Package: libwebkit2gtk-4.0-37
Version: 2.28.2-2+b1
Severity: normal
File: /usr/lib/x86_64-linux-gnu/webkit2gtk-4.0/WebKitWebProcess
Usertags: crash

I got a random crash (SIGSEGV) in WebKitWebProcess. I've included the
gdb backtrace and some possibly related syslog messages below. I don't
know how to reproduce the crash. I'm not entirely sure but I think it
was from liferea. It could also have been from evolution or gnome-ring. 
If more data from the below core file is needed, it will be available
until it is automatically deleted in one week's time. If this bug
report isn't useful, please close it.

Jun 22 21:40:26 kernel: Code: 00 0f 84 cf 0d 00 00 49 8d 7e 08 e8 b6 4c 1c 01 
48 8d 35 ef d1 a1 01 48 89 c7 e8 a7 31 94 ff 48 8b 6b 38 0f b6 c0 89 44 24 14 
<48> 8b 45 00 48 8b 40 10 48 89 44 24 08 49 8b 46 08 48 89 44 24 30
Jun 22 21:40:26 kernel: WebKitWebProces[4176684]: segfault at 0 ip 
00007f2c105a6654 sp 00007ffddbb32310 error 4 in 
libwebkit2gtk-4.0.so.37.44.4[7f2c0f8ea000+3008000]
Jun 22 21:38:39 WebKitWebProces[4176684]: WebKit wasn't able to find the GL 
video sink dependencies. Hardware-accelerated zero-copy video rendering can't 
be enabled without this plugin.
Jun 22 21:38:39 WebKitWebProces[4176684]: WebKit wasn't able to find the GL 
video sink dependencies. Hardware-accelerated zero-copy video rendering can't 
be enabled without this plugin.

$ gdb -batch -n -ex 'set pagination off' -ex bt -ex 'bt full' -ex 'thread apply 
all bt full' --core 
/var/crash/1000/4176684-1000-1000-11-1592833226-chianamo--usr-lib-x86_64-linux-gnu-webkit2gtk-4.0-WebKitWebProcess.core
 /usr/lib/x86_64-linux-gnu/webkit2gtk-4.0/WebKitWebProcess
[New LWP 4176684]
[New LWP 4176686]
[New LWP 4176703]
[New LWP 4176688]
[New LWP 4176691]
[New LWP 4177107]
[New LWP 4176707]
[New LWP 4176705]
[New LWP 4177109]
[New LWP 4176704]
[New LWP 4177101]
[New LWP 4176706]
[New LWP 4177110]
[New LWP 4177108]
[New LWP 414318]
[New LWP 409773]
[New LWP 414319]
[New LWP 409881]
[New LWP 409923]
[New LWP 409890]
[New LWP 409928]
[New LWP 409926]
[New LWP 414317]
[New LWP 409772]
[New LWP 409875]
[New LWP 409774]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by 
`/usr/lib/x86_64-linux-gnu/webkit2gtk-4.0/WebKitWebProcess 7 28'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  operator() () at 
../Source/WebCore/platform/graphics/gstreamer/WebKitWebSourceGStreamer.cpp:699
699     
../Source/WebCore/platform/graphics/gstreamer/WebKitWebSourceGStreamer.cpp: No 
such file or directory.
[Current thread is 1 (Thread 0x7f2c0869cf80 (LWP 4176684))]
#0  operator()() () at 
../Source/WebCore/platform/graphics/gstreamer/WebKitWebSourceGStreamer.cpp:699
#1  0x00007f2c0dfbe9fc in WTF::Function<void ()>::operator()() const () at 
../Source/WTF/wtf/Function.h:84
#2  WTF::RunLoop::performWork() () at ../Source/WTF/wtf/RunLoop.cpp:124
#3  0x00007f2c0e00c839 in operator() () at 
../Source/WTF/wtf/glib/RunLoopGLib.cpp:68
#4  _FUN() () at ../Source/WTF/wtf/glib/RunLoopGLib.cpp:70
#5  0x00007f2c0e79b4de in g_main_dispatch (context=0x56541f0bebb0) at 
../../../glib/gmain.c:3309
#6  g_main_context_dispatch (context=context@entry=0x56541f0bebb0) at 
../../../glib/gmain.c:3974
#7  0x00007f2c0e79b890 in g_main_context_iterate (context=0x56541f0bebb0, 
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at 
../../../glib/gmain.c:4047
#8  0x00007f2c0e79bb63 in g_main_loop_run (loop=0x56541f0a5860) at 
../../../glib/gmain.c:4241
#9  0x00007f2c0e00d298 in WTF::RunLoop::run() () at 
../Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#10 0x00007f2c1059e5bf in WebKit::AuxiliaryProcessMain<WebKit::WebProcess, 
WebKit::WebProcessMainGtk>(int, char**) () at 
../Source/WebKit/Shared/AuxiliaryProcessMain.h:68
#11 0x00007f2c0f630e0b in __libc_start_main (main=0x56541e4e9760 <main()>, 
argc=3, argv=0x7ffddbb32738, init=<optimized out>, fini=<optimized out>, 
rtld_fini=<optimized out>, stack_end=0x7ffddbb32728) at ../csu/libc-start.c:308
#12 0x000056541e4e97ea in _start ()
#0  operator()() () at 
../Source/WebCore/platform/graphics/gstreamer/WebKitWebSourceGStreamer.cpp:699
#1  0x00007f2c0dfbe9fc in WTF::Function<void ()>::operator()() const () at 
../Source/WTF/wtf/Function.h:84
#2  WTF::RunLoop::performWork() () at ../Source/WTF/wtf/RunLoop.cpp:124
#3  0x00007f2c0e00c839 in operator() () at 
../Source/WTF/wtf/glib/RunLoopGLib.cpp:68
#4  _FUN() () at ../Source/WTF/wtf/glib/RunLoopGLib.cpp:70
#5  0x00007f2c0e79b4de in g_main_dispatch (context=0x56541f0bebb0) at 
../../../glib/gmain.c:3309
        dispatch = 0x7f2c0e00c850 <_FUN()>
        prev_source = 0x0
        was_in_call = 0
        user_data = 0x7f2c058fa000
        callback = 0x7f2c0e00c830 <_FUN()>
        cb_funcs = 0x7f2c0e870280 <g_source_callback_funcs>
        cb_data = 0x56541f167300
        need_destroy = <optimized out>
        source = 0x56541f27b660
        current = 0x56541f0bec70
        i = 0
        __func__ = "g_main_dispatch"
#6  g_main_context_dispatch (context=context@entry=0x56541f0bebb0) at 
../../../glib/gmain.c:3974
#7  0x00007f2c0e79b890 in g_main_context_iterate (context=0x56541f0bebb0, 
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at 
../../../glib/gmain.c:4047
        max_priority = 100
        timeout = 0
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = <optimized out>
        fds = 0x56541f16e260
#8  0x00007f2c0e79bb63 in g_main_loop_run (loop=0x56541f0a5860) at 
../../../glib/gmain.c:4241
        __func__ = "g_main_loop_run"
#9  0x00007f2c0e00d298 in WTF::RunLoop::run() () at 
../Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#10 0x00007f2c1059e5bf in WebKit::AuxiliaryProcessMain<WebKit::WebProcess, 
WebKit::WebProcessMainGtk>(int, char**) () at 
../Source/WebKit/Shared/AuxiliaryProcessMain.h:68
#11 0x00007f2c0f630e0b in __libc_start_main (main=0x56541e4e9760 <main()>, 
argc=3, argv=0x7ffddbb32738, init=<optimized out>, fini=<optimized out>, 
rtld_fini=<optimized out>, stack_end=0x7ffddbb32728) at ../csu/libc-start.c:308
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 2863400618128946216, 
94919285708736, 140728289404720, 0, 0, 8426054907315205160, 
8452400994078405672}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 
0x7ffddbb32758, 0x7f2c12be0190}, data = {prev = 0x0, cleanup = 0x0, canceltype 
= -609015976}}}
        not_first_call = <optimized out>
#12 0x000056541e4e97ea in _start ()

Thread 26 (Thread 0x7f2b6b7fe700 (LWP 409774)):
#0  0x00007f2c0f6fcb7f in __GI___poll (fds=0x7f2b580015e0, nfds=2, timeout=460) 
at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007f2c0e79b7fe in g_main_context_poll (priority=<optimized out>, 
n_fds=2, fds=0x7f2b580015e0, timeout=<optimized out>, context=0x7f2b58000b60) 
at ../../../glib/gmain.c:4346
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f2c0e7ab1d0 <g_poll>
        max_priority = 2147483647
        timeout = 460
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = <optimized out>
        fds = 0x7f2b580015e0
#2  g_main_context_iterate (context=0x7f2b58000b60, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4042
        max_priority = 2147483647
        timeout = 460
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = <optimized out>
        fds = 0x7f2b580015e0
#3  0x00007f2c0e79bb63 in g_main_loop_run (loop=0x7f2b58001480) at 
../../../glib/gmain.c:4241
        __func__ = "g_main_loop_run"
#4  0x00007f2c0e00d298 in WTF::RunLoop::run() () at 
../Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#5  0x00007f2c0dfc0004 in WTF::Function<void ()>::operator()() const () at 
../Source/WTF/wtf/Function.h:84
#6  WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) () at 
../Source/WTF/wtf/Threading.cpp:148
#7  0x00007f2c0e00e779 in wtfThreadEntryPoint() () at 
../Source/WTF/wtf/posix/ThreadingPOSIX.cpp:200
#8  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139824463865600, 
-8424850421097057240, 140728289399694, 140728289399695, 139824463862848, 
