NEW 106768
m_initiatorMap has keys for already deleted CachedResources. 
https://bugs.webkit.org/show_bug.cgi?id=106768
Summary m_initiatorMap has keys for already deleted CachedResources.
Ilya Tikhonovsky
Reported 2013-01-14 01:56:09 PST
I fixed instrumentation for CachedResourceLoader (added m_initiatorMap in reportMemoryUsage method) As a result I got a crash in inspector-protocol/nmi-webaudio-leak-test.html layout test. It happened because Native Memory profiler iterates through instrumented objects members and all container values. In the current case it iterates through the keys in m_initiatorMap and visits them. Looks like the lifetime of the map doesn't correlates with the lifetime of the CachedResources. Usually it crashes when profiler visits a document from a previous test. It happens almost always because DRT doesn't forces GC between tests. https://bugs.webkit.org/attachment.cgi?id=182522&action=review
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