Re: [PATCH] vsprintf: Do not break early boot with probing addresses

On Tue, May 14, 2019 at 10:29 AM David Laight [off-list ref] wrote:

quoted

And I like Steven's "(fault)" idea.
How about this:

      if ptr < PAGE_SIZE              -> "(null)"
      if IS_ERR_VALUE(ptr)            -> "(fault)"

      -ss

Or:
        if (ptr < PAGE_SIZE)
                return ptr ? "(null+)" : "(null)";
        if IS_ERR_VALUE(ptr)
                return "(errno)"

Do we care about the value? "(-E%u)"?

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds