vtable for mojo::system::Waiter+16>}, cv_ = {
>            condition_ = {__data = {__lock = 0, __futex = 1, __total_seq = 1, 
>                __wakeup_seq = 0, __woken_seq = 0, __mutex = 0x7fffa5ffa7b0, __nwaiters = 3, 
>                __broadcast_seq = 0}, 
>              __size = "\000\000\000\000\001\000\000\000\001", '\000' <repeats 23 times>, "\260\247\377\245\377\177\000\000\003\000\000\000\000\000\000", __align = 4294967296}, 
>            user_mutex_ = 0x7fffa5ffa7b0}, lock_ = {lock_ = {native_handle_ = {__data = {
>                  __lock = 0, __count = 0, __owner = 0, __nusers = 1, __kind = 0, 
>                  __spins = 0, __elision = 0, __list = {__prev = 0x0, __next = 0x0}}, 
>                __size = '\000' <repeats 12 times>, "\001", '\000' <repeats 26 times>, 
>                __align = 0}}}, awoken_ = false, awake_result_ = 13, 
>          awake_context_ = 4294967295}
>        i = <optimized out>
>        rv = 0
>        num_added = 7
>#4  0x00007ffff500558a in mojo::system::Core::WaitMany (this=0x7cb000, handles=..., 
>    signals=..., num_handles=7, deadline=deadline@entry=18446744073709551615, 
>    result_index=..., signals_states=...)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/third_party/mojo/src/mojo/edk/system/core.cc:179
>        handles_reader = {buffer_ = {impl_ = {
>              data_ = {<base::DefaultDeleter<unsigned int []>> = {<No data fields>}, 
>                ptr = 0x7fff840024a0}}}}
>        signals_reader = {buffer_ = {impl_ = {
>              data_ = {<base::DefaultDeleter<unsigned int []>> = {<No data fields>}, 
>                ptr = 0x7fff84002910}}}}
>        index = 4294967295
>        rv = <optimized out>
>#5  0x00007ffff5001e76 in MojoWaitMany (handles=<optimized out>, signals=<optimized out>, 
>    num_handles=<optimized out>, deadline=deadline@entry=18446744073709551615, 
>    result_index=result_index@entry=0x7fffa5ffa990, signals_states=signals_states@entry=0x0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/third_party/mojo/src/mojo/edk/embedder/entrypoints.cc:41
>No locals.
>#6  0x00007ffff656fdfd in mojo::WaitMany<std::vector<mojo::Handle, std::allocator<mojo::Handle> >, std::vector<unsigned int, std::allocator<unsigned int> > >(std::vector<mojo::Handle, std::allocator<mojo::Handle> > const&, std::vector<unsigned int, std::allocator<unsigned int> > const&, unsigned long, decltype(nullptr)) (signals_states=void, deadline=18446744073709551615, 
>    signals=std::vector of length 7, capacity 8 = {...}, 
>    handles=std::vector of length 7, capacity 8 = {...})
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/third_party/mojo/src/mojo/public/cpp/system/handle.h:267
>        result_index = 4294967295
>        result = <optimized out>
>#7  mojo::common::MessagePumpMojo::DoInternalWork (this=this@entry=0x7fff84001940, 
>    run_state=..., block=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/mojo/common/message_pump_mojo.cc:178
>        deadline = 18446744073709551615
>        wait_state = {handles = std::vector of length 7, capacity 8 = {{value_ = 8}, {
>              value_ = 3}, {value_ = 10}, {value_ = 11}, {value_ = 15}, {value_ = 19}, {
>              value_ = 20}}, wait_signals = std::vector of length 7, capacity 8 = {1, 1, 1, 
>            1, 1, 1, 1}}
>        wait_many_result = <optimized out>
>        result = 4
>        did_work = <optimized out>
>        cloned_handlers = std::map with 6 elements = {[{value_ = 3}] = {handler = 0xaa5f10, 
>            wait_signals = 1, deadline = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>                static kHoursPerDay = <optimized out>, 
>                static kMillisecondsPerSecond = <optimized out>, 
>                static kMillisecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerMillisecond = <optimized out>, 
>                static kMicrosecondsPerSecond = <optimized out>, 
>                static kMicrosecondsPerMinute = <optimized out>, 
>                static kMicrosecondsPerHour = <optimized out>, 
>                static kMicrosecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerWeek = <optimized out>, 
>                static kNanosecondsPerMicrosecond = <optimized out>, 
>                static kNanosecondsPerSecond = <optimized out>, us_ = 0}, <No data fields>}, 
>            id = 0}, [{value_ = 10}] = {handler = 0xaa5f10, wait_signals = 1, 
>            deadline = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>                static kHoursPerDay = <optimized out>, 
>                static kMillisecondsPerSecond = <optimized out>, 
>                static kMillisecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerMillisecond = <optimized out>, 
>                static kMicrosecondsPerSecond = <optimized out>, 
>                static kMicrosecondsPerMinute = <optimized out>, 
>                static kMicrosecondsPerHour = <optimized out>, 
>                static kMicrosecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerWeek = <optimized out>, 
>                static kNanosecondsPerMicrosecond = <optimized out>, 
>                static kNanosecondsPerSecond = <optimized out>, us_ = 0}, <No data fields>}, 
>            id = 2}, [{value_ = 11}] = {handler = 0xaa5f10, wait_signals = 1, 
>            deadline = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>                static kHoursPerDay = <optimized out>, 
>                static kMillisecondsPerSecond = <optimized out>, 
>                static kMillisecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerMillisecond = <optimized out>, 
>                static kMicrosecondsPerSecond = <optimized out>, 
>                static kMicrosecondsPerMinute = <optimized out>, 
>                static kMicrosecondsPerHour = <optimized out>, 
>                static kMicrosecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerWeek = <optimized out>, 
>                static kNanosecondsPerMicrosecond = <optimized out>, 
>                static kNanosecondsPerSecond = <optimized out>, us_ = 0}, <No data fields>}, 
>            id = 3}, [{value_ = 15}] = {handler = 0xaa5f10, wait_signals = 1, 
>            deadline = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>                static kHoursPerDay = <optimized out>, 
>                static kMillisecondsPerSecond = <optimized out>, 
>                static kMillisecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerMillisecond = <optimized out>, 
>                static kMicrosecondsPerSecond = <optimized out>, 
>                static kMicrosecondsPerMinute = <optimized out>, 
>                static kMicrosecondsPerHour = <optimized out>, 
>                static kMicrosecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerWeek = <optimized out>, 
>                static kNanosecondsPerMicrosecond = <optimized out>, 
>                static kNanosecondsPerSecond = <optimized out>, us_ = 0}, <No data fields>}, 
>            id = 5}, [{value_ = 19}] = {handler = 0xaa5f10, wait_signals = 1, 
>            deadline = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>                static kHoursPerDay = <optimized out>, 
>                static kMillisecondsPerSecond = <optimized out>, 
>                static kMillisecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerMillisecond = <optimized out>, 
>                static kMicrosecondsPerSecond = <optimized out>, 
>                static kMicrosecondsPerMinute = <optimized out>, 
>                static kMicrosecondsPerHour = <optimized out>, 
>                static kMicrosecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerWeek = <optimized out>, 
>                static kNanosecondsPerMicrosecond = <optimized out>, 
>                static kNanosecondsPerSecond = <optimized out>, us_ = 0}, <No data fields>}, 
>            id = 6}, [{value_ = 20}] = {handler = 0xaa5f10, wait_signals = 1, 
>            deadline = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>                static kHoursPerDay = <optimized out>, 
>                static kMillisecondsPerSecond = <optimized out>, 
>                static kMillisecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerMillisecond = <optimized out>, 
>                static kMicrosecondsPerSecond = <optimized out>, 
>                static kMicrosecondsPerMinute = <optimized out>, 
>                static kMicrosecondsPerHour = <optimized out>, 
>                static kMicrosecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerWeek = <optimized out>, 
>                static kNanosecondsPerMicrosecond = <optimized out>, 
>                static kNanosecondsPerSecond = <optimized out>, us_ = 0}, <No data fields>}, 
>            id = 7}}
>#8  0x00007ffff657003e in mojo::common::MessagePumpMojo::DoRunLoop (
>    this=this@entry=0x7fff84001940, run_state=run_state@entry=0x7fffa5ffabf0, 
>    delegate=delegate@entry=0xaa6000)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/mojo/common/message_pump_mojo.cc:150
>        block = <optimized out>
>        more_work_is_plausible = <optimized out>
>#9  0x00007ffff6570179 in mojo::common::MessagePumpMojo::Run (this=0x7fff84001940, 
>    delegate=0xaa6000)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/mojo/common/message_pump_mojo.cc:119
>        run_state = {delayed_work_time = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>              static kHoursPerDay = <optimized out>, 
>              static kMillisecondsPerSecond = <optimized out>, 
>              static kMillisecondsPerDay = <optimized out>, 
>              static kMicrosecondsPerMillisecond = <optimized out>, 
>              static kMicrosecondsPerSecond = <optimized out>, 
>              static kMicrosecondsPerMinute = <optimized out>, 
>              static kMicrosecondsPerHour = <optimized out>, 
>              static kMicrosecondsPerDay = <optimized out>, 
>              static kMicrosecondsPerWeek = <optimized out>, 
>              static kNanosecondsPerMicrosecond = <optimized out>, 
>              static kNanosecondsPerSecond = <optimized out>, us_ = 0}, <No data fields>}, 
>          read_handle = {handle_ = {<mojo::Handle> = {value_ = 8}, <No data fields>}}, 
>          write_handle = {handle_ = {<mojo::Handle> = {value_ = 7}, <No data fields>}}, 
>          should_quit = false}
>        old_state = 0x0
>#10 0x00007ffff50e7888 in base::RunLoop::Run (this=this@entry=0x7fffa5ffae20)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/run_loop.cc:55
>        stopwatch = {start_time_ = {ms_ = 1874362}, wallclock_duration_ms_ = 0, 
>          current_thread_data_ = 0x7fff84001230, excluded_duration_ms_ = 0, parent_ = 0x0}
>        this = 0x7fffa5ffae20
>#11 0x00007ffff50d3405 in base::MessageLoop::Run (this=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_loop.cc:287
>        run_loop = {loop_ = 0xaa6000, previous_run_loop_ = 0x0, run_depth_ = 1, 
>          run_called_ = true, quit_called_ = false, running_ = true, 
>          quit_when_idle_received_ = false, weak_factory_ = {weak_reference_owner_ = {
>              flag_ = {ptr_ = 0x0}}, ptr_ = 0x7fffa5ffae20}}
>#12 0x00007ffff50fedf6 in base::Thread::Run (message_loop=<optimized out>, this=0xaa5e60)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:198
>No locals.
>#13 base::Thread::ThreadMain (this=0xaa5e60)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:248
>        message_loop = {impl_ = {
>            data_ = {<base::DefaultDeleter<base::MessageLoop>> = {<No data fields>}, 
>              ptr = 0xaa6000}}}
>#14 0x00007ffff50fb65d in base::(anonymous namespace)::ThreadFunc (params=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:76
>        thread_params = <optimized out>
>        delegate = 0xaa5e60
>#15 0x00007ffff19e23a4 in start_thread (arg=0x7fffa5ffb700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffa5ffb700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140735978387200, 3652746970045586707, 0, 
>                140737488337951, 140735978387200, 140737488338144, -3652874514968896237, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#16 0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 21 (Thread 0x7fffa67fc700 (LWP 7090)):
>#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
>No locals.
>#1  0x00007ffff50f3789 in base::ConditionVariable::Wait (this=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:54
>No locals.
>#2  0x00007ffff50fe077 in base::SequencedWorkerPool::Inner::ThreadLoop (this=0x7df680, 
>    this_worker=this_worker@entry=0xa94430)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/sequenced_worker_pool.cc:845
>        task = {<base::TrackingInfo> = {birth_tally = 0x0, time_posted = {ms_ = 0}, 
>            delayed_run_time = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>                static kHoursPerDay = <optimized out>, 
>                static kMillisecondsPerSecond = <optimized out>, 
>                static kMillisecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerMillisecond = <optimized out>, 
>                static kMicrosecondsPerSecond = <optimized out>, 
>                static kMicrosecondsPerMinute = <optimized out>, 
>                static kMicrosecondsPerHour = <optimized out>, 
>                static kMicrosecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerWeek = <optimized out>, 
>                static kNanosecondsPerMicrosecond = <optimized out>, 
>                static kNanosecondsPerSecond = <optimized out>, us_ = 0}, <No data fields>}}, 
>          sequence_token_id = 0, trace_id = 0, sequence_task_number = 0, 
>          shutdown_behavior = base::SequencedWorkerPool::BLOCK_SHUTDOWN, posted_from = {
>            function_name_ = 0x7ffff68d714e "Unknown", file_name_ = 0x7ffff68d714e "Unknown", 
>            line_number_ = -1, program_counter_ = 0x0}, 
>          task = {<base::internal::CallbackBase> = {bind_state_ = {ptr_ = 0x0}, 
>              polymorphic_invoke_ = 0x0}, <No data fields>}, 
>          time_to_run = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>              static kHoursPerDay = <optimized out>, 
>              static kMillisecondsPerSecond = <optimized out>, 
>              static kMillisecondsPerDay = <optimized out>, 
>              static kMicrosecondsPerMillisecond = <optimized out>, 
>              static kMicrosecondsPerSecond = <optimized out>, 
>              static kMicrosecondsPerMinute = <optimized out>, 
>              static kMicrosecondsPerHour = <optimized out>, 
>              static kMicrosecondsPerDay = <optimized out>, 
>              static kMicrosecondsPerWeek = <optimized out>, 
>              static kNanosecondsPerMicrosecond = <optimized out>, 
>              static kNanosecondsPerSecond = <optimized out>, us_ = 0}, <No data fields>}}
>        wait_time = {delta_ = 0}
>        delete_these_outside_lock = std::vector of length 0, capacity 0
>        status = (base::SequencedWorkerPool::Inner::GET_WORK_NOT_FOUND | unknown: 20)
>        lock = {lock_ = @0x7df688}
>#3  0x00007ffff50fe770 in base::SequencedWorkerPool::Worker::Run (this=0xa94430)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/sequenced_worker_pool.cc:520
>No locals.
>#4  0x00007ffff50fe940 in base::SimpleThread::ThreadMain (this=0xa94430)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/simple_thread.cc:66
>No locals.
>#5  0x00007ffff50fb65d in base::(anonymous namespace)::ThreadFunc (params=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:76
>        thread_params = <optimized out>
>        delegate = 0xa94430
>#6  0x00007ffff19e23a4 in start_thread (arg=0x7fffa67fc700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffa67fc700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140735986779904, 3652746970045586707, 0, 
>                140737488336815, 140735986779904, 140737488337008, -3652869017947628269, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#7  0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 20 (Thread 0x7fffa6ffd700 (LWP 7089)):
>#0  0x00007ffff141da3d in poll () at ../sysdeps/unix/syscall-template.S:84
>No locals.
