Re: [PATCH v4 02/14] aarch64: Enable internal use of memory protection keys

On 30/07/26 10:42, Yury Khrustalev wrote:
> * Florian
> 
> On Mon, Mar 17, 2025 at 09:24:10AM -0300, Adhemerval Zanella Netto wrote:
>>
>> On 02/02/25 18:12, Florian Weimer wrote:
>>> This adds hidden prototypes to align with commit 7e21a65c58cc91b3ba
>>> ("misc: Enable internal use of memory protection keys").
>>
>> LGTM, thanks.
>>
>> Reviewed-by: Adhemerval Zanella  <[email protected]>
> 
> What happened to this patch? It was approved but I don't think it was
> merged?
> 

I think because Florian has not reply to some points I have raised [1] in the
last revision rounds, nor I have finished reviewing this patchset as a whole.

I am not sure if Florian is planning to send a new version, and I still not
quite sure if the attack to internal glibc metadata [2][3] are really worth
adding the extra complexity and performance hit on some operations.

[1] https://sourceware.org/pipermail/libc-alpha/2025-March/165293.html
[2] https://github.com/nobodyisnobody/docs/blob/main/code.execution.on.last.libc/README.md
[3] https://m101.github.io/binholic/2017/05/20/notes-on-abusing-exit-handlers.html