[Webkit-unassigned] [Bug 35738] New: [Qt] Crash when loading html with input tag

bugzilla-daemon at webkit.org bugzilla-daemon at webkit.org
Thu Mar 4 06:44:10 PST 2010


https://bugs.webkit.org/show_bug.cgi?id=35738

           Summary: [Qt] Crash when loading html with input tag
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Other
        OS/Version: Mac OS X 10.5
            Status: NEW
          Keywords: Qt
          Severity: Normal
          Priority: P2
         Component: New Bugs
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: vestbo at webkit.org


This bug report originated from internal issue QT-1960


--- Comments ---


Product: Qt

Function: webkit

Version: 4.5.1

Platform: WindowsXP

OS Name Microsoft(R) Windows(R) XP Professional x64 Edition

Version 5.2.3790 Service Pack 2 Build 3790

Other OS Description  Not Available

OS Manufacturer Microsoft Corporation

System Manufacturer Dell Inc.

System Model Precision WorkStation 490

System Type x64-based PC

Processor EM64T Family 6 Model 15 Stepping 6 GenuineIntel ~2660 Mhz

Processor EM64T Family 6 Model 15 Stepping 6 GenuineIntel ~2660 Mhz

BIOS Version/Date Dell Inc. A08, 4/25/2008

SMBIOS Version 2.3

Windows Directory C:\WINDOWS

System Directory C:\WINDOWS\system32

Boot Device \Device\HarddiskVolume2

Locale United States

Hardware Abstraction Layer Version = "5.2.3790.3959
(srv03_sp2_rtm.070216-1710)"

Time Zone Pacific Daylight Time

Total Physical Memory 2,045.48 MB

Available Physical Memory 495.47 MB

Total Virtual Memory 3.87 GB

Available Virtual Memory 2.57 GB

Page File Space 2.00 GB

Page File C:\pagefile.sys

Compiler: MSVC

Microsoft Visual Studio 2008

Version 9.0.30729.1 SP

Microsoft .NET Framework

Version 3.5 SP1

Installed Edition: Professional

Microsoft Visual Basic 2008   91605-031-5000002-60931

Microsoft Visual Basic 2008

Microsoft Visual C# 2008   91605-031-5000002-60931

Microsoft Visual C# 2008

Microsoft Visual C++ 2008   91605-031-5000002-60931

Microsoft Visual C++ 2008

Microsoft Visual Studio 2008 Tools for Office   91605-031-5000002-60931

Microsoft Visual Studio 2008 Tools for Office

Microsoft Visual Web Developer 2008   91605-031-5000002-60931

Microsoft Visual Web Developer 2008

Crystal Reports    AAJ60-G0MSA4K-68000CF

Crystal Reports Basic for Visual Studio 2008

Hotfix for Microsoft Visual Studio 2008 Professional Edition - ENU (KB944899)  
KB944899

This hotfix is for Microsoft Visual Studio 2008 Professional Edition - ENU.

If you later install a more recent service pack, this hotfix will be
uninstalled automatically.

For more information, visit http://support.microsoft.com/kb/944899.

Hotfix for Microsoft Visual Studio 2008 Professional Edition - ENU (KB945282)  
KB945282

This hotfix is for Microsoft Visual Studio 2008 Professional Edition - ENU.

If you later install a more recent service pack, this hotfix will be
uninstalled automatically.

For more information, visit http://support.microsoft.com/kb/945282.

Hotfix for Microsoft Visual Studio 2008 Professional Edition - ENU (KB946040)  
KB946040

This hotfix is for Microsoft Visual Studio 2008 Professional Edition - ENU.

If you later install a more recent service pack, this hotfix will be
uninstalled automatically.

For more information, visit http://support.microsoft.com/kb/946040.

Hotfix for Microsoft Visual Studio 2008 Professional Edition - ENU (KB946308)  
KB946308

This hotfix is for Microsoft Visual Studio 2008 Professional Edition - ENU.

If you later install a more recent service pack, this hotfix will be
uninstalled automatically.

For more information, visit http://support.microsoft.com/kb/946308.

