tree f4ee6acca2b0f8173588bf1c41a04b84e090c6c5
parent 721c9ce4a55c13716f263dc7a9cbda92b349b4b7
author Colin Cross <ccross@android.com> 1461714692 -0700
committer Colin Cross <ccross@android.com> 1461885640 -0700

Handle segfaults while walking native heap

Vendor blobs on ryu mprotect heap pages, causing segfaults when dumping
unreachable memory.  Handle segfaults within HeapWalker by mapping a
zero page over any unreadable pages.  HeapWalker runs in the forked
process, so the mapping will not affect the original process.

Bug: 28269332
Change-Id: I16245af722123f2ad467cbc6f245a70666c55544