139824463865600, 8449383824994186280, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#9  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 25 (Thread 0x7f2b698ff700 (LWP 409875)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f2c0e7e7b02 in g_cond_wait_until (cond=cond@entry=0x56541f1717c8, 
mutex=mutex@entry=0x56541f1717c0, end_time=end_time@entry=1851049597609) at 
../../../glib/gthread-posix.c:1588
        now = {tv_sec = 1851049, tv_nsec = 97610170}
        span = {tv_sec = 0, tv_nsec = 499998830}
        sampled = 0
        res = <optimized out>
        success = <optimized out>
#2  0x00007f2c0e76c5d1 in g_async_queue_pop_intern_unlocked 
(queue=0x56541f1717c0, wait=wait@entry=1, end_time=1851049597609) at 
../../../glib/gasyncqueue.c:422
        retval = <optimized out>
        __func__ = "g_async_queue_pop_intern_unlocked"
#3  0x00007f2c0e76cc3d in g_async_queue_timeout_pop_unlocked (queue=<optimized 
out>, timeout=timeout@entry=500000) at ../../../glib/gasyncqueue.c:574
        end_time = <optimized out>
        __func__ = "g_async_queue_timeout_pop_unlocked"
#4  0x00007f2c0e7c4eea in g_thread_pool_wait_for_new_task (pool=<optimized 
out>) at ../../../glib/gthreadpool.c:278
        task = <optimized out>
        task = <optimized out>
        pool = <optimized out>
#5  g_thread_pool_thread_proxy (data=<optimized out>) at 
../../../glib/gthreadpool.c:343
        task = <optimized out>
        pool = <optimized out>
#6  0x00007f2c0e7c452d in g_thread_proxy (data=0x56541f343520) at 
../../../glib/gthread.c:807
        thread = 0x56541f343520
        __func__ = "g_thread_proxy"
#7  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139824431363840, 
-8424850421097057240, 139824951954046, 139824951954047, 139824431361088, 
139824431363840, 8449377638630667304, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#8  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 24 (Thread 0x7f2b8897a700 (LWP 409772)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f2c0e7e7b02 in g_cond_wait_until (cond=cond@entry=0x56541f1717c8, 
mutex=mutex@entry=0x56541f1717c0, end_time=end_time@entry=1851049597835) at 
../../../glib/gthread-posix.c:1588
        now = {tv_sec = 1851049, tv_nsec = 97835804}
        span = {tv_sec = 0, tv_nsec = 499999196}
        sampled = 0
        res = <optimized out>
        success = <optimized out>
#2  0x00007f2c0e76c5d1 in g_async_queue_pop_intern_unlocked 
(queue=0x56541f1717c0, wait=wait@entry=1, end_time=1851049597835) at 
../../../glib/gasyncqueue.c:422
        retval = <optimized out>
        __func__ = "g_async_queue_pop_intern_unlocked"
#3  0x00007f2c0e76cc3d in g_async_queue_timeout_pop_unlocked (queue=<optimized 
out>, timeout=timeout@entry=500000) at ../../../glib/gasyncqueue.c:574
        end_time = <optimized out>
        __func__ = "g_async_queue_timeout_pop_unlocked"
#4  0x00007f2c0e7c4eea in g_thread_pool_wait_for_new_task (pool=<optimized 
out>) at ../../../glib/gthreadpool.c:278
        task = <optimized out>
        task = <optimized out>
        pool = <optimized out>
#5  g_thread_pool_thread_proxy (data=<optimized out>) at 
../../../glib/gthreadpool.c:343
        task = <optimized out>
        pool = <optimized out>
#6  0x00007f2c0e7c452d in g_thread_proxy (data=0x56541f606860) at 
../../../glib/gthread.c:807
        thread = 0x56541f606860
        __func__ = "g_thread_proxy"
#7  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139824951961344, 
-8424850421097057240, 140728289398926, 140728289398927, 139824951958592, 
139824951961344, 8449872216462832680, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#8  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 23 (Thread 0x7f2b7b7fe700 (LWP 414317)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7f2b7b7fd960, 
clockid=<optimized out>, expected=0, futex_word=0x7f2b90364060) at 
../sysdeps/unix/sysv/linux/futex-internal.h:208
        __ret = -516
        __ret = <optimized out>
        oldtype = 0
        err = <optimized out>
        spin = 0
        buffer = {__routine = 0x7f2c0b8a0370 <__condvar_cleanup_waiting>, __arg 
= 0x7f2b7b7fd8e0, __canceltype = 2071976208, __prev = 0x0}
        cbuffer = {wseq = 24, cond = 0x7f2b90364038, mutex = 0x7f2b90364010, 
private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        maxspin = 0
        signals = <optimized out>
        result = 0
        wseq = 24
        seq = 12
        private = 0
        flags = <optimized out>
        clockid = <optimized out>
#1  __pthread_cond_wait_common (abstime=0x7f2b7b7fd960, clockid=<optimized 
out>, mutex=0x7f2b90364010, cond=0x7f2b90364038) at pthread_cond_wait.c:520
        spin = 0
        buffer = {__routine = 0x7f2c0b8a0370 <__condvar_cleanup_waiting>, __arg 
= 0x7f2b7b7fd8e0, __canceltype = 2071976208, __prev = 0x0}
        cbuffer = {wseq = 24, cond = 0x7f2b90364038, mutex = 0x7f2b90364010, 
private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        maxspin = 0
        signals = <optimized out>
        result = 0
        wseq = 24
        seq = 12
        private = 0
        flags = <optimized out>
        clockid = <optimized out>
#2  __pthread_cond_timedwait (cond=0x7f2b90364038, mutex=0x7f2b90364010, 
abstime=0x7f2b7b7fd960) at pthread_cond_wait.c:656
        flags = <optimized out>
        clockid = <optimized out>
#3  0x00007f2c0e00ef3b in WTF::ThreadCondition::timedWait(WTF::Mutex&, 
WTF::WallTime) () at ../Source/WTF/wtf/posix/ThreadingPOSIX.cpp:542
#4  0x00007f2c0dfbc0a3 in WTF::ParkingLot::parkConditionallyImpl(void const*, 
WTF::ScopedLambda<bool ()> const&, WTF::ScopedLambda<void ()> const&, 
WTF::TimeWithDynamicClockType const&) () at ../Source/WTF/wtf/ParkingLot.cpp:597
#5  0x00007f2c0dfa80b6 in 
WTF::ParkingLot::parkConditionally<WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&,
 WTF::TimeWithDynamicClockType const&)::{lambda()#1}, 
WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&, WTF::TimeWithDynamicClockType 
const&)::{lambda()#2}>(void const*, 
WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&, WTF::TimeWithDynamicClockType 
const&)::{lambda()#1} const&, WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&, 
WTF::TimeWithDynamicClockType const&)::{lambda()#2} const&, 
WTF::TimeWithDynamicClockType const&) () at ../Source/WTF/wtf/ParkingLot.h:82
#6  WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&, 
WTF::TimeWithDynamicClockType const&) () at ../Source/WTF/wtf/Condition.h:76
#7  WTF::Condition::waitFor<WTF::Lock>(WTF::Lock&, WTF::Seconds) () at 
../Source/WTF/wtf/Condition.h:116
#8  operator() () at ../Source/WTF/wtf/AutomaticThread.cpp:208
#9  call() () at ../Source/WTF/wtf/Function.h:52
#10 0x00007f2c0dfc0004 in WTF::Function<void ()>::operator()() const () at 
../Source/WTF/wtf/Function.h:84
#11 WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) () at 
../Source/WTF/wtf/Threading.cpp:148
#12 0x00007f2c0e00e779 in wtfThreadEntryPoint() () at 
../Source/WTF/wtf/posix/ThreadingPOSIX.cpp:200
#13 0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139824732301056, 
-8424850421097057240, 140728289399870, 140728289399871, 139824732298304, 
139824732301056, 8449348640622097448, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#14 0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 22 (Thread 0x7f2b4baff700 (LWP 409926)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f2c0e7e7b02 in g_cond_wait_until (cond=cond@entry=0x56541f1717c8, 
mutex=mutex@entry=0x56541f1717c0, end_time=end_time@entry=1851049601735) at 
../../../glib/gthread-posix.c:1588
        now = {tv_sec = 1851049, tv_nsec = 101735991}
        span = {tv_sec = 0, tv_nsec = 499999009}
        sampled = 0
        res = <optimized out>
        success = <optimized out>
#2  0x00007f2c0e76c5d1 in g_async_queue_pop_intern_unlocked 
(queue=0x56541f1717c0, wait=wait@entry=1, end_time=1851049601735) at 
../../../glib/gasyncqueue.c:422
        retval = <optimized out>
        __func__ = "g_async_queue_pop_intern_unlocked"
#3  0x00007f2c0e76cc3d in g_async_queue_timeout_pop_unlocked (queue=<optimized 
out>, timeout=timeout@entry=500000) at ../../../glib/gasyncqueue.c:574
