On Thu 2018-10-11 10:42:48, Geert Uytterhoeven wrote:
> On platforms using the Common Clock Framework, "%pC" prints the clock's
> name. On legacy platforms, it prints the unhashed clock's address,
> potentially leaking sensitive information regarding the kernel layout in
> memory.
>
> Avoid this leak by printing the hashed address instead. To distinguish
> between clocks, a 32-bit unique identifier is as good as an actual
> pointer value.
>
> Fixes: ad67b74d2469d9b8 ("printk: hash addresses printed with %p")
> Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
> Reviewed-by: Petr Mladek <pmladek@xxxxxxxx>
I have pushed this patch into printk.git,
branch for-4.20-vsprintf-hash-fixes.
Best Regards,
Petr
