crash log for WPEWebProcess (pid 247):

[New LWP 552]
[New LWP 247]
[New LWP 294]
[New LWP 390]
[New LWP 518]
[New LWP 281]
[New LWP 279]
[New LWP 296]
[New LWP 359]
[New LWP 523]
[New LWP 397]
[New LWP 441]
[New LWP 302]
[New LWP 392]
[New LWP 567]
[New LWP 562]
[New LWP 360]
[New LWP 384]
[New LWP 393]
[New LWP 394]
[New LWP 385]
[New LWP 517]
[New LWP 395]
[New LWP 386]
[New LWP 533]
[New LWP 396]
[New LWP 387]
[New LWP 377]
[New LWP 398]
[New LWP 388]
[New LWP 399]
[New LWP 389]
[New LWP 400]
[New LWP 391]
[New LWP 534]
[New LWP 545]
[New LWP 540]
[New LWP 546]
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/usr/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/app/webkit/WebKitBuild/Release/bin/WPEWebProcess 12 16 --configure-jsc-for-tes'.
Program terminated with signal SIGSEGV, Segmentation fault.
#0  0x00007f8f2f7803a0 in WebCore::MediaPlayerPrivateGStreamer::pushDMABufToCompositor() () from /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
[Current thread is 1 (Thread 0x7f8e54ff9640 (LWP 552))]

Thread 38 (Thread 0x7f8e557fa640 (LWP 546)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f8f2ba47afe in g_cond_wait (cond=cond@entry=0x7f8e440069f8, mutex=mutex@entry=0x7f8e440069e8) at ../glib/gthread-posix.c:1575
#2  0x00007f8f2882ccf5 in _gst_data_queue_wait_non_empty (queue=<optimized out>) at ../libs/gst/base/gstdataqueue.c:554
#3  gst_data_queue_pop (queue=0x7f8e44006a40, item=item@entry=0x7f8e557f9ab0) at ../libs/gst/base/gstdataqueue.c:596
#4  0x00007f8ebc15e2f7 in gst_multi_queue_loop (pad=<optimized out>) at ../plugins/elements/gstmultiqueue.c:2203
#5  0x00007f8f2b81dd41 in gst_task_func (task=0x5640c35dccb0 [GstTask|multiqueue0:src_0]) at ../gst/gsttask.c:384
#6  0x00007f8f2ba2a692 in g_thread_pool_thread_proxy (data=<optimized out>) at ../glib/gthreadpool.c:350
#7  0x00007f8f2ba27722 in g_thread_proxy (data=0x7f8e4400cc60) at ../glib/gthread.c:827
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 37 (Thread 0x7f8e567fc640 (LWP 540)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f8f2ba47afe in g_cond_wait (cond=cond@entry=0x5640c35da810, mutex=mutex@entry=0x5640c35da820) at ../glib/gthread-posix.c:1575
#2  0x00007f8f28859578 in gst_app_src_create (bsrc=0x5640c35daae0 [GstBaseSrc|videosrc0], offset=<optimized out>, size=<optimized out>, buf=<optimized out>) at ../gst-libs/gst/app/gstappsrc.c:1785
#3  0x00007f8f2880e118 in gst_base_src_get_range (src=src@entry=0x5640c35daae0 [GstBaseSrc|videosrc0], offset=18446744073709551615, length=<optimized out>, buf=buf@entry=0x7f8e567fbab0) at ../libs/gst/base/gstbasesrc.c:2592
#4  0x00007f8f288140b9 in gst_base_src_loop (pad=0x5640c358c9c0 [GstPad|src]) at ../libs/gst/base/gstbasesrc.c:2916
#5  0x00007f8f2b81dd41 in gst_task_func (task=0x5640c35dc050 [GstTask|videosrc0:src]) at ../gst/gsttask.c:384
#6  0x00007f8f2ba2a692 in g_thread_pool_thread_proxy (data=<optimized out>) at ../glib/gthreadpool.c:350
#7  0x00007f8f2ba27722 in g_thread_proxy (data=0x7f8e50002360) at ../glib/gthread.c:827
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 36 (Thread 0x7f8e55ffb640 (LWP 545)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f8f2ba47afe in g_cond_wait (cond=cond@entry=0x7f8e4c008068, mutex=mutex@entry=0x7f8e4c008058) at ../glib/gthread-posix.c:1575
#2  0x00007f8f2882ccf5 in _gst_data_queue_wait_non_empty (queue=<optimized out>) at ../libs/gst/base/gstdataqueue.c:554
#3  gst_data_queue_pop (queue=0x7f8e4c0080b0, item=item@entry=0x7f8e55ffaab0) at ../libs/gst/base/gstdataqueue.c:596
#4  0x00007f8ebc15e2f7 in gst_multi_queue_loop (pad=<optimized out>) at ../plugins/elements/gstmultiqueue.c:2203
#5  0x00007f8f2b81dd41 in gst_task_func (task=0x5640c35dc5f0 [GstTask|multiqueue1:src_0]) at ../gst/gsttask.c:384
#6  0x00007f8f2ba2a692 in g_thread_pool_thread_proxy (data=<optimized out>) at ../glib/gthreadpool.c:350
#7  0x00007f8f2ba27722 in g_thread_proxy (data=0x5640c35d4860) at ../glib/gthread.c:827
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 35 (Thread 0x7f8e56ffd640 (LWP 534)):
#0  0x00007f8f2b3130cd in __GI___poll (fds=0x7f8e500026b0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8f2ba4df9e in g_main_context_poll (priority=<optimized out>, n_fds=2, fds=0x7f8e500026b0, timeout=<optimized out>, context=0x7f8e50000b70) at ../glib/gmain.c:4518
#2  g_main_context_iterate.constprop.0 (context=0x7f8e50000b70, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4208
#3  0x00007f8f2b9f72af in g_main_loop_run (loop=0x7f8e500024c0) at ../glib/gmain.c:4413
#4  0x00007f8f278fac37 in Impl::AudioThread::s_threadEntrypoint(void*) (data=0x7ffded3849f0) at ../src/extensions/audio.cpp:139
#5  0x00007f8f2ba27722 in g_thread_proxy (data=0x7f8eb0005b60) at ../glib/gthread.c:827
#6  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#7  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 34 (Thread 0x7f8eab7fe640 (LWP 391)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f8eac00425c) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8eac00425c, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8eac00425c, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b2954d1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=<optimized out>, cond=0x7f8eac004230) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f8eac004230, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007f8ec876b83d in cnd_wait () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#6  0x00007f8ec8d5ea4b in thread_function () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#7  0x00007f8ec876b76c in impl_thrd_routine () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 33 (Thread 0x7f8ea6ff5640 (LWP 400)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f8eac01ac9c) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8eac01ac9c, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8eac01ac9c, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b2954d1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=<optimized out>, cond=0x7f8eac01ac70) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f8eac01ac70, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007f8ec876b83d in cnd_wait () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#6  0x00007f8ec871a2bb in util_queue_thread_func () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#7  0x00007f8ec876b76c in impl_thrd_routine () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 32 (Thread 0x7f8eb4ff9640 (LWP 389)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f8eac003f9c) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8eac003f9c, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8eac003f9c, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b2954d1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=<optimized out>, cond=0x7f8eac003f70) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f8eac003f70, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007f8ec876b83d in cnd_wait () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#6  0x00007f8ec8d5ea4b in thread_function () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#7  0x00007f8ec876b76c in impl_thrd_routine () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 31 (Thread 0x7f8ea77f6640 (LWP 399)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f8eac019940) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8eac019940, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8eac019940, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b2954d1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=<optimized out>, cond=0x7f8eac019918) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f8eac019918, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007f8ec876b83d in cnd_wait () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#6  0x00007f8ec8d5b63b in lp_cs_tpool_worker () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#7  0x00007f8ec876b76c in impl_thrd_routine () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 30 (Thread 0x7f8eb57fa640 (LWP 388)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f8eac003e3c) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8eac003e3c, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8eac003e3c, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b2954d1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=<optimized out>, cond=0x7f8eac003e10) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f8eac003e10, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007f8ec876b83d in cnd_wait () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#6  0x00007f8ec8d5ea4b in thread_function () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#7  0x00007f8ec876b76c in impl_thrd_routine () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 29 (Thread 0x7f8ea7ff7640 (LWP 398)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f8eac019940) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8eac019940, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8eac019940, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b2954d1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=<optimized out>, cond=0x7f8eac019918) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f8eac019918, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007f8ec876b83d in cnd_wait () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#6  0x00007f8ec8d5b63b in lp_cs_tpool_worker () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#7  0x00007f8ec876b76c in impl_thrd_routine () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 28 (Thread 0x7f8eb7fff640 (LWP 377)):
#0  0x00007f8f2b3130cd in __GI___poll (fds=0x7f8eac001e20, nfds=2, timeout=500) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8f2ba4df9e in g_main_context_poll (priority=<optimized out>, n_fds=2, fds=0x7f8eac001e20, timeout=<optimized out>, context=0x7f8eac000b70) at ../glib/gmain.c:4518
#2  g_main_context_iterate.constprop.0 (context=0x7f8eac000b70, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4208
#3  0x00007f8f2b9f72af in g_main_loop_run (loop=0x7f8eac001cc0) at ../glib/gmain.c:4413
#4  0x00007f8f2f6bf900 in WTF::RunLoop::run() () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#5  0x00007f8f2f648aa6 in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#6  0x00007f8f2f6c3559 in WTF::wtfThreadEntryPoint(void*) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#7  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#8  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 27 (Thread 0x7f8eb5ffb640 (LWP 387)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f8eac003cdc) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8eac003cdc, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8eac003cdc, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b2954d1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=<optimized out>, cond=0x7f8eac003cb0) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f8eac003cb0, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007f8ec876b83d in cnd_wait () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#6  0x00007f8ec8d5ea4b in thread_function () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#7  0x00007f8ec876b76c in impl_thrd_routine () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 26 (Thread 0x7f8ea8ff9640 (LWP 396)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f8eac019940) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8eac019940, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8eac019940, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b2954d1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=<optimized out>, cond=0x7f8eac019918) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f8eac019918, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007f8ec876b83d in cnd_wait () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#6  0x00007f8ec8d5b63b in lp_cs_tpool_worker () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#7  0x00007f8ec876b76c in impl_thrd_routine () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 25 (Thread 0x7f8e577fe640 (LWP 533)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x5640c32f8378) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x5640c32f8378, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x5640c32f8378, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b2954d1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=<optimized out>, cond=0x5640c32f8350) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x5640c32f8350, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007f8ec876b83d in cnd_wait () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#6  0x00007f8ec871a2bb in util_queue_thread_func () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#7  0x00007f8ec876b76c in