>#1  0x00007ffff0a32f2c in g_main_context_poll (priority=2147483647, n_fds=1, 
>    fds=0x7fff8c002e70, timeout=<optimized out>, context=0x7fff8c000990)
>    at /var/tmp/portage/dev-libs/glib-2.48.1-r1/work/glib-2.48.1/glib/gmain.c:4135
>        poll_func = 0x7ffff0a41e30 <g_poll>
>#2  g_main_context_iterate (context=context@entry=0x7fff8c000990, block=block@entry=1, 
>    dispatch=dispatch@entry=1, self=<optimized out>)
>    at /var/tmp/portage/dev-libs/glib-2.48.1-r1/work/glib-2.48.1/glib/gmain.c:3835
>        max_priority = 2147483647
>        timeout = 9990
>        some_ready = <optimized out>
>        nfds = 1
>        allocated_nfds = 1
>        fds = 0x7fff8c002e70
>#3  0x00007ffff0a3303c in g_main_context_iteration (context=0x7fff8c000990, 
>    may_block=may_block@entry=1)
>    at /var/tmp/portage/dev-libs/glib-2.48.1-r1/work/glib-2.48.1/glib/gmain.c:3901
>        retval = <optimized out>
>#4  0x00007ffff20f969f in QEventDispatcherGlib::processEvents (this=0x7fff8c0008c0, flags=...)
>    at kernel/qeventdispatcher_glib.cpp:417
>        d = 0x7fff8c0008e0
>        canWait = true
>        savedFlags = {i = 0}
>        result = <optimized out>
>#5  0x00007ffff20a9eba in QEventLoop::exec (this=this@entry=0x7fffa6ffce40, flags=..., 
>    flags@entry=...) at kernel/qeventloop.cpp:204
>        d = 0x7fff8c002d90
>        locker = {val = 8650320}
>        ref = {d = 0x7fff8c002d90, locker = @0x7fffa6ffcdc0, exceptionCaught = true}
>#6  0x00007ffff1f0b774 in QThread::exec (this=<optimized out>) at thread/qthread.cpp:500
>        d = 0x83fde0
>        locker = {val = 8650320}
>        eventLoop = {<QObject> = {_vptr.QObject = 0x7ffff22def58 <vtable for QEventLoop+16>, 
>            static staticMetaObject = {d = {superdata = 0x0, 
>                stringdata = 0x7ffff22073c0 <qt_meta_stringdata_QObject>, 
>                data = 0x7ffff22072a0 <qt_meta_data_QObject>, 
>                static_metacall = 0x7ffff20da0f0 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {
>              d = 0x7fff8c002d90}, static staticQtMetaObject = {d = {superdata = 0x0, 
>                stringdata = 0x7ffff224eec0 <qt_meta_stringdata_Qt>, 
>                data = 0x7ffff224c440 <qt_meta_data_Qt>, static_metacall = 0x0, 
>                relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {
>              superdata = 0x7ffff22e0f20 <QObject::staticMetaObject>, 
>              stringdata = 0x7ffff2265940 <qt_meta_stringdata_QEventLoop>, 
>              data = 0x7ffff22658e0 <qt_meta_data_QEventLoop>, 
>              static_metacall = 0x7ffff2143810 <QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
>        returnCode = <optimized out>
>#7  0x00007ffff1f0fb8c in QThreadPrivate::start (arg=0x88f560) at thread/qthread_unix.cpp:341
>        __clframe = {__cancel_routine = 0x7ffff1f0ed40 <QThreadPrivate::finish(void*)>, 
>          __cancel_arg = 0x88f560, __do_it = 1, __cancel_type = <optimized out>}
>        thr = 0x88f560
>        data = 0x83fe90
>#8  0x00007ffff19e23a4 in start_thread (arg=0x7fffa6ffd700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffa6ffd700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140735995172608, 3652746970045586707, 0, 
>                140737488343487, 140735995172608, 140737488343712, -3652867916825387757, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#9  0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 19 (Thread 0x7fffa77fe700 (LWP 7088)):
>#0  0x00007ffff1427063 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
>No locals.
>#1  0x00007ffff07c1665 in epoll_dispatch (base=0x7fff940019f0, tv=<optimized out>)
>    at /var/tmp/portage/dev-libs/libevent-2.1.5-r4/work/libevent-2.1.5-beta/epoll.c:463
>        epollop = 0x7fff94000940
>        events = 0x7fff94001c90
>        i = <optimized out>
>        res = <optimized out>
>        timeout = <optimized out>
>        __func__ = "epoll_dispatch"
>#2  0x00007ffff07b7b76 in event_base_loop (base=0x7fff940019f0, flags=flags@entry=1)
>    at /var/tmp/portage/dev-libs/libevent-2.1.5-r4/work/libevent-2.1.5-beta/event.c:1902
>        evsel = 0x7ffff09e6b80 <epollops>
>        tv = {tv_sec = 0, tv_usec = 0}
>        tv_p = 0x0
>        res = <optimized out>
>        done = 0
>        retval = 0
>        __func__ = "event_base_loop"
>#3  0x00007ffff50b2919 in base::MessagePumpLibevent::Run (this=0x7fff94001940, 
>    delegate=0x7fff9c001ba0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_pump_libevent.cc:260
>        did_work = <optimized out>
>        auto_reset_keep_running = {scoped_variable_ = 0x7fff94001948, original_value_ = true}
>        auto_reset_in_run = {scoped_variable_ = 0x7fff94001949, original_value_ = false}
>        timer_event = {impl_ = {data_ = {<base::DefaultDeleter<event>> = {<No data fields>}, 
>              ptr = 0x7fff94002150}}}
>#4  0x00007ffff50e7888 in base::RunLoop::Run (this=this@entry=0x7fffa77fde20)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/run_loop.cc:55
>        stopwatch = {start_time_ = {ms_ = 1874011}, wallclock_duration_ms_ = 0, 
>          current_thread_data_ = 0x7fff94001230, excluded_duration_ms_ = 0, parent_ = 0x0}
>        this = 0x7fffa77fde20
>#5  0x00007ffff50d3405 in base::MessageLoop::Run (this=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_loop.cc:287
>        run_loop = {loop_ = 0x7fff9c001ba0, previous_run_loop_ = 0x0, run_depth_ = 1, 
>          run_called_ = true, quit_called_ = false, running_ = true, 
>          quit_when_idle_received_ = false, weak_factory_ = {weak_reference_owner_ = {
>              flag_ = {ptr_ = 0x0}}, ptr_ = 0x7fffa77fde20}}
>#6  0x00007ffff50fedf6 in base::Thread::Run (message_loop=<optimized out>, 
>    this=0x7fff9c001a18)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:198
>No locals.
>#7  base::Thread::ThreadMain (this=0x7fff9c001a18)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:248
>        message_loop = {impl_ = {
>            data_ = {<base::DefaultDeleter<base::MessageLoop>> = {<No data fields>}, 
>              ptr = 0x7fff9c001ba0}}}
>#8  0x00007ffff50fb65d in base::(anonymous namespace)::ThreadFunc (params=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:76
>        thread_params = <optimized out>
>        delegate = 0x7fff9c001a18
>#9  0x00007ffff19e23a4 in start_thread (arg=0x7fffa77fe700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffa77fe700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140736003565312, 3652746970045586707, 0, 
>                140736364251375, 140736003565312, 140736364251568, -3652871215897141997, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#10 0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 18 (Thread 0x7fffa7fff700 (LWP 7087)):
>#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
>No locals.
>#1  0x00007ffff50f3789 in base::ConditionVariable::Wait (this=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:54
>No locals.
>#2  0x00007ffff50f4037 in base::WaitableEvent::TimedWait (this=this@entry=0x7fff980018c0, 
>    max_time=...)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:214
>        current_time = <optimized out>
>        end_time = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>            static kHoursPerDay = <optimized out>, 
>            static kMillisecondsPerSecond = <optimized out>, 
>            static kMillisecondsPerDay = <optimized out>, 
>            static kMicrosecondsPerMillisecond = <optimized out>, 
>            static kMicrosecondsPerSecond = <optimized out>, 
>            static kMicrosecondsPerMinute = <optimized out>, 
>            static kMicrosecondsPerHour = <optimized out>, 
>            static kMicrosecondsPerDay = <optimized out>, 
>            static kMicrosecondsPerWeek = <optimized out>, 
>            static kNanosecondsPerMicrosecond = <optimized out>, 
>            static kNanosecondsPerSecond = <optimized out>, 
>            us_ = 1873011548}, <No data fields>}
>        finite_time = false
>        sw = {<base::WaitableEvent::Waiter> = {
>            _vptr.Waiter = 0x7ffff7610760 <vtable for base::SyncWaiter+16>}, fired_ = false, 
>          signaling_event_ = 0x0, lock_ = {lock_ = {native_handle_ = {__data = {__lock = 0, 
>                  __count = 0, __owner = 0, __nusers = 1, __kind = 0, __spins = 0, 
>                  __elision = 0, __list = {__prev = 0x0, __next = 0x0}}, 
>                __size = '\000' <repeats 12 times>, "\001", '\000' <repeats 26 times>, 
>                __align = 0}}}, cv_ = {condition_ = {__data = {__lock = 0, __futex = 1, 
>                __total_seq = 1, __wakeup_seq = 0, __woken_seq = 0, __mutex = 0x7fffa7ffecb8, 
>                __nwaiters = 3, __broadcast_seq = 0}, 
>              __size = "\000\000\000\000\001\000\000\000\001", '\000' <repeats 23 times>, "\270\354\377\247\377\177\000\000\003\000\000\000\000\000\000", __align = 4294967296}, 
>            user_mutex_ = 0x7fffa7ffecb8}}
>#3  0x00007ffff50f4104 in base::WaitableEvent::Wait (this=this@entry=0x7fff980018c0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:154
>No locals.
>#4  0x00007ffff50d6f2b in base::MessagePumpDefault::Run (this=0x7fff980018b0, 
>    delegate=0x884590)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_pump_default.cc:52
>        did_work = <optimized out>
>        allow_wait = {previous_value_ = true}
>#5  0x00007ffff50e7888 in base::RunLoop::Run (this=this@entry=0x7fffa7ffee20)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/run_loop.cc:55
>        stopwatch = {start_time_ = {ms_ = 1874011}, wallclock_duration_ms_ = 0, 
>          current_thread_data_ = 0x7fff980011d0, excluded_duration_ms_ = 0, parent_ = 0x0}
>        this = 0x7fffa7ffee20
>#6  0x00007ffff50d3405 in base::MessageLoop::Run (this=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_loop.cc:287
>        run_loop = {loop_ = 0x884590, previous_run_loop_ = 0x0, run_depth_ = 1, 
>          run_called_ = true, quit_called_ = false, running_ = true, 
>          quit_when_idle_received_ = false, weak_factory_ = {weak_reference_owner_ = {
>              flag_ = {ptr_ = 0x0}}, ptr_ = 0x7fffa7ffee20}}
>#7  0x00007ffff50fedf6 in base::Thread::Run (message_loop=<optimized out>, this=0x893a50)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:198
>No locals.
>#8  base::Thread::ThreadMain (this=0x893a50)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:248
>        message_loop = {impl_ = {
>            data_ = {<base::DefaultDeleter<base::MessageLoop>> = {<No data fields>}, 
>              ptr = 0x884590}}}
>#9  0x00007ffff50fb65d in base::(anonymous namespace)::ThreadFunc (params=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:76
>        thread_params = <optimized out>
>        delegate = 0x893a50
>#10 0x00007ffff19e23a4 in start_thread (arg=0x7fffa7fff700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffa7fff700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140736011958016, 3652746970045586707, 0, 
>                140737488341087, 140736011958016, 140737488341280, -3652870114774901485, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#11 0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 17 (Thread 0x7fffbcff9700 (LWP 7086)):
>#0  pthread_cond_timedwait ()
>    at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
>No locals.
>#1  0x00007ffff50f3832 in base::ConditionVariable::TimedWait (this=this@entry=0x7fffbcff8d00, 
>    max_time=...)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:102
>        usecs = <optimized out>
>        relative_time = <optimized out>
>        absolute_time = {tv_sec = 1890, tv_nsec = 579213846}
>        now = {tv_sec = 1890, tv_nsec = 578218846}
>#2  0x00007ffff50f40d5 in base::WaitableEvent::TimedWait (this=this@entry=0x7fff9c001950, 
>    max_time=...)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:212
>        max_wait = {delta_ = 995}
>        current_time = <optimized out>
>        end_time = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>            static kHoursPerDay = <optimized out>, 
>            static kMillisecondsPerSecond = <optimized out>, 
>            static kMillisecondsPerDay = <optimized out>, 
>            static kMicrosecondsPerMillisecond = <optimized out>, 
>            static kMicrosecondsPerSecond = <optimized out>, 
>            static kMicrosecondsPerMinute = <optimized out>, 
>            static kMicrosecondsPerHour = <optimized out>, 
>            static kMicrosecondsPerDay = <optimized out>, 
>            static kMicrosecondsPerWeek = <optimized out>, 
>            static kNanosecondsPerMicrosecond = <optimized out>, 
>            static kNanosecondsPerSecond = <optimized out>, 
>            us_ = 1890579213}, <No data fields>}
>        finite_time = true
>        sw = {<base::WaitableEvent::Waiter> = {
>            _vptr.Waiter = 0x7ffff7610760 <vtable for base::SyncWaiter+16>}, fired_ = false, 
>          signaling_event_ = 0x0, lock_ = {lock_ = {native_handle_ = {__data = {__lock = 0, 
>                  __count = 0, __owner = 0, __nusers = 1, __kind = 0, __spins = 0, 
>                  __elision = 0, __list = {__prev = 0x0, __next = 0x0}}, 
>                __size = '\000' <repeats 12 times>, "\001", '\000' <repeats 26 times>, 
>                __align = 0}}}, cv_ = {condition_ = {__data = {__lock = 0, __futex = 1, 
>                __total_seq = 1, __wakeup_seq = 0, __woken_seq = 0, __mutex = 0x7fffbcff8cd8, 
>                __nwaiters = 3, __broadcast_seq = 0}, 
>              __size = "\000\000\000\000\001\000\000\000\001", '\000' <repeats 23 times>, "Ø\377\274\377\177\000\000\003\000\000\000\000\000\000", __align = 4294967296}, 
>            user_mutex_ = 0x7fffbcff8cd8}}
>#3  0x00007ffff50d6f73 in base::MessagePumpDefault::Run (this=0x7fff9c001940, 
>    delegate=0x7fffa8005590)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_pump_default.cc:56
>        delay = {delta_ = 995}
>        did_work = <optimized out>
>        allow_wait = {previous_value_ = true}
>#4  0x00007ffff50e7888 in base::RunLoop::Run (this=this@entry=0x7fffbcff8e20)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/run_loop.cc:55
>        stopwatch = {start_time_ = {ms_ = 1874011}, wallclock_duration_ms_ = 0, 
>          current_thread_data_ = 0x7fff9c001230, excluded_duration_ms_ = 167, parent_ = 0x0}
>        this = 0x7fffbcff8e20
>#5  0x00007ffff50d3405 in base::MessageLoop::Run (this=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_loop.cc:287
>        run_loop = {loop_ = 0x7fffa8005590, previous_run_loop_ = 0x0, run_depth_ = 1, 
>          run_called_ = true, quit_called_ = false, running_ = true, 
>          quit_when_idle_received_ = false, weak_factory_ = {weak_reference_owner_ = {
>              flag_ = {ptr_ = 0x0}}, ptr_ = 0x7fffbcff8e20}}
>#6  0x00007ffff50fedf6 in base::Thread::Run (message_loop=<optimized out>, 
>    this=0x7fffa8005440)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:198
>No locals.
