Re: [PATCH 3/3] lib/vsprintf: Hash printed address for netdev bits fallback

[Petr Mladek]

On Mon 2018-10-08 13:05:04, Geert Uytterhoeven wrote:
> The handler for "%pN" falls back to printing the raw pointer value when
> using a different format than the (sole supported) special format
> "%pNF", potentially leaking sensitive information regarding the kernel
> layout in memory.
> 
> Avoid this leak by printing the hashed address instead.
> Note that there are no in-tree users of the fallback.
> 
> Fixes: ad67b74d2469d9b8 ("printk: hash addresses printed with %p")
> Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>

Great catch!

Reviewed-by: Petr Mladek <pmladek@xxxxxxxx>

Best Regards,
Petr