Bug 84172 – [Qt][WK2] Minibrowser asserts on startup at QtViewportInteractionEngine::ensureContentWithinViewportBoundary()

• Component: WebKit Qt
• Status: RESOLVED FIXED

[alan]

/home/zbujtas/WebKit/Source/WebKit2/UIProcess/qt/QtViewportInteractionEngine.cpp(400) : bool WebKit::QtViewportInteractionEngine::ensureContentWithinViewportBoundary(bool)
1   0x7f03fe447ae2 /home/zbujtas/WebKit/WebKitBuild/Debug/lib/libQtWebKit.so.5(_ZN6WebKit27QtViewportInteractionEngine35ensureContentWithinViewportBoundaryEb+0x4c) [0x7f03fe447ae2]
2   0x7f03fe353ec9 /home/zbujtas/WebKit/WebKitBuild/Debug/lib/libQtWebKit.so.5(_ZN29QQuickWebViewFlickablePrivate27didChangeViewportPropertiesERKN7WebCore18ViewportAttributesE+0x2bb) [0x7f03fe353ec9]
3   0x7f03fe440008 /home/zbujtas/WebKit/WebKitBuild/Debug/lib/libQtWebKit.so.5(_ZN12QtPageClient27didChangeViewportPropertiesERKN7WebCore18ViewportAttributesE+0x36) [0x7f03fe440008]
4   0x7f03fe3edf44 /home/zbujtas/WebKit/WebKitBuild/Debug/lib/libQtWebKit.so.5(_ZN6WebKit12WebPageProxy27didChangeViewportPropertiesERKN7WebCore18ViewportAttributesE+0x38) [0x7f03fe3edf44]
5   0x7f03fe575c80 /home/zbujtas/WebKit/WebKitBuild/Debug/lib/libQtWebKit.so.5(_ZN7CoreIPC18callMemberFunctionIN6WebKit12WebPageProxyEMS2_FvRKN7WebCore18ViewportAttributesEES4_EEvRKNS_10Arguments1IT1_EEPT_T0_+0x59) [0x7f03fe575c80]
6   0x7f03fe570e6c /home/zbujtas/WebKit/WebKitBuild/Debug/lib/libQtWebKit.so.5(_ZN7CoreIPC13handleMessageIN8Messages12WebPageProxy27DidChangeViewportPropertiesEN6WebKit12WebPageProxyEMS5_FvRKN7WebCore18ViewportAttributesEEEEvPNS_15ArgumentDecoderEPT0_T1_+0x59) [0x7f03fe570e6c]
7   0x7f03fe56e774 /home/zbujtas/WebKit/WebKitBuild/Debug/lib/libQtWebKit.so.5(_ZN6WebKit12WebPageProxy29didReceiveWebPageProxyMessageEPN7CoreIPC10ConnectionENS1_9MessageIDEPNS1_15ArgumentDecoderE+0x1a8) [0x7f03fe56e774]
8   0x7f03fe3e94b0 /home/zbujtas/WebKit/WebKitBuild/Debug/lib/libQtWebKit.so.5(_ZN6WebKit12WebPageProxy17didReceiveMessageEPN7CoreIPC10ConnectionENS1_9MessageIDEPNS1_15ArgumentDecoderE+0xea) [0x7f03fe3e94b0]
9   0x7f03fe420ec4 /home/zbujtas/WebKit/WebKitBuild/Debug/lib/libQtWebKit.so.5(_ZN6WebKit15WebProcessProxy17didReceiveMessageEPN7CoreIPC10ConnectionENS1_9MessageIDEPNS1_15ArgumentDecoderE+0x196) [0x7f03fe420ec4]
10  0x7f03fe3a4a88 /home/zbujtas/WebKit/WebKitBuild/Debug/lib/libQtWebKit.so.5(_ZN6WebKit25WebConnectionToWebProcess17didReceiveMessageEPN7CoreIPC10ConnectionENS1_9MessageIDEPNS1_15ArgumentDecoderE+0x12e) [0x7f03fe3a4a88]
11  0x7f03fe2d5ed7 /home/zbujtas/WebKit/WebKitBuild/Debug/lib/libQtWebKit.so.5(_ZN7CoreIPC10Connection15dispatchMessageERNS0_7MessageINS_15ArgumentDecoderEEE+0x14b) [0x7f03fe2d5ed7]
12  0x7f03fe2d60b1 /home/zbujtas/WebKit/WebKitBuild/Debug/lib/libQtWebKit.so.5(_ZN7CoreIPC10Connection16dispatchMessagesEv+0xaf) [0x7f03fe2d60b1]
13  0x7f03fe2dfec0 /home/zbujtas/WebKit/WebKitBuild/Debug/lib/libQtWebKit.so.5(_ZN3WTF15FunctionWrapperIMN7CoreIPC10ConnectionEFvvEEclEPS2_+0x58) [0x7f03fe2dfec0]
