Re: [PATCH v5 08/11] vsprintf: Factor out %pO handler as kobject_string()

From: Andy Shevchenko
Date: Wed Apr 25 2018 - 11:01:32 EST

On Wed, 2018-04-25 at 13:12 +0200, Petr Mladek wrote:
> Move code from the long pointer() function. We are going to add a
> check for
> the access to the address that will make it even more complicated.
> Also it is better to warn about unknown specifier instead of falling
> back to the %p behavior. It will help people to understand what is
> going wrong. They expect some device node names and not a pointer
> in this situation.
> In fact, this avoids leaking the address when invalid %pO format
> specifier is used. The old code fallen back to printing the
> non-hashed value.

> +static char *kobject_string(char *buf, char *end, void *ptr,
> + struct printf_spec spec, const char *fmt)

Do we need noinline_for_stack annotation? (Same question applies to
patch 7)

Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Intel Finland Oy