[Webkit-unassigned] [Bug 217112] New: Canvas layout tests sometimes try to create a GPU Process connection during garbage collection

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=217112

            Bug ID: 217112
           Summary: Canvas layout tests sometimes try to create a GPU
                    Process connection during garbage collection
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Canvas
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: wenson_hsieh at apple.com
                CC: dino at apple.com

1   0x15e1a1779 WTFCrash
2   0x10f41d7cb WTFCrashWithInfo(int, char const*, char const*, int)
3   0x11093ae59 WTF::WeakPtr<WebKit::RemoteRenderingBackend, WTF::EmptyCounter>::operator->() const
4   0x11093b44a WebKit::RemoteImageBufferMessageHandler::waitForCreateImageBufferBackend()
5   0x110964340 WebKit::RemoteImageBuffer<WebKit::ImageBufferShareableIOSurfaceBackend>::ensureBackendCreated() const
6   0x10fa3493c WebCore::ConcreteImageBuffer<WebKit::ImageBufferShareableIOSurfaceBackend>::memoryCost() const
7   0x1430ace73 WebCore::CanvasBase::memoryCost() const
8   0x140b9cc5c WebCore::JSHTMLCanvasElement::visitChildren(JSC::JSCell*, JSC::SlotVisitor&)
9   0x15f3d4d64 JSC::SlotVisitor::visitChildren(JSC::JSCell const*)
10  0x15f3dc6ef JSC::SlotVisitor::drain(WTF::MonotonicTime)::$_3::operator()(JSC::MarkStackArray&) const
11  0x15f3d5294 JSC::IterationStatus JSC::SlotVisitor::forEachMarkStack<JSC::SlotVisitor::drain(WTF::MonotonicTime)::$_3>(JSC::SlotVisitor::drain(WTF::MonotonicTime)::$_3 const&)
12  0x15f3d521a JSC::SlotVisitor::drain(WTF::MonotonicTime)
13  0x15f3d5f77 JSC::SlotVisitor::drainFromShared(JSC::SlotVisitor::SharedDrainMode, WTF::MonotonicTime)
14  0x15f36d24b JSC::Heap::runBeginPhase(JSC::GCConductor)::$_19::operator()() const
15  0x15f36d0ae WTF::SharedTaskFunctor<void (), JSC::Heap::runBeginPhase(JSC::GCConductor)::$_19>::run()
16  0x15e227129 WTF::ParallelHelperClient::runTask(WTF::RefPtr<WTF::SharedTask<void ()>, WTF::DumbPtrTraits<WTF::SharedTask<void ()> >, WTF::DefaultRefDerefTraits<WTF::SharedTask<void ()> > > const&)
17  0x15e22825a WTF::ParallelHelperPool::Thread::work()
18  0x15e1b7913 WTF::AutomaticThread::start(WTF::AbstractLocker const&)::$_0::operator()() const
19  0x15e1b74fe WTF::Detail::CallableWrapper<WTF::AutomaticThread::start(WTF::AbstractLocker const&)::$_0, void>::call()
20  0x15e1c9a22 WTF::Function<void ()>::operator()() const
21  0x15e279998 WTF::Thread::entryPoint(WTF::Thread::NewThreadContext*)
22  0x15e285a68 WTF::wtfThreadEntryPoint(void*)
23  0x7fff2030f9b4 _pthread_start
24  0x7fff2030b4d7 thread_start

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