>#7  base::Thread::ThreadMain (this=0x7fffa8005440)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:248
>        message_loop = {impl_ = {
>            data_ = {<base::DefaultDeleter<base::MessageLoop>> = {<No data fields>}, 
>              ptr = 0x7fffa8005590}}}
>#8  0x00007ffff50fb65d in base::(anonymous namespace)::ThreadFunc (params=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:76
>        thread_params = <optimized out>
>        delegate = 0x7fffa8005440
>#9  0x00007ffff19e23a4 in start_thread (arg=0x7fffbcff9700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffbcff9700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140736364254976, 3652746970045586707, 0, 
>                140736389427407, 140736364254976, 140736389427600, -3652889909205426925, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#10 0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 16 (Thread 0x7fffbd7fa700 (LWP 7085)):
>#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
>No locals.
>#1  0x00007ffff50f3789 in base::ConditionVariable::Wait (this=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:54
>No locals.
>#2  0x00007ffff49f3fc9 in cc::TaskGraphRunner::Run (this=0x892960)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/cc/raster/task_graph_runner.cc:362
>        lock = {lock_ = @0x892968}
>#3  0x00007ffff50fe940 in base::SimpleThread::ThreadMain (this=0x889b90)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/simple_thread.cc:66
>No locals.
>#4  0x00007ffff50fb65d in base::(anonymous namespace)::ThreadFunc (params=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:76
>        thread_params = <optimized out>
>        delegate = 0x889b90
>#5  0x00007ffff19e23a4 in start_thread (arg=0x7fffbd7fa700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffbd7fa700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140736372647680, 3652746970045586707, 0, 
>                140737488342111, 140736372647680, 140737488342304, -3652893208277181165, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#6  0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 15 (Thread 0x7fffbdffb700 (LWP 7084)):
>#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
>No locals.
>#1  0x00007ffff50f3789 in base::ConditionVariable::Wait (this=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:54
>No locals.
>#2  0x00007ffff50f4037 in base::WaitableEvent::TimedWait (this=this@entry=0x7fffac0018c0, 
>    max_time=...)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:214
>        current_time = <optimized out>
>        end_time = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>            static kHoursPerDay = <optimized out>, 
>            static kMillisecondsPerSecond = <optimized out>, 
>            static kMillisecondsPerDay = <optimized out>, 
>            static kMicrosecondsPerMillisecond = <optimized out>, 
>            static kMicrosecondsPerSecond = <optimized out>, 
>            static kMicrosecondsPerMinute = <optimized out>, 
>            static kMicrosecondsPerHour = <optimized out>, 
>            static kMicrosecondsPerDay = <optimized out>, 
>            static kMicrosecondsPerWeek = <optimized out>, 
>            static kNanosecondsPerMicrosecond = <optimized out>, 
>            static kNanosecondsPerSecond = <optimized out>, 
>            us_ = 1873010774}, <No data fields>}
>        finite_time = false
>        sw = {<base::WaitableEvent::Waiter> = {
>            _vptr.Waiter = 0x7ffff7610760 <vtable for base::SyncWaiter+16>}, fired_ = false, 
>          signaling_event_ = 0x0, lock_ = {lock_ = {native_handle_ = {__data = {__lock = 0, 
>                  __count = 0, __owner = 0, __nusers = 1, __kind = 0, __spins = 0, 
>                  __elision = 0, __list = {__prev = 0x0, __next = 0x0}}, 
>                __size = '\000' <repeats 12 times>, "\001", '\000' <repeats 26 times>, 
>                __align = 0}}}, cv_ = {condition_ = {__data = {__lock = 0, __futex = 1, 
>                __total_seq = 1, __wakeup_seq = 0, __woken_seq = 0, __mutex = 0x7fffbdffacb8, 
>                __nwaiters = 3, __broadcast_seq = 0}, 
>              __size = "\000\000\000\000\001\000\000\000\001", '\000' <repeats 23 times>, "\270\254\377\275\377\177\000\000\003\000\000\000\000\000\000", __align = 4294967296}, 
>            user_mutex_ = 0x7fffbdffacb8}}
>#3  0x00007ffff50f4104 in base::WaitableEvent::Wait (this=this@entry=0x7fffac0018c0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:154
>No locals.
>#4  0x00007ffff50d6f2b in base::MessagePumpDefault::Run (this=0x7fffac0018b0, 
>    delegate=0x8659b0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_pump_default.cc:52
>        did_work = <optimized out>
>        allow_wait = {previous_value_ = true}
>#5  0x00007ffff50e7888 in base::RunLoop::Run (this=this@entry=0x7fffbdffae20)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/run_loop.cc:55
>        stopwatch = {start_time_ = {ms_ = 1874010}, wallclock_duration_ms_ = 0, 
>          current_thread_data_ = 0x7fffac0011d0, excluded_duration_ms_ = 0, parent_ = 0x0}
>        this = 0x7fffbdffae20
>#6  0x00007ffff50d3405 in base::MessageLoop::Run (this=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_loop.cc:287
>        run_loop = {loop_ = 0x8659b0, previous_run_loop_ = 0x0, run_depth_ = 1, 
>          run_called_ = true, quit_called_ = false, running_ = true, 
>          quit_when_idle_received_ = false, weak_factory_ = {weak_reference_owner_ = {
>              flag_ = {ptr_ = 0x0}}, ptr_ = 0x7fffbdffae20}}
>#7  0x00007ffff50fedf6 in base::Thread::Run (message_loop=<optimized out>, this=0x88cfe0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:198
>No locals.
>#8  base::Thread::ThreadMain (this=0x88cfe0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:248
>        message_loop = {impl_ = {
>            data_ = {<base::DefaultDeleter<base::MessageLoop>> = {<No data fields>}, 
>              ptr = 0x8659b0}}}
>#9  0x00007ffff50fb65d in base::(anonymous namespace)::ThreadFunc (params=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:76
>        thread_params = <optimized out>
>        delegate = 0x88cfe0
>#10 0x00007ffff19e23a4 in start_thread (arg=0x7fffbdffb700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffbdffb700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140736381040384, 3652746970045586707, 0, 
>                140737488342095, 140736381040384, 140737488342288, -3652892107154940653, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#11 0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 14 (Thread 0x7fffbe7fc700 (LWP 7083)):
>#0  0x00007ffff1427063 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
>No locals.
>#1  0x00007ffff07c1665 in epoll_dispatch (base=0x7fffa8001960, tv=<optimized out>)
>    at /var/tmp/portage/dev-libs/libevent-2.1.5-r4/work/libevent-2.1.5-beta/epoll.c:463
>        epollop = 0x7fffa8001c00
>        events = 0x7fffa8001c20
>        i = <optimized out>
>        res = <optimized out>
>        timeout = <optimized out>
>        __func__ = "epoll_dispatch"
>#2  0x00007ffff07b7b76 in event_base_loop (base=0x7fffa8001960, flags=flags@entry=1)
>    at /var/tmp/portage/dev-libs/libevent-2.1.5-r4/work/libevent-2.1.5-beta/event.c:1902
>        evsel = 0x7ffff09e6b80 <epollops>
>        tv = {tv_sec = 0, tv_usec = 249974}
>        tv_p = 0x7fffbe7fb960
>        res = <optimized out>
>        done = 0
>        retval = 0
>        __func__ = "event_base_loop"
>#3  0x00007ffff50b29e8 in base::MessagePumpLibevent::Run (this=0x7fffa80018b0, 
>    delegate=0x8736c0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_pump_libevent.cc:270
>        poll_tv = {tv_sec = 0, tv_usec = 249974}
>        delay = {delta_ = 249974}
>        did_work = <optimized out>
>        auto_reset_keep_running = {scoped_variable_ = 0x7fffa80018b8, original_value_ = true}
>        auto_reset_in_run = {scoped_variable_ = 0x7fffa80018b9, original_value_ = false}
>        timer_event = {impl_ = {data_ = {<base::DefaultDeleter<event>> = {<No data fields>}, 
>              ptr = 0x7fffa80020b0}}}
>#4  0x00007ffff50e7888 in base::RunLoop::Run (this=this@entry=0x7fffbe7fba90)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/run_loop.cc:55
>        stopwatch = {start_time_ = {ms_ = 1874010}, wallclock_duration_ms_ = 0, 
>          current_thread_data_ = 0x7fffa80011d0, excluded_duration_ms_ = 130, parent_ = 0x0}
>        this = 0x7fffbe7fba90
>#5  0x00007ffff50d3405 in base::MessageLoop::Run (this=this@entry=0x8736c0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_loop.cc:287
>        run_loop = {loop_ = 0x8736c0, previous_run_loop_ = 0x0, run_depth_ = 1, 
>          run_called_ = true, quit_called_ = false, running_ = true, 
>          quit_when_idle_received_ = false, weak_factory_ = {weak_reference_owner_ = {
>              flag_ = {ptr_ = 0x0}}, ptr_ = 0x7fffbe7fba90}}
>#6  0x00007ffff50fec28 in base::Thread::Run (this=this@entry=0x866ed0, 
>    message_loop=message_loop@entry=0x8736c0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:198
>No locals.
>#7  0x00007ffff467e938 in content::BrowserThreadImpl::IOThreadRun (this=this@entry=0x866ed0, 
>    message_loop=message_loop@entry=0x8736c0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/content/browser/browser_thread_impl.cc:211
>        line_number = 210
>#8  0x00007ffff467ea9b in content::BrowserThreadImpl::Run (this=0x866ed0, 
>    message_loop=0x8736c0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/content/browser/browser_thread_impl.cc:246
>        thread_id = content::BrowserThread::IO
>#9  0x00007ffff50fee78 in base::Thread::ThreadMain (this=0x866ed0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:248
>        message_loop = {impl_ = {
>            data_ = {<base::DefaultDeleter<base::MessageLoop>> = {<No data fields>}, 
>              ptr = 0x8736c0}}}
>#10 0x00007ffff50fb65d in base::(anonymous namespace)::ThreadFunc (params=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:76
>        thread_params = <optimized out>
>        delegate = 0x866ed0
>#11 0x00007ffff19e23a4 in start_thread (arg=0x7fffbe7fc700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffbe7fc700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140736389433088, 3652746970045586707, 0, 
>                140737488341455, 140736389433088, 140737488341648, -3652886610133672685, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#12 0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 13 (Thread 0x7fffbeffd700 (LWP 7082)):
>#0  0x00007ffff1427063 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
>No locals.
>#1  0x00007ffff07c1665 in epoll_dispatch (base=0x7fffb40019f0, tv=<optimized out>)
>    at /var/tmp/portage/dev-libs/libevent-2.1.5-r4/work/libevent-2.1.5-beta/epoll.c:463
>        epollop = 0x7fffb4000940
>        events = 0x7fffb4001c90
>        i = <optimized out>
>        res = <optimized out>
>        timeout = <optimized out>
>        __func__ = "epoll_dispatch"
>#2  0x00007ffff07b7b76 in event_base_loop (base=0x7fffb40019f0, flags=flags@entry=1)
>    at /var/tmp/portage/dev-libs/libevent-2.1.5-r4/work/libevent-2.1.5-beta/event.c:1902
>        evsel = 0x7ffff09e6b80 <epollops>
>        tv = {tv_sec = 16, tv_usec = 243365}
>        tv_p = 0x7fffbeffc960
>        res = <optimized out>
>        done = 0
>        retval = 0
>        __func__ = "event_base_loop"
>#3  0x00007ffff50b29e8 in base::MessagePumpLibevent::Run (this=0x7fffb4001940, 
>    delegate=0x894290)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_pump_libevent.cc:270
>        poll_tv = {tv_sec = 16, tv_usec = 243365}
>        delay = {delta_ = 16243365}
>        did_work = <optimized out>
>        auto_reset_keep_running = {scoped_variable_ = 0x7fffb4001948, original_value_ = true}
>        auto_reset_in_run = {scoped_variable_ = 0x7fffb4001949, original_value_ = false}
>        timer_event = {impl_ = {data_ = {<base::DefaultDeleter<event>> = {<No data fields>}, 
>              ptr = 0x7fffb4002150}}}
>#4  0x00007ffff50e7888 in base::RunLoop::Run (this=this@entry=0x7fffbeffca90)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/run_loop.cc:55
>        stopwatch = {start_time_ = {ms_ = 1874010}, wallclock_duration_ms_ = 0, 
>          current_thread_data_ = 0x7fffb4001230, excluded_duration_ms_ = 2, parent_ = 0x0}
>        this = 0x7fffbeffca90
>#5  0x00007ffff50d3405 in base::MessageLoop::Run (this=this@entry=0x894290)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_loop.cc:287
>        run_loop = {loop_ = 0x894290, previous_run_loop_ = 0x0, run_depth_ = 1, 
>          run_called_ = true, quit_called_ = false, running_ = true, 
>          quit_when_idle_received_ = false, weak_factory_ = {weak_reference_owner_ = {
>              flag_ = {ptr_ = 0x0}}, ptr_ = 0x7fffbeffca90}}
>#6  0x00007ffff50fec28 in base::Thread::Run (this=this@entry=0x88ba30, 
>    message_loop=message_loop@entry=0x894290)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:198
>No locals.
>#7  0x00007ffff467e888 in content::BrowserThreadImpl::CacheThreadRun (
>    this=this@entry=0x88ba30, message_loop=message_loop@entry=0x894290)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/content/browser/browser_thread_impl.cc:205
>        line_number = 204
>#8  0x00007ffff467eafb in content::BrowserThreadImpl::Run (this=0x88ba30, 
>    message_loop=0x894290)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/content/browser/browser_thread_impl.cc:244
>        thread_id = content::BrowserThread::CACHE
>#9  0x00007ffff50fee78 in base::Thread::ThreadMain (this=0x88ba30)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:248
>        message_loop = {impl_ = {
>            data_ = {<base::DefaultDeleter<base::MessageLoop>> = {<No data fields>}, 
>              ptr = 0x894290}}}
>#10 0x00007ffff50fb65d in base::(anonymous namespace)::ThreadFunc (params=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:76
>        thread_params = <optimized out>
>        delegate = 0x88ba30
>#11 0x00007ffff19e23a4 in start_thread (arg=0x7fffbeffd700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffbeffd700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140736397825792, 3652746970045586707, 0, 
>                140737488341455, 140736397825792, 140737488341648, -3652885509011432173, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#12 0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 12 (Thread 0x7fffbf7fe700 (LWP 7081)):
>#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
>No locals.
>#1  0x00007ffff50f3789 in base::ConditionVariable::Wait (this=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:54
>No locals.