impl_thrd_routine () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 24 (Thread 0x7f8eb67fc640 (LWP 386)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f8eac003b7c) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8eac003b7c, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8eac003b7c, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b2954d1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=<optimized out>, cond=0x7f8eac003b50) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f8eac003b50, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007f8ec876b83d in cnd_wait () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#6  0x00007f8ec8d5ea4b in thread_function () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#7  0x00007f8ec876b76c in impl_thrd_routine () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 23 (Thread 0x7f8ea97fa640 (LWP 395)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f8eac019940) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8eac019940, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8eac019940, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b2954d1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=<optimized out>, cond=0x7f8eac019918) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f8eac019918, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007f8ec876b83d in cnd_wait () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#6  0x00007f8ec8d5b63b in lp_cs_tpool_worker () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#7  0x00007f8ec876b76c in impl_thrd_routine () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 22 (Thread 0x7f8ea55f3640 (LWP 517)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x7f8ea55f2980, op=393, expected=0, futex_word=0x7f8f1b2e4160) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8f1b2e4160, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x7f8ea55f2980, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8f1b2e4160, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x7f8ea55f2980, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b295812 in __pthread_cond_wait_common (abstime=0x7f8ea55f2980, clockid=0, mutex=<optimized out>, cond=0x7f8f1b2e4138) at pthread_cond_wait.c:503
#4  ___pthread_cond_timedwait64 (cond=0x7f8f1b2e4138, mutex=<optimized out>, abstime=0x7f8ea55f2980) at pthread_cond_wait.c:643
#5  0x00007f8f2f6c3e88 in WTF::ThreadCondition::timedWait(WTF::Mutex&, WTF::WallTime) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#6  0x00007f8f2f642c3b in WTF::ParkingLot::parkConditionallyImpl(void const*, WTF::ScopedLambda<bool ()> const&, WTF::ScopedLambda<void ()> const&, WTF::TimeWithDynamicClockType const&) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#7  0x00007f8f2f611031 in WTF::Detail::CallableWrapper<WTF::AutomaticThread::start(WTF::AbstractLocker const&)::{lambda()#1}, void>::call() () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#8  0x00007f8f2f648aa6 in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#9  0x00007f8f2f6c3559 in WTF::wtfThreadEntryPoint(void*) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#10 0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#11 0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 21 (Thread 0x7f8eb6ffd640 (LWP 385)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f8eac003a1c) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8eac003a1c, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8eac003a1c, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b2954d1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=<optimized out>, cond=0x7f8eac0039f0) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f8eac0039f0, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007f8ec876b83d in cnd_wait () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#6  0x00007f8ec8d5ea4b in thread_function () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#7  0x00007f8ec876b76c in impl_thrd_routine () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 20 (Thread 0x7f8ea9ffb640 (LWP 394)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f8eac019940) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8eac019940, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8eac019940, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b2954d1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=<optimized out>, cond=0x7f8eac019918) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f8eac019918, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007f8ec876b83d in cnd_wait () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#6  0x00007f8ec8d5b63b in lp_cs_tpool_worker () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#7  0x00007f8ec876b76c in impl_thrd_routine () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 19 (Thread 0x7f8eaa7fc640 (LWP 393)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f8eac019940) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8eac019940, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8eac019940, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b2954d1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=<optimized out>, cond=0x7f8eac019918) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f8eac019918, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007f8ec876b83d in cnd_wait () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#6  0x00007f8ec8d5b63b in lp_cs_tpool_worker () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#7  0x00007f8ec876b76c in impl_thrd_routine () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 18 (Thread 0x7f8eb77fe640 (LWP 384)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f8eac0038bc) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8eac0038bc, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8eac0038bc, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b2954d1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=<optimized out>, cond=0x7f8eac003890) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f8eac003890, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007f8ec876b83d in cnd_wait () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#6  0x00007f8ec8d5ea4b in thread_function () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#7  0x00007f8ec876b76c in impl_thrd_routine () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 17 (Thread 0x7f8ebece1640 (LWP 360)):
