Re: [PATCH 2/2] x86/cfi,bpf: Fix BPF JIT call

[Peter Zijlstra]

On Wed, Nov 22, 2023 at 01:41:34PM +0100, Peter Zijlstra wrote:
> +#ifdef CONFIG_FINEIBT
> +	/*
> +	 * When FineIBT, code in the __cfi_foo() symbols can get executed
> +	 * and hence unwinder needs help.
> +	 */
> +	if (cfi_mode != CFI_FINEIBT)
> +		return;
> +
> +	snprintf(fp->aux->ksym_prefix.name, KSYM_NAME_LEN,
> +		 "__cfi_%s", fp->aux->ksym.name);
> +
> +	prog->aux->ksym_prefix.start = (unsigned long) prog->bpf_func - 16;
> +	prog->aux->ksym_prefix.end   = (unsigned long) prog->bpf_func;
> +
> +	bpf_ksym_add(&fp->aux->ksym_prefix);
> +#endif
>  }

s/prog/fp/ makes compiler happier