>#2  0x00007ffff50f4037 in base::WaitableEvent::TimedWait (this=this@entry=0x7fffb0000950, 
>    max_time=...)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:214
>        current_time = <optimized out>
>        end_time = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>            static kHoursPerDay = <optimized out>, 
>            static kMillisecondsPerSecond = <optimized out>, 
>            static kMillisecondsPerDay = <optimized out>, 
>            static kMicrosecondsPerMillisecond = <optimized out>, 
>            static kMicrosecondsPerSecond = <optimized out>, 
>            static kMicrosecondsPerMinute = <optimized out>, 
>            static kMicrosecondsPerHour = <optimized out>, 
>            static kMicrosecondsPerDay = <optimized out>, 
>            static kMicrosecondsPerWeek = <optimized out>, 
>            static kNanosecondsPerMicrosecond = <optimized out>, 
>            static kNanosecondsPerSecond = <optimized out>, 
>            us_ = 1887513013}, <No data fields>}
>        finite_time = false
>        sw = {<base::WaitableEvent::Waiter> = {
>            _vptr.Waiter = 0x7ffff7610760 <vtable for base::SyncWaiter+16>}, fired_ = false, 
>          signaling_event_ = 0x0, lock_ = {lock_ = {native_handle_ = {__data = {__lock = 0, 
>                  __count = 0, __owner = 0, __nusers = 1, __kind = 0, __spins = 0, 
>                  __elision = 0, __list = {__prev = 0x0, __next = 0x0}}, 
>                __size = '\000' <repeats 12 times>, "\001", '\000' <repeats 26 times>, 
>                __align = 0}}}, cv_ = {condition_ = {__data = {__lock = 0, __futex = 1, 
>                __total_seq = 1, __wakeup_seq = 0, __woken_seq = 0, __mutex = 0x7fffbf7fd928, 
>                __nwaiters = 3, __broadcast_seq = 0}, 
>              __size = "\000\000\000\000\001\000\000\000\001", '\000' <repeats 23 times>, "(\331\177\277\377\177\000\000\003\000\000\000\000\000\000", __align = 4294967296}, 
>            user_mutex_ = 0x7fffbf7fd928}}
>#3  0x00007ffff50f4104 in base::WaitableEvent::Wait (this=this@entry=0x7fffb0000950)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:154
>No locals.
>#4  0x00007ffff50d6f2b in base::MessagePumpDefault::Run (this=0x7fffb0000940, 
>    delegate=0x893810)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_pump_default.cc:52
>        did_work = <optimized out>
>        allow_wait = {previous_value_ = true}
>#5  0x00007ffff50e7888 in base::RunLoop::Run (this=this@entry=0x7fffbf7fda90)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/run_loop.cc:55
>        stopwatch = {start_time_ = {ms_ = 1874010}, wallclock_duration_ms_ = 0, 
>          current_thread_data_ = 0x7fffb0001260, excluded_duration_ms_ = 2, parent_ = 0x0}
>        this = 0x7fffbf7fda90
>#6  0x00007ffff50d3405 in base::MessageLoop::Run (this=this@entry=0x893810)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_loop.cc:287
>        run_loop = {loop_ = 0x893810, previous_run_loop_ = 0x0, run_depth_ = 1, 
>          run_called_ = true, quit_called_ = false, running_ = true, 
>          quit_when_idle_received_ = false, weak_factory_ = {weak_reference_owner_ = {
>              flag_ = {ptr_ = 0x0}}, ptr_ = 0x7fffbf7fda90}}
>#7  0x00007ffff50fec28 in base::Thread::Run (this=this@entry=0x884d10, 
>    message_loop=message_loop@entry=0x893810)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:198
>No locals.
>#8  0x00007ffff467e7d8 in content::BrowserThreadImpl::ProcessLauncherThreadRun (
>    this=this@entry=0x884d10, message_loop=message_loop@entry=0x893810)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/content/browser/browser_thread_impl.cc:198
>        line_number = 197
>#9  0x00007ffff467eaeb in content::BrowserThreadImpl::Run (this=0x884d10, 
>    message_loop=0x893810)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/content/browser/browser_thread_impl.cc:242
>        thread_id = content::BrowserThread::PROCESS_LAUNCHER
>#10 0x00007ffff50fee78 in base::Thread::ThreadMain (this=0x884d10)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:248
>        message_loop = {impl_ = {
>            data_ = {<base::DefaultDeleter<base::MessageLoop>> = {<No data fields>}, 
>              ptr = 0x893810}}}
>#11 0x00007ffff50fb65d in base::(anonymous namespace)::ThreadFunc (params=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:76
>        thread_params = <optimized out>
>        delegate = 0x884d10
>#12 0x00007ffff19e23a4 in start_thread (arg=0x7fffbf7fe700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffbf7fe700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140736406218496, 3652746970045586707, 0, 
>                140737488341455, 140736406218496, 140737488341648, -3652888808083186413, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#13 0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 11 (Thread 0x7fffbffff700 (LWP 7080)):
>#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
>No locals.
>#1  0x00007ffff50f3789 in base::ConditionVariable::Wait (this=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:54
>No locals.
>#2  0x00007ffff50f4037 in base::WaitableEvent::TimedWait (this=this@entry=0x7fffb8000950, 
>    max_time=...)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:214
>        current_time = <optimized out>
>        end_time = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>            static kHoursPerDay = <optimized out>, 
>            static kMillisecondsPerSecond = <optimized out>, 
>            static kMillisecondsPerDay = <optimized out>, 
>            static kMicrosecondsPerMillisecond = <optimized out>, 
>            static kMicrosecondsPerSecond = <optimized out>, 
>            static kMicrosecondsPerMinute = <optimized out>, 
>            static kMicrosecondsPerHour = <optimized out>, 
>            static kMicrosecondsPerDay = <optimized out>, 
>            static kMicrosecondsPerWeek = <optimized out>, 
>            static kNanosecondsPerMicrosecond = <optimized out>, 
>            static kNanosecondsPerSecond = <optimized out>, 
>            us_ = 1887535720}, <No data fields>}
>        finite_time = false
>        sw = {<base::WaitableEvent::Waiter> = {
>            _vptr.Waiter = 0x7ffff7610760 <vtable for base::SyncWaiter+16>}, fired_ = false, 
>          signaling_event_ = 0x0, lock_ = {lock_ = {native_handle_ = {__data = {__lock = 0, 
>                  __count = 0, __owner = 0, __nusers = 1, __kind = 0, __spins = 0, 
>                  __elision = 0, __list = {__prev = 0x0, __next = 0x0}}, 
>                __size = '\000' <repeats 12 times>, "\001", '\000' <repeats 26 times>, 
>                __align = 0}}}, cv_ = {condition_ = {__data = {__lock = 0, __futex = 1, 
>                __total_seq = 1, __wakeup_seq = 0, __woken_seq = 0, __mutex = 0x7fffbfffe928, 
>                __nwaiters = 3, __broadcast_seq = 0}, 
>              __size = "\000\000\000\000\001\000\000\000\001", '\000' <repeats 23 times>, "(\351\377\277\377\177\000\000\003\000\000\000\000\000\000", __align = 4294967296}, 
>            user_mutex_ = 0x7fffbfffe928}}
>#3  0x00007ffff50f4104 in base::WaitableEvent::Wait (this=this@entry=0x7fffb8000950)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:154
>No locals.
>#4  0x00007ffff50d6f2b in base::MessagePumpDefault::Run (this=0x7fffb8000940, 
>    delegate=0x8812d0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_pump_default.cc:52
>        did_work = <optimized out>
>        allow_wait = {previous_value_ = true}
>#5  0x00007ffff50e7888 in base::RunLoop::Run (this=this@entry=0x7fffbfffea90)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/run_loop.cc:55
>        stopwatch = {start_time_ = {ms_ = 1874010}, wallclock_duration_ms_ = 0, 
>          current_thread_data_ = 0x7fffb8001260, excluded_duration_ms_ = 0, parent_ = 0x0}
>        this = 0x7fffbfffea90
>#6  0x00007ffff50d3405 in base::MessageLoop::Run (this=this@entry=0x8812d0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_loop.cc:287
>        run_loop = {loop_ = 0x8812d0, previous_run_loop_ = 0x0, run_depth_ = 1, 
>          run_called_ = true, quit_called_ = false, running_ = true, 
>          quit_when_idle_received_ = false, weak_factory_ = {weak_reference_owner_ = {
>              flag_ = {ptr_ = 0x0}}, ptr_ = 0x7fffbfffea90}}
>#7  0x00007ffff50fec28 in base::Thread::Run (this=this@entry=0x892d70, 
>    message_loop=message_loop@entry=0x8812d0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:198
>No locals.
>#8  0x00007ffff467e728 in content::BrowserThreadImpl::FileUserBlockingThreadRun (
>    this=this@entry=0x892d70, message_loop=message_loop@entry=0x8812d0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/content/browser/browser_thread_impl.cc:191
>        line_number = 190
>#9  0x00007ffff467eadb in content::BrowserThreadImpl::Run (this=0x892d70, 
>    message_loop=0x8812d0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/content/browser/browser_thread_impl.cc:240
>        thread_id = content::BrowserThread::FILE_USER_BLOCKING
>#10 0x00007ffff50fee78 in base::Thread::ThreadMain (this=0x892d70)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:248
>        message_loop = {impl_ = {
>            data_ = {<base::DefaultDeleter<base::MessageLoop>> = {<No data fields>}, 
>              ptr = 0x8812d0}}}
>#11 0x00007ffff50fb65d in base::(anonymous namespace)::ThreadFunc (params=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:76
>        thread_params = <optimized out>
>        delegate = 0x892d70
>#12 0x00007ffff19e23a4 in start_thread (arg=0x7fffbffff700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffbffff700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140736414611200, 3652746970045586707, 0, 
>                140737488341455, 140736414611200, 140737488341648, -3652887706960945901, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#13 0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 10 (Thread 0x7fffdc8ca700 (LWP 7079)):
>#0  0x00007ffff1427063 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
>No locals.
>#1  0x00007ffff07c1665 in epoll_dispatch (base=0x7fffc40019f0, tv=<optimized out>)
>    at /var/tmp/portage/dev-libs/libevent-2.1.5-r4/work/libevent-2.1.5-beta/epoll.c:463
>        epollop = 0x7fffc4000940
>        events = 0x7fffc4001c90
>        i = <optimized out>
>        res = <optimized out>
>        timeout = <optimized out>
>        __func__ = "epoll_dispatch"
>#2  0x00007ffff07b7b76 in event_base_loop (base=0x7fffc40019f0, flags=flags@entry=1)
>    at /var/tmp/portage/dev-libs/libevent-2.1.5-r4/work/libevent-2.1.5-beta/event.c:1902
>        evsel = 0x7ffff09e6b80 <epollops>
>        tv = {tv_sec = 0, tv_usec = 0}
>        tv_p = 0x0
>        res = <optimized out>
>        done = 0
>        retval = 0
>        __func__ = "event_base_loop"
>#3  0x00007ffff50b2919 in base::MessagePumpLibevent::Run (this=0x7fffc4001940, 
>    delegate=0x893ef0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_pump_libevent.cc:260
>        did_work = <optimized out>
>        auto_reset_keep_running = {scoped_variable_ = 0x7fffc4001948, original_value_ = true}
>        auto_reset_in_run = {scoped_variable_ = 0x7fffc4001949, original_value_ = false}
>        timer_event = {impl_ = {data_ = {<base::DefaultDeleter<event>> = {<No data fields>}, 
>              ptr = 0x7fffc4002150}}}
>#4  0x00007ffff50e7888 in base::RunLoop::Run (this=this@entry=0x7fffdc8c9a90)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/run_loop.cc:55
>        stopwatch = {start_time_ = {ms_ = 1874010}, wallclock_duration_ms_ = 0, 
>          current_thread_data_ = 0x7fffc4001230, excluded_duration_ms_ = 0, parent_ = 0x0}
>        this = 0x7fffdc8c9a90
>#5  0x00007ffff50d3405 in base::MessageLoop::Run (this=this@entry=0x893ef0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_loop.cc:287
>        run_loop = {loop_ = 0x893ef0, previous_run_loop_ = 0x0, run_depth_ = 1, 
>          run_called_ = true, quit_called_ = false, running_ = true, 
>          quit_when_idle_received_ = false, weak_factory_ = {weak_reference_owner_ = {
>              flag_ = {ptr_ = 0x0}}, ptr_ = 0x7fffdc8c9a90}}
>#6  0x00007ffff50fec28 in base::Thread::Run (this=this@entry=0x8670d0, 
>    message_loop=message_loop@entry=0x893ef0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:198
>No locals.
>#7  0x00007ffff467e678 in content::BrowserThreadImpl::FileThreadRun (
>    this=this@entry=0x8670d0, message_loop=message_loop@entry=0x893ef0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/content/browser/browser_thread_impl.cc:184
>        line_number = 183
>#8  0x00007ffff467eacb in content::BrowserThreadImpl::Run (this=0x8670d0, 
>    message_loop=0x893ef0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/content/browser/browser_thread_impl.cc:238
>        thread_id = content::BrowserThread::FILE
>#9  0x00007ffff50fee78 in base::Thread::ThreadMain (this=0x8670d0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:248
>        message_loop = {impl_ = {
>            data_ = {<base::DefaultDeleter<base::MessageLoop>> = {<No data fields>}, 
>              ptr = 0x893ef0}}}
>#10 0x00007ffff50fb65d in base::(anonymous namespace)::ThreadFunc (params=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:76
>        thread_params = <optimized out>
>        delegate = 0x8670d0
>#11 0x00007ffff19e23a4 in start_thread (arg=0x7fffdc8ca700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffdc8ca700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140736893593344, 3652746970045586707, 0, 
>                140737488341455, 140736893593344, 140737488341648, -3652820494480859885, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#12 0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 9 (Thread 0x7fffdd0cb700 (LWP 7078)):
>#0  pthread_cond_wait () at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:185
>No locals.
>#1  0x00007ffff50f3789 in base::ConditionVariable::Wait (this=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:54
>No locals.
>#2  0x00007ffff50f4037 in base::WaitableEvent::TimedWait (this=this@entry=0x7fffc00018c0, 
>    max_time=...)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:214
>        current_time = <optimized out>
>        end_time = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>            static kHoursPerDay = <optimized out>, 
>            static kMillisecondsPerSecond = <optimized out>, 
>            static kMillisecondsPerDay = <optimized out>, 
>            static kMicrosecondsPerMillisecond = <optimized out>, 
>            static kMicrosecondsPerSecond = <optimized out>, 
>            static kMicrosecondsPerMinute = <optimized out>, 
>            static kMicrosecondsPerHour = <optimized out>, 
>            static kMicrosecondsPerDay = <optimized out>, 
>            static kMicrosecondsPerWeek = <optimized out>, 
>            static kNanosecondsPerMicrosecond = <optimized out>, 
>            static kNanosecondsPerSecond = <optimized out>, 
>            us_ = 1873009503}, <No data fields>}
>        finite_time = false
>        sw = {<base::WaitableEvent::Waiter> = {
>            _vptr.Waiter = 0x7ffff7610760 <vtable for base::SyncWaiter+16>}, fired_ = false, 
>          signaling_event_ = 0x0, lock_ = {lock_ = {native_handle_ = {__data = {__lock = 0, 
>                  __count = 0, __owner = 0, __nusers = 1, __kind = 0, __spins = 0, 
>                  __elision = 0, __list = {__prev = 0x0, __next = 0x0}}, 
>                __size = '\000' <repeats 12 times>, "\001", '\000' <repeats 26 times>, 
>                __align = 0}}}, cv_ = {condition_ = {__data = {__lock = 0, __futex = 1, 
>                __total_seq = 1, __wakeup_seq = 0, __woken_seq = 0, __mutex = 0x7fffdd0ca928, 
>                __nwaiters = 3, __broadcast_seq = 0}, 
>              __size = "\000\000\000\000\001\000\000\000\001", '\000' <repeats 23 times>, "(\251\f\335\377\177\000\000\003\000\000\000\000\000\000", __align = 4294967296}, 
>            user_mutex_ = 0x7fffdd0ca928}}
>#3  0x00007ffff50f4104 in base::WaitableEvent::Wait (this=this@entry=0x7fffc00018c0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/waitable_event_posix.cc:154
>No locals.
