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authorLinus Torvalds <torvalds@linux-foundation.org>2023-08-29 13:04:15 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2023-08-29 13:04:15 -0700
commit651a00bc56403161351090a9d7ddbd7095975324 (patch)
tree921e3e06b419384d76b8ebd7c08b610dbe0d6b7b /fs/Kconfig
parent9d6b14cd1e993d2ff98df0cef6d935ce6fd4dbec (diff)
parent3d053e8060430b86bad0854b7c7f03f15be3a7e5 (diff)
Merge tag 'slab-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab
Pull slab updates from Vlastimil Babka: "This happens to be a small one (due to summer I guess), and all hardening related: - Randomized kmalloc caches, by GONG, Ruiqi. A new opt-in hardening feature to make heap spraying harder. It creates multiple (16) copies of kmalloc caches, reducing the chance of an attacker-controllable allocation site to land in the same slab as e.g. an allocation site with use-after-free vulnerability. The selection of the copy is derived from the allocation site address, including a per-boot random seed. - Stronger typing for hardened freelists in SLUB, by Jann Horn Introduces a custom type for hardened freelist entries instead of "void *" as those are not directly dereferencable. While reviewing this, I've noticed opportunities for further cleanups in that code and added those on top" * tag 'slab-for-6.6' of git://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab: Randomized slab caches for kmalloc() mm/slub: remove freelist_dereference() mm/slub: remove redundant kasan_reset_tag() from freelist_ptr calculations mm/slub: refactor freelist to use custom type
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