Attachment 372891 Details for Bug 199217 – thread info and thread traceback

thread info and thread traceback

webkit-hang (text/x-emacs-lisp), 61.99 KB, created by Rich Coe on 2019-06-25 18:40:44 PDT

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Creator: Rich Coe

Created: 2019-06-25 18:40:44 PDT

Size: 61.99 KB

patch

obsolete

>
>(gdb) info thr
>  Id   Target Id                                          Frame
>* 1    Thread 0x7f16d0f09400 (LWP 4960) "WebKitWebProces" 0x00007f16c8f775a6 in gst_adaptive_demux_change_state
>    (element=0x7f1628007960, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstadaptivedemux.c:562
>  2    Thread 0x7f16d0b95700 (LWP 4962) "gmain"           0x00007f16d575dae9 in poll () from /lib64/libc.so.6
>  3    Thread 0x7f16cbfff700 (LWP 4963) "dconf worker"    0x00007f16d575dae9 in poll () from /lib64/libc.so.6
>  4    Thread 0x7f16cb7fe700 (LWP 4964) "gdbus"           0x00007f16d575dae9 in poll () from /lib64/libc.so.6
>  5    Thread 0x7f16caffd700 (LWP 4965) "EventDispatcher" 0x00007f16d575dae9 in poll () from /lib64/libc.so.6
>  6    Thread 0x7f16ca7fc700 (LWP 4966) "rruptDispatcher" 0x00007f16d575dae9 in poll () from /lib64/libc.so.6
>  7    Thread 0x7f16c9ffb700 (LWP 4967) "nnectionManager" 0x00007f16d575dae9 in poll () from /lib64/libc.so.6
>  8    Thread 0x7f16c97fa700 (LWP 4968) "ReceiveQueue"    0x00007f16d575dae9 in poll () from /lib64/libc.so.6
>  9    Thread 0x7f167bffd700 (LWP 4972) "ReceiveQueue"    0x00007f16d575dae9 in poll () from /lib64/libc.so.6
>  10   Thread 0x7f16357fa700 (LWP 5169) "DataURLDecoder"  0x00007f16d575dae9 in poll () from /lib64/libc.so.6
>  11   Thread 0x7f1660ff9700 (LWP 5374) "CryptoQueue"     0x00007f16d575dae9 in poll () from /lib64/libc.so.6
>  12   Thread 0x7f1678fcd700 (LWP 5375) "CryptoQueue"     0x00007f16d575dae9 in poll () from /lib64/libc.so.6
>  13   Thread 0x7f162ffff700 (LWP 5385) "source:src"      0x00007f16d57632f9 in syscall ()
>   from /lib64/libc.so.6
>  14   Thread 0x7f162f7fe700 (LWP 5406) "CryptoQueue"     0x00007f16d575dae9 in poll () from /lib64/libc.so.6
>  15   Thread 0x7f162dffb700 (LWP 5410) "source:src"      0x00007f16d57632f9 in syscall ()
>   from /lib64/libc.so.6
>  16   Thread 0x7f162d7fa700 (LWP 5411) "task65"          0x00007f16d57632f9 in syscall ()
>   from /lib64/libc.so.6
>  17   Thread 0x7f162cff9700 (LWP 5412) "task68"          0x00007f16d57632f9 in syscall ()
>   from /lib64/libc.so.6
>  18   Thread 0x7f16093ac700 (LWP 5414) "queue9:src"      0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2
>    () from /lib64/libpthread.so.0
>  19   Thread 0x7f1608b5d700 (LWP 5415) "webkitwebsrc6:s" 0x00007f16d57632f9 in syscall ()
>   from /lib64/libc.so.6
>  20   Thread 0x7f15fbfff700 (LWP 5416) "queue10:src"     0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2
>    () from /lib64/libpthread.so.0
>  21   Thread 0x7f15fb7fe700 (LWP 5417) "webkitwebsrc7:s" 0x00007f16d57632f9 in syscall ()
>   from /lib64/libc.so.6
>  22   Thread 0x7f15e4ff9700 (LWP 5429) "multiqueue11:sr" 0x00007f16d57632f9 in syscall ()
>   from /lib64/libc.so.6
>  23   Thread 0x7f15b7fff700 (LWP 5430) "multiqueue12:sr" 0x00007f16d57632f9 in syscall ()
>   from /lib64/libc.so.6
>  24   Thread 0x7f15b77fe700 (LWP 5431) "multiqueue12:sr" 0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2
>    () from /lib64/libpthread.so.0
>  25   Thread 0x7f15b6ffd700 (LWP 5432) "multiqueue12:sr" 0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2
>    () from /lib64/libpthread.so.0
>  26   Thread 0x7f15b67fc700 (LWP 5433) "multiqueue12:sr" 0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2
>    () from /lib64/libpthread.so.0
>  27   Thread 0x7f15b5ffb700 (LWP 5434) "multiqueue12:sr" 0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2
>    () from /lib64/libpthread.so.0
>  28   Thread 0x7f15b57fa700 (LWP 5435) "multiqueue12:sr" 0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2
>    () from /lib64/libpthread.so.0
>  29   Thread 0x7f15b4ff9700 (LWP 5436) "multiqueue12:sr" 0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2
>    () from /lib64/libpthread.so.0
>  30   Thread 0x7f15affff700 (LWP 5437) "multiqueue12:sr" 0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2
>    () from /lib64/libpthread.so.0
>  31   Thread 0x7f15af7fe700 (LWP 5438) "multiqueue12:sr" 0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2
>    () from /lib64/libpthread.so.0
>  32   Thread 0x7f15ad7fa700 (LWP 5442) "vqueue:src"      0x00007f16d57632f9 in syscall ()
>   from /lib64/libc.so.6
>
>Thread 32 (Thread 0x7f15ad7fa700 (LWP 5442)):
>#0  0x00007f16d57632f9 in syscall () at /lib64/libc.so.6
>#1  0x00007f16d49299bf in g_cond_wait (cond=cond@entry=0x55c5181664b0, mutex=mutex@entry=0x55c5181664a8)
>    at ../glib/gthread-posix.c:1413
>#2  0x00007f16d291b86b in gst_base_sink_wait_preroll (sink=sink@entry=0x55c518166380) at gstbasesink.c:2267
>#3  0x00007f16d291bdd1 in gst_base_sink_do_preroll
>    (sink=sink@entry=0x55c518166380, obj=obj@entry=0x7f164002a400) at gstbasesink.c:2361
>#4  0x00007f16d291c581 in gst_base_sink_do_sync
>    (basesink=basesink@entry=0x55c518166380, obj=obj@entry=0x7f164002a400, late=late@entry=0x7f15ad7f8d10, step_end=step_end@entry=0x7f15ad7f8d14) at gstbasesink.c:2564
>#5  0x00007f16d291dbbd in gst_base_sink_chain_unlocked
>    (basesink=basesink@entry=0x55c518166380, obj=obj@entry=0x7f164002a400, is_list=is_list@entry=0, pad=<optimized out>) at gstbasesink.c:3513
>#6  0x00007f16d291ee50 in gst_base_sink_chain_main
>    (basesink=0x55c518166380, pad=<optimized out>, obj=0x7f164002a400, is_list=0) at gstbasesink.c:3672
>#7  0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f1605150fc0, type=type@entry=4112, data=data@entry=0x7f164002a400) at gstpad.c:4322
>#8  0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f1614047a00, type=type@entry=4112, data=data@entry=0x7f164002a400) at gstpad.c:4578
>#9  0x00007f16d2825303 in gst_pad_push (pad=pad@entry=0x7f1614047a00, buffer=buffer@entry=0x7f164002a400)
>    at gstpad.c:4697
>#10 0x00007f16d280c133 in gst_proxy_pad_chain_default
>    (pad=<optimized out>, parent=<optimized out>, buffer=0x7f164002a400) at gstghostpad.c:127
>#11 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x55c51575da90, type=type@entry=4112, data=data@entry=0x7f164002a400) at gstpad.c:4322
>#12 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f161403ae50, type=type@entry=4112, data=data@entry=0x7f164002a400) at gstpad.c:4578
>#13 0x00007f16d2825303 in gst_pad_push (pad=0x7f161403ae50, buffer=0x7f164002a400) at gstpad.c:4697
>#14 0x00007f16d29290e0 in gst_base_transform_chain
>    (pad=<optimized out>, parent=0x7f15888e32b0, buffer=<optimized out>) at gstbasetransform.c:2321
>#15 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f16100150a0, type=type@entry=4112, data=data@entry=0x7f15d80b64f0) at gstpad.c:4322
>#16 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f1610015540, type=type@entry=4112, data=data@entry=0x7f15d80b64f0) at gstpad.c:4578
>#17 0x00007f16d2825303 in gst_pad_push (pad=0x7f1610015540, buffer=0x7f15d80b64f0) at gstpad.c:4697
>#18 0x00007f16d29290e0 in gst_base_transform_chain
>    (pad=<optimized out>, parent=0x7f15888c00d0, buffer=<optimized out>) at gstbasetransform.c:2321
>#19 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f1614079410, type=type@entry=4112, data=data@entry=0x7f15d80b64f0) at gstpad.c:4322
>#20 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f161403b9e0, type=type@entry=4112, data=data@entry=0x7f15d80b64f0) at gstpad.c:4578
>#21 0x00007f16d2825303 in gst_pad_push (pad=0x7f161403b9e0, buffer=0x7f15d80b64f0) at gstpad.c:4697
>#22 0x00007f16d29290e0 in gst_base_transform_chain
>    (pad=<optimized out>, parent=0x7f15888bdbc0, buffer=<optimized out>) at gstbasetransform.c:2321