#0  0x00007f8f2b3130cd in __GI___poll (fds=0x5640c340aa20, nfds=3, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8f2ba4df9e in g_main_context_poll (priority=<optimized out>, n_fds=3, fds=0x5640c340aa20, timeout=<optimized out>, context=0x5640c340ee00) at ../glib/gmain.c:4518
#2  g_main_context_iterate.constprop.0 (context=0x5640c340ee00, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4208
#3  0x00007f8f2b9f72af in g_main_loop_run (loop=0x5640c340eef0) at ../glib/gmain.c:4413
#4  0x00007f8f27fe3a92 in gdbus_shared_thread_func (user_data=0x5640c340ab60) at ../gio/gdbusprivate.c:282
#5  0x00007f8f2ba27722 in g_thread_proxy (data=0x5640c353b640) at ../glib/gthread.c:827
#6  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#7  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 16 (Thread 0x7f8e37fff640 (LWP 562)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f8e3c02d830) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8e3c02d830, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8e3c02d830, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b2954d1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=<optimized out>, cond=0x7f8e3c02d808) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f8e3c02d808, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007f8ec876b83d in cnd_wait () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#6  0x00007f8ec871a2bb in util_queue_thread_func () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#7  0x00007f8ec876b76c in impl_thrd_routine () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 15 (Thread 0x7f8e377fe640 (LWP 567)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f8f2ba48097 in g_cond_wait_until (cond=<optimized out>, mutex=0x7f8e3c013110, end_time=<optimized out>) at ../glib/gthread-posix.c:1654
#2  0x00007f8f2b9c6591 in g_async_queue_pop_intern_unlocked (queue=0x7f8e3c013110, wait=1, end_time=9727340972) at ../glib/gasyncqueue.c:422
#3  0x00007f8f2ba2a6ea in g_thread_pool_wait_for_new_task (pool=0x7f8e3c00b120) at ../glib/gthreadpool.c:274
#4  g_thread_pool_thread_proxy (data=<optimized out>) at ../glib/gthreadpool.c:339
#5  0x00007f8f2ba27722 in g_thread_proxy (data=0x7f8e38008cc0) at ../glib/gthread.c:827
#6  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#7  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 14 (Thread 0x7f8eaaffd640 (LWP 392)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f8eac019940) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8eac019940, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8eac019940, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b2954d1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=<optimized out>, cond=0x7f8eac019918) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f8eac019918, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007f8ec876b83d in cnd_wait () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#6  0x00007f8ec8d5b63b in lp_cs_tpool_worker () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#7  0x00007f8ec876b76c in impl_thrd_routine () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 13 (Thread 0x7f8ed8faf640 (LWP 302)):
#0  0x00007f8f2b3130cd in __GI___poll (fds=0x7f8ec4004bf0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8f2ba4df9e in g_main_context_poll (priority=<optimized out>, n_fds=2, fds=0x7f8ec4004bf0, timeout=<optimized out>, context=0x7f8ec4000b70) at ../glib/gmain.c:4518
#2  g_main_context_iterate.constprop.0 (context=0x7f8ec4000b70, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4208
#3  0x00007f8f2b9f72af in g_main_loop_run (loop=0x7f8ec4003e70) at ../glib/gmain.c:4413
#4  0x00007f8f2f6bf900 in WTF::RunLoop::run() () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#5  0x00007f8f2f648aa6 in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#6  0x00007f8f2f6c3559 in WTF::wtfThreadEntryPoint(void*) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#7  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#8  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 12 (Thread 0x7f8ea67f4640 (LWP 441)):
#0  0x00007f8f2b3130cd in __GI___poll (fds=0x7f8e58003270, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8f2ba4df9e in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7f8e58003270, timeout=<optimized out>, context=0x7f8e58000b70) at ../glib/gmain.c:4518
#2  g_main_context_iterate.constprop.0 (context=0x7f8e58000b70, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4208
#3  0x00007f8f2b9f72af in g_main_loop_run (loop=0x7f8e580024f0) at ../glib/gmain.c:4413
#4  0x00007f8f2f6bf900 in WTF::RunLoop::run() () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#5  0x00007f8f2f648aa6 in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#6  0x00007f8f2f6c3559 in WTF::wtfThreadEntryPoint(void*) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#7  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#8  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 11 (Thread 0x7f8ea87f8640 (LWP 397)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f8eac019940) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8eac019940, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8eac019940, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b2954d1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=<optimized out>, cond=0x7f8eac019918) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f8eac019918, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007f8ec876b83d in cnd_wait () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#6  0x00007f8ec8d5b63b in lp_cs_tpool_worker () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#7  0x00007f8ec876b76c in impl_thrd_routine () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 10 (Thread 0x7f8e57fff640 (LWP 523)):
#0  syscall () at ../sysdeps/unix/sysv/linux/x86_64/syscall.S:38
#1  0x00007f8f2ba48097 in g_cond_wait_until (cond=<optimized out>, mutex=0x5640c3468460, end_time=<optimized out>) at ../glib/gthread-posix.c:1654
#2  0x00007f8f2b9c6591 in g_async_queue_pop_intern_unlocked (queue=0x5640c3468460, wait=1, end_time=9727270480) at ../glib/gasyncqueue.c:422
#3  0x00007f8f2ba2a6ea in g_thread_pool_wait_for_new_task (pool=0x5640c3468900) at ../glib/gthreadpool.c:274
#4  g_thread_pool_thread_proxy (data=<optimized out>) at ../glib/gthreadpool.c:339
