On Mon, 2017-08-28 at 14:35 -0700, Kees Cook wrote: > From: David Windsor <[email protected]> > > In support of usercopy hardening, this patch defines a region in the > thread_stack slab caches in which userspace copy operations are > allowed. > Since the entire thread_stack needs to be available to userspace, the > entire slab contents are whitelisted. Note that the slab-based thread > stack is only present on systems with THREAD_SIZE < PAGE_SIZE and > !CONFIG_VMAP_STACK. >
Acked-by: Rik van Riel <[email protected]> -- All rights reversed
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