>#23 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f161403ac00, type=type@entry=4112, data=data@entry=0x7f15d80b64f0) at gstpad.c:4322
>#24 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f161403b540, type=type@entry=4112, data=data@entry=0x7f15d80b64f0) at gstpad.c:4578
>#25 0x00007f16d2825303 in gst_pad_push (pad=0x7f161403b540, buffer=0x7f15d80b64f0) at gstpad.c:4697
>#26 0x00007f16d29290e0 in gst_base_transform_chain
>    (pad=<optimized out>, parent=0x7f15888e18a0, buffer=<optimized out>) at gstbasetransform.c:2321
>#27 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f161403b790, type=type@entry=4112, data=data@entry=0x7f15d80b64f0) at gstpad.c:4322
>#28 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f16101f67d0, type=type@entry=4112, data=data@entry=0x7f15d80b64f0) at gstpad.c:4578
>#29 0x00007f16d2825303 in gst_pad_push (pad=pad@entry=0x7f16101f67d0, buffer=buffer@entry=0x7f15d80b64f0)
>    at gstpad.c:4697
>#30 0x00007f16d280c133 in gst_proxy_pad_chain_default
>    (pad=<optimized out>, parent=<optimized out>, buffer=0x7f15d80b64f0) at gstghostpad.c:127
>#31 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f1614047500, type=type@entry=4112, data=data@entry=0x7f15d80b64f0) at gstpad.c:4322
>#32 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f16047216c0, type=type@entry=4112, data=data@entry=0x7f15d80b64f0) at gstpad.c:4578
>#33 0x00007f16d2825303 in gst_pad_push (pad=0x7f16047216c0, buffer=0x7f15d80b64f0) at gstpad.c:4697
>#34 0x00007f1679cfba44 in  () at /usr/lib64/gstreamer-1.0/libgstcoreelements.so
>#35 0x00007f16d285226f in gst_task_func (task=0x55c5137c6950) at gsttask.c:332
>#36 0x00007f16d4908064 in g_thread_pool_thread_proxy (data=<optimized out>) at ../glib/gthreadpool.c:308
>#37 0x00007f16d490767d in g_thread_proxy (data=0x7f1604003320) at ../glib/gthread.c:805
>#38 0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#39 0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 31 (Thread 0x7f15af7fe700 (LWP 5438)):
>#0  0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
>#1  0x00007f160f14165e in  () at /usr/lib64/libavcodec.so.58
>#2  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#3  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 30 (Thread 0x7f15affff700 (LWP 5437)):
>#0  0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
>#1  0x00007f160f14165e in  () at /usr/lib64/libavcodec.so.58
>#2  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#3  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 29 (Thread 0x7f15b4ff9700 (LWP 5436)):
>#0  0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
>#1  0x00007f160f14165e in  () at /usr/lib64/libavcodec.so.58
>#2  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#3  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 28 (Thread 0x7f15b57fa700 (LWP 5435)):
>#0  0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
>#1  0x00007f160f14165e in  () at /usr/lib64/libavcodec.so.58
>#2  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#3  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 27 (Thread 0x7f15b5ffb700 (LWP 5434)):
>#0  0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
>#1  0x00007f160f14165e in  () at /usr/lib64/libavcodec.so.58
>#2  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#3  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 26 (Thread 0x7f15b67fc700 (LWP 5433)):
>#0  0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
>#1  0x00007f160f14165e in  () at /usr/lib64/libavcodec.so.58
>#2  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#3  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 25 (Thread 0x7f15b6ffd700 (LWP 5432)):
>#0  0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
>#1  0x00007f160f14165e in  () at /usr/lib64/libavcodec.so.58
>#2  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#3  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 24 (Thread 0x7f15b77fe700 (LWP 5431)):
>#0  0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
>#1  0x00007f160f14165e in  () at /usr/lib64/libavcodec.so.58
>#2  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#3  0x00007f16d57686af in clone () at /lib64/libc.so.6
>Thread 23 (Thread 0x7f15b7fff700 (LWP 5430)):
>#0  0x00007f16d57632f9 in syscall () at /lib64/libc.so.6
>#1  0x00007f16d49299bf in g_cond_wait (cond=0x7f15d8005de8, mutex=0x7f15d8005dc0)
>    at ../glib/gthread-posix.c:1413
>#2  0x00007f1679cfc6fe in  () at /usr/lib64/gstreamer-1.0/libgstcoreelements.so
>#3  0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f16047201f0, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4322
>#4  0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f160517b510, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4578
>#5  0x00007f16d2825303 in gst_pad_push (pad=0x7f160517b510, buffer=0x7f1640025060) at gstpad.c:4697
>#6  0x00007f16d29290e0 in gst_base_transform_chain
>    (pad=<optimized out>, parent=0x55c5126ede70, buffer=<optimized out>) at gstbasetransform.c:2321
>#7  0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f160517b760, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4322
>#8  0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f1604721b60, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4578
>#9  0x00007f16d2825303 in gst_pad_push (pad=0x7f1604721b60, buffer=0x7f1640025060) at gstpad.c:4697
>#10 0x00007f16d29290e0 in gst_base_transform_chain
>    (pad=<optimized out>, parent=0x7f15888b8b90, buffer=<optimized out>) at gstbasetransform.c:2321
>#11 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f1604721220, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4322
>#12 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f16046efad0, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4578
>#13 0x00007f16d2825303 in gst_pad_push (pad=pad@entry=0x7f16046efad0, buffer=buffer@entry=0x7f1640025060)
>    at gstpad.c:4697
>#14 0x00007f16d280c133 in gst_proxy_pad_chain_default
>    (pad=<optimized out>, parent=<optimized out>, buffer=0x7f1640025060) at gstghostpad.c:127
>#15 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f15c8a028f0, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4322
>#16 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f15c8a02df0, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4578
>#17 0x00007f16d2825303 in gst_pad_push (pad=pad@entry=0x7f15c8a02df0, buffer=buffer@entry=0x7f1640025060)
>    at gstpad.c:4697
>#18 0x00007f16d280c133 in gst_proxy_pad_chain_default
>    (pad=<optimized out>, parent=<optimized out>, buffer=0x7f1640025060) at gstghostpad.c:127
>#19 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f16051831a0, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4322
>#20 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f15c8a0cac0, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4578
>#21 0x00007f16d2825303 in gst_pad_push (pad=0x7f15c8a0cac0, buffer=0x7f1640025060) at gstpad.c:4697
>#22 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f15c8a0c870, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4322
>#23 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f15c8a0c620, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4578
>#24 0x00007f16d2825303 in gst_pad_push (pad=0x7f15c8a0c620, buffer=0x7f1640025060) at gstpad.c:4697
>#25 0x00007f16d29290e0 in gst_base_transform_chain
>    (pad=<optimized out>, parent=0x7f15888e62e0, buffer=<optimized out>) at gstbasetransform.c:2321
>#26 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f15f40b8c10, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4322
>#27 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f1605183400, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4578
