commit d4852d10bb8a91fd513c0337bbfd71921decf0c2
author Jeff Vander Stoep <jeffv@google.com> Fri May 20 22:38:46 2016 -0700
committer Thierry Strudel <tstrudel@google.com> Thu May 26 06:52:14 2016 +0000
tree 720f85f402238d2a30fcf483fd1e4d23c94bdbe4
parent c45d1ce55488ca00d4061e976a92aa6c5f63edd5

enable fstack-protector-strong

Enable protection against stack corruption. (most) Functions with the
possibility of stack corruption  are protected with a canary.

With this change, the angler kernel grows from 11072067 to 11279319
an increase of 1.9%. Performance loss is considered minimal. Security
against stack overflow is greatly improved. [1]

This is the improved version of CONFIG_CC_STACKPROTECTOR=y which is
enabled in shamu's kernel.

[1] https://lwn.net/Articles/584225

Bug: 28837708
Change-Id: Ifad485a543768be5722e937069983c10fcb80ee9