Re: [PATCH 1/1 module-next] kallsyms: enhance %pS/s/b printing when KALLSYSMS is disabled

[Sergey Senozhatsky]

On (22/03/16 10:05), Maninder Singh wrote:
[..]
> +static int sprint_module_info(char *buf, unsigned long value,
> +			     int modbuildid, int backtrace, int symbol)
> +{
> +	struct module *mod;
> +	unsigned long offset;
> +	void *base;
> +	char *modname;
> +	int len;
> +	const unsigned char *buildid = NULL;
> +	bool add_offset;
> +
> +	if (is_ksym_addr(value))
> +		return 0;
> +
> +	if (backtrace || symbol)
> +		add_offset = true;
> +	else
> +		add_offset = false;
> +
> +	preempt_disable();
> +	mod = __module_address(value);
> +	if (mod) {
> +		modname = mod->name;
> +#if IS_ENABLED(CONFIG_STACKTRACE_BUILD_ID)
> +		if (modbuildid)
> +			buildid = mod->build_id;
> +#endif
> +		if (add_offset) {
> +			base = mod->core_layout.base;
> +			offset = value - (unsigned long)base;
> +		}

What if address is in module init? Shouldn't this be something like

	if (within_module_init(value, mod))
		offset = value - (unsigned long)mod->init_layout.base;
	else
		offset = value - (unsigned long)mod->core_layout.base;