>#28 0x00007f16d2825303 in gst_pad_push (pad=pad@entry=0x7f1605183400, buffer=buffer@entry=0x7f1640025060)
>    at gstpad.c:4697
>#29 0x00007f16d280c133 in gst_proxy_pad_chain_default
>    (pad=<optimized out>, parent=<optimized out>, buffer=0x7f1640025060) at gstghostpad.c:127
>#30 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f15c8a02b70, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4322
>#31 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f15f40b89c0, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4578
>#32 0x00007f16d2825303 in gst_pad_push (pad=0x7f15f40b89c0, buffer=0x7f1640025060) at gstpad.c:4697
>#33 0x00007f1679d95102 in  () at /usr/lib64/gstreamer-1.0/libgstplayback.so
>#34 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f15f40b8520, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4322
>#35 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f16101f7870, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4578
>#36 0x00007f16d2825303 in gst_pad_push (pad=pad@entry=0x7f16101f7870, buffer=buffer@entry=0x7f1640025060)
>    at gstpad.c:4697
>#37 0x00007f16d280c133 in gst_proxy_pad_chain_default
>    (pad=<optimized out>, parent=<optimized out>, buffer=0x7f1640025060) at gstghostpad.c:127
>#38 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f1614047c80, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4322
>#39 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f1604721910, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4578
>#40 0x00007f16d2825303 in gst_pad_push (pad=0x7f1604721910, buffer=0x7f1640025060) at gstpad.c:4697
>#41 0x00007f1679cedd9f in  () at /usr/lib64/gstreamer-1.0/libgstcoreelements.so
>#42 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f15d8004080, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4322
>#43 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f1614046d80, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4578
>#44 0x00007f16d2825303 in gst_pad_push (pad=pad@entry=0x7f1614046d80, buffer=buffer@entry=0x7f1640025060)
>    at gstpad.c:4697
>#45 0x00007f16d280c133 in gst_proxy_pad_chain_default
>    (pad=<optimized out>, parent=<optimized out>, buffer=0x7f1640025060) at gstghostpad.c:127
>#46 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f16101f6310, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4322
>#47 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x55c511e38ae0, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4578
>#48 0x00007f16d2825303 in gst_pad_push (pad=pad@entry=0x55c511e38ae0, buffer=buffer@entry=0x7f1640025060)
>    at gstpad.c:4697
>#49 0x00007f16d280c133 in gst_proxy_pad_chain_default
>    (pad=<optimized out>, parent=<optimized out>, buffer=0x7f1640025060) at gstghostpad.c:127
>#50 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f161408e5e0, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4322
>#51 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f1604720fd0, type=type@entry=4112, data=data@entry=0x7f1640025060) at gstpad.c:4578
>#52 0x00007f16d2825303 in gst_pad_push (pad=0x7f1604720fd0, buffer=0x7f1640025060) at gstpad.c:4697
>#53 0x00007f16d26540b2 in  () at /usr/lib64/libgstvideo-1.0.so.0
>#54 0x00007f16d265b79b in gst_video_decoder_finish_frame () at /usr/lib64/libgstvideo-1.0.so.0
>#55 0x00007f16606f5cbe in  () at /usr/lib64/gstreamer-1.0/libgstlibav.so
>#56 0x00007f16606f6838 in  () at /usr/lib64/gstreamer-1.0/libgstlibav.so
>#57 0x00007f16d265357b in  () at /usr/lib64/libgstvideo-1.0.so.0
>#58 0x00007f16d2656084 in  () at /usr/lib64/libgstvideo-1.0.so.0
>#59 0x00007f16d2656762 in  () at /usr/lib64/libgstvideo-1.0.so.0
>#60 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f1604720b30, type=type@entry=4112, data=data@entry=0x7f1640025b00) at gstpad.c:4322
>#61 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f16046f0160, type=type@entry=4112, data=data@entry=0x7f1640025b00) at gstpad.c:4578
>#62 0x00007f16d2825303 in gst_pad_push (pad=0x7f16046f0160, buffer=0x7f1640025b00) at gstpad.c:4697
>#63 0x00007f16d29290e0 in gst_base_transform_chain
>    (pad=<optimized out>, parent=0x7f161001a470, buffer=<optimized out>) at gstbasetransform.c:2321
>#64 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f16046f1190, type=type@entry=4112, data=data@entry=0x7f1640025b00) at gstpad.c:4322
>#65 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f16046f0600, type=type@entry=4112, data=data@entry=0x7f1640025b00) at gstpad.c:4578
>#66 0x00007f16d2825303 in gst_pad_push (pad=0x7f16046f0600, buffer=buffer@entry=0x7f1640025b00)
>    at gstpad.c:4697
>#67 0x00007f16d290dc17 in gst_base_parse_push_frame
>    (parse=parse@entry=0x7f16140a1bc0, frame=frame@entry=0x7f15d8002770) at gstbaseparse.c:2535
>#68 0x00007f16d291091b in gst_base_parse_handle_and_push_frame (frame=0x7f15d8002770, parse=0x7f16140a1bc0)
>    at gstbaseparse.c:2352
>#69 0x00007f16d291091b in gst_base_parse_finish_frame
>    (parse=parse@entry=0x7f16140a1bc0, frame=frame@entry=0x7f15d8002770, size=size@entry=1621)
>    at gstbaseparse.c:2693
>#70 0x00007f1660727785 in gst_h264_parse_handle_frame
>    (parse=0x7f16140a1bc0, frame=0x7f15d8002770, skipsize=0x7f15b7ffe7a8) at gsth264parse.c:1276
>#71 0x00007f16d2908866 in gst_base_parse_handle_buffer
>    (parse=parse@entry=0x7f16140a1bc0, buffer=<optimized out>, skip=skip@entry=0x7f15b7ffe7a8, flushed=flushed@entry=0x7f15b7ffe7ac) at gstbaseparse.c:2160
>#72 0x00007f16d290e86e in gst_base_parse_chain
>    (pad=<optimized out>, parent=0x7f16140a1bc0, buffer=<optimized out>) at gstbaseparse.c:3242
>#73 0x00007f16d281c55f in gst_pad_chain_data_unchecked
>    (pad=pad@entry=0x7f16046f0850, type=type@entry=4112, data=data@entry=0x7f15f0052b80) at gstpad.c:4322
>#74 0x00007f16d281e581 in gst_pad_push_data
>    (pad=pad@entry=0x7f16046f0aa0, type=type@entry=4112, data=data@entry=0x7f15f0052b80) at gstpad.c:4578
>#75 0x00007f16d2825303 in gst_pad_push (pad=0x7f16046f0aa0, buffer=0x7f15f0052b80) at gstpad.c:4697
>#76 0x00007f1679cf69fc in  () at /usr/lib64/gstreamer-1.0/libgstcoreelements.so
>#77 0x00007f16d285226f in gst_task_func (task=0x7f15e80134d0) at gsttask.c:332
>#78 0x00007f16d4908064 in g_thread_pool_thread_proxy (data=<optimized out>) at ../glib/gthreadpool.c:308
>#79 0x00007f16d490767d in g_thread_proxy (data=0x7f15e0003de0) at ../glib/gthread.c:805
>#80 0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#81 0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 22 (Thread 0x7f15e4ff9700 (LWP 5429)):
>#0  0x00007f16d57632f9 in syscall () at /lib64/libc.so.6
>#1  0x00007f16d49299bf in g_cond_wait (cond=cond@entry=0x7f16140059c8, mutex=mutex@entry=0x7f16140059b8)
>    at ../glib/gthread-posix.c:1413
>#2  0x00007f16d29389cb in _gst_data_queue_wait_non_empty (queue=queue@entry=0x7f1614005a10)
>    at gstdataqueue.c:554
>#3  0x00007f16d2939cc8 in gst_data_queue_pop (queue=0x7f1614005a10, item=0x7f15e4ff8a30) at gstdataqueue.c:596
>#4  0x00007f1679cf633a in  () at /usr/lib64/gstreamer-1.0/libgstcoreelements.so
>#5  0x00007f16d285226f in gst_task_func (task=0x7f164016d950) at gsttask.c:332
>#6  0x00007f16d4908064 in g_thread_pool_thread_proxy (data=<optimized out>) at ../glib/gthreadpool.c:308
>#7  0x00007f16d490767d in g_thread_proxy (data=0x7f1664007cf0) at ../glib/gthread.c:805
>#8  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#9  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 21 (Thread 0x7f15fb7fe700 (LWP 5417)):
>#0  0x00007f16d57632f9 in syscall () at /lib64/libc.so.6
>#1  0x00007f16d49299bf in g_cond_wait (cond=cond@entry=0x7f15e0013d10, mutex=mutex@entry=0x7f15e0013cc8)
>    at ../glib/gthread-posix.c:1413
>#2  0x00007f16d285246f in gst_task_func (task=0x7f15e0013cb0) at gsttask.c:317
>#3  0x00007f16d4908064 in g_thread_pool_thread_proxy (data=<optimized out>) at ../glib/gthreadpool.c:308
