Bug 194386 – [GTK] media/video-background-playback.html is flaky

• Status: RESOLVED
• Resolution: FIXED
• Component: WebKitGTK

[Miguel Gomez]

media/video-background-playback.html [ Crash ]

The vast majority of the times this test passes, but every now and then it crashes. The relevant part of the bt is this (some xerror):

Thread 1 (Thread 0x7fbb03ff7700 (LWP 23629)):
#0  _g_log_abort () at ../../Source/glib-2.58.1/glib/gmessages.c:557
#1  0x00007fbb9ad499c1 in g_log_writer_default () at ../../Source/glib-2.58.1/glib/gmessages.c:2688
#2  0x00007fbb9ad47d7c in g_log_structured_array () at ../../Source/glib-2.58.1/glib/gmessages.c:1923
#3  0x00007fbb9ad48752 in g_log_structured_standard () at ../../Source/glib-2.58.1/glib/gmessages.c:1980
#4  0x00007fbb981e0b95 in _gdk_x11_display_error_event () at /home/slave/webkitgtk/gtk-linux-64-release-tests/build/WebKitBuild/DependenciesGTK/Source/gtk+-3.22.11/gdk/x11/gdkdisplay-x11.c:2579
#5  0x00007fbb981ecfe3 in gdk_x_error () at /home/slave/webkitgtk/gtk-linux-64-release-tests/build/WebKitBuild/DependenciesGTK/Source/gtk+-3.22.11/gdk/x11/gdkmain-x11.c:307
#6  0x00007fbb9a2b922d in _XError () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#7  0x00007fbb9a2b6157 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#8  0x00007fbb9a2b6215 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#9  0x00007fbb9a2b7128 in _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#10 0x00007fbb9a29bc4e in XGetGeometry () from /usr/lib/x86_64-linux-gnu/libX11.so.6
#11 0x00007fbba4fe6889 in swrastGetDrawableInfo () at /home/slave/webkitgtk/gtk-linux-64-release-tests/build/WebKitBuild/DependenciesGTK/Source/Mesa/src/glx/drisw_glx.c:108
#12 0x00007fbb1aff0a29 in get_drawable_info () at /home/slave/webkitgtk/gtk-linux-64-release-tests/build/WebKitBuild/DependenciesGTK/Source/Mesa/src/gallium/state_trackers/dri/drisw.c:61
#13 drisw_update_drawable_info () at /home/slave/webkitgtk/gtk-linux-64-release-tests/build/WebKitBuild/DependenciesGTK/Source/Mesa/src/gallium/state_trackers/dri/drisw.c:121
#14 0x00007fbb1afeecd5 in dri_st_framebuffer_validate () at /home/slave/webkitgtk/gtk-linux-64-release-tests/build/WebKitBuild/DependenciesGTK/Source/Mesa/src/gallium/state_trackers/dri/dri_drawable.c:83
#15 0x00007fbb1ae9a7b0 in st_framebuffer_validate () at /home/slave/webkitgtk/gtk-linux-64-release-tests/build/WebKitBuild/DependenciesGTK/Source/Mesa/src/mesa/state_tracker/st_manager.c:201
#16 0x00007fbb1ae9c091 in st_manager_validate_framebuffers () at /home/slave/webkitgtk/gtk-linux-64-release-tests/build/WebKitBuild/DependenciesGTK/Source/Mesa/src/mesa/state_tracker/st_manager.c:1117
#17 0x00007fbb1ae5b895 in st_validate_state () at /home/slave/webkitgtk/gtk-linux-64-release-tests/build/WebKitBuild/DependenciesGTK/Source/Mesa/src/mesa/state_tracker/st_atom.c:202
#18 0x00007fbb1ae63623 in st_Clear () at /home/slave/webkitgtk/gtk-linux-64-release-tests/build/WebKitBuild/DependenciesGTK/Source/Mesa/src/mesa/state_tracker/st_cb_clear.c:411