        end_time = <optimized out>
        __func__ = "g_async_queue_timeout_pop_unlocked"
#4  0x00007f2c0e7c4eea in g_thread_pool_wait_for_new_task (pool=<optimized 
out>) at ../../../glib/gthreadpool.c:278
        task = <optimized out>
        task = <optimized out>
        pool = <optimized out>
#5  g_thread_pool_thread_proxy (data=<optimized out>) at 
../../../glib/gthreadpool.c:343
        task = <optimized out>
        pool = <optimized out>
#6  0x00007f2c0e7c452d in g_thread_proxy (data=0x56541f353c00) at 
../../../glib/gthread.c:807
        thread = 0x56541f353c00
        __func__ = "g_thread_proxy"
#7  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139823930144512, 
-8424850421097057240, 139824085325582, 139824085325583, 139823930141760, 
139823930144512, 8449452680299263016, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#8  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 21 (Thread 0x7f2b4b2fe700 (LWP 409928)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f2c0e7e7b02 in g_cond_wait_until (cond=cond@entry=0x56541f1717c8, 
mutex=mutex@entry=0x56541f1717c0, end_time=end_time@entry=1851049600428) at 
../../../glib/gthread-posix.c:1588
        now = {tv_sec = 1851049, tv_nsec = 100429365}
        span = {tv_sec = 0, tv_nsec = 499998635}
        sampled = 0
        res = <optimized out>
        success = <optimized out>
#2  0x00007f2c0e76c5d1 in g_async_queue_pop_intern_unlocked 
(queue=0x56541f1717c0, wait=wait@entry=1, end_time=1851049600428) at 
../../../glib/gasyncqueue.c:422
        retval = <optimized out>
        __func__ = "g_async_queue_pop_intern_unlocked"
#3  0x00007f2c0e76cc3d in g_async_queue_timeout_pop_unlocked (queue=<optimized 
out>, timeout=timeout@entry=500000) at ../../../glib/gasyncqueue.c:574
        end_time = <optimized out>
        __func__ = "g_async_queue_timeout_pop_unlocked"
#4  0x00007f2c0e7c4eea in g_thread_pool_wait_for_new_task (pool=<optimized 
out>) at ../../../glib/gthreadpool.c:278
        task = <optimized out>
        task = <optimized out>
        pool = <optimized out>
#5  g_thread_pool_thread_proxy (data=<optimized out>) at 
../../../glib/gthreadpool.c:343
        task = <optimized out>
        pool = <optimized out>
#6  0x00007f2c0e7c452d in g_thread_proxy (data=0x7f2b4000c9e0) at 
../../../glib/gthread.c:807
        thread = 0x7f2b4000c9e0
        __func__ = "g_thread_proxy"
#7  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139823921751808, 
-8424850421097057240, 139823930132846, 139823930132847, 139823921749056, 
139823921751808, 8449453781421503528, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#8  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 20 (Thread 0x7f2b567fc700 (LWP 409890)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f2c0e7e7b02 in g_cond_wait_until (cond=cond@entry=0x56541f1717c8, 
mutex=mutex@entry=0x56541f1717c0, end_time=end_time@entry=1851049595866) at 
../../../glib/gthread-posix.c:1588
        now = {tv_sec = 1851049, tv_nsec = 95867374}
        span = {tv_sec = 0, tv_nsec = 499998626}
        sampled = 0
        res = <optimized out>
        success = <optimized out>
#2  0x00007f2c0e76c5d1 in g_async_queue_pop_intern_unlocked 
(queue=0x56541f1717c0, wait=wait@entry=1, end_time=1851049595866) at 
../../../glib/gasyncqueue.c:422
        retval = <optimized out>
        __func__ = "g_async_queue_pop_intern_unlocked"
#3  0x00007f2c0e76cc3d in g_async_queue_timeout_pop_unlocked (queue=<optimized 
out>, timeout=timeout@entry=500000) at ../../../glib/gasyncqueue.c:574
        end_time = <optimized out>
        __func__ = "g_async_queue_timeout_pop_unlocked"
#4  0x00007f2c0e7c4eea in g_thread_pool_wait_for_new_task (pool=<optimized 
out>) at ../../../glib/gthreadpool.c:278
        task = <optimized out>
        task = <optimized out>
        pool = <optimized out>
#5  g_thread_pool_thread_proxy (data=<optimized out>) at 
../../../glib/gthreadpool.c:343
        task = <optimized out>
        pool = <optimized out>
#6  0x00007f2c0e7c452d in g_thread_proxy (data=0x56541f643460) at 
../../../glib/gthread.c:807
        thread = 0x56541f643460
        __func__ = "g_thread_proxy"
#7  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139824111535872, 
-8424850421097057240, 139824422959678, 139824422959679, 139824111533120, 
139824111535872, 8449394821184205864, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#8  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 19 (Thread 0x7f2b54eff700 (LWP 409923)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f2c0e7e7b02 in g_cond_wait_until (cond=cond@entry=0x56541f1717c8, 
mutex=mutex@entry=0x56541f1717c0, end_time=end_time@entry=1851049602192) at 
../../../glib/gthread-posix.c:1588
        now = {tv_sec = 1851049, tv_nsec = 102192428}
        span = {tv_sec = 0, tv_nsec = 499999572}
        sampled = 0
        res = <optimized out>
        success = <optimized out>
#2  0x00007f2c0e76c5d1 in g_async_queue_pop_intern_unlocked 
(queue=0x56541f1717c0, wait=wait@entry=1, end_time=1851049602192) at 
../../../glib/gasyncqueue.c:422
        retval = <optimized out>
        __func__ = "g_async_queue_pop_intern_unlocked"
#3  0x00007f2c0e76cc3d in g_async_queue_timeout_pop_unlocked (queue=<optimized 
out>, timeout=timeout@entry=500000) at ../../../glib/gasyncqueue.c:574
        end_time = <optimized out>
        __func__ = "g_async_queue_timeout_pop_unlocked"
#4  0x00007f2c0e7c4eea in g_thread_pool_wait_for_new_task (pool=<optimized 
out>) at ../../../glib/gthreadpool.c:278
        task = <optimized out>
        task = <optimized out>
        pool = <optimized out>
#5  g_thread_pool_thread_proxy (data=<optimized out>) at 
../../../glib/gthreadpool.c:343
        task = <optimized out>
        pool = <optimized out>
#6  0x00007f2c0e7c452d in g_thread_proxy (data=0x56541f353d80) at 
../../../glib/gthread.c:807
        thread = 0x56541f353d80
        __func__ = "g_thread_proxy"
#7  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139824085333760, 
-8424850421097057240, 139824472251006, 139824472251007, 139824085331008, 
139824085333760, 8449389458380665896, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#8  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 18 (Thread 0x7f2b690fe700 (LWP 409881)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f2c0e7e7b02 in g_cond_wait_until (cond=cond@entry=0x56541f1717c8, 
mutex=mutex@entry=0x56541f1717c0, end_time=end_time@entry=1851049597089) at 
../../../glib/gthread-posix.c:1588
        now = {tv_sec = 1851049, tv_nsec = 97089925}
        span = {tv_sec = 0, tv_nsec = 499999075}
        sampled = 0
        res = <optimized out>
        success = <optimized out>
#2  0x00007f2c0e76c5d1 in g_async_queue_pop_intern_unlocked 
(queue=0x56541f1717c0, wait=wait@entry=1, end_time=1851049597089) at 
../../../glib/gasyncqueue.c:422
        retval = <optimized out>
        __func__ = "g_async_queue_pop_intern_unlocked"
#3  0x00007f2c0e76cc3d in g_async_queue_timeout_pop_unlocked (queue=<optimized 
out>, timeout=timeout@entry=500000) at ../../../glib/gasyncqueue.c:574
        end_time = <optimized out>
        __func__ = "g_async_queue_timeout_pop_unlocked"
#4  0x00007f2c0e7c4eea in g_thread_pool_wait_for_new_task (pool=<optimized 
out>) at ../../../glib/gthreadpool.c:278
        task = <optimized out>
        task = <optimized out>
        pool = <optimized out>
#5  g_thread_pool_thread_proxy (data=<optimized out>) at 
../../../glib/gthreadpool.c:343
        task = <optimized out>
        pool = <optimized out>
#6  0x00007f2c0e7c452d in g_thread_proxy (data=0x56541f343760) at 
../../../glib/gthread.c:807
        thread = 0x56541f343760
        __func__ = "g_thread_proxy"
#7  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139824422971136, 
-8424850421097057240, 139824431355662, 139824431355663, 139824422968384, 
139824422971136, 8449378739752907816, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#8  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 17 (Thread 0x7f2b8917b700 (LWP 414319)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7f2b8917a960, 