>#4  0x00007ffff50d6f2b in base::MessagePumpDefault::Run (this=0x7fffc00018b0, 
>    delegate=0x893500)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_pump_default.cc:52
>        did_work = <optimized out>
>        allow_wait = {previous_value_ = true}
>#5  0x00007ffff50e7888 in base::RunLoop::Run (this=this@entry=0x7fffdd0caa90)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/run_loop.cc:55
>        stopwatch = {start_time_ = {ms_ = 1874009}, wallclock_duration_ms_ = 0, 
>          current_thread_data_ = 0x7fffc00011d0, excluded_duration_ms_ = 0, parent_ = 0x0}
>        this = 0x7fffdd0caa90
>#6  0x00007ffff50d3405 in base::MessageLoop::Run (this=this@entry=0x893500)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_loop.cc:287
>        run_loop = {loop_ = 0x893500, previous_run_loop_ = 0x0, run_depth_ = 1, 
>          run_called_ = true, quit_called_ = false, running_ = true, 
>          quit_when_idle_received_ = false, weak_factory_ = {weak_reference_owner_ = {
>              flag_ = {ptr_ = 0x0}}, ptr_ = 0x7fffdd0caa90}}
>#7  0x00007ffff50fec28 in base::Thread::Run (this=this@entry=0x866fc0, 
>    message_loop=message_loop@entry=0x893500)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:198
>No locals.
>#8  0x00007ffff467e5c8 in content::BrowserThreadImpl::DBThreadRun (this=this@entry=0x866fc0, 
>    message_loop=message_loop@entry=0x893500)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/content/browser/browser_thread_impl.cc:177
>        line_number = 176
>#9  0x00007ffff467eabb in content::BrowserThreadImpl::Run (this=0x866fc0, 
>    message_loop=0x893500)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/content/browser/browser_thread_impl.cc:236
>        thread_id = content::BrowserThread::DB
>#10 0x00007ffff50fee78 in base::Thread::ThreadMain (this=0x866fc0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:248
>        message_loop = {impl_ = {
>            data_ = {<base::DefaultDeleter<base::MessageLoop>> = {<No data fields>}, 
>              ptr = 0x893500}}}
>#11 0x00007ffff50fb65d in base::(anonymous namespace)::ThreadFunc (params=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:76
>        thread_params = <optimized out>
>        delegate = 0x866fc0
>#12 0x00007ffff19e23a4 in start_thread (arg=0x7fffdd0cb700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffdd0cb700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140736901986048, 3652746970045586707, 0, 
>                140737488341455, 140736901986048, 140737488341648, -3652823791405130477, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#13 0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 8 (Thread 0x7fffdd8cc700 (LWP 7077)):
>#0  pthread_cond_timedwait ()
>    at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
>No locals.
>#1  0x00007ffff50f3832 in base::ConditionVariable::TimedWait (this=this@entry=0x7fffd0007358, 
>    max_time=...)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:102
>        usecs = <optimized out>
>        relative_time = <optimized out>
>        absolute_time = {tv_sec = 2474, tv_nsec = 477040762}
>        now = {tv_sec = 1874, tv_nsec = 477040762}
>#2  0x00007ffff5101ab9 in base::PosixDynamicThreadPool::WaitForTask (this=0x7fffd0007300)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/worker_pool_posix.cc:177
>        locked = {lock_ = @0x7fffd0007330}
>        __FUNCTION__ = "WaitForTask"
>        pending_task = {<base::TrackingInfo> = {birth_tally = 0x23c34600, time_posted = {
>              ms_ = 2819157216}, 
>            delayed_run_time = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>                static kHoursPerDay = <optimized out>, 
>                static kMillisecondsPerSecond = <optimized out>, 
>                static kMillisecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerMillisecond = <optimized out>, 
>                static kMicrosecondsPerSecond = <optimized out>, 
>                static kMicrosecondsPerMinute = <optimized out>, 
>                static kMicrosecondsPerHour = <optimized out>, 
>                static kMicrosecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerWeek = <optimized out>, 
>                static kNanosecondsPerMicrosecond = <optimized out>, 
>                static kNanosecondsPerSecond = <optimized out>, 
>                us_ = 140736615944656}, <No data fields>}}, 
>          task = {<base::internal::CallbackBase> = {bind_state_ = {ptr_ = 0x7fffdd8cbdf8}, 
>              polymorphic_invoke_ = 0x7fffdd8cc700}, <No data fields>}, posted_from = {
>            function_name_ = 0x7ffff5105854 <tracked_objects::ThreadData::TallyRunOnWorkerThreadIfTracking(tracked_objects::Births const*, tracked_objects::TrackedTime const&, tracked_objects::TaskStopwatch const&)+68> "H\203\304 []A\\A]A^\303\017\037\200", 
>            file_name_ = 0x7fff001c9a2c <error: Cannot access memory at address 0x7fff001c9a2c>, line_number_ = -577978896, program_counter_ = 0x7fffdd8cbdf0}, sequence_num = -805275456, 
>          nestable = 255, is_high_res = 127}
>#3  0x00007ffff5101ff3 in base::(anonymous namespace)::WorkerThread::ThreadMain (
>    this=0x7fffd00078c0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/worker_pool_posix.cc:83
>        trace_event_unique_category_group_enabled88 = <optimized out>
>        stopwatch = {start_time_ = {ms_ = 1874476}, wallclock_duration_ms_ = 1, 
>          current_thread_data_ = 0x7fffcc0011d0, excluded_duration_ms_ = 0, parent_ = 0x0}
>        pending_task = {<base::TrackingInfo> = {birth_tally = 0x7fffa808ece0, time_posted = {
>              ms_ = 1874476}, 
>            delayed_run_time = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>                static kHoursPerDay = <optimized out>, 
>                static kMillisecondsPerSecond = <optimized out>, 
>                static kMillisecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerMillisecond = <optimized out>, 
>                static kMicrosecondsPerSecond = <optimized out>, 
>                static kMicrosecondsPerMinute = <optimized out>, 
>                static kMicrosecondsPerHour = <optimized out>, 
>                static kMicrosecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerWeek = <optimized out>, 
>                static kNanosecondsPerMicrosecond = <optimized out>, 
>                static kNanosecondsPerSecond = <optimized out>, us_ = 0}, <No data fields>}}, 
>          task = {<base::internal::CallbackBase> = {bind_state_ = {ptr_ = 0x7fffa808eca0}, 
>              polymorphic_invoke_ = 0x7ffff50fb6b0
>     <base::internal::Invoker<base::IndexSequence<0ul>, base::internal::BindState<base::internal::RunnableAdapter<void (base::(anonymous namespace)::PostTaskAndReplyRelay::*)()>, void(base::(anonymous namespace)::PostTaskAndReplyRelay*), base::internal::TypeList<base::internal::UnretainedWrapper<base::(anonymous namespace)::PostTaskAndReplyRelay> > >, base::internal::TypeList<base::internal::UnwrapTraits<base::internal::UnretainedWrapper<base::(anonymous namespace)::PostTaskAndReplyRelay> > >, base::internal::InvokeHelper<false, void, base::internal::RunnableAdapter<void (base::(anonymous namespace)::PostTaskAndReplyRelay::*)()>, base::internal::TypeList<base::(anonymous namespace)::PostTaskAndReplyRelay*> >, void()>::Run(base::internal::BindStateBase *)>}, <No data fields>}, posted_from = {
>            function_name_ = 0x7ffff6a7fad0 <net::HostResolverImpl::LoopbackProbeJob::LoopbackProbeJob(base::WeakPtr<net::HostResolverImpl> const&)::__FUNCTION__> "LoopbackProbeJob", 
>            file_name_ = 0x7ffff67d8150 "/var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/net/dns/host_resolver_impl.cc", 
>            line_number_ = 984, program_counter_ = 0x7ffff44613a0
>     <net::HostResolverImpl::HostResolverImpl(net::HostResolver::Options const&, net::NetLog*)+672>}, sequence_num = 0, nestable = true, is_high_res = false}
>        trace_event_unique_atomic88 = 140737345794016
>        trace_event_unique_tracer88 = {p_data_ = 0x0, data_ = {
>            category_group_enabled = 0x7ffff510056d <std::_Rb_tree<unsigned long, std::pair<unsigned long const, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*>, std::_Select1st<std::pair<unsigned long const, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*> >, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*> > >::_M_emplace_hint_unique<std::piecewise_construct_t const&, std::tuple<unsigned long const&>, std::tuple<> >(std::_Rb_tree_const_iterator<std::pair<unsigned long const, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*> >, std::piecewise_construct_t const&, std::tuple<unsigned long const&>&&, std::tuple<>&&)+93> "H\211\330H\203E(\001H\203\304\030[]A\\A]\303H\211\337H\211D$\b\350CI\266\376H\213D$\bH\203\304\030[]A\\A]\303\017\037", name = 0x7fffdf0cea80 "\b5\220\366\377\177", event_handle = {chunk_seq = 4047209064, 
>              chunk_index = 32767, event_index = 0}}}
>        name = "WorkerPool/7077"
>#4  0x00007ffff50fb65d in base::(anonymous namespace)::ThreadFunc (params=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:76
>        thread_params = <optimized out>
>        delegate = 0x7fffd00078c0
>#5  0x00007ffff19e23a4 in start_thread (arg=0x7fffdd8cc700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffdd8cc700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140736910378752, 3652746970045586707, 0, 
>                140736935553471, 140736910378752, 140736935553664, -3652822692430373613, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#6  0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 7 (Thread 0x7fffde0cd700 (LWP 7076)):
>#0  pthread_cond_timedwait ()
>    at ../sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:225
>No locals.
>#1  0x00007ffff50f3832 in base::ConditionVariable::TimedWait (this=this@entry=0x7fffd0007358, 
>    max_time=...)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/synchronization/condition_variable_posix.cc:102
>        usecs = <optimized out>
>        relative_time = <optimized out>
>        absolute_time = {tv_sec = 2490, tv_nsec = 84524488}
>        now = {tv_sec = 1890, tv_nsec = 84524488}
>#2  0x00007ffff5101ab9 in base::PosixDynamicThreadPool::WaitForTask (this=0x7fffd0007300)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/worker_pool_posix.cc:177
>        locked = {lock_ = @0x7fffd0007330}
>        __FUNCTION__ = "WaitForTask"
>        pending_task = {<base::TrackingInfo> = {birth_tally = 0x23c34600, time_posted = {
>              ms_ = 2819491888}, 
>            delayed_run_time = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>                static kHoursPerDay = <optimized out>, 
>                static kMillisecondsPerSecond = <optimized out>, 
>                static kMillisecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerMillisecond = <optimized out>, 
>                static kMicrosecondsPerSecond = <optimized out>, 
>                static kMicrosecondsPerMinute = <optimized out>, 
>                static kMicrosecondsPerHour = <optimized out>, 
>                static kMicrosecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerWeek = <optimized out>, 
>                static kNanosecondsPerMicrosecond = <optimized out>, 
>                static kNanosecondsPerSecond = <optimized out>, 
>                us_ = 140736548835792}, <No data fields>}}, 
>          task = {<base::internal::CallbackBase> = {bind_state_ = {ptr_ = 0x7fffde0ccdf8}, 
>              polymorphic_invoke_ = 0x7fffde0cd700}, <No data fields>}, posted_from = {
>            function_name_ = 0x7ffff5105854 <tracked_objects::ThreadData::TallyRunOnWorkerThreadIfTracking(tracked_objects::Births const*, tracked_objects::TrackedTime const&, tracked_objects::TaskStopwatch const&)+68> "H\203\304 []A\\A]A^\303\017\037\200", 
>            file_name_ = 0x7fff001cd126 <error: Cannot access memory at address 0x7fff001cd126>, line_number_ = -569586192, program_counter_ = 0x7fffde0ccdf0}, sequence_num = -805276096, 
>          nestable = 255, is_high_res = 127}
>#3  0x00007ffff5101ff3 in base::(anonymous namespace)::WorkerThread::ThreadMain (
>    this=0x7fffd0007640)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/worker_pool_posix.cc:83
>        trace_event_unique_category_group_enabled88 = <optimized out>
>        stopwatch = {start_time_ = {ms_ = 1888550}, wallclock_duration_ms_ = 1534, 
>          current_thread_data_ = 0x7fffc80011d0, excluded_duration_ms_ = 0, parent_ = 0x0}
>        pending_task = {<base::TrackingInfo> = {birth_tally = 0x7fffa80e0830, time_posted = {
>              ms_ = 1888550}, 
>            delayed_run_time = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>                static kHoursPerDay = <optimized out>, 
>                static kMillisecondsPerSecond = <optimized out>, 
>                static kMillisecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerMillisecond = <optimized out>, 
>                static kMicrosecondsPerSecond = <optimized out>, 
>                static kMicrosecondsPerMinute = <optimized out>, 
>                static kMicrosecondsPerHour = <optimized out>, 
>                static kMicrosecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerWeek = <optimized out>, 
>                static kNanosecondsPerMicrosecond = <optimized out>, 
>                static kNanosecondsPerSecond = <optimized out>, us_ = 0}, <No data fields>}}, 
>          task = {<base::internal::CallbackBase> = {bind_state_ = {ptr_ = 0x7fffa80e07e0}, 
>              polymorphic_invoke_ = 0x7ffff4455bb0 <base::internal::Invoker<base::IndexSequence<0ul, 1ul, 2ul>, base::internal::BindState<base::internal::RunnableAdapter<void (net::HostResolverImpl::ProcTask::*)(base::TimeTicks const&, unsigned int)>, void (net::HostResolverImpl::ProcTask*, base::TimeTicks const&, unsigned int), base::internal::TypeList<net::HostResolverImpl::ProcTask*, base::TimeTicks, unsigned int> >, base::internal::TypeList<base::internal::UnwrapTraits<net::HostResolverImpl::ProcTask*>, base::internal::UnwrapTraits<base::TimeTicks>, base::internal::UnwrapTraits<unsigned int> >, base::internal::InvokeHelper<false, void, base::internal::RunnableAdapter<void (net::HostResolverImpl::ProcTask::*)(base::TimeTicks const&, unsigned int)>, base::internal::TypeList<net::HostResolverImpl::ProcTask* const&, base::TimeTicks const&, unsigned int const&> >, void ()>::Run(base::internal::BindStateBase*)>}, <No data fields>}, 
>          posted_from = {
>            function_name_ = 0x7ffff6a7fab0 <net::HostResolverImpl::ProcTask::StartLookupAttempt()::__FUNCTION__> "StartLookupAttempt", 
>            file_name_ = 0x7ffff67d8150 "/var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/net/dns/host_resolver_impl.cc", 
>            line_number_ = 659, 
>            program_counter_ = 0x7ffff44595d2 <net::HostResolverImpl::Job::StartProcTask()+738>}, sequence_num = 0, nestable = true, is_high_res = false}
>        trace_event_unique_atomic88 = 140737345794016
>        trace_event_unique_tracer88 = {p_data_ = 0x0, data_ = {
>            category_group_enabled = 0x7ffff510056d <std::_Rb_tree<unsigned long, std::pair<unsigned long const, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*>, std::_Select1st<std::pair<unsigned long const, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*> >, std::less<unsigned long>, std::allocator<std::pair<unsigned long const, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*> > >::_M_emplace_hint_unique<std::piecewise_construct_t const&, std::tuple<unsigned long const&>, std::tuple<> >(std::_Rb_tree_const_iterator<std::pair<unsigned long const, std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char> >*> >, std::piecewise_construct_t const&, std::tuple<unsigned long const&>&&, std::tuple<>&&)+93> "H\211\330H\203E(\001H\203\304\030[]A\\A]\303H\211\337H\211D$\b\350CI\266\376H\213D$\bH\203\304\030[]A\\A]\303\017\037", name = 0x7fffdf0cea70 " \353\f\337\377\177", event_handle = {chunk_seq = 4047209064, 
>              chunk_index = 32767, event_index = 0}}}
>        name = "WorkerPool/7076"
>#4  0x00007ffff50fb65d in base::(anonymous namespace)::ThreadFunc (params=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:76
>        thread_params = <optimized out>
>        delegate = 0x7fffd0007640
>#5  0x00007ffff19e23a4 in start_thread (arg=0x7fffde0cd700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffde0cd700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140736918771456, 3652746970045586707, 0, 
>                140736935553455, 140736918771456, 140736935553648, -3652817193261621997, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#6  0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 6 (Thread 0x7fffde8ce700 (LWP 7075)):
>#0  0x00007ffff141f6d3 in select () at ../sysdeps/unix/syscall-template.S:84
>No locals.