#5  0x00007f8f2ba27722 in g_thread_proxy (data=0x7f8eb0005b00) at ../glib/gthread.c:827
#6  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#7  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 9 (Thread 0x7f8ebf4e2640 (LWP 359)):
#0  0x00007f8f2b3130cd in __GI___poll (fds=0x5640c34da390, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8f2ba4df9e in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x5640c34da390, timeout=<optimized out>, context=0x5640c3506db0) at ../glib/gmain.c:4518
#2  g_main_context_iterate.constprop.0 (context=context@entry=0x5640c3506db0, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4208
#3  0x00007f8f2b9f54a3 in g_main_context_iteration (context=0x5640c3506db0, may_block=may_block@entry=1) at ../glib/gmain.c:4278
#4  0x00007f8f2b9f54f9 in glib_worker_main (data=<optimized out>) at ../glib/gmain.c:6180
#5  0x00007f8f2ba27722 in g_thread_proxy (data=0x5640c347e640) at ../glib/gthread.c:827
#6  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#7  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 8 (Thread 0x7f8ed97b0640 (LWP 296)):
#0  0x00007f8f2b3130cd in __GI___poll (fds=0x7f8ed00047f0, nfds=2, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8f2ba4df9e in g_main_context_poll (priority=<optimized out>, n_fds=2, fds=0x7f8ed00047f0, timeout=<optimized out>, context=0x7f8ed0000b70) at ../glib/gmain.c:4518
#2  g_main_context_iterate.constprop.0 (context=0x7f8ed0000b70, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4208
#3  0x00007f8f2b9f72af in g_main_loop_run (loop=0x7f8ed0003640) at ../glib/gmain.c:4413
#4  0x00007f8f2f6bf900 in WTF::RunLoop::run() () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#5  0x00007f8f2f648aa6 in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#6  0x00007f8f2f6c3559 in WTF::wtfThreadEntryPoint(void*) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#7  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#8  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 7 (Thread 0x7f8f1cfb5640 (LWP 279)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x7f8f1cfb4b80, op=393, expected=0, futex_word=0x7f8f1cfc4690) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8f1cfc4690, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x7f8f1cfb4b80, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8f1cfc4690, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x7f8f1cfb4b80, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b295812 in __pthread_cond_wait_common (abstime=0x7f8f1cfb4b80, clockid=0, mutex=<optimized out>, cond=0x7f8f1cfc4668) at pthread_cond_wait.c:503
#4  ___pthread_cond_timedwait64 (cond=0x7f8f1cfc4668, mutex=<optimized out>, abstime=0x7f8f1cfb4b80) at pthread_cond_wait.c:643
#5  0x00007f8f31de5083 in scavenger_thread_main () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#6  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#7  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 6 (Thread 0x7f8eda7b2640 (LWP 281)):
#0  0x00007f8f2b3130cd in __GI___poll (fds=0x7f8ed4005040, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8f2ba4df9e in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7f8ed4005040, timeout=<optimized out>, context=0x7f8ed4000b70) at ../glib/gmain.c:4518
#2  g_main_context_iterate.constprop.0 (context=0x7f8ed4000b70, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4208
#3  0x00007f8f2b9f72af in g_main_loop_run (loop=0x7f8ed4003e70) at ../glib/gmain.c:4413
#4  0x00007f8f2f6bf900 in WTF::RunLoop::run() () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#5  0x00007f8f2f648aa6 in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#6  0x00007f8f2f6c3559 in WTF::wtfThreadEntryPoint(void*) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#7  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#8  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 5 (Thread 0x7f8ea4df2640 (LWP 518)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x7f8ea4df1980, op=393, expected=0, futex_word=0x7f8f1b2847e0) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8f1b2847e0, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x7f8ea4df1980, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8f1b2847e0, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x7f8ea4df1980, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b295812 in __pthread_cond_wait_common (abstime=0x7f8ea4df1980, clockid=0, mutex=<optimized out>, cond=0x7f8f1b2847b8) at pthread_cond_wait.c:503
#4  ___pthread_cond_timedwait64 (cond=0x7f8f1b2847b8, mutex=<optimized out>, abstime=0x7f8ea4df1980) at pthread_cond_wait.c:643
#5  0x00007f8f2f6c3e88 in WTF::ThreadCondition::timedWait(WTF::Mutex&, WTF::WallTime) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#6  0x00007f8f2f642c3b in WTF::ParkingLot::parkConditionallyImpl(void const*, WTF::ScopedLambda<bool ()> const&, WTF::ScopedLambda<void ()> const&, WTF::TimeWithDynamicClockType const&) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#7  0x00007f8f2f611031 in WTF::Detail::CallableWrapper<WTF::AutomaticThread::start(WTF::AbstractLocker const&)::{lambda()#1}, void>::call() () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#8  0x00007f8f2f648aa6 in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#9  0x00007f8f2f6c3559 in WTF::wtfThreadEntryPoint(void*) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#10 0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#11 0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 4 (Thread 0x7f8eabfff640 (LWP 390)):
#0  __futex_abstimed_wait_common64 (private=0, cancel=true, abstime=0x0, op=393, expected=0, futex_word=0x7f8eac0040fc) at futex-internal.c:57
#1  __futex_abstimed_wait_common (futex_word=futex_word@entry=0x7f8eac0040fc, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0, cancel=cancel@entry=true) at futex-internal.c:87
#2  0x00007f8f2b292c1f in __GI___futex_abstimed_wait_cancelable64 (futex_word=futex_word@entry=0x7f8eac0040fc, expected=expected@entry=0, clockid=clockid@entry=0, abstime=abstime@entry=0x0, private=private@entry=0) at futex-internal.c:139
#3  0x00007f8f2b2954d1 in __pthread_cond_wait_common (abstime=0x0, clockid=0, mutex=<optimized out>, cond=0x7f8eac0040d0) at pthread_cond_wait.c:503
#4  ___pthread_cond_wait (cond=0x7f8eac0040d0, mutex=<optimized out>) at pthread_cond_wait.c:618