clockid=<optimized out>, expected=0, futex_word=0x7f2b90346060) at 
../sysdeps/unix/sysv/linux/futex-internal.h:208
        __ret = -516
        __ret = <optimized out>
        oldtype = 0
        err = <optimized out>
        spin = 0
        buffer = {__routine = 0x7f2c0b8a0370 <__condvar_cleanup_waiting>, __arg 
= 0x7f2b8917a8e0, __canceltype = -1994938096, __prev = 0x0}
        cbuffer = {wseq = 32, cond = 0x7f2b90346038, mutex = 0x7f2b90346010, 
private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        maxspin = 0
        signals = <optimized out>
        result = 0
        wseq = 32
        seq = 16
        private = 0
        flags = <optimized out>
        clockid = <optimized out>
#1  __pthread_cond_wait_common (abstime=0x7f2b8917a960, clockid=<optimized 
out>, mutex=0x7f2b90346010, cond=0x7f2b90346038) at pthread_cond_wait.c:520
        spin = 0
        buffer = {__routine = 0x7f2c0b8a0370 <__condvar_cleanup_waiting>, __arg 
= 0x7f2b8917a8e0, __canceltype = -1994938096, __prev = 0x0}
        cbuffer = {wseq = 32, cond = 0x7f2b90346038, mutex = 0x7f2b90346010, 
private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        maxspin = 0
        signals = <optimized out>
        result = 0
        wseq = 32
        seq = 16
        private = 0
        flags = <optimized out>
        clockid = <optimized out>
#2  __pthread_cond_timedwait (cond=0x7f2b90346038, mutex=0x7f2b90346010, 
abstime=0x7f2b8917a960) at pthread_cond_wait.c:656
        flags = <optimized out>
        clockid = <optimized out>
#3  0x00007f2c0e00ef3b in WTF::ThreadCondition::timedWait(WTF::Mutex&, 
WTF::WallTime) () at ../Source/WTF/wtf/posix/ThreadingPOSIX.cpp:542
#4  0x00007f2c0dfbc0a3 in WTF::ParkingLot::parkConditionallyImpl(void const*, 
WTF::ScopedLambda<bool ()> const&, WTF::ScopedLambda<void ()> const&, 
WTF::TimeWithDynamicClockType const&) () at ../Source/WTF/wtf/ParkingLot.cpp:597
#5  0x00007f2c0dfa80b6 in 
WTF::ParkingLot::parkConditionally<WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&,
 WTF::TimeWithDynamicClockType const&)::{lambda()#1}, 
WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&, WTF::TimeWithDynamicClockType 
const&)::{lambda()#2}>(void const*, 
WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&, WTF::TimeWithDynamicClockType 
const&)::{lambda()#1} const&, WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&, 
WTF::TimeWithDynamicClockType const&)::{lambda()#2} const&, 
WTF::TimeWithDynamicClockType const&) () at ../Source/WTF/wtf/ParkingLot.h:82
#6  WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&, 
WTF::TimeWithDynamicClockType const&) () at ../Source/WTF/wtf/Condition.h:76
#7  WTF::Condition::waitFor<WTF::Lock>(WTF::Lock&, WTF::Seconds) () at 
../Source/WTF/wtf/Condition.h:116
#8  operator() () at ../Source/WTF/wtf/AutomaticThread.cpp:208
#9  call() () at ../Source/WTF/wtf/Function.h:52
#10 0x00007f2c0dfc0004 in WTF::Function<void ()>::operator()() const () at 
../Source/WTF/wtf/Function.h:84
#11 WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) () at 
../Source/WTF/wtf/Threading.cpp:148
#12 0x00007f2c0e00e779 in wtfThreadEntryPoint() () at 
../Source/WTF/wtf/posix/ThreadingPOSIX.cpp:200
#13 0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139824960354048, 
-8424850421097057240, 140728289399870, 140728289399871, 139824960351296, 
139824960354048, 8449871115340592168, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#14 0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 16 (Thread 0x7f2b6bfff700 (LWP 409773)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f2c0e7e7b02 in g_cond_wait_until (cond=cond@entry=0x56541f1717c8, 
mutex=mutex@entry=0x56541f1717c0, end_time=end_time@entry=1851049602293) at 
../../../glib/gthread-posix.c:1588
        now = {tv_sec = 1851049, tv_nsec = 102293522}
        span = {tv_sec = 0, tv_nsec = 499999478}
        sampled = 0
        res = <optimized out>
        success = <optimized out>
#2  0x00007f2c0e76c5d1 in g_async_queue_pop_intern_unlocked 
(queue=0x56541f1717c0, wait=wait@entry=1, end_time=1851049602293) at 
../../../glib/gasyncqueue.c:422
        retval = <optimized out>
        __func__ = "g_async_queue_pop_intern_unlocked"
#3  0x00007f2c0e76cc3d in g_async_queue_timeout_pop_unlocked (queue=<optimized 
out>, timeout=timeout@entry=500000) at ../../../glib/gasyncqueue.c:574
        end_time = <optimized out>
        __func__ = "g_async_queue_timeout_pop_unlocked"
#4  0x00007f2c0e7c4eea in g_thread_pool_wait_for_new_task (pool=<optimized 
out>) at ../../../glib/gthreadpool.c:278
        task = <optimized out>
        task = <optimized out>
        pool = <optimized out>
#5  g_thread_pool_thread_proxy (data=<optimized out>) at 
../../../glib/gthreadpool.c:343
        task = <optimized out>
        pool = <optimized out>
#6  0x00007f2c0e7c452d in g_thread_proxy (data=0x7f2bf80021e0) at 
../../../glib/gthread.c:807
        thread = 0x7f2bf80021e0
        __func__ = "g_thread_proxy"
#7  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139824472258304, 
-8424850421097057240, 140728289398926, 140728289398927, 139824472255552, 
139824472258304, 8449382723871945768, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#8  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 15 (Thread 0x7f2b7bfff700 (LWP 414318)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7f2b7bffe960, 
clockid=<optimized out>, expected=0, futex_word=0x7f2b90331060) at 
../sysdeps/unix/sysv/linux/futex-internal.h:208
        __ret = -516
        __ret = <optimized out>
        oldtype = 0
        err = <optimized out>
        spin = 0
        buffer = {__routine = 0x7f2c0b8a0370 <__condvar_cleanup_waiting>, __arg 
= 0x7f2b7bffe8e0, __canceltype = 2080368912, __prev = 0x0}
        cbuffer = {wseq = 16, cond = 0x7f2b90331038, mutex = 0x7f2b90331010, 
private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        maxspin = 0
        signals = <optimized out>
        result = 0
        wseq = 16
        seq = 8
        private = 0
        flags = <optimized out>
        clockid = <optimized out>
#1  __pthread_cond_wait_common (abstime=0x7f2b7bffe960, clockid=<optimized 
out>, mutex=0x7f2b90331010, cond=0x7f2b90331038) at pthread_cond_wait.c:520
        spin = 0
        buffer = {__routine = 0x7f2c0b8a0370 <__condvar_cleanup_waiting>, __arg 
= 0x7f2b7bffe8e0, __canceltype = 2080368912, __prev = 0x0}
        cbuffer = {wseq = 16, cond = 0x7f2b90331038, mutex = 0x7f2b90331010, 
private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        maxspin = 0
        signals = <optimized out>
        result = 0
        wseq = 16
        seq = 8
        private = 0
        flags = <optimized out>
        clockid = <optimized out>
#2  __pthread_cond_timedwait (cond=0x7f2b90331038, mutex=0x7f2b90331010, 
abstime=0x7f2b7bffe960) at pthread_cond_wait.c:656
        flags = <optimized out>
        clockid = <optimized out>
#3  0x00007f2c0e00ef3b in WTF::ThreadCondition::timedWait(WTF::Mutex&, 
WTF::WallTime) () at ../Source/WTF/wtf/posix/ThreadingPOSIX.cpp:542
#4  0x00007f2c0dfbc0a3 in WTF::ParkingLot::parkConditionallyImpl(void const*, 
WTF::ScopedLambda<bool ()> const&, WTF::ScopedLambda<void ()> const&, 
WTF::TimeWithDynamicClockType const&) () at ../Source/WTF/wtf/ParkingLot.cpp:597
#5  0x00007f2c0dfa80b6 in 
WTF::ParkingLot::parkConditionally<WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&,
 WTF::TimeWithDynamicClockType const&)::{lambda()#1}, 
WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&, WTF::TimeWithDynamicClockType 
const&)::{lambda()#2}>(void const*, 
WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&, WTF::TimeWithDynamicClockType 
const&)::{lambda()#1} const&, WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&, 
WTF::TimeWithDynamicClockType const&)::{lambda()#2} const&, 
WTF::TimeWithDynamicClockType const&) () at ../Source/WTF/wtf/ParkingLot.h:82
#6  WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&, 
