[STABLE REQ] mm/vmalloc.c: huge-vmap: fail gracefully on unexpected huge vmap mappings

[Greg KH]

On Tue, Jun 27, 2017 at 02:36:46PM +0000, Ard Biesheuvel wrote:
> Please consider
> 
> 029c54b09599 mm/vmalloc.c: huge-vmap: fail gracefully on unexpected
> huge vmap mappings
> 
> for inclusion into the v4.9 and v4.11 stable trees. It prevents
> crashes on arm64 that may occur after commit 324420bf91f6 ("arm64: add
> support for ioremap() block mappings") was merged for v4.6.

Does not apply to the 4.9-stable tree, can you provide a backport for it
there?

thanks,

greg k-h