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List:       kde-devel
Subject:    Issue with KWebwallet and QtWebKit23
From:       Lindsay Mathieson <lindsay.mathieson () gmail ! com>
Date:       2012-10-23 12:16:18
Message-ID: 27022291.4Gj3XFOGNq () lindsay-quantal
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I don't know if the following is a bug in QtWebKit-2.3 or whether it is changed \
behaviour that has triggered a bug in KWebWallet. 

Problem: 100% of CPU core usuage, memory consumption *rapidly* increasing (GB per \
10's of seconds)

Steps to reproduce
- Run Konqueror or Rekonq against a QtWebKit 2.3 build
- Open http://www.odt.co.nz (Many other Javascript heavy websites trigger it)
- Wait for the page load to finish


I can reproduce it 100% with Konqueror or Rekonq. It only happens with WebKit 2.3, \
2.2 is fine.

I ran rekonq under the debugger, paused it and found a frame trace with these:

#0 JSC::JSLock::unlock()() at \
/data/dev/qtwebkit-23/WebKitBuild/Release/lib/libQtWebKit.so.4:-1 #1 \
JSValueIsUndefined() at \
/data/dev/qtwebkit-23/WebKitBuild/Release/lib/libQtWebKit.so.4:-1 #2 \
JSC::Bindings::convertValueToQVariant(OpaqueJSContext const*, OpaqueJSValue const*, \
QMetaType::Type, int*, WTF::HashSet<OpaqueJSValue*, WTF::PtrHash<OpaqueJSValue*>, \
WTF::HashTraits<OpaqueJSValue*> >*, int, OpaqueJSValue const**)() at \
/data/dev/qtwebkit-23/WebKitBuild/Release/lib/libQtWebKit.so.4:-1 #3 \
JSC::Bindings::convertValueToQVariant(OpaqueJSContext const*, OpaqueJSValue const*, \
QMetaType::Type, int*, WTF::HashSet<OpaqueJSValue*, WTF::PtrHash<OpaqueJSValue*>, \
WTF::HashTraits<OpaqueJSValue*> >*, int, OpaqueJSValue const**)() at \
/data/dev/qtwebkit-23/WebKitBuild/Release/lib/libQtWebKit.so.4:-1 #4 \
JSC::Bindings::convertValueToQVariant(OpaqueJSContext const*, OpaqueJSValue const*, \
QMetaType::Type, int*, WTF::HashSet<OpaqueJSValue*, WTF::PtrHash<OpaqueJSValue*>, \
WTF::HashTraits<OpaqueJSValue*> >*, int, OpaqueJSValue const**)() at \
/data/dev/qtwebkit-23/WebKitBuild/Release/lib/libQtWebKit.so.4:-1 #5 \
JSC::Bindings::convertValueToQVariant(OpaqueJSContext const*, OpaqueJSValue const*, \
QMetaType::Type, int*, WTF::HashSet<OpaqueJSValue*, WTF::PtrHash<OpaqueJSValue*>, \
WTF::HashTraits<OpaqueJSValue*> >*, int, OpaqueJSValue const**)() at \
/data/dev/qtwebkit-23/WebKitBuild/Release/lib/libQtWebKit.so.4:-1 #6 \
JSC::Bindings::convertValueToQVariant(OpaqueJSContext const*, OpaqueJSValue const*, \
QMetaType::Type, int*, WTF::HashSet<OpaqueJSValue*, WTF::PtrHash<OpaqueJSValue*>, \
WTF::HashTraits<OpaqueJSValue*> >*, int, OpaqueJSValue const**)() at \
/data/dev/qtwebkit-23/WebKitBuild/Release/lib/libQtWebKit.so.4:-1 #7 \
JSC::Bindings::convertValueToQVariant(OpaqueJSContext const*, OpaqueJSValue const*, \
QMetaType::Type, int*, WTF::HashSet<OpaqueJSValue*, WTF::PtrHash<OpaqueJSValue*>, \
WTF::HashTraits<OpaqueJSValue*> >*, int, OpaqueJSValue const**)() at \
/data/dev/qtwebkit-23/WebKitBuild/Release/lib/libQtWebKit.so.4:-1 #8 \
JSC::Bindings::convertValueToQVariant(OpaqueJSContext const*, OpaqueJSValue const*, \
QMetaType::Type, int*, WTF::HashSet<OpaqueJSValue*, WTF::PtrHash<OpaqueJSValue*>, \
WTF::HashTraits<OpaqueJSValue*> >*, int, OpaqueJSValue const**)() at \
/data/dev/qtwebkit-23/WebKitBuild/Release/lib/libQtWebKit.so.4:-1


For hundreds of lines.

They start from here:

#104 KWebWallet::fillFormData(QWebFrame*, bool)() at /usr/lib/libkdewebkit.so.5:-1
#105 WebPage::loadFinished() at /home/lindsay/Projects/rekonq/src/webpage.cpp:493

If I comment out the appropriate line in rekonq:
  wallet()->fillFormData(mainFrame());

Then the problem stops, though of course form data is no longer auto filled.

Would this be a problem for WebKit or KWallet?

I have the full frame trace saved if desired.

-- 
Lindsay Mathieson


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