[webkit-dev] NPAPI plugin crashes while calling npnfuncs->invoke in GtkLauncher
souvik.datta at wipro.com
souvik.datta at wipro.com
Thu Mar 15 09:15:37 PDT 2012
Please find the gdb trace:
Program received signal SIGSEGV, Segmentation fault.
0x0046b886 in _NPN_Invoke () from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
(gdb) bt
#0 0x0046b886 in _NPN_Invoke () from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#1 0x02a86fe0 in threadImplementation (msg=0x0) at wcfplugin.c:110
#2 0x0099585a in WebCore::PluginMainThreadScheduler::dispatchCallsForPlugin(_NPP*, WTF::Deque<WebCore::PluginMainThreadScheduler::Call, 0u> const&) ()
from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#3 0x00995cd1 in WebCore::PluginMainThreadScheduler::dispatchCalls() () from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#4 0x00995d6d in WebCore::PluginMainThreadScheduler::mainThreadCallback(void*) () from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#5 0x01504f43 in WTF::dispatchFunctionsFromMainThread() () from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libjavascriptcoregtk-3.0.so.0
#6 0x01504ba7 in WTF::timeoutFired(void*) () from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libjavascriptcoregtk-3.0.so.0
#7 0x026234dc in g_timeout_dispatch (source=0x81ed5b8, callback=0x46b860 <_NPN_Invoke>, user_data=0x0) at gmain.c:3907
#8 0x02622d15 in g_main_dispatch (context=0x80804a0) at gmain.c:2441
#9 g_main_context_dispatch (context=0x80804a0) at gmain.c:3011
#10 0x02626b20 in g_main_context_iterate (context=0x80804a0, block=<value optimized out>, dispatch=1, self=0x80516e0) at gmain.c:3089
#11 0x02626f4f in g_main_loop_run (loop=0x81f94c8) at gmain.c:3297
#12 0x01ce8e64 in gtk_dialog_run (dialog=0x81f40a8) at gtkdialog.c:1110
#13 0x002f5cf0 in webkit_web_view_script_dialog(_WebKitWebView*, _WebKitWebFrame*, char const*, WebKitScriptDialogType, char const*, char**) ()
from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#14 0x002f5f3f in webkit_web_view_real_script_alert(_WebKitWebView*, _WebKitWebFrame*, char const*) ()
from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#15 0x002ff36b in webkit_marshal_BOOLEAN__OBJECT_STRING () from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#16 0x0257eea7 in g_type_class_meta_marshal (closure=0xbfffe2c4, return_value=0xbfffe2c4, n_param_values=3, param_values=0x81f40a8, invocation_hint=0xbfffe2b0,
marshal_data=0x200) at gclosure.c:885
#17 0x025805ea in g_closure_invoke (closure=0x80b5978, return_value=0xbfffe2c4, n_param_values=3, param_values=0x812c920, invocation_hint=0xbfffe2b0) at gclosure.c:774
#18 0x02597490 in signal_emit_unlocked_R (node=<value optimized out>, detail=<value optimized out>, instance=0x80c0008, emission_return=0xbfffe41c,
instance_and_params=0x812c920) at gsignal.c:3310
#19 0x0259898b in g_signal_emit_valist (instance=0x80c0008, signal_id=170, detail=0, var_args=0xbfffe4e0 "\374\344\377\277(\346\377\277\b\345\377\277ڨ\212")
at gsignal.c:3013
#20 0x02598d7a in g_signal_emit_by_name (instance=0x80c0008, detailed_signal=0x116199a "script-alert") at gsignal.c:3097
#21 0x002bfe8e in WebKit::ChromeClient::runJavaScriptAlert(WebCore::Frame*, WTF::String const&) ()
---Type <return> to continue, or q <return> to quit---
from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#22 0x0087b693 in WebCore::Chrome::runJavaScriptAlert(WebCore::Frame*, WTF::String const&) () from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#23 0x0088c9d1 in WebCore::DOMWindow::alert(WTF::String const&) () from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#24 0x00dac0ea in WebCore::jsDOMWindowPrototypeFunctionAlert(JSC::ExecState*) () from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#25 0x02a82c09 in ?? ()
#26 0x013a5ba2 in JSC::Interpreter::executeCall(JSC::ExecState*, JSC::JSObject*, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) ()
from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libjavascriptcoregtk-3.0.so.0
#27 0x01455d86 in JSC::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) ()
from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libjavascriptcoregtk-3.0.so.0
#28 0x003f8f5f in WebCore::JSMainThreadExecState::call(JSC::ExecState*, JSC::JSValue, JSC::CallType, JSC::CallData const&, JSC::JSValue, JSC::ArgList const&) ()
from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#29 0x003f8508 in WebCore::JSEventListener::handleEvent(WebCore::ScriptExecutionContext*, WebCore::Event*) ()
from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#30 0x0057c635 in WebCore::EventTarget::fireEventListeners(WebCore::Event*, WebCore::EventTargetData*, WTF::Vector<WebCore::RegisteredEventListener, 1u>&) ()
