tree c1427b757542e1e092433b0cdcfd1486b5191d65
parent 08fe19137713189f5b620050c3ac9d3ac952a4c4
author Santhosh Behara <santhoshbehara@codeaurora.org> 1526389790 -0700
committer android-build-team Robot <android-build-team-robot@google.com> 1532717068 +0000

mm-video-v4l2: Protect buffer access and increase input buffer size

Protect buffer access for below scenarios:

*Increase the scope of buf_lock in free_buffer to avoid access
 of freed buffer for both input and output buffers. Also, add check
 before output buffer access.

*Disallow allocate buffer mode after client has called use buffer.

Allocate additional 512 bytes of memory for input buffers on top of
allocation size as per hardware requirement.

Bug: 64340487
Test: ran POC on bullhead/nyc-dev
Change-Id: Iabbb2d7e00ff97bfc47b04386feec66976fca99a
(cherry picked from commit 83aeab22d1bdc493b3ea2f50616bb8fd460d6c74)