WTF::TimeWithDynamicClockType const&) () at ../Source/WTF/wtf/Condition.h:76
#7  WTF::Condition::waitFor<WTF::Lock>(WTF::Lock&, WTF::Seconds) () at 
../Source/WTF/wtf/Condition.h:116
#8  operator() () at ../Source/WTF/wtf/AutomaticThread.cpp:208
#9  call() () at ../Source/WTF/wtf/Function.h:52
#10 0x00007f2c0dfc0004 in WTF::Function<void ()>::operator()() const () at 
../Source/WTF/wtf/Function.h:84
#11 WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) () at 
../Source/WTF/wtf/Threading.cpp:148
#12 0x00007f2c0e00e779 in wtfThreadEntryPoint() () at 
../Source/WTF/wtf/posix/ThreadingPOSIX.cpp:200
#13 0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139824740693760, 
-8424850421097057240, 140728289399870, 140728289399871, 139824740691008, 
139824740693760, 8449347539499856936, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#14 0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 14 (Thread 0x7f2b8a17d700 (LWP 4177108)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x56541f1ebcf8) at 
../sysdeps/unix/sysv/linux/futex-internal.h:80
        __ret = -512
        oldtype = 0
        err = <optimized out>
        spin = 0
        buffer = {__routine = 0x7f2c0b8a0370 <__condvar_cleanup_waiting>, __arg 
= 0x7f2b8a17c9f0, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 6, cond = 0x56541f1ebcd0, mutex = 0x56541f1ebca8, 
private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        signals = <optimized out>
        result = 0
        wseq = 6
        seq = 3
        private = 0
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x56541f1ebca8, 
cond=0x56541f1ebcd0) at pthread_cond_wait.c:508
        spin = 0
        buffer = {__routine = 0x7f2c0b8a0370 <__condvar_cleanup_waiting>, __arg 
= 0x7f2b8a17c9f0, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 6, cond = 0x56541f1ebcd0, mutex = 0x56541f1ebca8, 
private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        signals = <optimized out>
        result = 0
        wseq = 6
        seq = 3
        private = 0
#2  __pthread_cond_wait (cond=0x56541f1ebcd0, mutex=0x56541f1ebca8) at 
pthread_cond_wait.c:638
#3  0x00007f2bad51255b in cnd_wait (mtx=0x56541f1ebca8, cond=0x56541f1ebcd0) at 
../include/c11/threads_posix.h:155
        job = <optimized out>
        queue = 0x56541f1ebc70
        thread_index = 1
#4  util_queue_thread_func (input=input@entry=0x56541f0f3030) at 
../src/util/u_queue.c:275
        job = <optimized out>
        queue = 0x56541f1ebc70
        thread_index = 1
#5  0x00007f2bad512177 in impl_thrd_routine (p=<optimized out>) at 
../include/c11/threads_posix.h:87
        pack = {func = 0x7f2bad5124e0 <util_queue_thread_func>, arg = 
0x56541f0f3030}
#6  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139824977139456, 
-8424850421097057240, 140728289396254, 140728289396255, 139824977136704, 
139824977139456, 8449877711336617000, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#7  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 13 (Thread 0x7f2b9197c700 (LWP 4177110)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x56541f1ebcf8) at 
../sysdeps/unix/sysv/linux/futex-internal.h:80
        __ret = -512
        oldtype = 0
        err = <optimized out>
        spin = 0
        buffer = {__routine = 0x7f2c0b8a0370 <__condvar_cleanup_waiting>, __arg 
= 0x7f2b9197b9f0, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 4, cond = 0x56541f1ebcd0, mutex = 0x56541f1ebca8, 
private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        signals = <optimized out>
        result = 0
        wseq = 4
        seq = 2
        private = 0
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x56541f1ebca8, 
cond=0x56541f1ebcd0) at pthread_cond_wait.c:508
        spin = 0
        buffer = {__routine = 0x7f2c0b8a0370 <__condvar_cleanup_waiting>, __arg 
= 0x7f2b9197b9f0, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 4, cond = 0x56541f1ebcd0, mutex = 0x56541f1ebca8, 
private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        signals = <optimized out>
        result = 0
        wseq = 4
        seq = 2
        private = 0
#2  __pthread_cond_wait (cond=0x56541f1ebcd0, mutex=0x56541f1ebca8) at 
pthread_cond_wait.c:638
#3  0x00007f2bad51255b in cnd_wait (mtx=0x56541f1ebca8, cond=0x56541f1ebcd0) at 
../include/c11/threads_posix.h:155
        job = <optimized out>
        queue = 0x56541f1ebc70
        thread_index = 3
#4  util_queue_thread_func (input=input@entry=0x56541f0f3330) at 
../src/util/u_queue.c:275
        job = <optimized out>
        queue = 0x56541f1ebc70
        thread_index = 3
#5  0x00007f2bad512177 in impl_thrd_routine (p=<optimized out>) at 
../include/c11/threads_posix.h:87
        pack = {func = 0x7f2bad5124e0 <util_queue_thread_func>, arg = 
0x56541f0f3330}
#6  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139825102964480, 
-8424850421097057240, 140728289396254, 140728289396255, 139825102961728, 
139825102964480, 8449817239807702056, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#7  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 12 (Thread 0x7f2bafffd700 (LWP 4176706)):
#0  0x00007f2c0f6fcb7f in __GI___poll (fds=0x7f2ba0002a90, nfds=1, timeout=-1) 
at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007f2c0e79b7fe in g_main_context_poll (priority=<optimized out>, 
n_fds=1, fds=0x7f2ba0002a90, timeout=<optimized out>, context=0x7f2ba0000b60) 
at ../../../glib/gmain.c:4346
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f2c0e7ab1d0 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0x7f2ba0002a90
#2  g_main_context_iterate (context=0x7f2ba0000b60, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4042
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0x7f2ba0002a90
#3  0x00007f2c0e79bb63 in g_main_loop_run (loop=0x7f2ba0001d40) at 
../../../glib/gmain.c:4241
        __func__ = "g_main_loop_run"
#4  0x00007f2c0e00d298 in WTF::RunLoop::run() () at 
../Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#5  0x00007f2c0dfc0004 in WTF::Function<void ()>::operator()() const () at 
../Source/WTF/wtf/Function.h:84
#6  WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) () at 
../Source/WTF/wtf/Threading.cpp:148
#7  0x00007f2c0e00e779 in wtfThreadEntryPoint() () at 
../Source/WTF/wtf/posix/ThreadingPOSIX.cpp:200
#8  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139825613100800, 
-8424850421097057240, 140728289403710, 140728289403711, 139825613098048, 
139825613100800, 8449796141317731368, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#9  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 11 (Thread 0x7f2baeffb700 (LWP 4177101)):
#0  0x00007f2c0f6fcb7f in __GI___poll (fds=0x7f2b9c001c00, nfds=2, timeout=-1) 
at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007f2c0e79b7fe in g_main_context_poll (priority=<optimized out>, 
n_fds=2, fds=0x7f2b9c001c00, timeout=<optimized out>, context=0x7f2b9c000b60) 
at ../../../glib/gmain.c:4346
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f2c0e7ab1d0 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = <optimized out>
        fds = 0x7f2b9c001c00
#2  g_main_context_iterate (context=0x7f2b9c000b60, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4042
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = <optimized out>
        fds = 0x7f2b9c001c00
#3  0x00007f2c0e79bb63 in g_main_loop_run (loop=0x7f2b9c001b10) at 
../../../glib/gmain.c:4241
        __func__ = "g_main_loop_run"
#4  0x00007f2c0e00d298 in WTF::RunLoop::run() () at 
../Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#5  0x00007f2c0dfc0004 in WTF::Function<void ()>::operator()() const () at 
../Source/WTF/wtf/Function.h:84
#6  WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) () at 
../Source/WTF/wtf/Threading.cpp:148
#7  0x00007f2c0e00e779 in wtfThreadEntryPoint() () at 
../Source/WTF/wtf/posix/ThreadingPOSIX.cpp:200
#8  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139825596315392, 
-8424850421097057240, 140728289400398, 140728289400399, 139825596312640, 
