[Webkit-unassigned] [Bug 154884] New: [GTK] Plugin process crash in WebKit::NetscapePlugin::destroy

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=154884

            Bug ID: 154884
           Summary: [GTK] Plugin process crash in
                    WebKit::NetscapePlugin::destroy
    Classification: Unclassified
           Product: WebKit
           Version: Other
          Hardware: PC
                OS: Linux
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: WebKit Gtk
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: mcatanzaro at igalia.com
                CC: bugs-noreply at webkitgtk.org

Version-Release number of selected component:
webkitgtk4-2.10.4-1.fc23

Additional info:
reporter:       libreport-2.6.3
backtrace_rating: 4
cmdline:        /usr/libexec/webkit2gtk-4.0/WebKitPluginProcess 24 /usr/lib64/mozilla/plugins/libgnome-shell-browser-plugin.so
crash_function: g_type_check_instance
executable:     /usr/libexec/webkit2gtk-4.0/WebKitPluginProcess
global_pid:     19422
kernel:         4.2.6-301.fc23.x86_64
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #0 g_type_check_instance at gtype.c:4136
 #1 g_signal_handler_disconnect at gsignal.c:2620
 #2 NPP_Destroy at browser-plugin.c:1016
 #3 WebKit::NetscapePlugin::destroy at /usr/src/debug/webkitgtk-2.10.4/Source/WebKit2/WebProcess/Plugins/Netscape/NetscapePlugin.cpp:738
 #4 WebKit::Plugin::destroyPlugin at /usr/src/debug/webkitgtk-2.10.4/Source/WebKit2/WebProcess/Plugins/Plugin.cpp:101
 #5 WebKit::PluginControllerProxy::destroy at /usr/src/debug/webkitgtk-2.10.4/Source/WebKit2/PluginProcess/PluginControllerProxy.cpp:158
 #6 WebKit::WebProcessConnection::destroyPluginControllerProxy at /usr/src/debug/webkitgtk-2.10.4/Source/WebKit2/PluginProcess/WebProcessConnection.cpp:84
 #7 WebKit::WebProcessConnection::destroyPlugin at /usr/src/debug/webkitgtk-2.10.4/Source/WebKit2/PluginProcess/WebProcessConnection.cpp:201
 #8 IPC::callMemberFunctionImpl<WebKit::WebProcessConnection, void (WebKit::WebProcessConnection::*)(unsigned long, bool, WTF::PassRefPtr<Messages::WebProcessConnection::DestroyPlugin::DelayedReply>), Messages::WebProcessConnection::DestroyPlugin::DelayedReply, std::tuple<unsigned long, bool>, 0ul, 1ul>(WebKit::WebProcessConnection*, void (WebKit::WebProcessConnection::*)(unsigned long, bool, WTF::PassRefPtr<Messages::WebProcessConnection::DestroyPlugin::DelayedReply>), WTF::PassRefPtr<Messages::WebProcessConnection::DestroyPlugin::DelayedReply>, std::tuple<unsigned long, bool>&&, std::index_sequence<0ul, 1ul>) at /usr/src/debug/webkitgtk-2.10.4/Source/WebKit2/Platform/IPC/HandleMessage.h:44
 #9 IPC::callMemberFunction<WebKit::WebProcessConnection, void (WebKit::WebProcessConnection::*)(unsigned long, bool, WTF::PassRefPtr<Messages::WebProcessConnection::DestroyPlugin::DelayedReply>), Messages::WebProcessConnection::DestroyPlugin::DelayedReply, std::tuple<unsigned long, bool>, std::make_index_sequence<2ul> >(std::tuple<unsigned long, bool>&&, WTF::PassRefPtr<Messages::WebProcessConnection::DestroyPlugin::DelayedReply>, WebKit::WebProcessConnection*, void (WebKit::WebProcessConnection::*)(unsigned long, bool, WTF::PassRefPtr<Messages::WebProcessConnection::DestroyPlugin::DelayedReply>)) at /usr/src/debug/webkitgtk-2.10.4/Source/WebKit2/Platform/IPC/HandleMessage.h:50

It's another GNOME Shell browser plugin crash, again with the latest 3.18.3. Full backtrace downstream.

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