On Tue, Nov 15, 2016 at 09:27:47AM -0800, Kees Cook wrote:
> On Mon, Nov 14, 2016 at 11:02 PM, Michael Ellerman
> wrote:
> > At least on powerpc with GCC 6, the compiler is smart enough to optimise
> > lkdtm_CORRUPT_STACK() into an empty function that just returns.
>
> Sneaky. Thanks!
>
> > If
On Mon, Nov 14, 2016 at 11:02 PM, Michael Ellerman wrote:
> At least on powerpc with GCC 6, the compiler is smart enough to optimise
> lkdtm_CORRUPT_STACK() into an empty function that just returns.
Sneaky. Thanks!
> If we print the buffer after we've written to it that prevents the
> compiler f
At least on powerpc with GCC 6, the compiler is smart enough to optimise
lkdtm_CORRUPT_STACK() into an empty function that just returns.
If we print the buffer after we've written to it that prevents the
compiler from optimising away data and the memset().
Signed-off-by: Michael Ellerman
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dr
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