>#4  0x00007f16d490767d in g_thread_proxy (data=0x7f15fc002d40) at ../glib/gthread.c:805
>#5  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#6  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 20 (Thread 0x7f15fbfff700 (LWP 5416)):
>#0  0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
>#1  0x00007f16d42d7dd3 in WTF::ThreadCondition::timedWait(WTF::Mutex&, WTF::WallTime) ()
>    at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#2  0x00007f16d4276913 in WTF::ParkingLot::parkConditionallyImpl(void const*, WTF::ScopedLambda<bool ()> const&, WTF::ScopedLambda<void ()> const&, WTF::TimeWithDynamicClockType const&) ()
>    at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#3  0x00007f16d6416a1c 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 DerivedSources/ForwardingHeaders/wtf/ParkingLot.h:80
>#4  0x00007f16d6416a1c in WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&, WTF::TimeWithDynamicClockType const&) () at DerivedSources/ForwardingHeaders/wtf/Condition.h:75
>#5  0x00007f16d6416a1c in WTF::Condition::wait<WTF::Lock>(WTF::Lock&) ()
>    at DerivedSources/ForwardingHeaders/wtf/Condition.h:121
>#6  0x00007f16d6416a1c in notifyAndWait<webKitWebSrcCloseSession(WebKitWebSrc*)::<lambda()> > ()
>    at ../Source/WebCore/platform/graphics/gstreamer/MainThreadNotifier.h:82
>#7  0x00007f16d6416a1c in webKitWebSrcCloseSession() ()
>    at ../Source/WebCore/platform/graphics/gstreamer/WebKitWebSourceGStreamer.cpp:609
>#8  0x00007f16d6418f04 in webKitWebSrcStop() ()
>    at ../Source/WebCore/platform/graphics/gstreamer/WebKitWebSourceGStreamer.cpp:633
>#9  0x00007f16d29201ca in gst_base_src_stop (basesrc=basesrc@entry=0x7f15ec031e90) at gstbasesrc.c:3651
>#10 0x00007f16d29276ff in gst_base_src_activate_push (pad=0x7f15bc00e640, active=0, parent=0x7f15ec031e90)
>    at gstbasesrc.c:3794
>#11 0x00007f16d29276ff in gst_base_src_activate_mode
>    (pad=0x7f15bc00e640, parent=0x7f15ec031e90, mode=GST_PAD_MODE_PUSH, active=0) at gstbasesrc.c:3866
>#12 0x00007f16d282197a in activate_mode_internal
>    (pad=pad@entry=0x7f15bc00e640, parent=parent@entry=0x7f15ec031e90, mode=mode@entry=GST_PAD_MODE_PUSH, active=active@entry=0) at gstpad.c:1224
>#13 0x00007f16d2822525 in gst_pad_set_active (pad=pad@entry=0x7f15bc00e640, active=0) at gstpad.c:1122
>#14 0x00007f16d2800481 in activate_pads (vpad=<optimized out>, ret=0x7f15fbffdf50, active=0x7f15fbffdfac)
>    at gstelement.c:3040
>#15 0x00007f16d2813094 in gst_iterator_fold
>    (it=it@entry=0x7f15e8003830, func=func@entry=0x7f16d2800460 <activate_pads>, ret=ret@entry=0x7f15fbffdf50, user_data=user_data@entry=0x7f15fbffdfac) at gstiterator.c:617
>#16 0x00007f16d2800f86 in iterator_activate_fold_with_resync
>    (iter=iter@entry=0x7f15e8003830, user_data=user_data@entry=0x7f15fbffdfac, func=0x7f16d2800460 <activate_pads>) at gstelement.c:3064
>#17 0x00007f16d2802e88 in gst_element_pads_activate
>    (element=element@entry=0x7f15ec031e90, active=<optimized out>, active@entry=0) at gstelement.c:3100
>#18 0x00007f16d2803141 in gst_element_change_state_func (element=0x7f15ec031e90, transition=<optimized out>)
>    at gstelement.c:3174
>#19 0x00007f16d29255be in gst_base_src_change_state
>    (element=0x7f15ec031e90, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstbasesrc.c:3903
>#20 0x00007f16d280531e in gst_element_change_state
>    (element=element@entry=0x7f15ec031e90, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstelement.c:2952
>#21 0x00007f16d2805d54 in gst_element_continue_state
>    (element=element@entry=0x7f15ec031e90, ret=ret@entry=GST_STATE_CHANGE_SUCCESS) at gstelement.c:2660
>#22 0x00007f16d280536b in gst_element_change_state
>    (element=element@entry=0x7f15ec031e90, transition=transition@entry=GST_STATE_CHANGE_PLAYING_TO_PAUSED)
>    at gstelement.c:2991
>#23 0x00007f16d2805a69 in gst_element_set_state_func (element=0x7f15ec031e90, state=GST_STATE_READY)
>    at gstelement.c:2906
>#24 0x00007f16c8edf84f in gst_uri_downloader_fetch_uri_with_range () at /usr/lib64/libgsturidownloader-1.0.so.0
>#25 0x00007f16c8edf911 in gst_uri_downloader_fetch_uri () at /usr/lib64/libgsturidownloader-1.0.so.0
>#26 0x00007f16c8fea4cc in gst_hls_demux_update_playlist
>    (demux=demux@entry=0x7f1628006be0, update=update@entry=1, err=err@entry=0x0) at gsthlsdemux.c:1376
>#27 0x00007f16c8feb07d in gst_hls_demux_change_playlist
>    (demux=demux@entry=0x7f1628006be0, max_bitrate=<optimized out>, changed=changed@entry=0x7f15fbffe2e4)
>    at gsthlsdemux.c:1599
>#28 0x00007f16c8fec341 in gst_hls_demux_select_bitrate (stream=<optimized out>, bitrate=<optimized out>)
>    at gsthlsdemux.c:1149
>#29 0x00007f16c8f7c92e in gst_adaptive_demux_stream_select_bitrate
>    (bitrate=<optimized out>, stream=0x7f15ec0341e0, demux=0x7f1628006be0) at gstadaptivedemux.c:4269
>#30 0x00007f16c8f7c92e in gst_adaptive_demux_stream_advance_fragment_unlocked
>    (duration=<optimized out>, stream=0x7f15ec0341e0, demux=0x7f1628006be0) at gstadaptivedemux.c:4221
>#31 0x00007f16c8f7c92e in gst_adaptive_demux_stream_advance_fragment
>    (demux=demux@entry=0x7f1628006be0, stream=stream@entry=0x7f15ec0341e0, duration=<optimized out>)
>    at gstadaptivedemux.c:4142
>#32 0x00007f16c8fe9b18 in gst_hls_demux_finish_fragment (demux=0x7f1628006be0, stream=0x7f15ec0341e0)
>    at gsthlsdemux.c:953
>#33 0x00007f16c8f702c3 in gst_adaptive_demux_eos_handling (stream=stream@entry=0x7f15ec0341e0)
>    at gstadaptivedemux.c:2719
>#34 0x00007f16c8f70a19 in _src_event (pad=<optimized out>, parent=<optimized out>, event=0x7f164000f260)
>    at gstadaptivedemux.c:2737
>#35 0x00007f16d281d204 in gst_pad_send_event_unchecked
>    (pad=pad@entry=0x7f1630047a00, event=event@entry=0x7f164000f260, type=<optimized out>,
>    type@entry=GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) at gstpad.c:5761
>#36 0x00007f16d281d7a4 in gst_pad_push_event_unchecked
>    (pad=pad@entry=0x7f1605148220, event=0x7f164000f260, type=<optimized out>,
>    type@entry=GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) at gstpad.c:5406
>#37 0x00007f16d281dc16 in push_sticky
>    (pad=pad@entry=0x7f1605148220, ev=ev@entry=0x7f15fbffe600, user_data=user_data@entry=0x7f15fbffe670)
>    at ../gst/gstevent.h:436
>#38 0x00007f16d281b6a0 in events_foreach
>    (pad=pad@entry=0x7f1605148220, func=func@entry=0x7f16d281dbc0 <push_sticky>, user_data=user_data@entry=0x7f15fbffe670) at gstpad.c:612
>#39 0x00007f16d28262e1 in check_sticky (event=0x7f164000f260, pad=0x7f1605148220) at gstpad.c:3981
>#40 0x00007f16d28262e1 in gst_pad_push_event (pad=pad@entry=0x7f1605148220, event=0x7f164000f260)
>    at gstpad.c:5537
>#41 0x00007f16d2826857 in event_forward_func (pad=pad@entry=0x7f1605148220, data=data@entry=0x7f15fbffe770)
>    at ../gst/gstevent.h:436
>#42 0x00007f16d2822bde in gst_pad_forward
>    (pad=pad@entry=0x7f15f0071cd0, forward=forward@entry=0x7f16d28267a0 <event_forward_func>, user_data=user_data@entry=0x7f15fbffe770) at gstpad.c:3008
>#43 0x00007f16d2822d25 in gst_pad_event_default
>    (pad=0x7f15f0071cd0, parent=<optimized out>, event=0x7f164000f260) at gstpad.c:3105
>#44 0x00007f16d281d204 in gst_pad_send_event_unchecked
>    (pad=pad@entry=0x7f15f0071cd0, event=event@entry=0x7f164000f260, type=<optimized out>,
>    type@entry=GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) at gstpad.c:5761
>#45 0x00007f16d281d7a4 in gst_pad_push_event_unchecked
>    (pad=pad@entry=0x7f1614078d20, event=0x7f164000f260, type=<optimized out>,
>    type@entry=GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) at gstpad.c:5406
>#46 0x00007f16d281dc16 in push_sticky
>    (pad=pad@entry=0x7f1614078d20, ev=ev@entry=0x7f15fbffe970, user_data=user_data@entry=0x7f15fbffe9e0)
>    at ../gst/gstevent.h:436
>#47 0x00007f16d281b6a0 in events_foreach
