Re: [PATCH bpf-next v3 3/6] bpf: fix the usage of BPF_TRAMP_F_SKIP_FRAME

[Andreas Schwab]

On Dez 19 2025, Menglong Dong wrote:

> @@ -1171,6 +1167,8 @@ static int __arch_prepare_bpf_trampoline(struct
> bpf_tramp_image *im,
>         }
>
>         if (flags & BPF_TRAMP_F_CALL_ORIG) {
> +               /* skip to actual body of traced function */
> +               orig_call += RV_FENTRY_NINSNS * 4;

Before this line, orig_call still contains the same value as func_addr,
with the latter being dead, so there is not much point in using a copy.

-- 
Andreas Schwab, schwab@xxxxxxxxxxxxxx
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