#5  0x00007f8ec876b83d in cnd_wait () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#6  0x00007f8ec8d5ea4b in thread_function () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#7  0x00007f8ec876b76c in impl_thrd_routine () at /usr/lib/x86_64-linux-gnu/GL/default/lib/dri/swrast_dri.so
#8  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#9  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 3 (Thread 0x7f8ed9fb1640 (LWP 294)):
#0  0x00007f8f2b3130cd in __GI___poll (fds=0x7f8ecc004bf0, nfds=1, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8f2ba4df9e in g_main_context_poll (priority=<optimized out>, n_fds=1, fds=0x7f8ecc004bf0, timeout=<optimized out>, context=0x7f8ecc000b70) at ../glib/gmain.c:4518
#2  g_main_context_iterate.constprop.0 (context=0x7f8ecc000b70, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4208
#3  0x00007f8f2b9f72af in g_main_loop_run (loop=0x7f8ecc003a40) at ../glib/gmain.c:4413
#4  0x00007f8f2f6bf900 in WTF::RunLoop::run() () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#5  0x00007f8f2f648aa6 in WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#6  0x00007f8f2f6c3559 in WTF::wtfThreadEntryPoint(void*) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#7  0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#8  0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

Thread 2 (Thread 0x7f8f24fb89c0 (LWP 247)):
#0  0x00007f8f2b3130cd in __GI___poll (fds=0x5640c3158fb0, nfds=2, timeout=16) at ../sysdeps/unix/sysv/linux/poll.c:29
#1  0x00007f8f2ba4df9e in g_main_context_poll (priority=<optimized out>, n_fds=2, fds=0x5640c3158fb0, timeout=<optimized out>, context=0x5640c3151760) at ../glib/gmain.c:4518
#2  g_main_context_iterate.constprop.0 (context=0x5640c3151760, block=block@entry=1, dispatch=dispatch@entry=1, self=<optimized out>) at ../glib/gmain.c:4208
#3  0x00007f8f2b9f72af in g_main_loop_run (loop=0x5640c3152910) at ../glib/gmain.c:4413
#4  0x00007f8f2f6bf900 in WTF::RunLoop::run() () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#5  0x00007f8f2e128696 in WebKit::WebProcessMain(int, char**) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#6  0x00007f8f2b23054a in __libc_start_call_main (main=main@entry=0x5640c1806880 <main>, argc=argc@entry=4, argv=argv@entry=0x7ffded3852f8) at ../sysdeps/nptl/libc_start_call_main.h:58
#7  0x00007f8f2b23060b in __libc_start_main_impl (main=0x5640c1806880 <main>, argc=4, argv=0x7ffded3852f8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=<optimized out>) at ../csu/libc-start.c:389
#8  0x00005640c18067b5 in _start () at ../sysdeps/x86_64/start.S:115

Thread 1 (Thread 0x7f8e54ff9640 (LWP 552)):
#0  0x00007f8f2f7803a0 in WebCore::MediaPlayerPrivateGStreamer::pushDMABufToCompositor() () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#1  0x00007f8f2f76e05c in webKitVideoSinkSetMediaPlayerPrivate(_GstElement*, WebCore::MediaPlayerPrivateGStreamer*)::{lambda(_GstElement*, WebCore::MediaPlayerPrivateGStreamer*)#2}::_FUN(_GstElement*, WebCore::MediaPlayerPrivateGStreamer*) () at /app/webkit/WebKitBuild/Release/lib/libWPEWebKit-2.0.so.1
#2  0x00007f8f256c6056 in ffi_call_unix64 () at ../src/x86/unix64.S:104
#3  0x00007f8f256c4add in ffi_call_int (cif=<optimized out>, fn=<optimized out>, rvalue=<optimized out>, avalue=<optimized out>, closure=<optimized out>) at ../src/x86/ffi64.c:673
#4  0x00007f8f256c52b3 in ffi_call (cif=cif@entry=0x7f8e54ff7780, fn=fn@entry=0x7f8f2f76df10 <webKitVideoSinkSetMediaPlayerPrivate(_GstElement*, WebCore::MediaPlayerPrivateGStreamer*)::{lambda(_GstElement*, WebCore::MediaPlayerPrivateGStreamer*)#2}::_FUN(_GstElement*, WebCore::MediaPlayerPrivateGStreamer*)>, rvalue=rvalue@entry=0x7f8e54ff76e0, avalue=avalue@entry=0x7f8e54ff76a0) at ../src/x86/ffi64.c:710
#5  0x00007f8f27e7c4c0 in g_cclosure_marshal_generic_va (closure=<optimized out>, return_value=<optimized out>, instance=<optimized out>, args_list=<optimized out>, marshal_data=<optimized out>, n_params=<optimized out>, param_types=<optimized out>) at ../gobject/gclosure.c:1648
#6  0x00007f8f27e94480 in _g_closure_invoke_va (param_types=<optimized out>, n_params=<optimized out>, args=0x7f8e54ff7990, instance=0x5640c35d0e20, return_value=<optimized out>, closure=0x5640c35d2a30) at ../gobject/gclosure.c:893
#7  g_signal_emit_valist (instance=<optimized out>, signal_id=<optimized out>, detail=<optimized out>, var_args=var_args@entry=0x7f8e54ff7990) at ../gobject/gsignal.c:3440
#8  0x00007f8f27e945b3 in g_signal_emit (instance=instance@entry=0x5640c35d0e20, signal_id=<optimized out>, detail=detail@entry=0) at ../gobject/gsignal.c:3587
#9  0x00007f8f2885b48d in gst_app_sink_render_common (psink=0x5640c35d0e20 [GstBaseSink|webkit-dmabuf-video-appsink], data=<optimized out>, is_list=<optimized out>) at ../gst-libs/gst/app/gstappsink.c:1103
#10 0x00007f8f2883205e in gst_base_sink_chain_unlocked.constprop.0 (basesink=0x5640c35d0e20 [GstBaseSink|webkit-dmabuf-video-appsink], obj=0x7f8e4400a7e0, is_list=<optimized out>, pad=<optimized out>) at ../libs/gst/base/gstbasesink.c:3952
#11 0x00007f8f287ff150 in gst_base_sink_chain_main (basesink=0x5640c35d0e20 [GstBaseSink|webkit-dmabuf-video-appsink], pad=<optimized out>, obj=0x7f8e4400a7e0, is_list=0) at ../libs/gst/base/gstbasesink.c:4078
#12 0x00007f8f2b7f1775 in gst_pad_chain_data_unchecked (pad=pad@entry=0x5640c358c770 [GstPad|sink], type=type@entry=4112, data=data@entry=0x7f8e4400a7e0) at ../gst/gstpad.c:4463
#13 0x00007f8f2b7f5114 in gst_pad_push_data (pad=pad@entry=0x5640c3570ec0 [GstPad|proxypad5], type=type@entry=4112, data=data@entry=0x7f8e4400a7e0) at ../gst/gstpad.c:4739
#14 0x00007f8f2b7f54de in gst_pad_push (pad=0x5640c3570ec0 [GstPad|proxypad5], buffer=0x7f8e4400a7e0 [None]) at ../gst/gstpad.c:4858
#15 0x00007f8f2b7daaeb in gst_proxy_pad_chain_default (pad=<optimized out>, parent=<optimized out>, buffer=0x7f8e4400a7e0 [None]) at ../gst/gstghostpad.c:127
#16 0x00007f8f2b7f1775 in gst_pad_chain_data_unchecked (pad=pad@entry=0x5640c356ef00 [GstPad|sink], type=type@entry=4112, data=data@entry=0x7f8e4400a7e0) at ../gst/gstpad.c:4463
#17 0x00007f8f2b7f5114 in gst_pad_push_data (pad=pad@entry=0x7f8e4c00d8b0 [GstPad|src], type=type@entry=4112, data=data@entry=0x7f8e4400a7e0) at ../gst/gstpad.c:4739
#18 0x00007f8f2b7f54de in gst_pad_push (pad=0x7f8e4c00d8b0 [GstPad|src], buffer=0x7f8e4400a7e0 [None]) at ../gst/gstpad.c:4858
#19 0x00007f8f2b7daaeb in gst_proxy_pad_chain_default (pad=<optimized out>, parent=<optimized out>, buffer=0x7f8e4400a7e0 [None]) at ../gst/gstghostpad.c:127
