On Fri 31-03-17 09:40:28, Kees Cook wrote: > As found in PaX, this adds a cheap check on heap consistency, just to > notice if things have gotten corrupted in the page lookup. > > Signed-off-by: Kees Cook <keescook@xxxxxxxxxxxx> NAK without a proper changelog. Seriously, we do not blindly apply changes from other projects without a deep understanding of all consequences. > --- > mm/slab.h | 1 + > 1 file changed, 1 insertion(+) > > diff --git a/mm/slab.h b/mm/slab.h > index 65e7c3fcac72..64447640b70c 100644 > --- a/mm/slab.h > +++ b/mm/slab.h > @@ -384,6 +384,7 @@ static inline struct kmem_cache *cache_from_obj(struct kmem_cache *s, void *x) > return s; > > page = virt_to_head_page(x); > + BUG_ON(!PageSlab(page)); > cachep = page->slab_cache; > if (slab_equal_or_root(cachep, s)) > return cachep; > -- > 2.7.4 > > > -- > Kees Cook > Pixel Security > > -- > To unsubscribe, send a message with 'unsubscribe linux-mm' in > the body to majordomo@xxxxxxxxx. For more info on Linux MM, > see: http://www.linux-mm.org/ . > Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a> -- Michal Hocko SUSE Labs -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>
