Comment 1 for bug 369152

It seems that this support is currently not enablable. It is currently marked as broken:

    config CC_STACKPROTECTOR
        bool "Enable -fstack-protector buffer overflow detection (EXPERIMENTAL)"
        depends on X86_64 && EXPERIMENTAL
        depends on X86_64 && EXPERIMENTAL && BROKEN

This was done under the following commit, so it doesn't appear we will be able to enable it currently.

  commit 2c020a99e058cdfc3a073cbfbfcc6ff55d3bfc43
  Author: Linus Torvalds <email address hidden>
  Date: Fri Feb 22 08:21:38 2008 -0800

    Mark CC_STACKPROTECTOR as being BROKEN

    It's always been broken, but recent fixes actually made it do something,
    and now the brokenness shows up as the resulting kernel simply not
    working at all.

    So it used to be that you could enable this config option, and it just
    didn't do anything. Now we'd better stop people from enabling it by
    mistake, since it _does_ do something, but does it so badly as to be
    unusable.

    Code to actually make it work is pending, but incomplete and won't be
    merged into 2.6.25 in any case.