>    (pad=pad@entry=0x7f1614078d20, func=func@entry=0x7f16d281dbc0 <push_sticky>, user_data=user_data@entry=0x7f15fbffe9e0) at gstpad.c:612
>#48 0x00007f16d28262e1 in check_sticky (event=0x7f164000f260, pad=0x7f1614078d20) at gstpad.c:3981
>#49 0x00007f16d28262e1 in gst_pad_push_event (pad=0x7f1614078d20, event=0x7f164000f260) at gstpad.c:5537
>#50 0x00007f1679cfbc52 in  () at /usr/lib64/gstreamer-1.0/libgstcoreelements.so
>#51 0x00007f16d285226f in gst_task_func (task=0x7f15e0013710) at gsttask.c:332
>#52 0x00007f16d4908064 in g_thread_pool_thread_proxy (data=<optimized out>) at ../glib/gthreadpool.c:308
>#53 0x00007f16d490767d in g_thread_proxy (data=0x7f15fc002630) at ../glib/gthread.c:805
>#54 0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#55 0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 19 (Thread 0x7f1608b5d700 (LWP 5415)):
>#0  0x00007f16d57632f9 in syscall () at /lib64/libc.so.6
>#1  0x00007f16d49299bf in g_cond_wait (cond=cond@entry=0x7f164016dad0, mutex=mutex@entry=0x7f164016da88)
>    at ../glib/gthread-posix.c:1413
>#2  0x00007f16d285246f in gst_task_func (task=0x7f164016da70) at gsttask.c:317
>#3  0x00007f16d4908064 in g_thread_pool_thread_proxy (data=<optimized out>) at ../glib/gthreadpool.c:308
>#4  0x00007f16d490767d in g_thread_proxy (data=0x7f15fc0024f0) at ../glib/gthread.c:805
>#5  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#6  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 18 (Thread 0x7f16093ac700 (LWP 5414)):
>#0  0x00007f16d2b8b03c in pthread_cond_wait@@GLIBC_2.3.2 () at /lib64/libpthread.so.0
>#1  0x00007f16d42d7dd3 in WTF::ThreadCondition::timedWait(WTF::Mutex&, WTF::WallTime) ()
>    at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#2  0x00007f16d4276913 in WTF::ParkingLot::parkConditionallyImpl(void const*, WTF::ScopedLambda<bool ()> const&, WTF::ScopedLambda<void ()> const&, WTF::TimeWithDynamicClockType const&) ()
>    at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#3  0x00007f16d6416a1c 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 DerivedSources/ForwardingHeaders/wtf/ParkingLot.h:80
>#4  0x00007f16d6416a1c in WTF::Condition::waitUntil<WTF::Lock>(WTF::Lock&, WTF::TimeWithDynamicClockType const&) () at DerivedSources/ForwardingHeaders/wtf/Condition.h:75
>#5  0x00007f16d6416a1c in WTF::Condition::wait<WTF::Lock>(WTF::Lock&) ()
>    at DerivedSources/ForwardingHeaders/wtf/Condition.h:121
>#6  0x00007f16d6416a1c in notifyAndWait<webKitWebSrcCloseSession(WebKitWebSrc*)::<lambda()> > ()
>    at ../Source/WebCore/platform/graphics/gstreamer/MainThreadNotifier.h:82
>#7  0x00007f16d6416a1c in webKitWebSrcCloseSession() ()
>    at ../Source/WebCore/platform/graphics/gstreamer/WebKitWebSourceGStreamer.cpp:609
>#8  0x00007f16d6418f04 in webKitWebSrcStop() ()
>    at ../Source/WebCore/platform/graphics/gstreamer/WebKitWebSourceGStreamer.cpp:633
>#9  0x00007f16d29201ca in gst_base_src_stop (basesrc=basesrc@entry=0x7f158c00b990) at gstbasesrc.c:3651
>#10 0x00007f16d29276ff in gst_base_src_activate_push (pad=0x7f1604720690, active=0, parent=0x7f158c00b990)
>    at gstbasesrc.c:3794
>#11 0x00007f16d29276ff in gst_base_src_activate_mode
>    (pad=0x7f1604720690, parent=0x7f158c00b990, mode=GST_PAD_MODE_PUSH, active=0) at gstbasesrc.c:3866
>#12 0x00007f16d282197a in activate_mode_internal
>    (pad=pad@entry=0x7f1604720690, parent=parent@entry=0x7f158c00b990, mode=mode@entry=GST_PAD_MODE_PUSH, active=active@entry=0) at gstpad.c:1224
>#13 0x00007f16d2822525 in gst_pad_set_active (pad=pad@entry=0x7f1604720690, active=0) at gstpad.c:1122
>#14 0x00007f16d2800481 in activate_pads (vpad=<optimized out>, ret=0x7f16093aaf50, active=0x7f16093aafac)
>    at gstelement.c:3040
>#15 0x00007f16d2813094 in gst_iterator_fold
>    (it=it@entry=0x55c5122ed290, func=func@entry=0x7f16d2800460 <activate_pads>, ret=ret@entry=0x7f16093aaf50, user_data=user_data@entry=0x7f16093aafac) at gstiterator.c:617
>#16 0x00007f16d2800f86 in iterator_activate_fold_with_resync
>    (iter=iter@entry=0x55c5122ed290, user_data=user_data@entry=0x7f16093aafac, func=0x7f16d2800460 <activate_pads>) at gstelement.c:3064
>#17 0x00007f16d2802e88 in gst_element_pads_activate
>    (element=element@entry=0x7f158c00b990, active=<optimized out>, active@entry=0) at gstelement.c:3100
>#18 0x00007f16d2803141 in gst_element_change_state_func (element=0x7f158c00b990, transition=<optimized out>)
>    at gstelement.c:3174
>#19 0x00007f16d29255be in gst_base_src_change_state
>    (element=0x7f158c00b990, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstbasesrc.c:3903
>#20 0x00007f16d280531e in gst_element_change_state
>    (element=element@entry=0x7f158c00b990, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstelement.c:2952
>#21 0x00007f16d2805d54 in gst_element_continue_state
>    (element=element@entry=0x7f158c00b990, ret=ret@entry=GST_STATE_CHANGE_SUCCESS) at gstelement.c:2660
>#22 0x00007f16d280536b in gst_element_change_state
>    (element=element@entry=0x7f158c00b990, transition=transition@entry=GST_STATE_CHANGE_PLAYING_TO_PAUSED)
>    at gstelement.c:2991
>#23 0x00007f16d2805a69 in gst_element_set_state_func (element=0x7f158c00b990, state=GST_STATE_READY)
>    at gstelement.c:2906
>#24 0x00007f16c8edf84f in gst_uri_downloader_fetch_uri_with_range () at /usr/lib64/libgsturidownloader-1.0.so.0
>#25 0x00007f16c8edf911 in gst_uri_downloader_fetch_uri () at /usr/lib64/libgsturidownloader-1.0.so.0
>#26 0x00007f16c8fea4cc in gst_hls_demux_update_playlist
>    (demux=demux@entry=0x7f1628007960, update=update@entry=1, err=err@entry=0x0) at gsthlsdemux.c:1376
>#27 0x00007f16c8feb07d in gst_hls_demux_change_playlist
>    (demux=demux@entry=0x7f1628007960, max_bitrate=<optimized out>, changed=changed@entry=0x7f16093ab2e4)
>    at gsthlsdemux.c:1599
>#28 0x00007f16c8fec341 in gst_hls_demux_select_bitrate (stream=<optimized out>, bitrate=<optimized out>)
>    at gsthlsdemux.c:1149
>#29 0x00007f16c8f7c92e in gst_adaptive_demux_stream_select_bitrate
>    (bitrate=<optimized out>, stream=0x7f158c00dfd0, demux=0x7f1628007960) at gstadaptivedemux.c:4269
>#30 0x00007f16c8f7c92e in gst_adaptive_demux_stream_advance_fragment_unlocked
>    (duration=<optimized out>, stream=0x7f158c00dfd0, demux=0x7f1628007960) at gstadaptivedemux.c:4221
>#31 0x00007f16c8f7c92e in gst_adaptive_demux_stream_advance_fragment
>    (demux=demux@entry=0x7f1628007960, stream=stream@entry=0x7f158c00dfd0, duration=<optimized out>)
>    at gstadaptivedemux.c:4142
>#32 0x00007f16c8fe9b18 in gst_hls_demux_finish_fragment (demux=0x7f1628007960, stream=0x7f158c00dfd0)
>    at gsthlsdemux.c:953
>#33 0x00007f16c8f702c3 in gst_adaptive_demux_eos_handling (stream=stream@entry=0x7f158c00dfd0)
>    at gstadaptivedemux.c:2719
>#34 0x00007f16c8f70a19 in _src_event (pad=<optimized out>, parent=<optimized out>, event=0x7f164002b5c0)
>    at gstadaptivedemux.c:2737
>#35 0x00007f16d281d204 in gst_pad_send_event_unchecked
>    (pad=pad@entry=0x7f1604726300, event=event@entry=0x7f164002b5c0, type=<optimized out>,
>    type@entry=GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) at gstpad.c:5761
>#36 0x00007f16d281d7a4 in gst_pad_push_event_unchecked
>    (pad=pad@entry=0x7f16046ed100, event=0x7f164002b5c0, type=<optimized out>,
>    type@entry=GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) at gstpad.c:5406
>#37 0x00007f16d281dc16 in push_sticky
>    (pad=pad@entry=0x7f16046ed100, ev=ev@entry=0x7f16093ab600, user_data=user_data@entry=0x7f16093ab670)
>    at ../gst/gstevent.h:436
>#38 0x00007f16d281b6a0 in events_foreach
>    (pad=pad@entry=0x7f16046ed100, func=func@entry=0x7f16d281dbc0 <push_sticky>, user_data=user_data@entry=0x7f16093ab670) at gstpad.c:612
>#39 0x00007f16d28262e1 in check_sticky (event=0x7f164002b5c0, pad=0x7f16046ed100) at gstpad.c:3981
