Re: [PATCH] fsverity: Fix bpf_get_fsverity_digest() dynptr assumptions

[Kumar Kartikeya Dwivedi]

On Sat Aug 1, 2026 at 7:35 PM CEST, Kumar Kartikeya Dwivedi wrote:
> On Sat Aug 1, 2026 at 7:15 PM CEST, Eric Biggers wrote:
>> On Sat, Aug 01, 2026 at 06:52:45PM +0200, Kumar Kartikeya Dwivedi wrote:
>>> > Also correctly handle sizes over INT_MAX, which previously caused an
>>> > integer overflow and crash.  __bpf_dynptr_size() returns a u64.
>>> >
>>>
>>> I guess this occurs when using file dynptrs? Otherwise the size is capped to
>>> DYNPTR_SIZE_MASK.
>>
>> Yes, though it looks like __bpf_dynptr_data_rw() excludes file dynptrs.
>> So this particular issue might be unreachable.  Still seems like a good
>> idea to match the u64 type that __bpf_dynptr_size() returns though.
>>
>
> I don't see this in patchwork, so you might have to resend this with [PATCH
> bpf-next] subject again to trigger CI if you want this to go through bpf tree.
>

Sorry, [PATCH bpf], rather.

>> - Eric