>#1  0x00007ffff50c36ef in base::(anonymous namespace)::InotifyReaderCallback (
>    reader=0x7ffff78096a8 <base::(anonymous namespace)::g_inotify_reader+8>, inotify_fd=33, 
>    shutdown_fd=34)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/files/file_path_watcher_linux.cc:213
>        eintr_wrapper_result = <optimized out>
>        buffer = <optimized out>
>        bytes_read = <optimized out>
>        i = <optimized out>
>        rfds = {fds_bits = {25769803776, 0 <repeats 15 times>}}
>        select_result = <optimized out>
>        buffer_size = 0
>        ioctl_result = <optimized out>
>#2  0x00007ffff5123173 in base::Callback<void ()>::Run() const (this=0x7fffde8cdc68)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/callback.h:396
>        f = <optimized out>
>#3  base::debug::TaskAnnotator::RunTask (this=this@entry=0x7fffd0006618, 
>    queue_function=queue_function@entry=0x7ffff690351d "MessageLoop::PostTask", 
>    run_function=run_function@entry=0x7ffff6903508 "MessageLoop::RunTask", pending_task=...)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/debug/task_annotator.cc:62
>        stopwatch = {start_time_ = {ms_ = 1873971}, wallclock_duration_ms_ = 0, 
>          current_thread_data_ = 0x7fffd40011d0, excluded_duration_ms_ = 0, 
>          parent_ = 0x7fffde8cdde0}
>        queue_duration = {ms_ = 0}
>        trace_event_unique_atomic52 = 140737345794016
>        trace_event_unique_category_group_enabled52 = 0x7ffff780afe0 <base::trace_event::(anonymous namespace)::g_category_group_enabled> ""
>        trace_event_unique_tracer52 = {p_data_ = 0x0, data_ = {category_group_enabled = 0x0, 
>            name = 0x7fffd0005b50 "", event_handle = {chunk_seq = 0, chunk_index = 0, 
>              event_index = 0}}}
>        program_counter = 0x7ffff50bfbf1 <base::(anonymous namespace)::InotifyReader::InotifyReader()+641>
>#4  0x00007ffff50d3f61 in base::MessageLoop::RunTask (this=this@entry=0x7fffd00064a0, 
>    pending_task=...)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_loop.cc:473
>No locals.
>#5  0x00007ffff50d4769 in base::MessageLoop::DeferOrRunPendingTask (
>    this=this@entry=0x7fffd00064a0, pending_task=...)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_loop.cc:482
>No locals.
>#6  0x00007ffff50d4c2d in base::MessageLoop::DoWork (this=0x7fffd00064a0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_loop.cc:594
>        pending_task = {<base::TrackingInfo> = {birth_tally = 0x7fffd0006ec0, time_posted = {
>              ms_ = 1873971}, 
>            delayed_run_time = {<base::time_internal::TimeBase<base::TimeTicks>> = {
>                static kHoursPerDay = <optimized out>, 
>                static kMillisecondsPerSecond = <optimized out>, 
>                static kMillisecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerMillisecond = <optimized out>, 
>                static kMicrosecondsPerSecond = <optimized out>, 
>                static kMicrosecondsPerMinute = <optimized out>, 
>                static kMicrosecondsPerHour = <optimized out>, 
>                static kMicrosecondsPerDay = <optimized out>, 
>                static kMicrosecondsPerWeek = <optimized out>, 
>                static kNanosecondsPerMicrosecond = <optimized out>, 
>                static kNanosecondsPerSecond = <optimized out>, us_ = 0}, <No data fields>}}, 
>          task = {<base::internal::CallbackBase> = {bind_state_ = {ptr_ = 0x7fffd0006e80}, 
>              polymorphic_invoke_ = 0x7ffff50bf300 <base::internal::Invoker<base::IndexSequence<0ul, 1ul, 2ul>, base::internal::BindState<base::internal::RunnableAdapter<void (*)(base::(anonymous namespace)::InotifyReader*, int, int)>, void(base::(anonymous namespace)::InotifyReader*, int, int), base::internal::TypeList<base::(anonymous namespace)::InotifyReader*, int, int> >, base::internal::TypeList<base::internal::UnwrapTraits<base::(anonymous namespace)::InotifyReader*>, base::internal::UnwrapTraits<int>, base::internal::UnwrapTraits<int> >, base::internal::InvokeHelper<false, void, base::internal::RunnableAdapter<void (*)(base::(anonymous namespace)::InotifyReader*, int, int)>, base::internal::TypeList<base::(anonymous namespace)::InotifyReader* const&, int const&, int const&> >, void()>::Run(base::internal::BindStateBase *)>}, <No data fields>}, posted_from = {
>            function_name_ = 0x7ffff6abe8c8 <base::(anonymous namespace)::InotifyReader::InotifyReader()::__FUNCTION__> "InotifyReader", 
>            file_name_ = 0x7ffff682f6c0 "/var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/files/file_path_watcher_linux.cc", 
>            line_number_ = 268, 
>            program_counter_ = 0x7ffff50bfbf1 <base::(anonymous namespace)::InotifyReader::InotifyReader()+641>}, sequence_num = 0, nestable = true, is_high_res = false}
>#7  0x00007ffff50d6ee9 in base::MessagePumpDefault::Run (this=0x7fffd40018b0, 
>    delegate=0x7fffd00064a0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_pump_default.cc:32
>        did_work = <optimized out>
>        allow_wait = <optimized out>
>#8  0x00007ffff50e7888 in base::RunLoop::Run (this=this@entry=0x7fffde8cde20)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/run_loop.cc:55
>        stopwatch = {start_time_ = {ms_ = 1873971}, wallclock_duration_ms_ = 0, 
>          current_thread_data_ = 0x7fffd40011d0, excluded_duration_ms_ = 0, parent_ = 0x0}
>        this = 0x7fffde8cde20
>#9  0x00007ffff50d3405 in base::MessageLoop::Run (this=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_loop.cc:287
>        run_loop = {loop_ = 0x7fffd00064a0, previous_run_loop_ = 0x0, run_depth_ = 1, 
>          run_called_ = true, quit_called_ = false, running_ = true, 
>          quit_when_idle_received_ = false, weak_factory_ = {weak_reference_owner_ = {
>              flag_ = {ptr_ = 0x0}}, ptr_ = 0x7fffde8cde20}}
>#10 0x00007ffff50fedf6 in base::Thread::Run (message_loop=<optimized out>, 
>    this=0x7ffff78096f8 <base::(anonymous namespace)::g_inotify_reader+88>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:198
>No locals.
>#11 base::Thread::ThreadMain (
>    this=0x7ffff78096f8 <base::(anonymous namespace)::g_inotify_reader+88>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:248
>        message_loop = {impl_ = {
>            data_ = {<base::DefaultDeleter<base::MessageLoop>> = {<No data fields>}, 
>              ptr = 0x7fffd00064a0}}}
>#12 0x00007ffff50fb65d in base::(anonymous namespace)::ThreadFunc (params=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:76
>        thread_params = <optimized out>
>        delegate = 0x7ffff78096f8 <base::(anonymous namespace)::g_inotify_reader+88>
>#13 0x00007ffff19e23a4 in start_thread (arg=0x7fffde8ce700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffde8ce700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140736927164160, 3652746970045586707, 0, 
>                140736935552127, 140736927164160, 140736935552320, -3652816094286865133, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#14 0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 5 (Thread 0x7fffdf0cf700 (LWP 7074)):
>#0  0x00007ffff1427063 in epoll_wait () at ../sysdeps/unix/syscall-template.S:84
>No locals.
>#1  0x00007ffff07c1665 in epoll_dispatch (base=0x7fffd00019f0, tv=<optimized out>)
>    at /var/tmp/portage/dev-libs/libevent-2.1.5-r4/work/libevent-2.1.5-beta/epoll.c:463
>        epollop = 0x7fffd0000940
>        events = 0x7fffd0001c90
>        i = <optimized out>
>        res = <optimized out>
>        timeout = <optimized out>
>        __func__ = "epoll_dispatch"
>#2  0x00007ffff07b7b76 in event_base_loop (base=0x7fffd00019f0, flags=flags@entry=1)
>    at /var/tmp/portage/dev-libs/libevent-2.1.5-r4/work/libevent-2.1.5-beta/event.c:1902
>        evsel = 0x7ffff09e6b80 <epollops>
>        tv = {tv_sec = 0, tv_usec = 0}
>        tv_p = 0x0
>        res = <optimized out>
>        done = 0
>        retval = 0
>        __func__ = "event_base_loop"
>#3  0x00007ffff50b2919 in base::MessagePumpLibevent::Run (this=0x7fffd0001940, 
>    delegate=0x7d0280)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_pump_libevent.cc:260
>        did_work = <optimized out>
>        auto_reset_keep_running = {scoped_variable_ = 0x7fffd0001948, original_value_ = true}
>        auto_reset_in_run = {scoped_variable_ = 0x7fffd0001949, original_value_ = false}
>        timer_event = {impl_ = {data_ = {<base::DefaultDeleter<event>> = {<No data fields>}, 
>              ptr = 0x7fffd0007aa0}}}
>#4  0x00007ffff50e7888 in base::RunLoop::Run (this=this@entry=0x7fffdf0cee20)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/run_loop.cc:55
>        stopwatch = {start_time_ = {ms_ = 1873984}, wallclock_duration_ms_ = 0, 
>          current_thread_data_ = 0x7fffd0001230, excluded_duration_ms_ = 0, parent_ = 0x0}
>        this = 0x7fffdf0cee20
>#5  0x00007ffff50d3405 in base::MessageLoop::Run (this=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/message_loop/message_loop.cc:287
>        run_loop = {loop_ = 0x7d0280, previous_run_loop_ = 0x0, run_depth_ = 1, 
>          run_called_ = true, quit_called_ = false, running_ = true, 
>          quit_when_idle_received_ = false, weak_factory_ = {weak_reference_owner_ = {
>              flag_ = {ptr_ = 0x0}}, ptr_ = 0x7fffdf0cee20}}
>#6  0x00007ffff50fedf6 in base::Thread::Run (message_loop=<optimized out>, this=0x7dd400)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:198
>No locals.
>#7  base::Thread::ThreadMain (this=0x7dd400)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/thread.cc:248
>        message_loop = {impl_ = {
>            data_ = {<base::DefaultDeleter<base::MessageLoop>> = {<No data fields>}, 
>              ptr = 0x7d0280}}}
>#8  0x00007ffff50fb65d in base::(anonymous namespace)::ThreadFunc (params=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:76
>        thread_params = <optimized out>
>        delegate = 0x7dd400
>#9  0x00007ffff19e23a4 in start_thread (arg=0x7fffdf0cf700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffdf0cf700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140736935556864, 3652746970045586707, 0, 
>                140737488342383, 140736935556864, 140737488342576, -3652819391211135725, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#10 0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 4 (Thread 0x7fffdf8d0700 (LWP 7072)):
>#0  0x00007ffff141da3d in poll () at ../sysdeps/unix/syscall-template.S:84
>No locals.
>#1  0x00007ffff491714a in poll (__timeout=-1, __nfds=2, __fds=0x7fffdf8cfc50)
>    at /usr/include/bits/poll2.h:46
>No locals.
>#2  content::SandboxIPCHandler::Run (this=0x7ca570)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/content/browser/renderer_host/sandbox_ipc_linux.cc:91
>        r = <optimized out>
>        pfds = {{fd = 23, events = 1, revents = 0}, {fd = 22, events = 1, revents = 0}}
>        failed_polls = 0
>#3  0x00007ffff50fe80e in base::DelegateSimpleThread::Run (this=0x7ca5a0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/simple_thread.cc:87
>No locals.
>#4  0x00007ffff50fe940 in base::SimpleThread::ThreadMain (this=0x7ca5a0)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/simple_thread.cc:66
>No locals.
>#5  0x00007ffff50fb65d in base::(anonymous namespace)::ThreadFunc (params=<optimized out>)
>    at /var/tmp/portage/dev-qt/qtwebengine-5.6.1/work/qtwebengine-opensource-src-5.6.1/src/3rdparty/chromium/base/threading/platform_thread_posix.cc:76
>        thread_params = <optimized out>
>        delegate = 0x7ca5a0
>#6  0x00007ffff19e23a4 in start_thread (arg=0x7fffdf8d0700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffdf8d0700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140736943949568, 3652746970045586707, 0, 
>                140737488341599, 140736943949568, 140737488341792, -3652818292236378861, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#7  0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 3 (Thread 0x7fffe6b4d700 (LWP 7071)):
>#0  0x00007ffff141da3d in poll () at ../sysdeps/unix/syscall-template.S:84
>No locals.
>#1  0x00007ffff0a32f2c in g_main_context_poll (priority=2147483647, n_fds=2, 
>    fds=0x7fffe0003020, timeout=<optimized out>, context=0x7fffe0000990)
>    at /var/tmp/portage/dev-libs/glib-2.48.1-r1/work/glib-2.48.1/glib/gmain.c:4135
>        poll_func = 0x7ffff0a41e30 <g_poll>
>#2  g_main_context_iterate (context=context@entry=0x7fffe0000990, block=block@entry=1, 
>    dispatch=dispatch@entry=1, self=<optimized out>)
>    at /var/tmp/portage/dev-libs/glib-2.48.1-r1/work/glib-2.48.1/glib/gmain.c:3835
>        max_priority = 2147483647
>        timeout = -1
>        some_ready = <optimized out>
>        nfds = 2
>        allocated_nfds = 2
>        fds = 0x7fffe0003020
>#3  0x00007ffff0a3303c in g_main_context_iteration (context=0x7fffe0000990, 
>    may_block=may_block@entry=1)
>    at /var/tmp/portage/dev-libs/glib-2.48.1-r1/work/glib-2.48.1/glib/gmain.c:3901
>        retval = <optimized out>
>#4  0x00007ffff20f969f in QEventDispatcherGlib::processEvents (this=0x7fffe00008c0, flags=...)