>#40 0x00007f16d28262e1 in gst_pad_push_event (pad=pad@entry=0x7f16046ed100, event=0x7f164002b5c0)
>    at gstpad.c:5537
>#41 0x00007f16d2826857 in event_forward_func (pad=pad@entry=0x7f16046ed100, data=data@entry=0x7f16093ab770)
>    at ../gst/gstevent.h:436
>#42 0x00007f16d2822bde in gst_pad_forward
>    (pad=pad@entry=0x7f16101f6a30, forward=forward@entry=0x7f16d28267a0 <event_forward_func>, user_data=user_data@entry=0x7f16093ab770) at gstpad.c:3008
>#43 0x00007f16d2822d25 in gst_pad_event_default
>    (pad=0x7f16101f6a30, parent=<optimized out>, event=0x7f164002b5c0) at gstpad.c:3105
>#44 0x00007f16d281d204 in gst_pad_send_event_unchecked
>    (pad=pad@entry=0x7f16101f6a30, event=event@entry=0x7f164002b5c0, type=<optimized out>,
>    type@entry=GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) at gstpad.c:5761
>#45 0x00007f16d281d7a4 in gst_pad_push_event_unchecked
>    (pad=pad@entry=0x55c5158243a0, event=0x7f164002b5c0, type=<optimized out>,
>    type@entry=GST_PAD_PROBE_TYPE_EVENT_DOWNSTREAM) at gstpad.c:5406
>#46 0x00007f16d281dc16 in push_sticky
>    (pad=pad@entry=0x55c5158243a0, ev=ev@entry=0x7f16093ab970, user_data=user_data@entry=0x7f16093ab9e0)
>    at ../gst/gstevent.h:436
>#47 0x00007f16d281b6a0 in events_foreach
>    (pad=pad@entry=0x55c5158243a0, func=func@entry=0x7f16d281dbc0 <push_sticky>, user_data=user_data@entry=0x7f16093ab9e0) at gstpad.c:612
>#48 0x00007f16d28262e1 in check_sticky (event=0x7f164002b5c0, pad=0x55c5158243a0) at gstpad.c:3981
>#49 0x00007f16d28262e1 in gst_pad_push_event (pad=0x55c5158243a0, event=0x7f164002b5c0) at gstpad.c:5537
>#50 0x00007f1679cfbc52 in  () at /usr/lib64/gstreamer-1.0/libgstcoreelements.so
>#51 0x00007f16d285226f in gst_task_func (task=0x7f1610010710) at gsttask.c:332
>#52 0x00007f16d4908064 in g_thread_pool_thread_proxy (data=<optimized out>) at ../glib/gthreadpool.c:308
>#53 0x00007f16d490767d in g_thread_proxy (data=0x7f15fc002590) at ../glib/gthread.c:805
>#54 0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#55 0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 17 (Thread 0x7f162cff9700 (LWP 5412)):
>#0  0x00007f16d57632f9 in syscall () at /lib64/libc.so.6
>#1  0x00007f16d49299bf in g_cond_wait (cond=cond@entry=0x7f15ec034308, mutex=mutex@entry=0x7f15ec034300)
>    at ../glib/gthread-posix.c:1413
>#2  0x00007f16c8f782c3 in gst_adaptive_demux_stream_download_uri
>    (demux=demux@entry=0x7f1628006be0, stream=stream@entry=0x7f15ec0341e0, uri=uri@entry=0x7f160400a770 "https://video.twimg.com/ext_tw_video/1142175342586716160/pu/vid/0/3000/540x720/T_m09EgYAd00AoMu.ts", start=start@entry=0, end=<optimized out>, http_status=http_status@entry=0x7f162cff8a24) at gstadaptivedemux.c:3203
>#3  0x00007f16c8f7a398 in gst_adaptive_demux_stream_download_fragment (stream=0x7f15ec0341e0)
>    at gstadaptivedemux.c:3433
>#4  0x00007f16c8f7a398 in gst_adaptive_demux_stream_download_loop (stream=0x7f15ec0341e0)
>    at gstadaptivedemux.c:3752
>#5  0x00007f16d285226f in gst_task_func (task=0x7f15e80135f0) at gsttask.c:332
>#6  0x00007f16d4908064 in g_thread_pool_thread_proxy (data=<optimized out>) at ../glib/gthreadpool.c:308
>#7  0x00007f16d490767d in g_thread_proxy (data=0x7f1604003190) at ../glib/gthread.c:805
>#8  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#9  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 16 (Thread 0x7f162d7fa700 (LWP 5411)):
>#0  0x00007f16d57632f9 in syscall () at /lib64/libc.so.6
>#1  0x00007f16d49299bf in g_cond_wait (cond=cond@entry=0x7f158c00e0f8, mutex=mutex@entry=0x7f158c00e0f0)
>    at ../glib/gthread-posix.c:1413
>#2  0x00007f16c8f782c3 in gst_adaptive_demux_stream_download_uri
>    (demux=demux@entry=0x7f1628007960, stream=stream@entry=0x7f158c00dfd0, uri=uri@entry=0x7f15d8001c00 "https://video.twimg.com/ext_tw_video/1142157725943652353/pu/vid/0/3000/640x800/Am1DK8RWtSAL2gFG.ts", start=start@entry=0, end=<optimized out>, http_status=http_status@entry=0x7f162d7f9a24) at gstadaptivedemux.c:3203
>#3  0x00007f16c8f7a398 in gst_adaptive_demux_stream_download_fragment (stream=0x7f158c00dfd0)
>    at gstadaptivedemux.c:3433
>#4  0x00007f16c8f7a398 in gst_adaptive_demux_stream_download_loop (stream=0x7f158c00dfd0)
>    at gstadaptivedemux.c:3752
>#5  0x00007f16d285226f in gst_task_func (task=0x55c5137c64d0) at gsttask.c:332
>#6  0x00007f16d4908064 in g_thread_pool_thread_proxy (data=<optimized out>) at ../glib/gthreadpool.c:308
>#7  0x00007f16d490767d in g_thread_proxy (data=0x55c5122f26d0) at ../glib/gthread.c:805
>#8  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#9  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 15 (Thread 0x7f162dffb700 (LWP 5410)):
>#0  0x00007f16d57632f9 in syscall () at /lib64/libc.so.6
>#1  0x00007f16d49299bf in g_cond_wait (cond=cond@entry=0x7f1610010bf0, mutex=mutex@entry=0x7f1610010ba8)
>    at ../glib/gthread-posix.c:1413
>#2  0x00007f16d285246f in gst_task_func (task=0x7f1610010b90) at gsttask.c:317
>#3  0x00007f16d4908064 in g_thread_pool_thread_proxy (data=<optimized out>) at ../glib/gthreadpool.c:308
>#4  0x00007f16d490767d in g_thread_proxy (data=0x7f1614003450) at ../glib/gthread.c:805
>#5  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#6  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 14 (Thread 0x7f162f7fe700 (LWP 5406)):
>#0  0x00007f16d575dae9 in poll () at /lib64/libc.so.6
>#1  0x00007f16d48ded2e in g_main_context_poll
>    (priority=<optimized out>, n_fds=1, fds=0x7f15fc003940, timeout=<optimized out>, context=0x7f15fc001600)
>    at ../glib/gmain.c:4228
>#2  0x00007f16d48ded2e in g_main_context_iterate
>    (context=0x7f15fc001600, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
>    at ../glib/gmain.c:3922
>#3  0x00007f16d48df0d3 in g_main_loop_run (loop=0x7f15fc0016f0) at ../glib/gmain.c:4123
>#4  0x00007f16d42d6fa8 in WTF::RunLoop::run() () at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#5  0x00007f16d427ac24 in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
>    at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#6  0x00007f16d42d7409 in  () at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#7  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#8  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 13 (Thread 0x7f162ffff700 (LWP 5385)):
>#0  0x00007f16d57632f9 in syscall () at /lib64/libc.so.6
>#1  0x00007f16d49299bf in g_cond_wait (cond=cond@entry=0x7f1610010e30, mutex=mutex@entry=0x7f1610010de8)
>    at ../glib/gthread-posix.c:1413
>#2  0x00007f16d285246f in gst_task_func (task=0x7f1610010dd0) at gsttask.c:317
>#3  0x00007f16d4908064 in g_thread_pool_thread_proxy (data=<optimized out>) at ../glib/gthreadpool.c:308
>#4  0x00007f16d490767d in g_thread_proxy (data=0x7f15d8002680) at ../glib/gthread.c:805
>#5  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#6  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 12 (Thread 0x7f1678fcd700 (LWP 5375)):
>#0  0x00007f16d575dae9 in poll () at /lib64/libc.so.6
>#1  0x00007f16d48ded2e in g_main_context_poll
>    (priority=<optimized out>, n_fds=1, fds=0x7f1658002ce0, timeout=<optimized out>, context=0x7f1658001a70)
>    at ../glib/gmain.c:4228
>#2  0x00007f16d48ded2e in g_main_context_iterate
>    (context=0x7f1658001a70, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
>    at ../glib/gmain.c:3922
>#3  0x00007f16d48df0d3 in g_main_loop_run (loop=0x7f1658001b30) at ../glib/gmain.c:4123
>#4  0x00007f16d42d6fa8 in WTF::RunLoop::run() () at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#5  0x00007f16d427ac24 in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
>    at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#6  0x00007f16d42d7409 in  () at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#7  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#8  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 11 (Thread 0x7f1660ff9700 (LWP 5374)):