139825596315392, 8449798341414728744, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#9  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 10 (Thread 0x7f2c057ff700 (LWP 4176704)):
#0  0x00007f2c0f6fcb7f in __GI___poll (fds=0x7f2bf40026a0, nfds=1, timeout=-1) 
at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007f2c0e79b7fe in g_main_context_poll (priority=<optimized out>, 
n_fds=1, fds=0x7f2bf40026a0, timeout=<optimized out>, context=0x7f2bf4000b60) 
at ../../../glib/gmain.c:4346
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f2c0e7ab1d0 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0x7f2bf40026a0
#2  g_main_context_iterate (context=0x7f2bf4000b60, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4042
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0x7f2bf40026a0
#3  0x00007f2c0e79bb63 in g_main_loop_run (loop=0x7f2bf4001480) at 
../../../glib/gmain.c:4241
        __func__ = "g_main_loop_run"
#4  0x00007f2c0e00d298 in WTF::RunLoop::run() () at 
../Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#5  0x00007f2c0dfc0004 in WTF::Function<void ()>::operator()() const () at 
../Source/WTF/wtf/Function.h:84
#6  WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) () at 
../Source/WTF/wtf/Threading.cpp:148
#7  0x00007f2c0e00e779 in wtfThreadEntryPoint() () at 
../Source/WTF/wtf/posix/ThreadingPOSIX.cpp:200
#8  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139827047560960, 
-8424850421097057240, 140728289403710, 140728289403711, 139827047558208, 
139827047560960, 8452378893057635368, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#9  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 9 (Thread 0x7f2b9217d700 (LWP 4177109)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x56541f1ebcf8) at 
../sysdeps/unix/sysv/linux/futex-internal.h:80
        __ret = -512
        oldtype = 0
        err = <optimized out>
        spin = 0
        buffer = {__routine = 0x7f2c0b8a0370 <__condvar_cleanup_waiting>, __arg 
= 0x7f2b9217c9f0, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 2, cond = 0x56541f1ebcd0, mutex = 0x56541f1ebca8, 
private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        signals = <optimized out>
        result = 0
        wseq = 2
        seq = 1
        private = 0
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x56541f1ebca8, 
cond=0x56541f1ebcd0) at pthread_cond_wait.c:508
        spin = 0
        buffer = {__routine = 0x7f2c0b8a0370 <__condvar_cleanup_waiting>, __arg 
= 0x7f2b9217c9f0, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 2, cond = 0x56541f1ebcd0, mutex = 0x56541f1ebca8, 
private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        signals = <optimized out>
        result = 0
        wseq = 2
        seq = 1
        private = 0
#2  __pthread_cond_wait (cond=0x56541f1ebcd0, mutex=0x56541f1ebca8) at 
pthread_cond_wait.c:638
#3  0x00007f2bad51255b in cnd_wait (mtx=0x56541f1ebca8, cond=0x56541f1ebcd0) at 
../include/c11/threads_posix.h:155
        job = <optimized out>
        queue = 0x56541f1ebc70
        thread_index = 2
#4  util_queue_thread_func (input=input@entry=0x56541f0ef670) at 
../src/util/u_queue.c:275
        job = <optimized out>
        queue = 0x56541f1ebc70
        thread_index = 2
#5  0x00007f2bad512177 in impl_thrd_routine (p=<optimized out>) at 
../include/c11/threads_posix.h:87
        pack = {func = 0x7f2bad5124e0 <util_queue_thread_func>, arg = 
0x56541f0ef670}
#6  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139825111357184, 
-8424850421097057240, 140728289396254, 140728289396255, 139825111354432, 
139825111357184, 8449824934778483752, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#7  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 8 (Thread 0x7f2c04ffe700 (LWP 4176705)):
#0  0x00007f2c0f6fcb7f in __GI___poll (fds=0x7f2ba8002ec0, nfds=1, timeout=-1) 
at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007f2c0e79b7fe in g_main_context_poll (priority=<optimized out>, 
n_fds=1, fds=0x7f2ba8002ec0, timeout=<optimized out>, context=0x7f2ba8000b60) 
at ../../../glib/gmain.c:4346
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f2c0e7ab1d0 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0x7f2ba8002ec0
#2  g_main_context_iterate (context=0x7f2ba8000b60, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4042
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0x7f2ba8002ec0
#3  0x00007f2c0e79bb63 in g_main_loop_run (loop=0x7f2ba8001d40) at 
../../../glib/gmain.c:4241
        __func__ = "g_main_loop_run"
#4  0x00007f2c0e00d298 in WTF::RunLoop::run() () at 
../Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#5  0x00007f2c0dfc0004 in WTF::Function<void ()>::operator()() const () at 
../Source/WTF/wtf/Function.h:84
#6  WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) () at 
../Source/WTF/wtf/Threading.cpp:148
#7  0x00007f2c0e00e779 in wtfThreadEntryPoint() () at 
../Source/WTF/wtf/posix/ThreadingPOSIX.cpp:200
#8  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139827039168256, 
-8424850421097057240, 140728289403710, 140728289403711, 139827039165504, 
139827039168256, 8452379994179875880, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#9  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 7 (Thread 0x7f2baf7fc700 (LWP 4176707)):
#0  0x00007f2c0f6fcb7f in __GI___poll (fds=0x7f2ba4002ec0, nfds=2, timeout=-1) 
at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007f2c0e79b7fe in g_main_context_poll (priority=<optimized out>, 
n_fds=2, fds=0x7f2ba4002ec0, timeout=<optimized out>, context=0x7f2ba4000b60) 
at ../../../glib/gmain.c:4346
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f2c0e7ab1d0 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = <optimized out>
        fds = 0x7f2ba4002ec0
#2  g_main_context_iterate (context=0x7f2ba4000b60, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4042
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 2
        allocated_nfds = <optimized out>
        fds = 0x7f2ba4002ec0
#3  0x00007f2c0e79bb63 in g_main_loop_run (loop=0x7f2ba4001d40) at 
../../../glib/gmain.c:4241
        __func__ = "g_main_loop_run"
#4  0x00007f2c0e00d298 in WTF::RunLoop::run() () at 
../Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#5  0x00007f2c0dfc0004 in WTF::Function<void ()>::operator()() const () at 
../Source/WTF/wtf/Function.h:84
#6  WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) () at 
../Source/WTF/wtf/Threading.cpp:148
#7  0x00007f2c0e00e779 in wtfThreadEntryPoint() () at 
../Source/WTF/wtf/posix/ThreadingPOSIX.cpp:200
#8  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139825604708096, 
-8424850421097057240, 140728289403694, 140728289403695, 139825604705344, 
139825604708096, 8449797242439971880, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#9  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 6 (Thread 0x7f2bacf10700 (LWP 4177107)):
#0  futex_wait_cancelable (private=0, expected=0, futex_word=0x56541f1ebcf8) at 
../sysdeps/unix/sysv/linux/futex-internal.h:80
        __ret = -512
        oldtype = 0
        err = <optimized out>
        spin = 0
        buffer = {__routine = 0x7f2c0b8a0370 <__condvar_cleanup_waiting>, __arg 
= 0x7f2bacf0f9f0, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 0, cond = 0x56541f1ebcd0, mutex = 0x56541f1ebca8, 
private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        signals = <optimized out>
        result = 0
        wseq = 0
        seq = 0
        private = 0
#1  __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=0x56541f1ebca8, 
cond=0x56541f1ebcd0) at pthread_cond_wait.c:508
        spin = 0
        buffer = {__routine = 0x7f2c0b8a0370 <__condvar_cleanup_waiting>, __arg 
= 0x7f2bacf0f9f0, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 0, cond = 0x56541f1ebcd0, mutex = 0x56541f1ebca8, 
private = 0}
        err = <optimized out>
        g = 0
        flags = <optimized out>
        g1_start = <optimized out>
        signals = <optimized out>
        result = 0
        wseq = 0
        seq = 0
        private = 0