Hotfix for Microsoft Visual Studio 2008 Professional Edition - ENU (KB946344)  
KB946344

This hotfix is for Microsoft Visual Studio 2008 Professional Edition - ENU.

If you later install a more recent service pack, this hotfix will be
uninstalled automatically.

For more information, visit http://support.microsoft.com/kb/946344.

Hotfix for Microsoft Visual Studio 2008 Professional Edition - ENU (KB946581)  
KB946581

This hotfix is for Microsoft Visual Studio 2008 Professional Edition - ENU.

If you later install a more recent service pack, this hotfix will be
uninstalled automatically.

For more information, visit http://support.microsoft.com/kb/946581.

Hotfix for Microsoft Visual Studio 2008 Professional Edition - ENU (KB947171)  
KB947171

This hotfix is for Microsoft Visual Studio 2008 Professional Edition - ENU.

If you later install a more recent service pack, this hotfix will be
uninstalled automatically.

For more information, visit http://support.microsoft.com/kb/947171.

Hotfix for Microsoft Visual Studio 2008 Professional Edition - ENU (KB947173)  
KB947173

This hotfix is for Microsoft Visual Studio 2008 Professional Edition - ENU.

If you later install a more recent service pack, this hotfix will be
uninstalled automatically.

For more information, visit http://support.microsoft.com/kb/947173.

Hotfix for Microsoft Visual Studio 2008 Professional Edition - ENU (KB947180)  
KB947180

This hotfix is for Microsoft Visual Studio 2008 Professional Edition - ENU.

If you later install a more recent service pack, this hotfix will be
uninstalled automatically.

For more information, visit http://support.microsoft.com/kb/947180.

Hotfix for Microsoft Visual Studio 2008 Professional Edition - ENU (KB947540)  
KB947540

This hotfix is for Microsoft Visual Studio 2008 Professional Edition - ENU.

If you later install a more recent service pack, this hotfix will be
uninstalled automatically.

For more information, visit http://support.microsoft.com/kb/947540.

Hotfix for Microsoft Visual Studio 2008 Professional Edition - ENU (KB947789)  
KB947789

This hotfix is for Microsoft Visual Studio 2008 Professional Edition - ENU.

If you later install a more recent service pack, this hotfix will be
uninstalled automatically.

For more information, visit http://support.microsoft.com/kb/947789.

Hotfix for Microsoft Visual Studio 2008 Professional Edition - ENU (KB948127)  
KB948127

This hotfix is for Microsoft Visual Studio 2008 Professional Edition - ENU.

If you later install a more recent service pack, this hotfix will be
uninstalled automatically.

For more information, visit http://support.microsoft.com/kb/948127.

Microsoft Visual Studio 2008 Professional Edition - ENU Service Pack 1
(KB945140)   KB945140

This service pack is for Microsoft Visual Studio 2008 Professional Edition -
ENU.

If you later install a more recent service pack, this service pack will be
uninstalled automatically.

For more information, visit http://support.microsoft.com/kb/945140.

Microsoft Visual Studio 2008 Professional Edition - ENU Service Pack 1
(KB947888)   KB947888

This service pack is for Microsoft Visual Studio 2008 Professional Edition -
ENU.

If you later install a more recent service pack, this service pack will be
uninstalled automatically.

For more information, visit http://support.microsoft.com/kb/947888.

Microsoft Visual Studio 2008 Professional Edition - ENU Service Pack 1
(KB948484)   KB948484

This service pack is for Microsoft Visual Studio 2008 Professional Edition -
ENU.

If you later install a more recent service pack, this service pack will be
uninstalled automatically.

For more information, visit http://support.microsoft.com/kb/948484.

Qt4 Add-in 1.0.0

For more information about the Qt 4 Add-in, see

http://www.qtsoftware.com

Copyright (c) 2008 Nokia Corporation and/or its subsidiary(-ies)

Short description: Crash when loading html with input tag

Did:

Loaded a simple html page in an application that uses WebKit (a QWebView).

Expected to see:

An input form displayed in the WebKit widget.

Got instead:

A crash (there was an attempt QObject::parent for a NULL object).

