Re: [PATCH bpf-next v2 1/7] bpf: Implement bpf_probe_read_kernel_dynptr helper

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On Sat, Jan 25, 2025 at 12:30 AM Levi Zim via B4 Relay
<devnull+rsworktech.outlook.com@xxxxxxxxxx> wrote:
>
> From: Levi Zim <rsworktech@xxxxxxxxxxx>
>
> This patch add a helper function bpf_probe_read_kernel_dynptr:
>
> long bpf_probe_read_kernel_dynptr(const struct bpf_dynptr *dst,
>         u32 offset, u32 size, const void *unsafe_ptr, u64 flags);

We stopped adding helpers years ago.
Only new kfuncs are allowed.

This particular one doesn't look useful as-is.
The same logic can be expressed with
- create dynptr
- dynptr_slice
- copy_from_kernel

pw-bot: cr





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