#20 0x00007f8f2b7f1775 in gst_pad_chain_data_unchecked (pad=pad@entry=0x7f8e4c011830 [GstPad|proxypad14], type=type@entry=4112, data=data@entry=0x7f8e4400a7e0) at ../gst/gstpad.c:4463
#21 0x00007f8f2b7f5114 in gst_pad_push_data (pad=pad@entry=0x7f8e44009330 [GstPad|src], type=type@entry=4112, data=data@entry=0x7f8e4400a7e0) at ../gst/gstpad.c:4739
#22 0x00007f8f2b7f54de in gst_pad_push (pad=0x7f8e44009330 [GstPad|src], buffer=0x7f8e4400a7e0 [None]) at ../gst/gstpad.c:4858
#23 0x00007f8f2881b31b in gst_base_transform_chain (pad=<optimized out>, parent=0x7f8e38045070 [GstObject|conv2], buffer=<optimized out>) at ../libs/gst/base/gstbasetransform.c:2391
#24 0x00007f8f2b7f1775 in gst_pad_chain_data_unchecked (pad=pad@entry=0x7f8e44009580 [GstPad|sink], type=type@entry=4112, data=data@entry=0x7f8e4400a7e0) at ../gst/gstpad.c:4463
#25 0x00007f8f2b7f5114 in gst_pad_push_data (pad=pad@entry=0x7f8e440090e0 [GstPad|src], type=type@entry=4112, data=data@entry=0x7f8e4400a7e0) at ../gst/gstpad.c:4739
#26 0x00007f8f2b7f54de in gst_pad_push (pad=0x7f8e440090e0 [GstPad|src], buffer=0x7f8e4400a7e0 [None]) at ../gst/gstpad.c:4858
#27 0x00007f8f2881b31b in gst_base_transform_chain (pad=<optimized out>, parent=0x7f8e38012340 [GstObject|videobalance], buffer=<optimized out>) at ../libs/gst/base/gstbasetransform.c:2391
#28 0x00007f8f2b7f1775 in gst_pad_chain_data_unchecked (pad=pad@entry=0x7f8e44008e90 [GstPad|sink], type=type@entry=4112, data=data@entry=0x7f8e4400a7e0) at ../gst/gstpad.c:4463
#29 0x00007f8f2b7f5114 in gst_pad_push_data (pad=pad@entry=0x7f8e440097d0 [GstPad|src], type=type@entry=4112, data=data@entry=0x7f8e4400a7e0) at ../gst/gstpad.c:4739
#30 0x00007f8f2b7f54de in gst_pad_push (pad=0x7f8e440097d0 [GstPad|src], buffer=0x7f8e4400a7e0 [None]) at ../gst/gstpad.c:4858
#31 0x00007f8f2881b31b in gst_base_transform_chain (pad=<optimized out>, parent=0x7f8e38044b90 [GstObject|scale], buffer=<optimized out>) at ../libs/gst/base/gstbasetransform.c:2391
#32 0x00007f8f2b7f1775 in gst_pad_chain_data_unchecked (pad=pad@entry=0x7f8e44009a20 [GstPad|sink], type=type@entry=4112, data=data@entry=0x7f8e4400a7e0) at ../gst/gstpad.c:4463
#33 0x00007f8f2b7f5114 in gst_pad_push_data (pad=pad@entry=0x7f8e3803c0a0 [GstPad|src], type=type@entry=4112, data=data@entry=0x7f8e4400a7e0) at ../gst/gstpad.c:4739
#34 0x00007f8f2b7f54de in gst_pad_push (pad=0x7f8e3803c0a0 [GstPad|src], buffer=0x7f8e4400a7e0 [None]) at ../gst/gstpad.c:4858
#35 0x00007f8f2881b31b in gst_base_transform_chain (pad=<optimized out>, parent=0x7f8e3803a1d0 [GstObject|conv], buffer=<optimized out>) at ../libs/gst/base/gstbasetransform.c:2391
#36 0x00007f8f2b7f1775 in gst_pad_chain_data_unchecked (pad=pad@entry=0x7f8e44009c70 [GstPad|sink], type=type@entry=4112, data=data@entry=0x7f8e4400a7e0) at ../gst/gstpad.c:4463
#37 0x00007f8f2b7f5114 in gst_pad_push_data (pad=pad@entry=0x7f8e4c0115d0 [GstPad|proxypad13], type=type@entry=4112, data=data@entry=0x7f8e4400a7e0) at ../gst/gstpad.c:4739
#38 0x00007f8f2b7f54de in gst_pad_push (pad=0x7f8e4c0115d0 [GstPad|proxypad13], buffer=0x7f8e4400a7e0 [None]) at ../gst/gstpad.c:4858
#39 0x00007f8f2b7daaeb in gst_proxy_pad_chain_default (pad=<optimized out>, parent=<optimized out>, buffer=0x7f8e4400a7e0 [None]) at ../gst/gstghostpad.c:127
#40 0x00007f8f2b7f1775 in gst_pad_chain_data_unchecked (pad=pad@entry=0x7f8e4c00d640 [GstPad|sink], type=type@entry=4112, data=data@entry=0x7f8e4400a7e0) at ../gst/gstpad.c:4463
#41 0x00007f8f2b7f5114 in gst_pad_push_data (pad=pad@entry=0x7f8e440087a0 [GstPad|src], type=type@entry=4112, data=data@entry=0x7f8e4400a7e0) at ../gst/gstpad.c:4739
#42 0x00007f8f2b7f54de in gst_pad_push (pad=0x7f8e440087a0 [GstPad|src], buffer=buffer@entry=0x7f8e4400a7e0 [None]) at ../gst/gstpad.c:4858
#43 0x00007f8ebc1795ec in gst_queue_push_one (queue=0x5640c357cd70 [GstQueue|vqueue]) at ../plugins/elements/gstqueue.c:1388
#44 gst_queue_loop (pad=<optimized out>) at ../plugins/elements/gstqueue.c:1541
#45 0x00007f8f2b81dd41 in gst_task_func (task=0x7f8e4400a170 [GstTask|vqueue:src]) at ../gst/gsttask.c:384
#46 0x00007f8f2ba2a692 in g_thread_pool_thread_proxy (data=<optimized out>) at ../glib/gthreadpool.c:350
#47 0x00007f8f2ba27722 in g_thread_proxy (data=0x7f8e38008580) at ../glib/gthread.c:827
#48 0x00007f8f2b2961da in start_thread (arg=<optimized out>) at pthread_create.c:442
#49 0x00007f8f2b31ef44 in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:100

STDERR: 
STDERR: warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing
STDERR: 
STDERR: warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing
STDERR: 
STDERR: warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing
STDERR: 
STDERR: warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing
STDERR: 
STDERR: warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing
STDERR: 
STDERR: warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing
STDERR: 
STDERR: warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing
STDERR: 
STDERR: warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing
STDERR: 
STDERR: warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing
STDERR: 
STDERR: warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing
STDERR: 
STDERR: warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing
STDERR: 
STDERR: warning: Can't open file /memfd:mesa-shared (deleted) during file-backed mapping note processing
STDERR: 
STDERR: warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing
STDERR: 
STDERR: warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing
STDERR: 
STDERR: warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing
STDERR: 
STDERR: warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing
STDERR: 
STDERR: warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing
STDERR: 
STDERR: warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing
STDERR: 
STDERR: warning: Can't open file anon_inode:i915.gem which was expanded to anon_inode:i915.gem during file-backed mapping note processing
STDERR: 
STDERR: warning: Can't open file /memfd:WebKitSharedMemory (deleted) during file-backed mapping note processing
STDERR: 
STDERR: warning: the debug information found in "/usr/lib/debug//usr/lib/x86_64-linux-gnu/libicudata.so.71.1.debug" does not match "/usr/lib/x86_64-linux-gnu/libicudata.so.71" (CRC mismatch).
