[Webkit-unassigned] [Bug 83567] New: [BlackBerry] Crash when tearing down web page rendered using WebPageCompositor

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=83567

           Summary: [BlackBerry] Crash when tearing down web page rendered
                    using WebPageCompositor
           Product: WebKit
           Version: 528+ (Nightly build)
          Platform: Unspecified
        OS/Version: Unspecified
            Status: UNCONFIRMED
          Severity: Normal
          Priority: P2
         Component: WebKit BlackBerry
        AssignedTo: webkit-unassigned at lists.webkit.org
        ReportedBy: anilsson at rim.com
                CC: rwlbuis at gmail.com, tonikitoo at webkit.org


This happens when the WebPage::setVisible(false) is called as part of tearing down a WebPage. This calls suspendRootLayerCommit() which schedules destroyLayerResources() on the UI thread. UI thread call stack:

WebCore::LayerRenderer::releaseLayerResources (this=0x0)
    at /home/anilsson/dev/webkit/Source/WebCore/platform/graphics/blackberry/LayerRenderer.cpp:191
191        if (m_hardwareCompositing) {
(gdb) p this
$1 = (WebCore::LayerRenderer * const) 0x0
(gdb) bt
#0  WebCore::LayerRenderer::releaseLayerResources (this=0x0)
    at /home/anilsson/dev/webkit/Source/WebCore/platform/graphics/blackberry/LayerRenderer.cpp:191
#1  0x7925dc2c in BlackBerry::WebKit::WebPageCompositorPrivate::releaseLayerResources (this=<optimized out>)
    at /home/anilsson/dev/webkit/Source/WebKit/blackberry/Api/WebPageCompositor.cpp:146
#2  0x7924c726 in BlackBerry::WebKit::WebPagePrivate::destroyLayerResources (
    this=<optimized out>)
    at /home/anilsson/dev/webkit/Source/WebKit/blackberry/Api/WebPage.cpp:5566
#3  0x7925c3aa in BlackBerry::Platform::MethodDelegate0<void (BlackBerry::WebKit::WebPagePrivate::*)(), BlackBerry::WebKit::WebPagePrivate>::execute (
    this=0xb7e980)
    at /home/anilsson/dev/staging/usr/include/browser/platform/BlackBerryPlatformMessageDelegate.h:770
#4  0x7a05ff98 in BlackBerry::Platform::ExecutableMessage::execute (
    this=<optimized out>)
    at /home/anilsson/dev/platform/blackberryplatform/BlackBerryPlatformExecutableMessage.cpp:38
...

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