commit 4e110ab20bb91e945a17c6e166e14e2da9608f08
author Fyodor Kupolov <fkupolov@google.com> Mon Feb 27 17:33:18 2017 -0800
committer gitbuildkicker <android-build@google.com> Wed Mar 22 15:01:38 2017 -0700
tree 956a77738388642931bda7a4ff6803390d619ccf
parent 542bba3f35775c48aca35e959a2eb213b2697c43

[DO NOT MERGE] Check bounds in offsetToPtr

Check whether specified offset belongs to mData.
Also added a default argument bufferSize to check the end offset.

Size of the ashmem descriptor can be modified between
ashmem_get_size_region call and mmap. createFromParcel method was updated
to check ashmem size again immediately after memory is mapped.

Test: manual - using the test app from the bug
Bug: 34128677
Change-Id: I3ecd1616a870ce20941ce9b20a1843d2b4295750
(cherry picked from commit 45e2e95c2ffeb2d978e2cce80b729ef6ada3b8d2)
(cherry picked from commit acede24109412a4c09e6e4e93d7b96bc9b1ad440)