[PATCH 3/5] mm: export zap_page_range_single and list_lru_add/del

David Hildenbrand (arm) david at kernel.org
Thu Feb 5 12:13:57 UTC 2026


On 2/5/26 13:10, Lorenzo Stoakes wrote:
> On Thu, Feb 05, 2026 at 11:58:00AM +0000, Alice Ryhl wrote:
>> On Thu, Feb 05, 2026 at 12:43:03PM +0100, David Hildenbrand (arm) wrote:
>>>
>>> I don't expect anybody to set zap_details, but yeah, it could be abused.
>>> It could be abused right now from anywhere else in the kernel
>>> where we don't build as a module :)
>>>
>>> Apparently we export a similar function in rust where we just removed the last parameter.
>>
>> To clarify, said Rust function gets inlined into Rust Binder, so Rust
>> Binder calls the zap_page_range_single() symbol directly.
> 
> Presumably only for things compiled into the kernel right?

Could Rust just use zap_vma_ptes() or does it want to zap things in VMAs 
that are not VM_PFNMAP?

-- 
Cheers,

David



More information about the Linux-security-module-archive mailing list