[PATCH 0/2] mm: Expand CONFIG_SLAB_FREELIST_HARDENED to include SLAB and SLOB

[Kees Cook]

Hi,

In reviewing Vlastimil Babka's latest slub debug series, I realized[1]
that several checks under CONFIG_SLAB_FREELIST_HARDENED weren't being
applied to SLAB (or SLOB). Fix this by expanding the Kconfig coverage and
moving the cache_from_obj() check back into the common code. Additionally
adds a simple double-free test for SLAB.

Thanks!

-Kees

[1] 202006171039.FBDF2D7F4A@keescook/">https://lore.kernel.org/lkml/202006171039.FBDF2D7F4A@keescook/

Kees Cook (2):
  mm: Expand CONFIG_SLAB_FREELIST_HARDENED to include SLAB and SLOB
  slab: Add naive detection of double free

 init/Kconfig |  8 ++++----
 mm/slab.c    | 22 ++++++++++++----------
 mm/slab.h    | 31 +++++++++++++++++++++++++++++++
 mm/slub.c    | 25 +------------------------
 4 files changed, 48 insertions(+), 38 deletions(-)

-- 
2.25.1