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SubjectRe: [PATCH 3/3] lib/vsprintf: Hash printed address for netdev bits fallback
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 <>

Great catch!

Reviewed-by: Petr Mladek <>

Best Regards,

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