Re: [PATCH v2 00/39] x86: Kernel IBT

[Peter Zijlstra]

On Fri, Feb 25, 2022 at 04:28:32PM +0100, Peter Zijlstra wrote:
> +void *skip_endbr(void *addr)
> +{
> +	unsigned long size, offset;
> +
> +	if (is_endbr(*(unsigned int *)addr) &&
> +	    kallsyms_lookup_size_offset((unsigned long)addr, &size, &offset) &&
> +	    !offset)
> +		addr += 4;
> +
> +	return addr;
> +}

Damn, I just realized this makes KERNEL_IBT hard depend on KALLSYMS :-(