NativeCodeTest: Test for vroot exploit

ANDROID-11234878

Verify that writes are restricted to our own address space.

Bug: 11234878

(cherry picked from commit f53e0509f0b91ffdfd66b1ac19012dd8e4edbbd4)

Change-Id: I987f3dca6097de88be5f0139f21e50b1eecc885c
2 files changed