#2  __pthread_cond_wait (cond=0x56541f1ebcd0, mutex=0x56541f1ebca8) at 
pthread_cond_wait.c:638
#3  0x00007f2bad51255b in cnd_wait (mtx=0x56541f1ebca8, cond=0x56541f1ebcd0) at 
../include/c11/threads_posix.h:155
        job = <optimized out>
        queue = 0x56541f1ebc70
        thread_index = 0
#4  util_queue_thread_func (input=input@entry=0x56541f0ef4e0) at 
../src/util/u_queue.c:275
        job = <optimized out>
        queue = 0x56541f1ebc70
        thread_index = 0
#5  0x00007f2bad512177 in impl_thrd_routine (p=<optimized out>) at 
../include/c11/threads_posix.h:87
        pack = {func = 0x7f2bad5124e0 <util_queue_thread_func>, arg = 
0x56541f0ef4e0}
#6  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139825561798400, 
-8424850421097057240, 140728289396254, 140728289396255, 139825561795648, 
139825561798400, 8449793915987801128, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#7  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 5 (Thread 0x7f2c06a2e700 (LWP 4176691)):
#0  0x00007f2c0f6fcb7f in __GI___poll (fds=0x7f2bf800ef90, nfds=4, timeout=-1) 
at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007f2c0e79b7fe in g_main_context_poll (priority=<optimized out>, 
n_fds=4, fds=0x7f2bf800ef90, timeout=<optimized out>, context=0x7f2bf800c2e0) 
at ../../../glib/gmain.c:4346
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f2c0e7ab1d0 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 4
        allocated_nfds = <optimized out>
        fds = 0x7f2bf800ef90
#2  g_main_context_iterate (context=0x7f2bf800c2e0, block=block@entry=1, 
dispatch=dispatch@entry=1, self=<optimized out>) at ../../../glib/gmain.c:4042
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 4
        allocated_nfds = <optimized out>
        fds = 0x7f2bf800ef90
#3  0x00007f2c0e79bb63 in g_main_loop_run (loop=0x7f2bf800c3d0) at 
../../../glib/gmain.c:4241
        __func__ = "g_main_loop_run"
#4  0x00007f2c0e9e9f56 in gdbus_shared_thread_func (user_data=0x7f2bf800c2b0) 
at ../../../gio/gdbusprivate.c:279
        data = 0x7f2bf800c2b0
#5  0x00007f2c0e7c452d in g_thread_proxy (data=0x7f2bf8002000) at 
../../../glib/gthread.c:807
        thread = 0x7f2bf8002000
        __func__ = "g_thread_proxy"
#6  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139827066627840, 
-8424850421097057240, 139827085089038, 139827085089039, 139827066625088, 
139827066627840, 8452383936959853608, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#7  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 4 (Thread 0x7f2c0734f700 (LWP 4176688)):
#0  0x00007f2c0f6fcb7f in __GI___poll (fds=0x56541f0cc030, nfds=1, timeout=-1) 
at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007f2c0e79b7fe in g_main_context_poll (priority=<optimized out>, 
n_fds=1, fds=0x56541f0cc030, timeout=<optimized out>, context=0x56541f0cc190) 
at ../../../glib/gmain.c:4346
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f2c0e7ab1d0 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0x56541f0cc030
#2  g_main_context_iterate (context=context@entry=0x56541f0cc190, 
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at 
../../../glib/gmain.c:4042
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0x56541f0cc030
#3  0x00007f2c0e79b91f in g_main_context_iteration 
(context=context@entry=0x56541f0cc190, may_block=may_block@entry=1) at 
../../../glib/gmain.c:4108
        retval = <optimized out>
#4  0x00007f2c12b9ad8d in dconf_gdbus_worker_thread (user_data=0x56541f0cc190) 
at ../gdbus/dconf-gdbus-thread.c:82
        context = 0x56541f0cc190
#5  0x00007f2c0e7c452d in g_thread_proxy (data=0x56541f0cf180) at 
../../../glib/gthread.c:807
        thread = 0x56541f0cf180
        __func__ = "g_thread_proxy"
#6  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139827076200192, 
-8424850421097057240, 140728289402526, 140728289402527, 139827076197440, 
139827076200192, 8452382681218790440, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#7  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 3 (Thread 0x7f2c06132700 (LWP 4176703)):
#0  futex_abstimed_wait_cancelable (private=0, abstime=0x7f2c06131af0, 
clockid=<optimized out>, expected=0, futex_word=0x7f2c0e3557cc 
<bmalloc::StaticPerProcessStorageTraits<bmalloc::Scavenger>::Storage::s_memory+76>)
 at ../sysdeps/unix/sysv/linux/futex-internal.h:208
        __ret = -516
        __ret = <optimized out>
        oldtype = 0
        err = <optimized out>
        spin = 0
        buffer = {__routine = 0x7f2c0b8a0370 <__condvar_cleanup_waiting>, __arg 
= 0x7f2c06131a50, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 2093, cond = 0x7f2c0e3557a0 
<bmalloc::StaticPerProcessStorageTraits<bmalloc::Scavenger>::Storage::s_memory+32>,
 mutex = 0x56541f1b75d0, private = 0}
        err = <optimized out>
        g = 1
        flags = <optimized out>
        g1_start = <optimized out>
        maxspin = 0
        signals = <optimized out>
        result = 0
        wseq = 2093
        seq = 1046
        private = 0
        flags = <optimized out>
        clockid = <optimized out>
#1  __pthread_cond_wait_common (abstime=0x7f2c06131af0, clockid=<optimized 
out>, mutex=0x56541f1b75d0, cond=0x7f2c0e3557a0 
<bmalloc::StaticPerProcessStorageTraits<bmalloc::Scavenger>::Storage::s_memory+32>)
 at pthread_cond_wait.c:520
        spin = 0
        buffer = {__routine = 0x7f2c0b8a0370 <__condvar_cleanup_waiting>, __arg 
= 0x7f2c06131a50, __canceltype = 0, __prev = 0x0}
        cbuffer = {wseq = 2093, cond = 0x7f2c0e3557a0 
<bmalloc::StaticPerProcessStorageTraits<bmalloc::Scavenger>::Storage::s_memory+32>,
 mutex = 0x56541f1b75d0, private = 0}
        err = <optimized out>
        g = 1
        flags = <optimized out>
        g1_start = <optimized out>
        maxspin = 0
        signals = <optimized out>
        result = 0
        wseq = 2093
        seq = 1046
        private = 0
        flags = <optimized out>
        clockid = <optimized out>
#2  __pthread_cond_timedwait (cond=0x7f2c0e3557a0 
<bmalloc::StaticPerProcessStorageTraits<bmalloc::Scavenger>::Storage::s_memory+32>,
 mutex=0x56541f1b75d0, abstime=0x7f2c06131af0) at pthread_cond_wait.c:656
        flags = <optimized out>
        clockid = <optimized out>
#3  0x00007f2c0e01ea91 in __gthread_cond_timedwait () at 
/usr/include/x86_64-linux-gnu/c++/9/bits/gthr-default.h:872
#4  std::condition_variable::__wait_until_impl<std::chrono::duration<long, 
std::ratio<1l, 1000000000l> > >(std::unique_lock<std::mutex>&, 
std::chrono::time_point<std::chrono::_V2::system_clock, 
std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&) () at 
/usr/include/c++/9/condition_variable:188
#5  std::condition_variable::wait_until<std::chrono::duration<long, 
std::ratio<1l, 1000000000l> > >(std::unique_lock<std::mutex>&, 
std::chrono::time_point<std::chrono::_V2::system_clock, 
std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&) () at 
/usr/include/c++/9/condition_variable:108
#6  
std::_V2::condition_variable_any::wait_until<std::unique_lock<bmalloc::Mutex>, 
std::chrono::_V2::system_clock, std::chrono::duration<long, std::ratio<1l, 
1000000000l> > >(std::unique_lock<bmalloc::Mutex>&, 
std::chrono::time_point<std::chrono::_V2::system_clock, 
std::chrono::duration<long, std::ratio<1l, 1000000000l> > > const&) () at 
/usr/include/c++/9/condition_variable:296
#7  wait_until<std::unique_lock<bmalloc::Mutex>, 
std::chrono::_V2::system_clock, std::chrono::duration<long int, std::ratio<1, 
1000000000> >, bmalloc::Scavenger::threadRunLoop()::<lambda()> > () at 
/usr/include/c++/9/condition_variable:307
#8  wait_for<std::unique_lock<bmalloc::Mutex>, long int, std::ratio<1, 1000>, 
bmalloc::Scavenger::threadRunLoop()::<lambda()> > () at 
/usr/include/c++/9/condition_variable:322
#9  bmalloc::Scavenger::threadRunLoop() () at 
../Source/bmalloc/bmalloc/Scavenger.cpp:411
#10 0x00007f2c0e01ebd9 in 
bmalloc::Scavenger::threadEntryPoint(bmalloc::Scavenger*) () at 
../Source/bmalloc/bmalloc/Scavenger.cpp:385
#11 0x00007f2c0bae1be0 in std::execute_native_thread_routine(void*) 