More details:

Here is the html:

<html>

<head>

</head>

<body>

<input type="text" name="tempio" id="TemperatureIO" />

</body>

</html>

The demo browser displays this html file correctly, but it crashes in my
application.

The issue seems to be that

RenderThemeQt::computeSizeBasedOnStyle(RenderStyle* renderStyle)

calls

QStyleSheetStyle::sizeFromContents(ContentsType ct, const QStyleOption *opt,
const QSize &csz, const QWidget *w) const

as

applicationStyle->sizeFromContents(QStyle::CT_LineEdit, &opt,
QSize(w,h).expandedTo(QApplication::globalStrut()), 0);

but QStyleSheetStyle::sizeFromContents, in the 'case CT_LineEdit:' section,
uses w without checking for NULL.

Here is the final stack trace:

QtCored4.dll!QObject::parent()  Line 243 + 0xa bytes C++

QtGuid4.dll!QWidget::parentWidget()  Line 988 + 0x10 bytes C++

> QtGuid4.dll!QStyleSheetStyle::sizeFromContents(QStyle::ContentsType
ct=CT_LineEdit, const QStyleOption * opt=0x0012d050, const QSize &
csz={...}, const QWidget * w=0x00000000)  Line 4929 + 0x8 bytes C++

QtWebKitd4.dll!WebCore::RenderThemeQt::computeSizeBasedOnStyle(WebCore::RenderStyle
* renderStyle=0x09cba508)  Line 350 C++

QtWebKitd4.dll!WebCore::RenderThemeQt::adjustTextFieldStyle(WebCore::CSSStyleSelector
* __formal=0x09d082b0, WebCore::RenderStyle * style=0x09cba508,
WebCore::CSSStyleSelector * __formal=0x09d082b0)  Line 497 C++

QtWebKitd4.dll!WebCore::RenderTheme::adjustStyle(WebCore::CSSStyleSelector *
selector=0x09d082b0, WebCore::RenderStyle * style=0x09cba508, WebCore::Element
* e=0x09dde468, bool UAHasAppearance=true, const WebCore::BorderData &
border={...}, const WebCore::FillLayer & background={...}, const
WebCore::Color & backgroundColor={...})  Line 172 + 0x1c bytes C++

QtWebKitd4.dll!WebCore::CSSStyleSelector::adjustRenderStyle(WebCore::RenderStyle
* style=0x09cba508, WebCore::Element * e=0x09dde468)  Line 1555 C++

QtWebKitd4.dll!WebCore::CSSStyleSelector::styleForElement(WebCore::Element *
e=0x09dde468, WebCore::RenderStyle * defaultParent=0x00000000, bool
allowSharing=true, bool resolveForRootDefault=false)  Line 1225 C++

QtWebKitd4.dll!WebCore::Node::styleForRenderer()  Line 1223 + 0x24 bytes C++

QtWebKitd4.dll!WebCore::Node::createRendererIfNeeded()  Line 1205 + 0xc bytes
C++

QtWebKitd4.dll!WebCore::Element::attach()  Line 647 C++

QtWebKitd4.dll!WebCore::HTMLFormControlElement::attach()  Line 95 C++

QtWebKitd4.dll!WebCore::HTMLInputElement::attach()  Line 778 C++

QtWebKitd4.dll!WebCore::HTMLParser::insertNode(WebCore::Node * n=0x09dde468,
bool flat=false)  Line 353 C++

QtWebKitd4.dll!WebCore::HTMLParser::parseToken(WebCore::Token * t=0x09e26650) 
Line 258 + 0x19 bytes C++

QtWebKitd4.dll!WebCore::HTMLTokenizer::processToken()  Line 1898 + 0x20 bytes
C++

QtWebKitd4.dll!WebCore::HTMLTokenizer::parseTag(WebCore::SegmentedString &
src={...}, WebCore::HTMLTokenizer::State state={...})  Line 1480 + 0x12 bytes
C++

QtWebKitd4.dll!WebCore::HTMLTokenizer::write(const WebCore::SegmentedString
& str={...}, bool appendData=true)  Line 1726 + 0x23 bytes C++

