[PATCH] powerpc/mm: don't log user reads to 0xffffffff

[Michael Ellerman]

On Mon, 2019-12-23 at 07:54:22 UTC, Christophe Leroy wrote:
> Running vdsotest leaves many times the following log:
> 
> [   79.629901] vdsotest[396]: User access of kernel address (ffffffff) - exploit attempt? (uid: 0)
> 
> A pointer set to (-1) is likely a programming error similar to
> a NULL pointer and is not worth logging as an exploit attempt.
> 
> Don't log user accesses to 0xffffffff.
> 
> Signed-off-by: Christophe Leroy <christophe.leroy at c-s.fr>

Applied to powerpc next, thanks.

https://git.kernel.org/powerpc/c/0f9aee0cb9da7db7d96f63cfa2dc5e4f1bffeb87

cheers