Bug 103845 - REGRESSION(r134376): ASSERT(!m_mainBackingStore) hits in CoordinatedGraphicsLayer::syncImageBacking().
Summary: REGRESSION(r134376): ASSERT(!m_mainBackingStore) hits in CoordinatedGraphicsL...
Status: RESOLVED FIXED
Alias: None
Product: WebKit
Classification: Unclassified
Component: Layout and Rendering (show other bugs)
Version: 528+ (Nightly build)
Hardware: Unspecified Unspecified
: P2 Normal
Assignee: Dongseong Hwang
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2012-12-02 15:43 PST by Dongseong Hwang
Modified: 2012-12-02 16:46 PST (History)
4 users (show)

See Also:

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

Note You need to log in before you can comment on or make changes to this bug.
Description Dongseong Hwang 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]
Comment 1 Dongseong Hwang 2012-12-02 16:07:18 PST 
Created attachment 177159 [details]
Patch
Comment 2 WebKit Review Bot 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>
Comment 3 WebKit Review Bot 2012-12-02 16:46:07 PST 
All reviewed patches have been landed.  Closing bug.