[PATCH v4 0/3] Actually fix freelist pointer vs redzoning

[Kees Cook]

v4:
- remove redundant size check
v3: https://lore.kernel.org/lkml/20201015033712.1491731-1-keescook@xxxxxxxxxxxx
v2: https://lore.kernel.org/lkml/20201009195411.4018141-1-keescook@xxxxxxxxxxxx
v1: https://lore.kernel.org/lkml/20201008233443.3335464-1-keescook@xxxxxxxxxxxx

This fixes redzoning vs the freelist pointer (both for middle-position
and very small caches). Both are "theoretical" fixes, in that I see no
evidence of such small-sized caches actually be used in the kernel, but
that's no reason to let the bugs continue to exist, especially since
people doing local development keep tripping over it. :)

Thanks!

-Kees


Kees Cook (3):
  mm/slub: Clarify verification reporting
  mm/slub: Fix redzoning for small allocations
  mm/slub: Actually fix freelist pointer vs redzoning

 Documentation/vm/slub.rst | 10 +++++-----
 mm/slab_common.c          |  3 +--
 mm/slub.c                 | 36 +++++++++++++++---------------------
 3 files changed, 21 insertions(+), 28 deletions(-)

-- 
2.25.1