>#0  0x00007f16d575dae9 in poll () at /lib64/libc.so.6
>#1  0x00007f16d48ded2e in g_main_context_poll
>    (priority=<optimized out>, n_fds=1, fds=0x7f163c11db90, timeout=<optimized out>, context=0x7f163c07bd50)
>    at ../glib/gmain.c:4228
>#2  0x00007f16d48ded2e in g_main_context_iterate
>    (context=0x7f163c07bd50, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
>    at ../glib/gmain.c:3922
>#3  0x00007f16d48df0d3 in g_main_loop_run (loop=0x7f163c149890) at ../glib/gmain.c:4123
>#4  0x00007f16d42d6fa8 in WTF::RunLoop::run() () at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#5  0x00007f16d427ac24 in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
>    at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#6  0x00007f16d42d7409 in  () at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#7  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#8  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 10 (Thread 0x7f16357fa700 (LWP 5169)):
>#0  0x00007f16d575dae9 in poll () at /lib64/libc.so.6
>#1  0x00007f16d48ded2e in g_main_context_poll
>    (priority=<optimized out>, n_fds=1, fds=0x7f16100180f0, timeout=<optimized out>, context=0x7f16100b5d00)
>    at ../glib/gmain.c:4228
>#2  0x00007f16d48ded2e in g_main_context_iterate
>    (context=0x7f16100b5d00, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
>    at ../glib/gmain.c:3922
>#3  0x00007f16d48df0d3 in g_main_loop_run (loop=0x7f1610012820) at ../glib/gmain.c:4123
>#4  0x00007f16d42d6fa8 in WTF::RunLoop::run() () at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#5  0x00007f16d427ac24 in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
>    at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#6  0x00007f16d42d7409 in  () at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#7  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#8  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 9 (Thread 0x7f167bffd700 (LWP 4972)):
>#0  0x00007f16d575dae9 in poll () at /lib64/libc.so.6
>#1  0x00007f16d48ded2e in g_main_context_poll
>    (priority=<optimized out>, n_fds=2, fds=0x7f1668003340, timeout=<optimized out>, context=0x7f1668000b40)
>    at ../glib/gmain.c:4228
>#2  0x00007f16d48ded2e in g_main_context_iterate
>    (context=0x7f1668000b40, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
>    at ../glib/gmain.c:3922
>#3  0x00007f16d48df0d3 in g_main_loop_run (loop=0x7f1668002120) at ../glib/gmain.c:4123
>#4  0x00007f16d42d6fa8 in WTF::RunLoop::run() () at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#5  0x00007f16d427ac24 in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
>    at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#6  0x00007f16d42d7409 in  () at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#7  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#8  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 8 (Thread 0x7f16c97fa700 (LWP 4968)):
>#0  0x00007f16d575dae9 in poll () at /lib64/libc.so.6
>#1  0x00007f16d48ded2e in g_main_context_poll
>    (priority=<optimized out>, n_fds=2, fds=0x7f1670002f40, timeout=<optimized out>, context=0x7f1670000b40)
>    at ../glib/gmain.c:4228
>#2  0x00007f16d48ded2e in g_main_context_iterate
>    (context=0x7f1670000b40, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
>    at ../glib/gmain.c:3922
>#3  0x00007f16d48df0d3 in g_main_loop_run (loop=0x7f1670001d20) at ../glib/gmain.c:4123
>#4  0x00007f16d42d6fa8 in WTF::RunLoop::run() () at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#5  0x00007f16d427ac24 in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
>    at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#6  0x00007f16d42d7409 in  () at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#7  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#8  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 7 (Thread 0x7f16c9ffb700 (LWP 4967)):
>#0  0x00007f16d575dae9 in poll () at /lib64/libc.so.6
>#1  0x00007f16d48ded2e in g_main_context_poll
>    (priority=<optimized out>, n_fds=1, fds=0x7f166c002f40, timeout=<optimized out>, context=0x7f166c000b40)
>    at ../glib/gmain.c:4228
>#2  0x00007f16d48ded2e in g_main_context_iterate
>    (context=0x7f166c000b40, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
>    at ../glib/gmain.c:3922
>#3  0x00007f16d48df0d3 in g_main_loop_run (loop=0x7f166c001d20) at ../glib/gmain.c:4123
>#4  0x00007f16d42d6fa8 in WTF::RunLoop::run() () at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#5  0x00007f16d427ac24 in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
>    at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#6  0x00007f16d42d7409 in  () at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#7  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#8  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 6 (Thread 0x7f16ca7fc700 (LWP 4966)):
>#0  0x00007f16d575dae9 in poll () at /lib64/libc.so.6
>#1  0x00007f16d48ded2e in g_main_context_poll
>    (priority=<optimized out>, n_fds=1, fds=0x7f1674002b10, timeout=<optimized out>, context=0x7f1674000b40)
>    at ../glib/gmain.c:4228
>#2  0x00007f16d48ded2e in g_main_context_iterate
>    (context=0x7f1674000b40, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
>    at ../glib/gmain.c:3922
>#3  0x00007f16d48df0d3 in g_main_loop_run (loop=0x7f1674001d20) at ../glib/gmain.c:4123
>#4  0x00007f16d42d6fa8 in WTF::RunLoop::run() () at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#5  0x00007f16d427ac24 in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
>    at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#6  0x00007f16d42d7409 in  () at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#7  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#8  0x00007f16d57686af in clone () at /lib64/libc.so.6
>Thread 5 (Thread 0x7f16caffd700 (LWP 4965)):
>#0  0x00007f16d575dae9 in poll () at /lib64/libc.so.6
>#1  0x00007f16d48ded2e in g_main_context_poll
>    (priority=<optimized out>, n_fds=1, fds=0x7f16c0002710, timeout=<optimized out>, context=0x7f16c0000b40)
>    at ../glib/gmain.c:4228
>#2  0x00007f16d48ded2e in g_main_context_iterate
>    (context=0x7f16c0000b40, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
>    at ../glib/gmain.c:3922
>#3  0x00007f16d48df0d3 in g_main_loop_run (loop=0x7f16c0001460) at ../glib/gmain.c:4123
>#4  0x00007f16d42d6fa8 in WTF::RunLoop::run() () at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#5  0x00007f16d427ac24 in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) ()
>    at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#6  0x00007f16d42d7409 in  () at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#7  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#8  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 4 (Thread 0x7f16cb7fe700 (LWP 4964)):
>#0  0x00007f16d575dae9 in poll () at /lib64/libc.so.6
>#1  0x00007f16d48ded2e in g_main_context_poll
>    (priority=<optimized out>, n_fds=4, fds=0x7f1664005300, timeout=<optimized out>, context=0x7f16c4012a40)
>    at ../glib/gmain.c:4228
>#2  0x00007f16d48ded2e in g_main_context_iterate
>    (context=0x7f16c4012a40, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>)
>    at ../glib/gmain.c:3922
>#3  0x00007f16d48df0d3 in g_main_loop_run (loop=0x7f16c4012b30) at ../glib/gmain.c:4123
>#4  0x00007f16d4b211b6 in  () at /usr/lib64/libgio-2.0.so.0
>#5  0x00007f16d490767d in g_thread_proxy (data=0x55c5105bf590) at ../glib/gthread.c:805
>#6  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#7  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 3 (Thread 0x7f16cbfff700 (LWP 4963)):
>#0  0x00007f16d575dae9 in poll () at /lib64/libc.so.6
