• Linus Torvalds's avatar
    Merge branch 'core-stackprotector-for-linus' of... · ad3ab302
    Linus Torvalds authored
    Merge branch 'core-stackprotector-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
    Pull strong stackprotector support from Ingo Molnar:
     "This tree adds a CONFIG_CC_STACKPROTECTOR_STRONG=y, a new, stronger
      stack canary checking method supported by the newest GCC versions (4.9
      and later).
      Here's the 'intensity comparison' between the various protection
          - defconfig
            11430641 kernel text size
            36110 function bodies
            11468490 kernel text size (+0.33%)
            1015 of 36110 functions are stack-protected (2.81%)
          - defconfig + CONFIG_CC_STACKPROTECTOR_STRONG via this patch
            11692790 kernel text size (+2.24%)
            7401 of 36110 functions are stack-protected (20.5%)
      the strong model comes with non-trivial costs, which is why we
      preserved the 'regular' and 'none' models as well"
    * 'core-stackprotector-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
      stackprotector: Introduce CONFIG_CC_STACKPROTECTOR_STRONG
      stackprotector: Unify the HAVE_CC_STACKPROTECTOR logic between architectures
Makefile 48.8 KB