QtWebKitd4.dll!WebCore::FrameLoader::write(const char * str=0x00000000, int
len=0, bool flush=true)  Line 1035 + 0x23 bytes C++

QtWebKitd4.dll!WebCore::FrameLoader::endIfNotLoadingMainResource()  Line 1072
C++

QtWebKitd4.dll!WebCore::FrameLoader::end()  Line 1057 C++

QtWebKitd4.dll!WebCore::DocumentLoader::finishedLoading()  Line 345 C++

QtWebKitd4.dll!WebCore::FrameLoader::finishedLoading()  Line 2985 C++

QtWebKitd4.dll!WebCore::MainResourceLoader::didFinishLoading()  Line 352 C++

QtWebKitd4.dll!WebCore::ResourceLoader::didFinishLoading(WebCore::ResourceHandle
* __formal=0x0c3bf2e0)  Line 423 C++

QtWebKitd4.dll!WebCore::QNetworkReplyHandler::finish()  Line 226 C++

QtWebKitd4.dll!WebCore::QNetworkReplyHandler::qt_metacall(QMetaObject::Call
_c=InvokeMetaMethod, int _id=0, void * * _a=0x0987a230)  Line 69 + 0x8 bytes
C++

QtCored4.dll!QMetaCallEvent::placeMetaCall(QObject * object=0x0c3bd440)  Line
490 C++

QtCored4.dll!QObject::event(QEvent * e=0x09992000)  Line 1109 + 0x14 bytes C++

QtGuid4.dll!QApplicationPrivate::notify_helper(QObject * receiver=0x0c3bd440,
QEvent * e=0x09992000)  Line 4057 + 0x11 bytes C++

QtGuid4.dll!QApplication::notify(QObject * receiver=0x0c3bd440, QEvent *
e=0x09992000)  Line 3604 + 0x10 bytes C++

QtCored4.dll!QCoreApplication::notifyInternal(QObject * receiver=0x0c3bd440,
QEvent * event=0x09992000)  Line 610 + 0x15 bytes C++

QtCored4.dll!QCoreApplication::sendEvent(QObject * receiver=0x0c3bd440, QEvent
* event=0x09992000)  Line 213 + 0x39 bytes C++

QtCored4.dll!QCoreApplicationPrivate::sendPostedEvents(QObject *
receiver=0x00000000, int event_type=0, QThreadData * data=0x04dc1348)  Line
1247 + 0xd bytes C++

QtCored4.dll!QEventDispatcherWin32::processEvents(QFlags<enum
QEventLoop::ProcessEventsFlag> flags={...})  Line 679 + 0x10 bytes C++

QtGuid4.dll!QGuiEventDispatcherWin32::processEvents(QFlags<enum
QEventLoop::ProcessEventsFlag> flags={...})  Line 1182 + 0x15 bytes C++

QtCored4.dll!QEventLoop::processEvents(QFlags<enum
QEventLoop::ProcessEventsFlag> flags={...})  Line 150 C++

QtCored4.dll!QEventLoop::exec(QFlags<enum QEventLoop::ProcessEventsFlag>
flags={...})  Line 200 + 0x2d bytes C++

QtCored4.dll!QCoreApplication::exec()  Line 888 + 0x15 bytes C++

QtGuid4.dll!QApplication::exec()  Line 3527 C++

OdysseyQtInstructor.exe!main(int argc=1, char * * argv=0x04b6fa78)  Line 69 +
0x8 bytes C++

OdysseyQtInstructor.exe!WinMain(HINSTANCE__ * instance=0x00400000, HINSTANCE__
* prevInstance=0x00000000, char * __formal=0x002220ef, int cmdShow=1)  Line 136
+ 0x12 bytes C++

OdysseyQtInstructor.exe!__tmainCRTStartup()  Line 578 + 0x35 bytes C

OdysseyQtInstructor.exe!WinMainCRTStartup()  Line 403 C

kernel32.dll!7d4e7d42()

[Frames below may be incorrect and/or missing, no symbols loaded for
kernel32.dll]

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