STDERR: 
STDERR: 
STDERR: warning: the debug information found in "/usr/lib/debug//usr/lib/x86_64-linux-gnu/libicudata.so.71.1.debug" does not match "/usr/lib/x86_64-linux-gnu/libicudata.so.71" (CRC mismatch).
STDERR: 
STDERR: 
STDERR: warning: the debug information found in "/usr/lib/debug//usr/lib/x86_64-linux-gnu/libwayland-client.so.0.21.0.debug" does not match "/usr/lib/x86_64-linux-gnu/libwayland-client.so.0" (CRC mismatch).
STDERR: 
STDERR: 
STDERR: warning: the debug information found in "/usr/lib/debug//usr/lib/x86_64-linux-gnu/libwayland-client.so.0.21.0.debug" does not match "/usr/lib/x86_64-linux-gnu/libwayland-client.so.0" (CRC mismatch).
STDERR: 
STDERR: 
STDERR: warning: the debug information found in "/usr/lib/debug//usr/lib/x86_64-linux-gnu/libwayland-cursor.so.0.21.0.debug" does not match "/usr/lib/x86_64-linux-gnu/libwayland-cursor.so.0" (CRC mismatch).
STDERR: 
STDERR: 
STDERR: warning: the debug information found in "/usr/lib/debug//usr/lib/x86_64-linux-gnu/libwayland-cursor.so.0.21.0.debug" does not match "/usr/lib/x86_64-linux-gnu/libwayland-cursor.so.0" (CRC mismatch).
STDERR: 
STDERR: 
STDERR: warning: the debug information found in "/usr/lib/debug//usr/lib/x86_64-linux-gnu/libwayland-egl.so.1.21.0.debug" does not match "/usr/lib/x86_64-linux-gnu/libwayland-egl.so.1" (CRC mismatch).
STDERR: 
STDERR: 
STDERR: warning: the debug information found in "/usr/lib/debug//usr/lib/x86_64-linux-gnu/libwayland-egl.so.1.21.0.debug" does not match "/usr/lib/x86_64-linux-gnu/libwayland-egl.so.1" (CRC mismatch).
STDERR: 
STDERR: 
STDERR: warning: the debug information found in "/usr/lib/debug//usr/lib/x86_64-linux-gnu/libX11-xcb.so.1.0.0.debug" does not match "/usr/lib/x86_64-linux-gnu/libX11-xcb.so.1" (CRC mismatch).
STDERR: 
STDERR: 
STDERR: warning: the debug information found in "/usr/lib/debug//usr/lib/x86_64-linux-gnu/libX11-xcb.so.1.0.0.debug" does not match "/usr/lib/x86_64-linux-gnu/libX11-xcb.so.1" (CRC mismatch).
STDERR: 
STDERR: 
STDERR: warning: the debug information found in "/usr/lib/debug//usr/lib/x86_64-linux-gnu/libwayland-server.so.0.21.0.debug" does not match "/usr/lib/x86_64-linux-gnu/libwayland-server.so.0" (CRC mismatch).
STDERR: 
STDERR: 
STDERR: warning: the debug information found in "/usr/lib/debug//usr/lib/x86_64-linux-gnu/libwayland-server.so.0.21.0.debug" does not match "/usr/lib/x86_64-linux-gnu/libwayland-server.so.0" (CRC mismatch).
STDERR: 
STDERR: 
STDERR: warning: the debug information found in "/usr/lib/debug//usr/lib/x86_64-linux-gnu/libxcb-dri2.so.0.0.0.debug" does not match "/usr/lib/x86_64-linux-gnu/libxcb-dri2.so.0" (CRC mismatch).
STDERR: 
STDERR: 
STDERR: warning: the debug information found in "/usr/lib/debug//usr/lib/x86_64-linux-gnu/libxcb-dri2.so.0.0.0.debug" does not match "/usr/lib/x86_64-linux-gnu/libxcb-dri2.so.0" (CRC mismatch).
STDERR: 
STDERR: 
STDERR: warning: the debug information found in "/usr/lib/debug//usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstapp.so.debug" does not match "/usr/lib/x86_64-linux-gnu/gstreamer-1.0/libgstapp.so" (CRC mismatch).
STDERR: 
STDERR: WPEWebProcess terminated (pid 247) for reason: crash