from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#31 0x0057c78d in WebCore::EventTarget::fireEventListeners(WebCore::Event*) () from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#32 0x0058b572 in WebCore::Node::handleLocalEvents(WebCore::Event*) () from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#33 0x00576cbd in WebCore::EventDispatcher::dispatchEvent(WTF::PassRefPtr<WebCore::Event>) () from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#34 0x00585ac0 in WebCore::MouseEventDispatchMediator::dispatchEvent(WebCore::EventDispatcher*) const ()
from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#35 0x00576027 in WebCore::EventDispatcher::dispatchEvent(WebCore::Node*, WTF::PassRefPtr<WebCore::EventDispatchMediator>) ()
from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#36 0x0058d90a in WebCore::Node::dispatchMouseEvent(WebCore::PlatformMouseEvent const&, WTF::AtomicString const&, int, WebCore::Node*) ()
from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#37 0x008a16cf in WebCore::EventHandler::dispatchMouseEvent(WTF::AtomicString const&, WebCore::Node*, bool, int, WebCore::PlatformMouseEvent const&, bool) ()
from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#38 0x008a22c8 in WebCore::EventHandler::handleMouseReleaseEvent(WebCore::PlatformMouseEvent const&) ()
from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
---Type <return> to continue, or q <return> to quit---
#39 0x002f57a8 in webkit_web_view_button_release_event(_GtkWidget*, _GdkEventButton*) () from /home/souvik/Webkit/Webkit/webkit-1.6.1/.libs/libwebkitgtk-3.0.so.0
#40 0x01d79194 in _gtk_marshal_BOOLEAN__BOXED (closure=0x805e958, return_value=0xb65b5a94, n_param_values=2, param_values=0xbfffedb4, invocation_hint=0xbfffef80,
marshal_data=0x2f5720) at gtkmarshalers.c:85
#41 0x0257eea7 in g_type_class_meta_marshal (closure=0x805e958, return_value=0xbfffef94, n_param_values=2, param_values=0x810d6a0, invocation_hint=0xbfffef80,
marshal_data=0xc4) at gclosure.c:885
#42 0x025805ea in g_closure_invoke (closure=0x805e958, return_value=0xbfffef94, n_param_values=2, param_values=0x810d6a0, invocation_hint=0xbfffef80) at gclosure.c:774
#43 0x02597490 in signal_emit_unlocked_R (node=<value optimized out>, detail=<value optimized out>, instance=0x80c0008, emission_return=0xbffff0ec,
instance_and_params=0x810d6a0) at gsignal.c:3310
#44 0x0259898b in g_signal_emit_valist (instance=0x80c0008, signal_id=29, detail=0,
var_args=0xbffff150 "|\361\377\277\030\243\005\b\324\311Y\002\n\323\353\001\364\257\377\001\b") at gsignal.c:3013
#45 0x02598f32 in g_signal_emit (instance=0x80c0008, signal_id=29, detail=0) at gsignal.c:3060
#46 0x01ebd50e in gtk_widget_event_internal (widget=0x80c0008, event=0x80c4458) at gtkwidget.c:6132
#47 0x01d72c59 in gtk_propagate_event (widget=0x80c0008, event=0x80c4458) at gtkmain.c:2614
#48 0x01d73d7f in gtk_main_do_event (event=0x80c4458) at gtkmain.c:1889
#49 0x020193ae in _gdk_event_emit (event=0x80c4458) at gdkevents.c:71
#50 0x020402f8 in gdk_event_source_dispatch (source=0x80816a8, callback=0, user_data=0x0) at gdkeventsource.c:360
#51 0x02622d15 in g_main_dispatch (context=0x80804a0) at gmain.c:2441
#52 g_main_context_dispatch (context=0x80804a0) at gmain.c:3011
#53 0x02626b20 in g_main_context_iterate (context=0x80804a0, block=<value optimized out>, dispatch=1, self=0x80516e0) at gmain.c:3089
#54 0x02626f4f in g_main_loop_run (loop=0x815b7b0) at gmain.c:3297
#55 0x01d7430d in gtk_main () at gtkmain.c:1362
#56 0x0804b016 in main ()
(gdb)
Thanks,
Souvik
________________________________________
From: webkit-dev-bounces at lists.webkit.org [webkit-dev-bounces at lists.webkit.org] on behalf of Sergio Villar Senin [svillar at igalia.com]
Sent: Thursday, March 15, 2012 9:19 PM
To: webkit-dev at lists.webkit.org
Subject: Re: [webkit-dev] NPAPI plugin crashes while calling npnfuncs->invoke in GtkLauncher
En 15/03/12 08:13, souvik.datta at wipro.com escribiu:
> Hi,
>
> I am trying to load my NPAPI plugin in GtkLauncher ( built from source
> version-1.6.1 under Ubuntu 10.10). The plugin is used to communicate
> with a native shared library. Although I am able to load the plugin (
> Got NP_Initialize and NP_GetEntryPoints calls on the console ) and make
> successful calls to my native shared library from Java Scripts (through
> my plugin), but when I am trying to call a java script function "from"
> my plugin using :
>
> err = npnfuncs->invoke(npp_, console, id, args_temp,
> sizeof(args_temp) / sizeof(args_temp[0]),
> &voidResponse);
>
> I am observing a segmentation fault. This is always happenning.
Can you get a trace?
BR
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