>    at kernel/qeventdispatcher_glib.cpp:417
>        d = 0x7fffe00008e0
>        canWait = true
>        savedFlags = {i = 0}
>        result = <optimized out>
>#5  0x00007ffff20a9eba in QEventLoop::exec (this=this@entry=0x7fffe6b4ce10, flags=..., 
>    flags@entry=...) at kernel/qeventloop.cpp:204
>        d = 0x7fffe0002f90
>        locker = {val = 7769840}
>        ref = {d = 0x7fffe0002f90, locker = @0x7fffe6b4cd90, exceptionCaught = true}
>#6  0x00007ffff1f0b774 in QThread::exec (
>    this=this@entry=0x7ffff236fea0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>) at thread/qthread.cpp:500
>        d = 0x768e80
>        locker = {val = 7769840}
>        eventLoop = {<QObject> = {_vptr.QObject = 0x7ffff22def58 <vtable for QEventLoop+16>, 
>            static staticMetaObject = {d = {superdata = 0x0, 
>                stringdata = 0x7ffff22073c0 <qt_meta_stringdata_QObject>, 
>                data = 0x7ffff22072a0 <qt_meta_data_QObject>, 
>                static_metacall = 0x7ffff20da0f0 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {
>              d = 0x7fffe0002f90}, static staticQtMetaObject = {d = {superdata = 0x0, 
>                stringdata = 0x7ffff224eec0 <qt_meta_stringdata_Qt>, 
>                data = 0x7ffff224c440 <qt_meta_data_Qt>, static_metacall = 0x0, 
>                relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {
>              superdata = 0x7ffff22e0f20 <QObject::staticMetaObject>, 
>              stringdata = 0x7ffff2265940 <qt_meta_stringdata_QEventLoop>, 
>              data = 0x7ffff22658e0 <qt_meta_data_QEventLoop>, 
>              static_metacall = 0x7ffff2143810 <QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
>        returnCode = <optimized out>
>#7  0x00007ffff22fd495 in QDBusConnectionManager::run (
>    this=0x7ffff236fea0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>)
>    at qdbusconnection.cpp:189
>        locker = <optimized out>
>#8  0x00007ffff1f0fb8c in QThreadPrivate::start (
>    arg=0x7ffff236fea0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>)
>    at thread/qthread_unix.cpp:341
>        __clframe = {__cancel_routine = 0x7ffff1f0ed40 <QThreadPrivate::finish(void*)>, 
>          __cancel_arg = 0x7ffff236fea0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>, __do_it = 1, __cancel_type = <optimized out>}
>        thr = 0x7ffff236fea0 <(anonymous namespace)::Q_QGS__q_manager::innerFunction()::holder>
>        data = 0x768fa0
>#9  0x00007ffff19e23a4 in start_thread (arg=0x7fffe6b4d700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffe6b4d700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140737063999232, 3652746970045586707, 0, 
>                140737488343183, 140737063999232, 140737488343408, -3652727789222388461, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#10 0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 2 (Thread 0x7fffedf7b700 (LWP 7062)):
>#0  0x00007ffff141da3d in poll () at ../sysdeps/unix/syscall-template.S:84
>No locals.
>#1  0x00007ffff1122882 in poll (__timeout=-1, __nfds=1, __fds=0x7fffedf7ad40)
>    at /usr/include/bits/poll2.h:46
>No locals.
>#2  _xcb_conn_wait (c=c@entry=0x62c6f0, cond=cond@entry=0x62c730, vector=vector@entry=0x0, 
>    count=count@entry=0x0)
>    at /var/tmp/portage/x11-libs/libxcb-1.12/work/libxcb-1.12/src/xcb_conn.c:479
>        ret = <optimized out>
>        fd = {fd = 3, events = 1, revents = 0}
>#3  0x00007ffff1124687 in xcb_wait_for_event (c=0x62c6f0)
>    at /var/tmp/portage/x11-libs/libxcb-1.12/work/libxcb-1.12/src/xcb_in.c:693
>        ret = 0x0
>#4  0x00007fffef417a69 in QXcbEventReader::run (this=0x63d1a0) at qxcbconnection.cpp:1325
>        event = <optimized out>
>#5  0x00007ffff1f0fb8c in QThreadPrivate::start (arg=0x63d1a0) at thread/qthread_unix.cpp:341
>        __clframe = {__cancel_routine = 0x7ffff1f0ed40 <QThreadPrivate::finish(void*)>, 
>          __cancel_arg = 0x63d1a0, __do_it = 1, __cancel_type = <optimized out>}
>        thr = 0x63d1a0
>        data = 0x63d500
>#6  0x00007ffff19e23a4 in start_thread (arg=0x7fffedf7b700) at pthread_create.c:333
>        __res = <optimized out>
>        pd = 0x7fffedf7b700
>        now = <optimized out>
>        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {140737185822464, 3652746970045586707, 0, 
>                140737488342271, 140737185822464, 140737488342496, -3652716254013973229, 
>                -3652761003698316013}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 0x0, 
>              0x0}, data = {prev = 0x0, cleanup = 0x0, canceltype = 0}}}
>        not_first_call = <optimized out>
>        pagesize_m1 = <optimized out>
>        sp = <optimized out>
>        freesize = <optimized out>
>        __PRETTY_FUNCTION__ = "start_thread"
>#7  0x00007ffff1426a7d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:109
>No locals.
>
>Thread 1 (Thread 0x7fffef706780 (LWP 7047)):
>#0  0x00007ffff1372118 in __GI_raise (sig=sig@entry=6)
>    at ../sysdeps/unix/sysv/linux/raise.c:54
>        resultvar = 0
>        pid = 7047
>        selftid = 7047
>#1  0x00007ffff137356a in __GI_abort () at abort.c:89
>        save_stage = 2
>        act = {__sigaction_handler = {sa_handler = 0x3020303030303030, 
>            sa_sigaction = 0x3020303030303030}, sa_mask = {__val = {4051042978682190392, 
>              2314885531239528759, 2314885530818453536, 2314885530818453536, 
>              8247064187908399136, 7795506888185572399, 8299628764916114025, 
>              3472336031598185071, 4123101728032698420, 2319406791671165495, 
>              3472328228581748013, 4048771456345060400, 3978992058721513786, 
>              2314885530820098361, 2314885530818453536, 2314885530818453536}}, 
>          sa_flags = 790634528, sa_restorer = 0x7fffffffc738}
>        sigs = {__val = {32, 0 <repeats 15 times>}}
>#2  0x00007ffff13aeac1 in __libc_message (do_abort=do_abort@entry=2, 
>    fmt=fmt@entry=0x7ffff14a2c20 "*** Error in `%s': %s: 0x%s ***\n")
>    at ../sysdeps/posix/libc_fatal.c:175
>        ap = <error reading variable ap (Attempt to dereference a generic pointer.)>
>        fd = 122
>        on_2 = <optimized out>
>        list = <optimized out>
>        nlist = <optimized out>
>        cp = <optimized out>
>        written = <optimized out>
>#3  0x00007ffff13b45e6 in malloc_printerr (action=3, 
>    str=0x7ffff14a2d78 "double free or corruption (fasttop)", ptr=<optimized out>, 
>    ar_ptr=<optimized out>) at malloc.c:5007
>        buf = "00007fff9c161be0"
>        cp = <optimized out>
>        ar_ptr = <optimized out>
>        ptr = <optimized out>
>        str = 0x7ffff14a2d78 "double free or corruption (fasttop)"
>        action = 3
>#4  0x00007ffff13b4dde in _int_free (av=0x7fff9c000020, p=<optimized out>, have_lock=0)
>    at malloc.c:3868
>        size = <optimized out>
>        fb = <optimized out>
>        nextchunk = <optimized out>
>        nextsize = <optimized out>
>        nextinuse = <optimized out>
>        prevsize = <optimized out>
>        bck = <optimized out>
>        fwd = <optimized out>
>        errstr = <optimized out>
>        locked = <optimized out>
>        __func__ = "_int_free"
>#5  0x00007fffe78ed30f in nouveau_fence_trigger_work (fence=fence@entry=0x477bc40)
>    at /var/tmp/portage/media-libs/mesa-12.0.1/work/mesa-12.0.1/src/gallium/drivers/nouveau/nouveau_fence.c:58
>        work = <optimized out>
>        tmp = 0x477bc60
>#6  0x00007fffe78ed54e in nouveau_fence_update (screen=screen@entry=0x6d9050, 
>    flushed=flushed@entry=true)
>    at /var/tmp/portage/media-libs/mesa-12.0.1/work/mesa-12.0.1/src/gallium/drivers/nouveau/nouveau_fence.c:132
>        fence = 0x477bc40
>        next = 0x7fff9c15b090
>        sequence = 194
>#7  0x00007fffe798182f in nv50_default_kick_notify (push=<optimized out>)
>    at /var/tmp/portage/media-libs/mesa-12.0.1/work/mesa-12.0.1/src/gallium/drivers/nouveau/nv50/nv50_context.c:127
>        screen = 0x6d9050
>#8  0x00007fffec07defb in pushbuf_submit (push=push@entry=0x6bc250, chan=<optimized out>, 
>    chan=<optimized out>)
>    at /var/tmp/portage/x11-libs/libdrm-2.4.70/work/libdrm-2.4.70/nouveau/pushbuf.c:328
>        krec = 0x6db9d0
>        dev = 0x6db920
>        info = <optimized out>
>        kref = <optimized out>
>        req = {channel = 6320032, nr_buffers = 0, buffers = 341730454820210432, 
>          nr_relocs = 4073287952, nr_push = 32767, relocs = 11066800, push = 140737266675984, 
>          suffix0 = 3229468416, suffix1 = 79565321, vram_available = 10684528, 
>          gart_available = 12060576}
>        fifo = 0x6db630
>        bo = <optimized out>
>        krec_id = 0
>        ret = 0
>        i = <optimized out>
>#9  0x00007fffec07e1af in pushbuf_flush (push=push@entry=0x6bc250)
>    at /var/tmp/portage/x11-libs/libdrm-2.4.70/work/libdrm-2.4.70/nouveau/pushbuf.c:405
>        krec = 0x6db9d0
>        kref = <optimized out>
>        bctx = <optimized out>
>        btmp = <optimized out>
>        bo = 0x7ffff2167ae0 <QListData::shared_null>
>        ret = 0
>        i = <optimized out>
>#10 0x00007fffec07ed70 in nouveau_pushbuf_kick (push=0x6bc250, chan=<optimized out>)
>    at /var/tmp/portage/x11-libs/libdrm-2.4.70/work/libdrm-2.4.70/nouveau/pushbuf.c:779
>No locals.
>#11 0x00007fffe7981d06 in PUSH_KICK (push=<optimized out>)
>    at /var/tmp/portage/media-libs/mesa-12.0.1/work/mesa-12.0.1/src/gallium/drivers/nouveau/nouveau_winsys.h:59
>No locals.
>#12 nv50_flush (pipe=0xb82b70, fence=<optimized out>, flags=<optimized out>)
>    at /var/tmp/portage/media-libs/mesa-12.0.1/work/mesa-12.0.1/src/gallium/drivers/nouveau/nv50/nv50_context.c:40
>No locals.
>#13 0x00007fffe7685a5b in st_finish (st=st@entry=0xbe5530)
>    at /var/tmp/portage/media-libs/mesa-12.0.1/work/mesa-12.0.1/src/mesa/state_tracker/st_cb_flush.c:98
>        fence = 0x7fff9c17b760
>#14 0x00007fffe7685ac0 in st_glFinish (ctx=<optimized out>)
>    at /var/tmp/portage/media-libs/mesa-12.0.1/work/mesa-12.0.1/src/mesa/state_tracker/st_cb_flush.c:136
>No locals.
>#15 0x00007ffff2e5bc79 in QOpenGLWidgetPrivate::beginCompose (this=0xaa98a0)
>    at kernel/qopenglwidget.cpp:721
>No locals.
>#16 0x00007ffff2e29f89 in QWidgetPrivate::sendComposeStatus (w=<optimized out>, 
>    end=end@entry=false) at kernel/qwidget.cpp:12178
>No locals.