#19 0x00007fbba20e6672 in _ZN6WebKit24CoordinatedGraphicsScene23paintToCurrentGLContextERKN7WebCore20TransformationMatrixEfRKNS1_9FloatRectERKNS1_5ColorEbj () from /home/slave/webkitgtk/gtk-linux-64-release/build/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#20 0x00007fbba20f8e08 in _ZN6WebKit18ThreadedCompositor15renderLayerTreeEv () from /home/slave/webkitgtk/gtk-linux-64-release/build/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#21 0x00007fbba20f8f5b in _ZN3WTF8FunctionIFvvEE15CallableWrapperIZN6WebKit18ThreadedCompositor12forceRepaintEvEUlvE_E4callEv () from /home/slave/webkitgtk/gtk-linux-64-release/build/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#22 0x00007fbba20f79f3 in _ZN3WTF8FunctionIFvvEE15CallableWrapperIZN6WebKit18CompositingRunLoop15performTaskSyncEOS2_EUlvE_E4callEv () from /home/slave/webkitgtk/gtk-linux-64-release/build/WebKitBuild/Release/lib/libwebkit2gtk-4.0.so.37
#23 0x00007fbb9fdc53f8 in _ZN3WTF7RunLoop11performWorkEv () from /home/slave/webkitgtk/gtk-linux-64-release/build/WebKitBuild/Release/lib/libjavascriptcoregtk-4.0.so.18
#24 0x00007fbb9fe28849 in _ZZN3WTF7RunLoopC4EvENUlPvE_4_FUNES1_ () from /home/slave/webkitgtk/gtk-linux-64-release/build/WebKitBuild/Release/lib/libjavascriptcoregtk-4.0.so.18
#25 0x00007fbb9ad4165a in g_main_dispatch () at ../../Source/glib-2.58.1/glib/gmain.c:3182
#26 g_main_context_dispatch () at ../../Source/glib-2.58.1/glib/gmain.c:3847
#27 0x00007fbb9ad419e8 in g_main_context_iterate () at ../../Source/glib-2.58.1/glib/gmain.c:3920
#28 0x00007fbb9ad41d02 in g_main_loop_run () at ../../Source/glib-2.58.1/glib/gmain.c:4116
#29 0x00007fbb9fe29290 in _ZN3WTF7RunLoop3runEv () from /home/slave/webkitgtk/gtk-linux-64-release/build/WebKitBuild/Release/lib/libjavascriptcoregtk-4.0.so.18
#30 0x00007fbb9fdc6a4b in _ZN3WTF6Thread10entryPointEPNS0_16NewThreadContextE () from /home/slave/webkitgtk/gtk-linux-64-release/build/WebKitBuild/Release/lib/libjavascriptcoregtk-4.0.so.18
#31 0x00007fbb9fe29799 in _ZN3WTFL19wtfThreadEntryPointEPv () from /home/slave/webkitgtk/gtk-linux-64-release/build/WebKitBuild/Release/lib/libjavascriptcoregtk-4.0.so.18
#32 0x00007fbb9c3a5494 in start_thread (arg=0x7fbb03ff7700) at pthread_create.c:333
#33 0x00007fbb98c6393f in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:97

STDERR: 
STDERR: warning: core file may not match specified executable file.
STDERR: 
STDERR: (WebKitWebProcess:23578): Gdk-ERROR **: 23:28:54.967: The program 'WebKitWebProcess' received an X Window System error.
STDERR: This probably reflects a bug in the program.
STDERR: The error was 'BadAccess (attempt to access private resource denied)'.
STDERR:   (Details: serial 7848 error_code 10 request_code 130 (MIT-SHM) minor_code 1)
STDERR:   (Note to programmers: normally, X errors are reported asynchronously;
STDERR:    that is, you will receive the error a while after causing it.
STDERR:    To debug your program, run it with the GDK_SYNCHRONIZE environment
STDERR:    variable to change this behavior. You can then get a meaningful
STDERR:    backtrace from your debugger if you break on the gdk_x_error() function.)

[Diego Pino]

The test(s) filed under this bug have been consistently passing for the last 4000 revisions. Marking bug as fixed.

Committed r263254: <https://trac.webkit.org/changeset/263254>