Bug 103845

Summary:

REGRESSION(r134376): ASSERT(!m_mainBackingStore) hits in CoordinatedGraphicsLayer::syncImageBacking().

Product:

WebKit

Reporter:

Dongseong Hwang <dongseong.hwang>

Component:

Layout and Rendering

Assignee:

Dongseong Hwang <dongseong.hwang>

Status:

RESOLVED FIXED

Severity:

Normal

CC:

kenneth, noam, webkit.review.bot, zeno

Priority:

Version:

528+ (Nightly build)

Hardware:

Unspecified

OS:

Unspecified

Attachments:

Description	Flags
Patch	none

Dongseong Hwang

Reported 2012-12-02 15:43:52 PST

When loading http://www.webkit.org/blog-files/leaves/index.html, we can encounter following crash on Qt WK2. ASSERTION FAILED: !m_mainBackingStore /media/WDDisk/workspace/WebKit/WebKit/Source/WebKit2/WebProcess/WebPage/CoordinatedGraphics/CoordinatedGraphicsLayer.cpp(489) : void WebCore::CoordinatedGraphicsLayer::syncImageBacking() 1 0x7ffff751c6ae /media/WDDisk/workspace/WebKit/WebKit/WebKitBuild/qt5/Debug/lib/libWebKit2.so.1(_ZN7WebCore24CoordinatedGraphicsLayer16syncImageBackingEv+0x8e) [0x7ffff751c6ae] 2 0x7ffff751ce06 /media/WDDisk/workspace/WebKit/WebKit/WebKitBuild/qt5/Debug/lib/libWebKit2.so.1(_ZN7WebCore24CoordinatedGraphicsLayer37flushCompositingStateForThisLayerOnlyEv+0x18) [0x7ffff751ce06] 3 0x7ffff751c42c /media/WDDisk/workspace/WebKit/WebKit/WebKitBuild/qt5/Debug/lib/libWebKit2.so.1(_ZN7WebCore24CoordinatedGraphicsLayer21flushCompositingStateERKNS_9FloatRectE+0xbe) [0x7ffff751c42c] 4 0x7ffff751c46d /media/WDDisk/workspace/WebKit/WebKit/WebKitBuild/qt5/Debug/lib/libWebKit2.so.1(_ZN7WebCore24CoordinatedGraphicsLayer21flushCompositingStateERKNS_9FloatRectE+0xff) [0x7ffff751c46d] 5 0x7ffff751c46d /media/WDDisk/workspace/WebKit/WebKit/WebKitBuild/qt5/Debug/lib/libWebKit2.so.1(_ZN7WebCore24CoordinatedGraphicsLayer21flushCompositingStateERKNS_9FloatRectE+0xff) [0x7ffff751c46d] 6 0x7ffff751c46d /media/WDDisk/workspace/WebKit/WebKit/WebKitBuild/qt5/Debug/lib/libWebKit2.so.1(_ZN7WebCore24CoordinatedGraphicsLayer21flushCompositingStateERKNS_9FloatRectE+0xff) [0x7ffff751c46d] 7 0x7ffff2f7bf6c /media/WDDisk/workspace/WebKit/WebKit/WebKitBuild/qt5/Debug/lib/../lib/libWebCore.so.1(_ZN7WebCore21RenderLayerCompositor24flushPendingLayerChangesEb+0x23e) [0x7ffff2f7bf6c] 8 0x7ffff2caa8cb /media/WDDisk/workspace/WebKit/WebKit/WebKitBuild/qt5/Debug/lib/../lib/libWebCore.so.1(_ZN7WebCore9FrameView33flushCompositingStateForThisFrameEPNS_5FrameE+0xe3) [0x7ffff2caa8cb] 9 0x7ffff2caac05 /media/WDDisk/workspace/WebKit/WebKit/WebKitBuild/qt5/Debug/lib/../lib/libWebCore.so.1(_ZN7WebCore9FrameView39flushCompositingStateIncludingSubframesEv+0x31) [0x7ffff2caac05] 10 0x7ffff7525b96 /media/WDDisk/workspace/WebKit/WebKit/WebKitBuild/qt5/Debug/lib/libWebKit2.so.1(_ZN6WebKit20LayerTreeCoordinator24flushPendingLayerChangesEv+0x13a) [0x7ffff7525b96] 11 0x7ffff75268aa /media/WDDisk/workspace/WebKit/WebKit/WebKitBuild/qt5/Debug/lib/libWebKit2.so.1(_ZN6WebKit20LayerTreeCoordinator26performScheduledLayerFlushEv+0xc2) [0x7ffff75268aa] 12 0x7ffff75269a2 /media/WDDisk/workspace/WebKit/WebKit/WebKitBuild/qt5/Debug/lib/libWebKit2.so.1(_ZN6WebKit20LayerTreeCoordinator20layerFlushTimerFiredEPN7WebCore5TimerIS0_EE+0x1c) [0x7ffff75269a2] 13 0x7ffff7532644 /media/WDDisk/workspace/WebKit/WebKit/WebKitBuild/qt5/Debug/lib/libWebKit2.so.1(_ZN7WebCore5TimerIN6WebKit20LayerTreeCoordinatorEE5firedEv+0x6c) [0x7ffff7532644]

Attachments
Patch (4.31 KB, patch) 2012-12-02 16:07 PST, Dongseong Hwang	no flags	Details Formatted Diff Diff
View All Add attachment proposed patch, testcase, etc.

Dongseong Hwang

Comment 1 2012-12-02 16:07:18 PST

Created attachment 177159 [details] Patch

WebKit Review Bot

Comment 2 2012-12-02 16:46:03 PST

Comment on attachment 177159 [details] Patch Clearing flags on attachment: 177159 Committed r136355: <http://trac.webkit.org/changeset/136355>

WebKit Review Bot

Comment 3 2012-12-02 16:46:07 PST

All reviewed patches have been landed. Closing bug.

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