>#1  0x00007f16d48ded2e in g_main_context_poll
>    (priority=<optimized out>, n_fds=1, fds=0x55c5105f1e10, timeout=<optimized out>, context=0x55c5105f1d20)
>    at ../glib/gmain.c:4228
>#2  0x00007f16d48ded2e in g_main_context_iterate
>    (context=context@entry=0x55c5105f1d20, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:3922
>#3  0x00007f16d48dee4f in g_main_context_iteration (context=0x55c5105f1d20, may_block=1)
>    at ../glib/gmain.c:3988
>#4  0x00007f16d0c14e5d in  () at /usr/lib64/gio/modules/libdconfsettings.so
>#5  0x00007f16d490767d in g_thread_proxy (data=0x55c5105bf280) at ../glib/gthread.c:805
>#6  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#7  0x00007f16d57686af in clone () at /lib64/libc.so.6
>Thread 2 (Thread 0x7f16d0b95700 (LWP 4962)):
>#0  0x00007f16d575dae9 in poll () at /lib64/libc.so.6
>#1  0x00007f16d48ded2e in g_main_context_poll
>    (priority=<optimized out>, n_fds=1, fds=0x55c5105ef300, timeout=<optimized out>, context=0x55c5105ef210)
>    at ../glib/gmain.c:4228
>#2  0x00007f16d48ded2e in g_main_context_iterate
>    (context=context@entry=0x55c5105ef210, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:3922
>#3  0x00007f16d48dee4f in g_main_context_iteration (context=0x55c5105ef210, may_block=may_block@entry=1)
>    at ../glib/gmain.c:3988
>#4  0x00007f16d48deea1 in glib_worker_main (data=<optimized out>) at ../glib/gmain.c:5868
>#5  0x00007f16d490767d in g_thread_proxy (data=0x55c5105bf230) at ../glib/gthread.c:805
>#6  0x00007f16d2b84fab in start_thread () at /lib64/libpthread.so.0
>#7  0x00007f16d57686af in clone () at /lib64/libc.so.6
>
>Thread 1 (Thread 0x7f16d0f09400 (LWP 4960)):
>#0  0x00007f16d2b8e3dd in __lll_lock_wait () at /lib64/libpthread.so.0
>#1  0x00007f16d2b877d4 in pthread_mutex_lock () at /lib64/libpthread.so.0
>#2  0x00007f16c8f775a6 in gst_adaptive_demux_change_state
>    (element=0x7f1628007960, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstadaptivedemux.c:562
>#3  0x00007f16c8fec03d in gst_hls_demux_change_state
>    (element=0x7f1628007960, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gsthlsdemux.c:212
>#4  0x00007f16d280531e in gst_element_change_state
>    (element=element@entry=0x7f1628007960, transition=transition@entry=GST_STATE_CHANGE_PAUSED_TO_READY)
>    at gstelement.c:2952
>#5  0x00007f16d2805a69 in gst_element_set_state_func (element=0x7f1628007960, state=GST_STATE_READY)
>    at gstelement.c:2906
>#6  0x00007f16d27e2c28 in gst_bin_element_set_state
>    (next=GST_STATE_READY, current=GST_STATE_PAUSED, start_time=0, base_time=0, element=0x7f1628007960, bin=0x55c511e312b0) at gstbin.c:2604
>#7  0x00007f16d27e2c28 in gst_bin_change_state_func
>    (element=0x55c511e312b0, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstbin.c:2946
>#8  0x00007f1679d3fad2 in  () at /usr/lib64/gstreamer-1.0/libgstplayback.so
>#9  0x00007f16d280531e in gst_element_change_state
>    (element=element@entry=0x55c511e312b0, transition=transition@entry=GST_STATE_CHANGE_PAUSED_TO_READY)
>    at gstelement.c:2952
>#10 0x00007f16d2805a69 in gst_element_set_state_func (element=0x55c511e312b0, state=GST_STATE_READY)
>    at gstelement.c:2906
>#11 0x00007f16d27e2c28 in gst_bin_element_set_state
>    (next=GST_STATE_READY, current=GST_STATE_PAUSED, start_time=0, base_time=0, element=0x55c511e312b0, bin=0x7f15f0070c00) at gstbin.c:2604
>#12 0x00007f16d27e2c28 in gst_bin_change_state_func
>    (element=0x7f15f0070c00, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstbin.c:2946
>#13 0x00007f1679d5501a in  () at /usr/lib64/gstreamer-1.0/libgstplayback.so
>#14 0x00007f16d280531e in gst_element_change_state
>    (element=element@entry=0x7f15f0070c00, transition=transition@entry=GST_STATE_CHANGE_PAUSED_TO_READY)
>    at gstelement.c:2952
>#15 0x00007f16d2805a69 in gst_element_set_state_func (element=0x7f15f0070c00, state=GST_STATE_READY)
>    at gstelement.c:2906
>#16 0x00007f16d27e2c28 in gst_bin_element_set_state
>    (next=GST_STATE_READY, current=GST_STATE_PAUSED, start_time=0, base_time=0, element=0x7f15f0070c00, bin=0x55c5121c02e0) at gstbin.c:2604
>#17 0x00007f16d27e2c28 in gst_bin_change_state_func
>    (element=0x55c5121c02e0, transition=GST_STATE_CHANGE_PAUSED_TO_READY) at gstbin.c:2946
>#18 0x00007f1679d72185 in  () at /usr/lib64/gstreamer-1.0/libgstplayback.so
>#19 0x00007f16d280531e in gst_element_change_state
>    (element=element@entry=0x55c5121c02e0, transition=transition@entry=GST_STATE_CHANGE_PAUSED_TO_READY)
>    at gstelement.c:2952
>#20 0x00007f16d2805a69 in gst_element_set_state_func (element=0x55c5121c02e0, state=GST_STATE_NULL)
>    at gstelement.c:2906
>#21 0x00007f16d79c0164 in WebCore::MediaPlayerPrivateGStreamerBase::~MediaPlayerPrivateGStreamerBase() ()
>    at ../Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamerBase.cpp:288
>#22 0x00007f16d79b64cf in WebCore::MediaPlayerPrivateGStreamer::~MediaPlayerPrivateGStreamer() ()
>    at ../Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamer.cpp:176
>#23 0x00007f16d79b6819 in WebCore::MediaPlayerPrivateGStreamer::~MediaPlayerPrivateGStreamer() ()
>    at ../Source/WebCore/platform/graphics/gstreamer/MediaPlayerPrivateGStreamer.cpp:226
>#24 0x00007f16d745742e in std::default_delete<WebCore::MediaPlayerPrivateInterface>::operator()(WebCore::MediaPlayerPrivateInterface*) const () at /usr/include/c++/9/bits/unique_ptr.h:81
>#25 0x00007f16d745742e in std::unique_ptr<WebCore::MediaPlayerPrivateInterface, std::default_delete<WebCore::MediaPlayerPrivateInterface> >::~unique_ptr() () at /usr/include/c++/9/bits/unique_ptr.h:289
>#26 0x00007f16d745742e in WebCore::MediaPlayer::~MediaPlayer() ()
>    at ../Source/WebCore/platform/graphics/MediaPlayer.cpp:363
>#27 0x00007f16d74574a9 in WebCore::MediaPlayer::~MediaPlayer() ()
>    at ../Source/WebCore/platform/graphics/MediaPlayer.cpp:366
>#28 0x00007f16d7033901 in WTF::RefCounted<WebCore::MediaPlayer>::deref() const ()
>    at DerivedSources/ForwardingHeaders/wtf/RefCounted.h:145
>#29 0x00007f16d7033901 in WTF::derefIfNotNull<WebCore::MediaPlayer>(WebCore::MediaPlayer*) ()
>    at DerivedSources/ForwardingHeaders/wtf/RefPtr.h:44
>#30 0x00007f16d7033901 in WTF::RefPtr<WebCore::MediaPlayer, WTF::DumbPtrTraits<WebCore::MediaPlayer> >::~RefPtr() () at DerivedSources/ForwardingHeaders/wtf/RefPtr.h:69
>#31 0x00007f16d7033901 in WTF::RefPtr<WebCore::MediaPlayer, WTF::DumbPtrTraits<WebCore::MediaPlayer> >::operator=<WebCore::MediaPlayer>(WTF::Ref<WebCore::MediaPlayer, WTF::DumbPtrTraits<WebCore::MediaPlayer> >&&) ()
>    at DerivedSources/ForwardingHeaders/wtf/RefPtr.h:180
>#32 0x00007f16d7033901 in WebCore::HTMLMediaElement::createMediaPlayer() ()
>    at ../Source/WebCore/html/HTMLMediaElement.cpp:6671
>#33 0x00007f16d7034252 in WebCore::HTMLMediaElement::prepareForLoad() ()
>    at ../Source/WebCore/html/HTMLMediaElement.cpp:1236
>#34 0x00007f16d7034252 in WebCore::HTMLMediaElement::prepareForLoad() ()
>    at ../Source/WebCore/html/HTMLMediaElement.cpp:1205
>#35 0x00007f16d7034a21 in WebCore::HTMLMediaElement::load() ()
>    at ../Source/WebCore/html/HTMLMediaElement.cpp:1199
>#36 0x00007f16d65d5159 in jsHTMLMediaElementPrototypeFunctionLoadBody ()
>    at DerivedSources/WebCore/JSHTMLMediaElement.cpp:1498
>#37 0x00007f16d65d5159 in call<WebCore::jsHTMLMediaElementPrototypeFunctionLoadBody> ()
>    at ../Source/WebCore/bindings/js/JSDOMOperation.h:53
>#38 0x00007f16d65d5159 in WebCore::jsHTMLMediaElementPrototypeFunctionLoad(JSC::ExecState*) ()
>    at DerivedSources/WebCore/JSHTMLMediaElement.cpp:1504
>#39 0x00007f167bfff16b in  ()
>#40 0x00007ffc8b7225a0 in  ()
>#41 0x00007f16d3d3705b in  () at /usr/lib64/libjavascriptcoregtk-4.0.so.18
>#42 0x0000000000000000 in  ()
>

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Attachments on bug 199217: 372891