Version-Release number of selected component:
webkitgtk4-2.8.3-2.fc22

Additional info:
reporter:       libreport-2.6.0
backtrace_rating: 4
cmdline:        /usr/libexec/webkit2gtk-4.0/WebKitPluginProcess 29 /usr/lib64/mozilla/plugins/libnpgoogletalk.so
crash_function: _gdk_window_has_impl
executable:     /usr/libexec/webkit2gtk-4.0/WebKitPluginProcess
global_pid:     23174
kernel:         4.0.6-300.fc22.x86_64
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 _gdk_window_has_impl at gdkwindow.c:593
 #1 gdk_x11_window_get_xid at gdkwindow-x11.c:5527
 #2 WebKit::NetscapePlugin::platformGeometryDidChange at /usr/src/debug/webkitgtk-2.8.3/Source/WebKit2/WebProcess/Plugins/Netscape/x11/NetscapePluginX11.cpp:264
 #3 WebKit::NetscapePlugin::geometryDidChange at /usr/src/debug/webkitgtk-2.8.3/Source/WebKit2/WebProcess/Plugins/Netscape/NetscapePlugin.cpp:767
 #4 WebKit::PluginControllerProxy::geometryDidChange at /usr/src/debug/webkitgtk-2.8.3/Source/WebKit2/PluginProcess/PluginControllerProxy.cpp:437
 #5 callMemberFunctionImpl<WebKit::PluginControllerProxy, void (WebKit::PluginControllerProxy::*)(WebCore::IntSize const&, WebCore::IntRect const&, WebCore::AffineTransform const&, float, WebKit::ShareableBitmap::Handle const&), std::tuple<WebCore::IntSize, WebCore::IntRect, WebCore::AffineTransform, float, WebKit::ShareableBitmap::Handle>, 0ul, 1ul, 2ul, 3ul, 4ul> at /usr/src/debug/webkitgtk-2.8.3/Source/WebKit2/Platform/IPC/HandleMessage.h:16
 #6 callMemberFunction<WebKit::PluginControllerProxy, void (WebKit::PluginControllerProxy::*)(WebCore::IntSize const&, WebCore::IntRect const&, WebCore::AffineTransform const&, float, WebKit::ShareableBitmap::Handle const&), std::tuple<WebCore::IntSize, WebCore::IntRect, WebCore::AffineTransform, float, WebKit::ShareableBitmap::Handle>, std::make_index_sequence<5ul> > at /usr/src/debug/webkitgtk-2.8.3/Source/WebKit2/Platform/IPC/HandleMessage.h:22
 #7 handleMessage<Messages::PluginControllerProxy::GeometryDidChange, WebKit::PluginControllerProxy, void (WebKit::PluginControllerProxy::*)(WebCore::IntSize const&, WebCore::IntRect const&, WebCore::AffineTransform const&, float, WebKit::ShareableBitmap::Handle const&)> at /usr/src/debug/webkitgtk-2.8.3/Source/WebKit2/Platform/IPC/HandleMessage.h:92
 #8 WebKit::PluginControllerProxy::didReceivePluginControllerProxyMessage at /usr/src/debug/webkitgtk-2.8.3/x86_64-redhat-linux-gnu/DerivedSources/WebKit2/PluginControllerProxyMessageReceiver.cpp:77
 #9 WebKit::WebProcessConnection::didReceiveMessage at /usr/src/debug/webkitgtk-2.8.3/Source/WebKit2/PluginProcess/WebProcessConnection.cpp:140