[Webkit-unassigned] [Bug 117688] New: REGRESSION (r151021?): http/tests/security/video-poster-cross-origin-crash.html is flakily crashing

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=117688

           Summary: REGRESSION (r151021?):
                    http/tests/security/video-poster-cross-origin-crash.ht
                    ml is flakily crashing
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: NEW
          Keywords: Gtk, LayoutTestFailure, Regression
          Severity: Normal
          Priority: P2
         Component: WebKit Gtk
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: zandobersek at gmail.com
                CC: pnormand at igalia.com, andrunko at gmail.com


The http/tests/security/video-poster-cross-origin-crash.html layout test is occasionally crashing on the GTK WK1 builders, most likely after r151021.
http://trac.webkit.org/changeset/151021

The crash is occurring in WebCore::MediaPlayer::referrer.
Crash log for DumpRenderTree (pid 32194):

...
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/x86_64-linux-gnu/libthread_db.so.1".
Core was generated by `/home/slave/webkitgtk/gtk-linux-64-debug-wk1/build/WebKitBuild/Debug/Programs/D'.
Program terminated with signal 11, Segmentation fault.
#0  0x00002b56095ab018 in WebCore::MediaPlayer::referrer (this=0x2b5664095090) at ../../Source/WebCore/platform/graphics/MediaPlayer.cpp:1068
1068        return m_mediaPlayerClient->mediaPlayerReferrer();

...

Thread 1 (Thread 0x2b5617b00460 (LWP 32194)):
#0  0x00002b56095ab018 in WebCore::MediaPlayer::referrer (this=0x2b5664095090) at ../../Source/WebCore/platform/graphics/MediaPlayer.cpp:1068
#1  0x00002b56095a5cb8 in webKitWebSrcStart (src=0x15b4360) at ../../Source/WebCore/platform/graphics/gstreamer/WebKitWebSourceGStreamer.cpp:487
#2  0x00002b560d3c4cf2 in g_timeout_dispatch () from /home/slave/webkitgtk/gtk-linux-64-debug-wk1/build/WebKitBuild/Dependencies/Root/lib64/libglib-2.0.so.0
#3  0x00002b560d3c2f95 in g_main_dispatch () from /home/slave/webkitgtk/gtk-linux-64-debug-wk1/build/WebKitBuild/Dependencies/Root/lib64/libglib-2.0.so.0
#4  0x00002b560d3c3cfa in g_main_context_dispatch () from /home/slave/webkitgtk/gtk-linux-64-debug-wk1/build/WebKitBuild/Dependencies/Root/lib64/libglib-2.0.so.0
#5  0x00002b560d3c3eea in g_main_context_iterate () from /home/slave/webkitgtk/gtk-linux-64-debug-wk1/build/WebKitBuild/Dependencies/Root/lib64/libglib-2.0.so.0
#6  0x00002b560d3c431a in g_main_loop_run () from /home/slave/webkitgtk/gtk-linux-64-debug-wk1/build/WebKitBuild/Dependencies/Root/lib64/libglib-2.0.so.0
#7  0x00002b560c583c1d in gtk_main () from /home/slave/webkitgtk/gtk-linux-64-debug-wk1/build/WebKitBuild/Dependencies/Root/lib64/libgtk-3.so.0
#8  0x00000000004a8e75 in runTest (inputLine=...) at ../../Tools/DumpRenderTree/gtk/DumpRenderTree.cpp:769
#9  0x00000000004a8540 in runTestingServerLoop () at ../../Tools/DumpRenderTree/gtk/DumpRenderTree.cpp:552
#10 0x00000000004ab76c in main (argc=2, argv=0x7fffe716aba8) at ../../Tools/DumpRenderTree/gtk/DumpRenderTree.cpp:1511

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