(__p=0x56541f2503e0) at ../../../../../src/libstdc++-v3/src/c++11/thread.cc:80
#12 0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139827057207040, 
-8424850421097057240, 140728289403646, 140728289403647, 139827057204288, 
139827057207040, 8452384639187006504, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#13 0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 2 (Thread 0x7f2c083cb700 (LWP 4176686)):
#0  0x00007f2c0f6fcb7f in __GI___poll (fds=0x56541f0b46f0, nfds=1, timeout=-1) 
at ../sysdeps/unix/sysv/linux/poll.c:29
        resultvar = 18446744073709551100
        sc_cancel_oldtype = 0
#1  0x00007f2c0e79b7fe in g_main_context_poll (priority=<optimized out>, 
n_fds=1, fds=0x56541f0b46f0, timeout=<optimized out>, context=0x56541f0b8110) 
at ../../../glib/gmain.c:4346
        ret = <optimized out>
        errsv = <optimized out>
        poll_func = 0x7f2c0e7ab1d0 <g_poll>
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0x56541f0b46f0
#2  g_main_context_iterate (context=context@entry=0x56541f0b8110, 
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at 
../../../glib/gmain.c:4042
        max_priority = 2147483647
        timeout = -1
        some_ready = <optimized out>
        nfds = 1
        allocated_nfds = <optimized out>
        fds = 0x56541f0b46f0
#3  0x00007f2c0e79b91f in g_main_context_iteration (context=0x56541f0b8110, 
may_block=may_block@entry=1) at ../../../glib/gmain.c:4108
        retval = <optimized out>
#4  0x00007f2c0e79b971 in glib_worker_main (data=<optimized out>) at 
../../../glib/gmain.c:5996
#5  0x00007f2c0e7c452d in g_thread_proxy (data=0x56541f07b580) at 
../../../glib/gthread.c:807
        thread = 0x56541f07b580
        __func__ = "g_thread_proxy"
#6  0x00007f2c0b899f27 in start_thread (arg=<optimized out>) at 
pthread_create.c:479
        ret = <optimized out>
        pd = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {139827093485312, 
-8424850421097057240, 140728289403022, 140728289403023, 139827093482560, 
139827093485312, 8452406941341561896, 8452407948066403368}, mask_was_saved = 
0}}, priv = {pad = {0x0, 0x0, 0x0, 0x0}, data = {prev = 0x0, cleanup = 0x0, 
canceltype = 0}}}
        not_first_call = 0
#7  0x00007f2c0f70731f in clone () at 
../sysdeps/unix/sysv/linux/x86_64/clone.S:95

Thread 1 (Thread 0x7f2c0869cf80 (LWP 4176684)):
#0  operator()() () at 
../Source/WebCore/platform/graphics/gstreamer/WebKitWebSourceGStreamer.cpp:699
#1  0x00007f2c0dfbe9fc in WTF::Function<void ()>::operator()() const () at 
../Source/WTF/wtf/Function.h:84
#2  WTF::RunLoop::performWork() () at ../Source/WTF/wtf/RunLoop.cpp:124
#3  0x00007f2c0e00c839 in operator() () at 
../Source/WTF/wtf/glib/RunLoopGLib.cpp:68
#4  _FUN() () at ../Source/WTF/wtf/glib/RunLoopGLib.cpp:70
#5  0x00007f2c0e79b4de in g_main_dispatch (context=0x56541f0bebb0) at 
../../../glib/gmain.c:3309
        dispatch = 0x7f2c0e00c850 <_FUN()>
        prev_source = 0x0
        was_in_call = 0
        user_data = 0x7f2c058fa000
        callback = 0x7f2c0e00c830 <_FUN()>
        cb_funcs = 0x7f2c0e870280 <g_source_callback_funcs>
        cb_data = 0x56541f167300
        need_destroy = <optimized out>
        source = 0x56541f27b660
        current = 0x56541f0bec70
        i = 0
        __func__ = "g_main_dispatch"
#6  g_main_context_dispatch (context=context@entry=0x56541f0bebb0) at 
../../../glib/gmain.c:3974
#7  0x00007f2c0e79b890 in g_main_context_iterate (context=0x56541f0bebb0, 
block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at 
../../../glib/gmain.c:4047
        max_priority = 100
        timeout = 0
        some_ready = 1
        nfds = <optimized out>
        allocated_nfds = <optimized out>
        fds = 0x56541f16e260
#8  0x00007f2c0e79bb63 in g_main_loop_run (loop=0x56541f0a5860) at 
../../../glib/gmain.c:4241
        __func__ = "g_main_loop_run"
#9  0x00007f2c0e00d298 in WTF::RunLoop::run() () at 
../Source/WTF/wtf/glib/RunLoopGLib.cpp:96
#10 0x00007f2c1059e5bf in WebKit::AuxiliaryProcessMain<WebKit::WebProcess, 
WebKit::WebProcessMainGtk>(int, char**) () at 
../Source/WebKit/Shared/AuxiliaryProcessMain.h:68
#11 0x00007f2c0f630e0b in __libc_start_main (main=0x56541e4e9760 <main()>, 
argc=3, argv=0x7ffddbb32738, init=<optimized out>, fini=<optimized out>, 
rtld_fini=<optimized out>, stack_end=0x7ffddbb32728) at ../csu/libc-start.c:308
        result = <optimized out>
        unwind_buf = {cancel_jmp_buf = {{jmp_buf = {0, 2863400618128946216, 
94919285708736, 140728289404720, 0, 0, 8426054907315205160, 
8452400994078405672}, mask_was_saved = 0}}, priv = {pad = {0x0, 0x0, 
0x7ffddbb32758, 0x7f2c12be0190}, data = {prev = 0x0, cleanup = 0x0, canceltype 
= -609015976}}}
        not_first_call = <optimized out>
#12 0x000056541e4e97ea in _start ()

-- System Information:
Debian Release: bullseye/sid
  APT prefers testing-debug
  APT policy: (900, 'testing-debug'), (900, 'testing'), (800, 
'unstable-debug'), (800, 'unstable'), (790, 'buildd-unstable'), (700, 
'experimental-debug'), (700, 'experimental'), (690, 'buildd-experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 5.6.0-2-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_FIRMWARE_WORKAROUND
Locale: LANG=en_AU.utf8, LC_CTYPE=en_AU.utf8 (charmap=UTF-8), LANGUAGE=en_AU:en 
(charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages libwebkit2gtk-4.0-37:amd64 depends on:
ii  bubblewrap                      0.4.1-1
ii  libatk1.0-0                     2.36.0-2
ii  libc6                           2.30-8
ii  libcairo2                       1.16.0-4
ii  libegl1                         1.3.1-1
ii  libenchant-2-2                  2.2.8-1
ii  libfontconfig1                  2.13.1-4.2
ii  libfreetype6                    2.10.1-2
ii  libgcc-s1                       10.1.0-3
ii  libgcrypt20                     1.8.5-5
ii  libgdk-pixbuf2.0-0              2.40.0+dfsg-5
ii  libgl1                          1.3.1-1
ii  libglib2.0-0                    2.64.3-1
ii  libgstreamer-gl1.0-0            1.16.2-4
ii  libgstreamer-plugins-base1.0-0  1.16.2-4
ii  libgstreamer1.0-0               1.16.2-2
ii  libgtk-3-0                      3.24.20-1
ii  libharfbuzz-icu0                2.6.4-1+b1
ii  libharfbuzz0b                   2.6.4-1+b1
ii  libhyphen0                      2.8.8-7
ii  libicu67                        67.1-2
ii  libjavascriptcoregtk-4.0-18     2.28.2-2+b1
ii  libjpeg62-turbo                 1:1.5.2-2+b1
ii  libnotify4                      0.7.9-1
ii  libopenjp2-7                    2.3.1-1
ii  libpango-1.0-0                  1.44.7-4
ii  libpng16-16                     1.6.37-2
ii  libseccomp2                     2.4.3-1+b1
ii  libsecret-1-0                   0.20.3-1
ii  libsoup2.4-1                    2.70.0-1
ii  libsqlite3-0                    3.32.3-1
ii  libstdc++6                      10.1.0-3
ii  libtasn1-6                      4.16.0-2
ii  libwayland-client0              1.18.0-1
ii  libwayland-egl1                 1.18.0-1
ii  libwayland-server0              1.18.0-1
ii  libwebp6                        0.6.1-2+b1
ii  libwebpdemux2                   0.6.1-2+b1
ii  libwoff1                        1.0.2-1+b1
ii  libwpe-1.0-1                    1.6.0-1
ii  libwpebackend-fdo-1.0-1         1.6.1-1
ii  libx11-6                        2:1.6.9-2+b1
ii  libxcomposite1                  1:0.4.5-1
ii  libxdamage1                     1:1.1.5-2
ii  libxml2                         2.9.10+dfsg-5+b1
ii  libxslt1.1                      1.1.34-4
ii  xdg-dbus-proxy                  0.1.2-1
ii  zlib1g                          1:1.2.11.dfsg-2

Versions of packages libwebkit2gtk-4.0-37:amd64 recommends:
ii  gstreamer1.0-alsa          1.16.2-4
pn  gstreamer1.0-gl            <none>
ii  gstreamer1.0-libav         1.16.2-2
ii  gstreamer1.0-plugins-good  1.16.2-3
ii  gstreamer1.0-pulseaudio    1.16.2-3
ii  libgl1-mesa-dri            20.1.1-1

libwebkit2gtk-4.0-37:amd64 suggests no packages.

-- no debconf information

-- 
bye,
pabs

https://wiki.debian.org/PaulWise

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