Re: [PATCH] x86: Set clear flag in copy_from_user/copy_to_user

[Linus Torvalds]

On Mon, 28 Jul 2008, Vitaly Mayatskikh wrote:
>
> Only copy_to_user should clear the rest of uncopied area.

Copy *from* user should clear the kernel result buffer tail. Copying *to* 
user should do no such thing, and cannot do it anyway, since if we get a 
fault, it's going to be in that tail that caused a fault to begin with.

		Linus
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