On Fri, 31 Mar 2017, 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.
Ok this only affects kmem_cache_free() and not kfree(). For kmem_cache_free() we already have a lot of stuff in the hotpath due to cgruops. If you want this also for kfree() then we need a separate patch. Also for kmem_cache_free(): Here we always have a slab cache and thus we could check the flags that could modify what behavior we want. Acked-by: Christoph Lameter <c...@linux.com>