Bug 207927

Crash log from release build 12696: https://build.webkit.org/results/GTK%20Linux%2064-bit%20Release%20(Tests)/r256841%20(12696)/media/audio-playback-restriction-removed-muted-crash-log.txt Trace and stderr: Thread 1 (Thread 0x7f48be7fb700 (LWP 1794)): #0 _g_log_abort () at ../../Source/glib-2.58.1/glib/gmessages.c:557 #1 0x00007f49ae50eabc in g_log_writer_default () at ../../Source/glib-2.58.1/glib/gmessages.c:2688 #2 0x00007f49ae50cf27 in g_log_structured_array () at ../../Source/glib-2.58.1/glib/gmessages.c:1923 #3 g_log_structured_array () at ../../Source/glib-2.58.1/glib/gmessages.c:1896 #4 0x00007f49ae50d88e in g_log_structured_standard () at ../../Source/glib-2.58.1/glib/gmessages.c:1980 #5 0x00007f49ad480d43 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 #6 0x00007f49ad48d4b3 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 #7 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:269 #8 0x00007f49ae10611a in _XError () from /usr/lib/x86_64-linux-gnu/libX11.so.6 #9 0x00007f49ae103077 in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6 #10 0x00007f49ae10311d in ?? () from /usr/lib/x86_64-linux-gnu/libX11.so.6 #11 0x00007f49ae104050 in _XReply () from /usr/lib/x86_64-linux-gnu/libX11.so.6 #12 0x00007f49ae0ff99d in XSync () from /usr/lib/x86_64-linux-gnu/libX11.so.6 #13 0x00007f49af300630 in gst_gl_window_x11_create_window () at ../../Source/gst-plugins-base-1.16.1/gst-libs/gst/gl/x11/gstglwindow_x11.c:235 #14 0x00007f49af30137e in gst_gl_context_glx_choose_format () at ../../Source/gst-plugins-base-1.16.1/gst-libs/gst/gl/x11/gstglcontext_glx.c:425 #15 0x00007f49af2db104 in gst_gl_context_create_thread () at ../../Source/gst-plugins-base-1.16.1/gst-libs/gst/gl/gstglcontext.c:1224 #16 0x00007f49ae52dd45 in g_thread_proxy () at ../../Source/glib-2.58.1/glib/gthread.c:784 #17 0x00007f49b07c8fa3 in start_thread (arg=<optimized out>) at pthread_create.c:486 #18 0x00007f49acf944cf in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:95 STDERR: STDERR: warning: core file may not match specified executable file. STDERR: STDERR: (WebKitWebProcess:126601): Gdk-ERROR **: 12:27:50.579: 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 855 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.) Different stack from the other media crashes in bug198830