>#17 0x00007ffff2e29f47 in QWidgetPrivate::sendComposeStatus (w=<optimized out>, 
>    end=end@entry=false) at kernel/qwidget.cpp:12184
>        i = 4
>#18 0x00007ffff2e29f47 in QWidgetPrivate::sendComposeStatus (w=<optimized out>, 
>    end=end@entry=false) at kernel/qwidget.cpp:12184
>        i = 0
>#19 0x00007ffff2e29f47 in QWidgetPrivate::sendComposeStatus (w=<optimized out>, 
>    end=end@entry=false) at kernel/qwidget.cpp:12184
>        i = 0
>#20 0x00007ffff2e29f47 in QWidgetPrivate::sendComposeStatus (w=<optimized out>, 
>    end=end@entry=false) at kernel/qwidget.cpp:12184
>        i = 2
>#21 0x00007ffff2e29f47 in QWidgetPrivate::sendComposeStatus (w=<optimized out>, 
>    end=end@entry=false) at kernel/qwidget.cpp:12184
>        i = 0
>#22 0x00007ffff2e29f47 in QWidgetPrivate::sendComposeStatus (w=<optimized out>, 
>    end=end@entry=false) at kernel/qwidget.cpp:12184
>        i = 0
>#23 0x00007ffff2e29f47 in QWidgetPrivate::sendComposeStatus (w=<optimized out>, 
>    end=end@entry=false) at kernel/qwidget.cpp:12184
>        i = 2
>#24 0x00007ffff2e29f47 in QWidgetPrivate::sendComposeStatus (w=<optimized out>, 
>    end=end@entry=false) at kernel/qwidget.cpp:12184
>        i = 3
>#25 0x00007ffff2e014fe in QWidgetBackingStore::qt_flush (widget=0x840800, region=..., 
>    backingStore=0x7d9da0, tlw=0x840800, tlwOffset=..., widgetTextures=0x63d180, 
>    widgetBackingStore=0xa31350) at kernel/qwidgetbackingstore.cpp:108
>        offset = {xp = 0, yp = 0}
>        fpsDebug = false
>        widgetBackingStore = 0xa31350
>        widgetTextures = 0x63d180
>        tlw = 0x840800
>        backingStore = 0x7d9da0
>        region = @0x7fffffffcdd0: {d = 0x7ffff2c96130 <QRegion::shared_empty>, 
>          static shared_empty = {ref = {atomic = {_q_value = {<std::__atomic_base<int>> = {
>                    static _S_alignment = 4, _M_i = -1}, <No data fields>}}}, 
>            qt_rgn = 0x7ffff2c9b340 <qrp>}}
>        widget = 0x840800
>        tlwOffset = @0xa3139c: {xp = 0, yp = 0}
>        fpsDebug = false
>#26 0x00007ffff2e0255d in QWidgetBackingStore::flush (this=this@entry=0xa31350, 
>    widget=widget@entry=0x0) at kernel/qwidgetbackingstore.cpp:1387
>        target = 0x840800
>        tl = 0x63d180
>        hasDirtyOnScreenWidgets = false
>        flushed = false
>#27 0x00007ffff2e042e2 in QWidgetBackingStore::doSync (this=this@entry=0xa31350)
>    at kernel/qwidgetbackingstore.cpp:1279
>        paintPending = {a = 16, s = 1, ptr = 0x7fffffffcee0, {
>            array = " \230\252\000\000\000\000\000\006\000\000\000\377\177\000\000L\000\000\000\000\000\000\000\000\307}\300\t\022\276\004p\353\303\000\000\000\000\000\001\000\000\000\000\000\000\000\240d\232\000\000\000\000\000\022\000\000\000\000\000\000\000\000\026\233", '\000' <repeats 21 times>, "\323B\265\346\377\177\000\000e\000\000\000\000\000\000\000\000+m\361\377\177\000\000L\000\000\000\000\000\000\000\030\000\000\000\000\000\000", 
>            q_for_alignment_1 = 11180064, q_for_alignment_2 = 5.5236855407064702e-317}}
>        updatesDisabled = <optimized out>
>        repaintAllWidgets = <optimized out>
>        inTopLevelResize = <optimized out>
>        tlwRect = <optimized out>
>        surfaceGeometry = <optimized out>
>        toClean = {d = 0x7ffff2c96130 <QRegion::shared_empty>, static shared_empty = {ref = {
>              atomic = {_q_value = {<std::__atomic_base<int>> = {static _S_alignment = 4, 
>                    _M_i = -1}, <No data fields>}}}, qt_rgn = 0x7ffff2c9b340 <qrp>}}
>        opaqueNonOverlappedWidgets = {a = 32, s = 0, ptr = 0x7fffffffcf70, {
>            array = "\000\000\000\000\000\000\000\000\224\201;\361\377\177", '\000' <repeats 11 times>, "\307}\300\t\022\276\004\000\000\000\000\000\000\000\000`\257\214\000\000\000\000\000\022\000\000\000\000\000\000\000\000\026\233", '\000' <repeats 13 times>, "\370\v\333\346\377\177", '\000' <repeats 11 times>, "\026\243\000\000\000\000\000\022", '\000' <repeats 16 times>, "\026\233\000\000\000\000\000`\320\377\377\377\177\000\000`\257\214\000\000\000\000\000Q\331\352\362\377\177\000\000`\257\214", '\000' <repeats 13 times>, "`\257\214\000\000\000\000\000\022", '\000' <repeats 15 times>, "\215\217\351\362\377\177\000\000\020\323}\000\000\000\000\000"..., q_for_alignment_1 = 0, q_for_alignment_2 = 0}}
>        beginPaintInfo = <optimized out>
>        dirtyCopy = {d = 0x7fff001cd8c4, static shared_empty = {ref = {atomic = {
>                _q_value = {<std::__atomic_base<int>> = {static _S_alignment = 4, 
>                    _M_i = -1}, <No data fields>}}}, qt_rgn = 0x7ffff2c9b340 <qrp>}}
>#28 0x00007ffff2e04d2f in QWidgetBackingStore::sync (this=0xa31350)
>    at kernel/qwidgetbackingstore.cpp:1145
>No locals.
>#29 0x00007ffff2e244cf in QWidgetPrivate::syncBackingStore (this=0x8453a0)
>    at kernel/qwidget.cpp:1942
>No locals.
>#30 0x00007ffff2e3c038 in QWidget::event (this=this@entry=0x840800, 
>    event=event@entry=0xcae080) at kernel/qwidget.cpp:9053
>No locals.
>#31 0x00007ffff2f36c6b in QMainWindow::event (this=0x840800, event=0xcae080)
>    at widgets/qmainwindow.cpp:1543
>No locals.
>#32 0x00007ffff2df6d0c in QApplicationPrivate::notify_helper (this=<optimized out>, 
>    receiver=0x840800, e=0xcae080) at kernel/qapplication.cpp:3804
>        consumed = <optimized out>
>        this = <optimized out>
>        e = 0xcae080
>        receiver = 0x840800
>#33 0x00007ffff2dfc246 in QApplication::notify (this=0x7fffffffd850, receiver=0x840800, 
>    e=0xcae080) at kernel/qapplication.cpp:3561
>        w = 0x840800
>        extra = <optimized out>
>        isProxyWidget = <optimized out>
>        res = false
>#34 0x00007ffff20ab04a in QCoreApplication::notifyInternal2 (receiver=0x840800, 
>    event=event@entry=0xcae080) at kernel/qcoreapplication.cpp:1015
>        selfRequired = true
>        result = false
>        cbdata = {0x840800, 0xcae080, 0x7fffffffd3ef}
>        d = <optimized out>
>        threadData = 0x61eb10
>        loopLevelCounter = {threadData = 0x61eb10}
>#35 0x00007ffff20ad06a in QCoreApplication::sendEvent (event=0xcae080, 
>    receiver=<optimized out>) at kernel/qcoreapplication.h:225
>No locals.
>#36 QCoreApplicationPrivate::sendPostedEvents (receiver=receiver@entry=0x0, 
>    event_type=event_type@entry=0, data=0x61eb10) at kernel/qcoreapplication.cpp:1650
>        e = 0xcae080
>        pe = <optimized out>
>        r = <optimized out>
>        unlocker = {m = <synthetic pointer>}
>        event_deleter = {d = 0xcae080}
>        locker = {val = 6417208}
>        startOffset = 0
>        i = @0x61eb2c: 2
>        cleanup = {receiver = 0x0, event_type = 0, data = 0x61eb10, exceptionCaught = true}
>#37 0x00007ffff20ad528 in QCoreApplication::sendPostedEvents (receiver=receiver@entry=0x0, 
>    event_type=event_type@entry=0) at kernel/qcoreapplication.cpp:1508
>        data = <optimized out>
>#38 0x00007ffff20f9623 in postEventSourceDispatch (s=0x68aee0)
>    at kernel/qeventdispatcher_glib.cpp:270
>        source = 0x68aee0
>#39 0x00007ffff0a32d37 in g_main_dispatch (context=0x7fffe80016f0)
>    at /var/tmp/portage/dev-libs/glib-2.48.1-r1/work/glib-2.48.1/glib/gmain.c:3154
>        dispatch = 0x7ffff20f9610 <postEventSourceDispatch(GSource*, GSourceFunc, gpointer)>
>        prev_source = 0x0
>        was_in_call = 0
>        user_data = 0x0
>        callback = 0x0
>        cb_funcs = <optimized out>
>        cb_data = <optimized out>
>        need_destroy = <optimized out>
>        source = 0x68aee0
>        current = 0x764820
>        i = 0
>#40 g_main_context_dispatch (context=context@entry=0x7fffe80016f0)
>    at /var/tmp/portage/dev-libs/glib-2.48.1-r1/work/glib-2.48.1/glib/gmain.c:3769
>No locals.
>#41 0x00007ffff0a32f90 in g_main_context_iterate (context=context@entry=0x7fffe80016f0, 
>    block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
>    at /var/tmp/portage/dev-libs/glib-2.48.1-r1/work/glib-2.48.1/glib/gmain.c:3840
>        max_priority = 0
>        timeout = 0
>        some_ready = 1
>        nfds = <optimized out>
>        allocated_nfds = 4
>        fds = 0x8634d0
>#42 0x00007ffff0a3303c in g_main_context_iteration (context=0x7fffe80016f0, 
>    may_block=may_block@entry=1)
>    at /var/tmp/portage/dev-libs/glib-2.48.1-r1/work/glib-2.48.1/glib/gmain.c:3901
>        retval = <optimized out>
>#43 0x00007ffff20f969f in QEventDispatcherGlib::processEvents (this=0x67f0e0, flags=...)
>    at kernel/qeventdispatcher_glib.cpp:417
>        d = 0x68bb90
>        canWait = true
>        savedFlags = {i = 0}
>        result = <optimized out>
>#44 0x00007ffff20a9eba in QEventLoop::exec (this=this@entry=0x7fffffffd6e0, flags=..., 
>    flags@entry=...) at kernel/qeventloop.cpp:204
>        d = 0x8d9f90
>        locker = {val = 6418064}
>        ref = {d = 0x8d9f90, locker = @0x7fffffffd660, exceptionCaught = true}
>#45 0x00007ffff20b183c in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1285
>        threadData = 0x61eb10
>        eventLoop = {<QObject> = {_vptr.QObject = 0x7ffff22def58 <vtable for QEventLoop+16>, 
>            static staticMetaObject = {d = {superdata = 0x0, 
>                stringdata = 0x7ffff22073c0 <qt_meta_stringdata_QObject>, 
>                data = 0x7ffff22072a0 <qt_meta_data_QObject>, 
>                static_metacall = 0x7ffff20da0f0 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {
>              d = 0x8d9f90}, static staticQtMetaObject = {d = {superdata = 0x0, 
>                stringdata = 0x7ffff224eec0 <qt_meta_stringdata_Qt>, 
>                data = 0x7ffff224c440 <qt_meta_data_Qt>, static_metacall = 0x0, 
>                relatedMetaObjects = 0x0, extradata = 0x0}}}, static staticMetaObject = {d = {
>              superdata = 0x7ffff22e0f20 <QObject::staticMetaObject>, 
>              stringdata = 0x7ffff2265940 <qt_meta_stringdata_QEventLoop>, 
>              data = 0x7ffff22658e0 <qt_meta_data_QEventLoop>, 
>              static_metacall = 0x7ffff2143810 <QEventLoop::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}
>        returnCode = <optimized out>
>#46 0x00007ffff289bc3c in QGuiApplication::exec () at kernel/qguiapplication.cpp:1607
>No locals.
>#47 0x00007ffff2df3cc5 in QApplication::exec () at kernel/qapplication.cpp:2979
>No locals.
>#48 0x0000000000402bb8 in main (argc=2, argv=<optimized out>) at main.cpp:164
>        style = {d = 0x7ffff2166a00 <QArrayData::shared_null>}
>        app = {<QtSingleApplication> = {<QApplication> = {<QGuiApplication> = {<QCoreApplication> = {<QObject> = {_vptr.QObject = 0x7ffff7dbe318 <vtable for MainApplication+16>, 
>                    static staticMetaObject = {d = {superdata = 0x0, 
>                        stringdata = 0x7ffff22073c0 <qt_meta_stringdata_QObject>, 
>                        data = 0x7ffff22072a0 <qt_meta_data_QObject>, 
>                        static_metacall = 0x7ffff20da0f0 <QObject::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, d_ptr = {
>                      d = 0x61ecb0}, static staticQtMetaObject = {d = {superdata = 0x0, 
>                        stringdata = 0x7ffff224eec0 <qt_meta_stringdata_Qt>, 
>                        data = 0x7ffff224c440 <qt_meta_data_Qt>, static_metacall = 0x0, 
>                        relatedMetaObjects = 0x0, extradata = 0x0}}}, 
>                  static staticMetaObject = {d = {
>                      superdata = 0x7ffff22e0f20 <QObject::staticMetaObject>, 
>                      stringdata = 0x7ffff2265b00 <qt_meta_stringdata_QCoreApplication>, 
>                      data = 0x7ffff22659e0 <qt_meta_data_QCoreApplication>, 
>                      static_metacall = 0x7ffff2143990 <QCoreApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, 
>                  static self = 0x7fffffffd850}, static staticMetaObject = {d = {
>                    superdata = 0x7ffff22df0a0 <QCoreApplication::staticMetaObject>, 
>                    stringdata = 0x7ffff2bd76c0 <qt_meta_stringdata_QGuiApplication>, 
>                    data = 0x7ffff2bd7480 <qt_meta_data_QGuiApplication>, 
>                    static_metacall = 0x7ffff28a65a0 <QGuiApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}, 
>              static staticMetaObject = {d = {
>                  superdata = 0x7ffff2c83c00 <QGuiApplication::staticMetaObject>, 
>                  stringdata = 0x7ffff3183ca0 <qt_meta_stringdata_QApplication>, 
>                  data = 0x7ffff3183b20 <qt_meta_data_QApplication>, 
>                  static_metacall = 0x7ffff2df9b40 <QApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}}, 
>            static staticMetaObject = {d = {
>                superdata = 0x7ffff32ce7c0 <QApplication::staticMetaObject>, 
>                stringdata = 0x7ffff7b497e0 <qt_meta_stringdata_QtSingleApplication>, 
>                data = 0x7ffff7b49720 <qt_meta_data_QtSingleApplication>, 
>                static_metacall = 0x7ffff7ab3f20 <QtSingleApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, 
>            peer = 0x7e2080, actWin = 0x0}, static staticMetaObject = {d = {
>              superdata = 0x7ffff7dbbd80 <QtSingleApplication::staticMetaObject>, 
>              stringdata = 0x7ffff7b4c7e0 <qt_meta_stringdata_MainApplication>, 
>              data = 0x7ffff7b4c5e0 <qt_meta_data_MainApplication>, 
>              static_metacall = 0x7ffff7ab67d0 <MainApplication::qt_static_metacall(QObject*, QMetaObject::Call, int, void**)>, relatedMetaObjects = 0x0, extradata = 0x0}}, 
>          m_isPrivate = false, m_isPortable = false, m_isClosing = false, 
>          m_isRestoring = false, m_isStartingAfterCrash = false, m_history = 0x93bac0, 
>          m_bookmarks = 0x863930, m_autoFill = 0x85aa40, m_cookieJar = 0x852cc0, 
>          m_plugins = 0x88e340, m_browsingLibrary = 0x0, m_networkManager = 0x88f390, 
>          m_restoreManager = 0x0, m_downloadManager = 0x0, m_userAgentManager = 0x85b880, 
>          m_searchEnginesManager = 0x94a400, m_html5PermissionsManager = 0x0, 
>          m_desktopNotifications = 0x0, m_webProfile = 0x853e80, m_autoSaver = 0x888e90, 
>          m_windows = {<QListSpecialMethods<BrowserWindow*>> = {<No data fields>}, {p = {
>                static shared_null = {ref = {atomic = {
>                      _q_value = {<std::__atomic_base<int>> = {static _S_alignment = 4, 
>                          _M_i = -1}, <No data fields>}}}, alloc = 0, begin = 0, end = 0, 
>                  array = {0x0}}, d = 0xa219a0}, d = 0xa219a0}}, m_lastActiveWindow = {wp = {
>              d = 0x9af700, value = 0x840800}}, 
>          m_postLaunchActions = {<QListSpecialMethods<MainApplication::PostLaunchAction>> = {<No data fields>}, {p = {static shared_null = {ref = {atomic = {
>                      _q_value = {<std::__atomic_base<int>> = {static _S_alignment = 4, 
>                          _M_i = -1}, <No data fields>}}}, alloc = 0, begin = 0, end = 0, 
>                  array = {0x0}}, d = 0x7ffff2167ae0 <QListData::shared_null>}, 
>              d = 0x7ffff2167ae0 <QListData::shared_null>}}, m_languageFile = {static null = 
>    {<No data fields>}, d = 0x7ffff2166a00 <QArrayData::shared_null>}}

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