[Webkit-unassigned] [Bug 206068] New: REGRESSION: [ Catalina wk2 Debug ] fast/images/animated-image-loop-count.html is a flaky crash

[bugzilla-daemon at webkit.org]

https://bugs.webkit.org/show_bug.cgi?id=206068

            Bug ID: 206068
           Summary: REGRESSION: [ Catalina wk2 Debug ]
                    fast/images/animated-image-loop-count.html is a flaky
                    crash
           Product: WebKit
           Version: WebKit Nightly Build
          Hardware: Unspecified
                OS: Unspecified
            Status: NEW
          Severity: Normal
          Priority: P2
         Component: Images
          Assignee: webkit-unassigned at lists.webkit.org
          Reporter: tsavell at apple.com

fast/images/animated-image-loop-count.html

Description:
This test seems to have begun crashing around r254298 only on Catalina wk2 Debug. this is not reproducing locally for m right now

History:
https://results.webkit.org/?suite=layout-tests&test=fast%2Fimages%2Fanimated-image-loop-count.html

Crash Log:

No crash log found for com.apple.WebKit.WebContent.Development:3398.

stdout:

stderr:
2   0x61b6f22eb WTFCrashWithInfo(int, char const*, char const*, int)
3   0x61efbfb66 WebCore::ImageSource::~ImageSource()
4   0x61efbfcf5 WebCore::ImageSource::~ImageSource()
5   0x61ef213ea WTF::ThreadSafeRefCounted<WebCore::ImageSource, (WTF::DestructionThread)0>::deref() const::'lambda'()::operator()() const
6   0x61ef213ad WTF::ThreadSafeRefCounted<WebCore::ImageSource, (WTF::DestructionThread)0>::deref() const
7   0x61ef2135f WTF::Ref<WebCore::ImageSource, WTF::DumbPtrTraits<WebCore::ImageSource> >::~Ref()
8   0x61eef23f5 WTF::Ref<WebCore::ImageSource, WTF::DumbPtrTraits<WebCore::ImageSource> >::~Ref()
9   0x61efc99ec WebCore::ImageSource::startAsyncDecodingQueue()::$_1::~$_1()
10  0x61efc1d85 WebCore::ImageSource::startAsyncDecodingQueue()::$_1::~$_1()
11  0x61efcfe31 WTF::Detail::CallableWrapper<WebCore::ImageSource::startAsyncDecodingQueue()::$_1, void>::~CallableWrapper()
12  0x61efcf915 WTF::Detail::CallableWrapper<WebCore::ImageSource::startAsyncDecodingQueue()::$_1, void>::~CallableWrapper()
13  0x61efcf939 WTF::Detail::CallableWrapper<WebCore::ImageSource::startAsyncDecodingQueue()::$_1, void>::~CallableWrapper()
14  0x635b2e03f std::__1::default_delete<WTF::Detail::CallableWrapperBase<void> >::operator()(WTF::Detail::CallableWrapperBase<void>*) const
15  0x635b2dfbf std::__1::unique_ptr<WTF::Detail::CallableWrapperBase<void>, std::__1::default_delete<WTF::Detail::CallableWrapperBase<void> > >::reset(WTF::Detail::CallableWrapperBase<void>*)
16  0x635b2df59 std::__1::unique_ptr<WTF::Detail::CallableWrapperBase<void>, std::__1::default_delete<WTF::Detail::CallableWrapperBase<void> > >::~unique_ptr()
17  0x635b2df35 std::__1::unique_ptr<WTF::Detail::CallableWrapperBase<void>, std::__1::default_delete<WTF::Detail::CallableWrapperBase<void> > >::~unique_ptr()
18  0x635b2df15 WTF::Function<void ()>::~Function()
19  0x635b2d215 WTF::Function<void ()>::~Function()
20  0x635c46de3 WTF::WorkQueue::dispatch(WTF::Function<void ()>&&)::$_0::~$_0()
21  0x635c46125 WTF::WorkQueue::dispatch(WTF::Function<void ()>&&)::$_0::~$_0()
22  0x635c467f0 WTF::BlockPtr<void ()> WTF::BlockPtr<void ()>::fromCallable<WTF::WorkQueue::dispatch(WTF::Function<void ()>&&)::$_0>(WTF::WorkQueue::dispatch(WTF::Function<void ()>&&)::$_0)::'lambda'(void const*)::operator()(void const*) const
23  0x635c46775 WTF::BlockPtr<void ()> WTF::BlockPtr<void ()>::fromCallable<WTF::WorkQueue::dispatch(WTF::Function<void ()>&&)::$_0>(WTF::WorkQueue::dispatch(WTF::Function<void ()>&&)::$_0)::'lambda'(void const*)::__invoke(void const*)
24  0x7fff709a0bed _Block_release
25  0x7fff708f94de _dispatch_client_callout
26  0x7fff708fea9e _dispatch_lane_serial_drain
27  0x7fff708ff422 _dispatch_lane_invoke
28  0x7fff70908aa1 _dispatch_workloop_worker_thread
29  0x7fff70b52763 _pthread_wqthread
30  0x7fff70b525c3 start_wqthread
LEAK: 1 WebPageProxy

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