tree 724b870f48b3ad22b2479a22e804379334d73a33
parent 0965c0247bff0ed97dc1c67d129d19fe4707c623
author Colin Cross <ccross@android.com> 1461715804 -0700
committer Colin Cross <ccross@android.com> 1461968046 -0700

Silently ignore duplicate heap entries

Vendor blobs on ryu mprotect heap pages, causing a single chunk mapping
to appear as multiple mappings.  The heap iterator has to expand the
requested range to cover the beginning of the chunk to find the chunk
metadata, which will lead to duplicate identical allocations being
reported from iterating over each of the split mappings.  Silently
ignore identical allocations, and only warn on non-identical allocations
that overlap.

Bug: 28269332
Change-Id: Ied2ab9270f65d00a887c7ce1a93fbf0617d69be0
(cherry picked from commit cecd64012db013331ff1071254ab543dcdf327bd)