Re: [PATCH 8/8] wusb: replace memset by memzero_explicit

[Greg Kroah-Hartman]

On Sun, Nov 30, 2014 at 05:59:34PM +0100, Julia Lawall wrote:
> From: Julia Lawall <julia@xxxxxxx>
> 
> Memset on a local variable may be removed when it is called just before the
> variable goes out of scope.  Using memzero_explicit defeats this
> optimization.  A simplified version of the semantic patch that makes this
> change is as follows: (http://coccinelle.lip6.fr/)
> 
> // <smpl>
> @@
> identifier x;
> type T;
> @@
> 
> {
> ... when any
> T x[...];
> ... when any
>     when exists
> - memset
> + memzero_explicit
>   (x,
> -0,
>   ...)
> ... when != x
>     when strict
> }
> // </smpl>
> 
> This change was suggested by Daniel Borkmann <dborkman@xxxxxxxxxx>
> 
> Signed-off-by: Julia Lawall <julia@xxxxxxx>
> 
> ---
> Daniel Borkmann suggested that these patches could go through Herbert Xu's
> cryptodev tree.

Why?  There's no dependancy on anything in the cryptodev tree,
memzero_explicit is in Linus's tree now.

thanks,

greg k-h
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/