[Webkit-unassigned] [Bug 198567] [GStreamer] Crash in MediaPlayerPrivateGStreamerBase::ensureGstGLContext

Wed Jun 5 08:54:54 PDT 2019

https://bugs.webkit.org/show_bug.cgi?id=198567

Michael Catanzaro <mcatanzaro at igalia.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |mcatanzaro at igalia.com

--- Comment #1 from Michael Catanzaro <mcatanzaro at igalia.com> ---
BTW, it's very unclear from the crash on the release bots:

Thread 1 (Thread 0x7f9040ff9700 (LWP 4838)):
#0  _g_log_abort () at ../../Source/glib-2.58.1/glib/gmessages.c:557
#1  0x00007f914c979485 in g_logv () at ../../Source/glib-2.58.1/glib/gmessages.c:1371
#2  0x00007f914c9795d2 in g_log () at ../../Source/glib-2.58.1/glib/gmessages.c:1413
#3  0x00007f914d8a348d in gst_caps_unref () at ../../Source/gstreamer-1.16.0/gst/gstcaps.h:223
#4  gst_base_transform_default_query () at ../../Source/gstreamer-1.16.0/libs/gst/base/gstbasetransform.c:1552
#5  0x00007f914d7a2b48 in gst_pad_query () at ../../Source/gstreamer-1.16.0/gst/gstpad.c:4071
#6  0x00007f914d7a3121 in gst_pad_peer_query () at ../../Source/gstreamer-1.16.0/gst/gstpad.c:4203
#7  0x00007f914d7df464 in gst_pad_peer_query_caps () at ../../Source/gstreamer-1.16.0/gst/gstutils.c:3107
#8  0x00007f914d8a381c in gst_base_transform_query_caps () at ../../Source/gstreamer-1.16.0/libs/gst/base/gstbasetransform.c:678
#9  gst_base_transform_default_query () at ../../Source/gstreamer-1.16.0/libs/gst/base/gstbasetransform.c:1550
#10 0x00007f914d7a2b48 in gst_pad_query () at ../../Source/gstreamer-1.16.0/gst/gstpad.c:4071
#11 0x00007f914d7a3121 in gst_pad_peer_query () at ../../Source/gstreamer-1.16.0/gst/gstpad.c:4203
#12 0x00007f914d7d9bd8 in query_caps_func () at ../../Source/gstreamer-1.16.0/gst/gstutils.c:2765
#13 0x00007f914d7a175e in gst_pad_forward () at ../../Source/gstreamer-1.16.0/gst/gstpad.c:3008
#14 0x00007f914d7dc672 in gst_pad_proxy_query_caps () at ../../Source/gstreamer-1.16.0/gst/gstutils.c:2815
#15 0x00007f914d7a1a50 in gst_pad_query_caps_default () at ../../Source/gstreamer-1.16.0/gst/gstpad.c:3187
#16 gst_pad_query_default () at ../../Source/gstreamer-1.16.0/gst/gstpad.c:3415
#17 0x00007f914d7a2b48 in gst_pad_query () at ../../Source/gstreamer-1.16.0/gst/gstpad.c:4071
#18 0x00007f914d7dce24 in gst_pad_query_caps () at ../../Source/gstreamer-1.16.0/gst/gstutils.c:3061
#19 0x00007f90f858b998 in autoplug_continue_cb () at ../../Source/gst-plugins-base-1.16.0/gst/playback/gstplaybin2.c:4538
#20 0x00007f914a0298ee in ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
#21 0x00007f914a0292bf in ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
#22 0x00007f914ca543d8 in g_cclosure_marshal_generic () at ../../Source/glib-2.58.1/gobject/gclosure.c:1496
#23 0x00007f914ca53bc5 in g_closure_invoke () at ../../Source/glib-2.58.1/gobject/gclosure.c:810
#24 0x00007f914ca66752 in signal_emit_unlocked_R () at ../../Source/glib-2.58.1/gobject/gsignal.c:3635
#25 0x00007f914ca6eeb8 in g_signal_emit_valist () at ../../Source/glib-2.58.1/gobject/gsignal.c:3401
#26 0x00007f914ca6f842 in g_signal_emit () at ../../Source/glib-2.58.1/gobject/gsignal.c:3447
#27 0x00007f90f8570815 in proxy_autoplug_continue_signal () at ../../Source/gst-plugins-base-1.16.0/gst/playback/gsturidecodebin.c:1691
#28 0x00007f914a0298ee in ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
#29 0x00007f914a0292bf in ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
#30 0x00007f914ca543d8 in g_cclosure_marshal_generic () at ../../Source/glib-2.58.1/gobject/gclosure.c:1496
#31 0x00007f914ca53bc5 in g_closure_invoke () at ../../Source/glib-2.58.1/gobject/gclosure.c:810
#32 0x00007f914ca66752 in signal_emit_unlocked_R () at ../../Source/glib-2.58.1/gobject/gsignal.c:3635
#33 0x00007f914ca6eeb8 in g_signal_emit_valist () at ../../Source/glib-2.58.1/gobject/gsignal.c:3401
#34 0x00007f914ca6f842 in g_signal_emit () at ../../Source/glib-2.58.1/gobject/gsignal.c:3447
#35 0x00007f90f8565e0f in analyze_new_pad () at ../../Source/gst-plugins-base-1.16.0/gst/playback/gstdecodebin2.c:1598
#36 0x00007f90f8566be5 in type_found () at ../../Source/gst-plugins-base-1.16.0/gst/playback/gstdecodebin2.c:2883
#37 0x00007f914a0298ee in ffi_call_unix64 () from /usr/lib/x86_64-linux-gnu/libffi.so.6
#38 0x00007f914a0292bf in ffi_call () from /usr/lib/x86_64-linux-gnu/libffi.so.6
#39 0x00007f914ca543d8 in g_cclosure_marshal_generic () at ../../Source/glib-2.58.1/gobject/gclosure.c:1496
#40 0x00007f914ca53bc5 in g_closure_invoke () at ../../Source/glib-2.58.1/gobject/gclosure.c:810
#41 0x00007f914ca66752 in signal_emit_unlocked_R () at ../../Source/glib-2.58.1/gobject/gsignal.c:3635
#42 0x00007f914ca6f435 in g_signal_emit_valist () at ../../Source/glib-2.58.1/gobject/gsignal.c:3391
#43 0x00007f914ca6f842 in g_signal_emit () at ../../Source/glib-2.58.1/gobject/gsignal.c:3447
#44 0x00007f90f83e0676 in gst_type_find_element_loop () at ../../Source/gstreamer-1.16.0/plugins/elements/gsttypefindelement.c:1169
#45 0x00007f914d7d12d1 in gst_task_func () at ../../Source/gstreamer-1.16.0/gst/gsttask.c:328
#46 0x00007f914c99b3be in g_thread_pool_thread_proxy () at ../../Source/glib-2.58.1/glib/gthreadpool.c:307
#47 0x00007f914c99a9e5 in g_thread_proxy () at ../../Source/glib-2.58.1/glib/gthread.c:784
#48 0x00007f914d192fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486
#49 0x00007f914b8774cf in clone () from /lib/x86_64-linux-gnu/libc.so.6

But I *guess* that's somehow indirectly caused because we clobber m_glDisplay here. At least the first crashing test is now passing for me locally with this change.

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