Subject: [PATCH v3 00/11] mm: Hardened usercopy

From: [email-masked] (Rik van Riel)
Date: Wed, 20 Jul 2016 12:22:07 -0400

On Wed, 2016-07-20 at 16:02 +0000, David Laight wrote:
> From: Kees Cook
> > Sent: 20 July 2016 16:32
> ...
> > Yup: that's exactly what it's doing: walking up the stack. :)
> 
> Remind me to make sure all our customers run kernels with it
> disabled.

You want a single copy_from_user to write to data in
multiple stack frames?

-- 

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