Re: [PATCH v2] mm/slub: refactor freelist to use custom type

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On 7/4/23 15:58, Matteo Rizzo wrote:
> From: Jann Horn <jannh@xxxxxxxxxx>
> 
> Currently the SLUB code represents encoded freelist entries as "void*".
> That's misleading, those things are encoded under
> CONFIG_SLAB_FREELIST_HARDENED so that they're not actually dereferencable.
> 
> Give them their own type, and split freelist_ptr() into one function per
> direction (one for encoding, one for decoding).
> 
> Signed-off-by: Jann Horn <jannh@xxxxxxxxxx>
> Co-developed-by: Matteo Rizzo <matteorizzo@xxxxxxxxxx>
> Signed-off-by: Matteo Rizzo <matteorizzo@xxxxxxxxxx>

Thanks, merged:

https://git.kernel.org/pub/scm/linux/kernel/git/vbabka/slab.git/log/?h=slab/for-6.6/cleanup

While reviewing this I think more cleanups are possible but I will post them
on top as it's better for bisection purposes than folding anyway, and should
involve kasan folks.





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