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SubjectRe: [PATCH] vsprintf: avoid misleading "(null)" for %px
On Mon, 5 Feb 2018 16:22:19 +0100
Adam Borowski <> wrote:

> My change touches %px only, where your concern doesn't apply.
> You're right, though, when it comes to %pK:
> printk("%%pK: %pK, %%px: %px\n", 0, 0);
> says
> %pK: 00000000ba8bdc0a, %px: 0000000000000000
> So what should we do? Avoid hashing 0? Print a special value?

My personal opinion is that NULL should stay NULL and not be hashed.
What security issue could be leaked by a NULL? I'm not a security
person, that's a real question.

-- Steve

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