Bug 44754 – [Qt] Crash with flash videos on youtube.com

• Status: RESOLVED
• Resolution: INVALID
• Component: WebKit Qt

[Ismail Donmez]

Using WebKit revision 66181, Qt 4.7 revision a5ac66200f77fd09d4c4ee5af3a9380efce871ad, Flash plugin 10.1.82.76ubuntu2

Opening any video on youtube.com crashes with this backtrace:

[New Thread 0xb2622b70 (LWP 27490)]
[New Thread 0xb0d68b70 (LWP 27491)]
[New Thread 0xb0567b70 (LWP 27492)]
Warning(optionsfile.cc:22): Load: Could not open file
No bp log location saved, using default.
[000:000] Browser XEmbed support present: 1
[000:000] Browser toolkit is not Gtk2 (0).
[000:014] Using Xt toolkit
** (<unknown>:27486): DEBUG: NP_Initialize
** (<unknown>:27486): DEBUG: NP_Initialize succeeded
** (<unknown>:27486): DEBUG: NP_Initialize
** (<unknown>:27486): DEBUG: NP_Initialize succeeded
** (<unknown>:27486): DEBUG: NP_Initialize
** (<unknown>:27486): DEBUG: NP_Initialize succeeded
** (<unknown>:27486): DEBUG: NP_Initialize
** (<unknown>:27486): DEBUG: NP_Initialize succeeded
[New Thread 0xaa463b70 (LWP 27496)]
[New Thread 0xa9c62b70 (LWP 27497)]
[New Thread 0xa9461b70 (LWP 27498)]
[New Thread 0xa8c60b70 (LWP 27499)]

(<unknown>:27486): Gdk-CRITICAL **: IA__gdk_window_get_origin: assertion `GDK_IS_WINDOW (window)' failed

(<unknown>:27486): Gdk-WARNING **: /build/buildd/gtk+2.0-2.21.6/gdk/x11/gdkdrawable-x11.c:952 drawable is not a pixmap or window

Program received signal SIGSEGV, Segmentation fault.
g_type_check_instance_cast (type_instance=0xaaaaaaaa, iface_type=142281328) at /build/buildd/glib2.0-2.25.14/gobject/gtype.c:3974
3974	/build/buildd/glib2.0-2.25.14/gobject/gtype.c: No such file or directory.
	in /build/buildd/glib2.0-2.25.14/gobject/gtype.c
(gdb) bt
#0  g_type_check_instance_cast (type_instance=0xaaaaaaaa, iface_type=142281328) at /build/buildd/glib2.0-2.25.14/gobject/gtype.c:3974
#1  0xaa8ef76e in ?? () from /usr/lib/flashplugin-installer/libflashplayer.so
#2  0xaa8edfda in ?? () from /usr/lib/flashplugin-installer/libflashplayer.so
#3  0xaab9fdd8 in ?? () from /usr/lib/flashplugin-installer/libflashplayer.so
#4  0xaaa02280 in ?? () from /usr/lib/flashplugin-installer/libflashplayer.so
#5  0xaabba062 in ?? () from /usr/lib/flashplugin-installer/libflashplayer.so
#6  0xaab04a41 in ?? () from /usr/lib/flashplugin-installer/libflashplayer.so
#7  0xaabbb71c in ?? () from /usr/lib/flashplugin-installer/libflashplayer.so
#8  0xaaa10dd4 in ?? () from /usr/lib/flashplugin-installer/libflashplayer.so
#9  0xaabba062 in ?? () from /usr/lib/flashplugin-installer/libflashplayer.so
#10 0xaab04a41 in ?? () from /usr/lib/flashplugin-installer/libflashplayer.so
#11 0xaaaab706 in ?? () from /usr/lib/flashplugin-installer/libflashplayer.so
#12 0xaaaac7ca in ?? () from /usr/lib/flashplugin-installer/libflashplayer.so
#13 0xaaaa40d0 in ?? () from /usr/lib/flashplugin-installer/libflashplayer.so
#14 0xaaaaadd5 in ?? () from /usr/lib/flashplugin-installer/libflashplayer.so
#15 0xaabd70f2 in ?? () from /usr/lib/flashplugin-installer/libflashplayer.so
#16 0xaabd788b in ?? () from /usr/lib/flashplugin-installer/libflashplayer.so
#17 0xaa9020db in ?? () from /usr/lib/flashplugin-installer/libflashplayer.so
#18 0xaa8f159c in ?? () from /usr/lib/flashplugin-installer/libflashplayer.so
#19 0xb3e7612c in g_timeout_dispatch (source=0x94abd60, callback=0x7, user_data=0xaa4f5000) at /build/buildd/glib2.0-2.25.14/glib/gmain.c:3555
#20 0xb3e759b5 in g_main_dispatch (context=0x8736090) at /build/buildd/glib2.0-2.25.14/glib/gmain.c:2119
#21 g_main_context_dispatch (context=0x8736090) at /build/buildd/glib2.0-2.25.14/glib/gmain.c:2672
#22 0xb3e797c8 in g_main_context_iterate (context=0x8736090, block=<value optimized out>, dispatch=1, self=0x8733e10) at /build/buildd/glib2.0-2.25.14/glib/gmain.c:2750
#23 0xb3e799a8 in g_main_context_iteration (context=0x8736090, may_block=1) at /build/buildd/glib2.0-2.25.14/glib/gmain.c:2813
#24 0xb4521726 in QEventDispatcherGlib::processEvents (this=0x8733d10, flags=...) at kernel/qeventdispatcher_glib.cpp:415
#25 0xb4905f18 in QGuiEventDispatcherGlib::processEvents (this=0x8733d10, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#26 0xb44ecaaf in QEventLoop::processEvents (this=0xbffff59c, flags=...) at kernel/qeventloop.cpp:149
#27 0xb44ecbf3 in QEventLoop::exec (this=0xbffff59c, flags=...) at kernel/qeventloop.cpp:197
#28 0xb44ef66e in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#29 0xb4842d8c in QApplication::exec () at kernel/qapplication.cpp:3675
#30 0x08064ff8 in main (argc=1, argv=0xbffff7e4) at main.cpp:204

[Benjamin Poulain]

This is bug in Flash.

We could work around the problem by proxying plugins but
-Flash would still crash
-That is a too important work for us at the moment

I assign this a low priority as there is nothing we can do. Please reports the problems to Adobe, that might make them move.

[Jocelyn Turcotte]

=== Bulk closing of Qt bugs ===

If you believe that this bug report is still relevant for a non-Qt port of webkit.org, please re-open it and remove [Qt] from the summary.

If you believe that this is still an important QtWebKit bug, please fill a new report at https://bugreports.qt-project.org and add a link to this issue. See http://qt-project.org/wiki/ReportingBugsInQt for additional guidelines.