14  0x7f03fe2dfc7e /home/zbujtas/WebKit/WebKitBuild/Debug/lib/libQtWebKit.so.5(_ZN3WTF17BoundFunctionImplINS_15FunctionWrapperIMN7CoreIPC10ConnectionEFvvEEEFvPS3_EEclEv+0x32) [0x7f03fe2dfc7e]
15  0x7f03fe3d19aa /home/zbujtas/WebKit/WebKitBuild/Debug/lib/libQtWebKit.so.5(_ZNK3WTF8FunctionIFvvEEclEv+0x72) [0x7f03fe3d19aa]
16  0x7f03fee6e572 /home/zbujtas/WebKit/WebKitBuild/Debug/lib/libQtWebKit.so.5(_ZN7WebCore7RunLoop11performWorkEv+0x74) [0x7f03fee6e572]
17  0x7f03ff10d1a1 /home/zbujtas/WebKit/WebKitBuild/Debug/lib/libQtWebKit.so.5(_ZN7WebCore7RunLoop11TimerObject11performWorkEv+0x3b) [0x7f03ff10d1a1]
18  0x7f03ff10dccf /home/zbujtas/WebKit/WebKitBuild/Debug/lib/libQtWebKit.so.5(+0x29dfccf) [0x7f03ff10dccf]
19  0x7f03fbc21753 /home/zbujtas/qt5/qtbase/lib/libQtCore.so.5(_ZN14QMetaCallEvent13placeMetaCallEP7QObject+0xc3) [0x7f03fbc21753]
20  0x7f03fbc225cc /home/zbujtas/qt5/qtbase/lib/libQtCore.so.5(_ZN7QObject5eventEP6QEvent+0x124) [0x7f03fbc225cc]
21  0x7f03fbbedfd8 /home/zbujtas/qt5/qtbase/lib/libQtCore.so.5(_ZN23QCoreApplicationPrivate13notify_helperEP7QObjectP6QEvent+0x76) [0x7f03fbbedfd8]
22  0x7f03fbbedd18 /home/zbujtas/qt5/qtbase/lib/libQtCore.so.5(_ZN16QCoreApplication6notifyEP7QObjectP6QEvent+0xc2) [0x7f03fbbedd18]
23  0x7f03fbfceaaf /home/zbujtas/qt5/qtbase/lib/libQtGui.so.5(_ZN15QGuiApplication6notifyEP7QObjectP6QEvent+0xb3) [0x7f03fbfceaaf]
24  0x40afe6 ./bin/MiniBrowser() [0x40afe6]
25  0x7f03fbbedc24 /home/zbujtas/qt5/qtbase/lib/libQtCore.so.5(_ZN16QCoreApplication14notifyInternalEP7QObjectP6QEvent+0x9e) [0x7f03fbbedc24]
26  0x7f03fbbf18d9 /home/zbujtas/qt5/qtbase/lib/libQtCore.so.5(_ZN16QCoreApplication9sendEventEP7QObjectP6QEvent+0x51) [0x7f03fbbf18d9]
27  0x7f03fbbeecb8 /home/zbujtas/qt5/qtbase/lib/libQtCore.so.5(_ZN23QCoreApplicationPrivate16sendPostedEventsEP7QObjectiP11QThreadData+0x452) [0x7f03fbbeecb8]
28  0x7f03fbbee863 /home/zbujtas/qt5/qtbase/lib/libQtCore.so.5(_ZN16QCoreApplication16sendPostedEventsEP7QObjecti+0x2d) [0x7f03fbbee863]
29  0x7f03fbc56680 /home/zbujtas/qt5/qtbase/lib/libQtCore.so.5(+0x2af680) [0x7f03fbc56680]
30  0x7f03f84aca5d /lib/x86_64-linux-gnu/libglib-2.0.so.0(g_main_context_dispatch+0x1dd) [0x7f03f84aca5d]
31  0x7f03f84ad258 /lib/x86_64-linux-gnu/libglib-2.0.so.0(+0x45258) [0x7f03f84ad258]


apparently, after the viewport computing refactor, QtViewportInteractionEngine::ensureContentWithinViewportBoundary() can be called with resumed engine.
let's remove the ASSERT() for now to be able to startup the browser and re-think the validity of this ASSERT() when refactoring settles down.

[alan]

Created attachment 137573 [details]
Patch

[Simon Hausmann]

Comment on attachment 137573 [details]
Patch

Seems reasonable to me and I can see the other callers respecting m_suspendCount.

[Simon Hausmann]

*** Bug 84159 has been marked as a duplicate of this bug. ***

[WebKit Review Bot]

Comment on attachment 137573 [details]
Patch

Clearing flags on attachment: 137573

Committed r114496: <http://trac.webkit.org/changeset/114496>

[WebKit Review Bot]

All reviewed patches have been landed.  Closing bug.