tree 1a69eacfb08221ff86dbaa64699300db5710b2a8
parent c79a98551f7271c9c592a24a692d9d05169aa743
author Praveen Chavan <pchavan@codeaurora.org> 1461603822 -0700
committer The Android Automerger <android-build@google.com> 1464822621 -0700

DO NOT MERGE mm-video-v4l2: vdec: Avoid processing ETBs/FTBs in invalid states

(per the spec) ETB/FTB should not be handled in states other than
Executing, Paused and Idle. This avoids accessing invalid buffers.
Also add a lock to protect the private-buffers from being deleted
while accessing from another thread.

Bug: 27890802
Security Vulnerability - Heap Use-After-Free and Possible LPE in
MediaServer (libOmxVdec problem #6)

CRs-Fixed: 1008882

Change-Id: Iaac2e383cd53cf9cf8042c9ed93ddc76dba3907e
(cherry picked from commit 4c6c7e80a1ce0366b916f41a2f18fe36d87ed8ed)