On Wed, 9 Jul 2014, Andrey Ryabinin wrote: > With this patch kasan will be able to catch bugs in memory allocated > by slub. > Allocated slab page, this whole page marked as unaccessible > in corresponding shadow memory. > On allocation of slub object requested allocation size marked as > accessible, and the rest of the object (including slub's metadata) > marked as redzone (unaccessible). > > We also mark object as accessible if ksize was called for this object. > There is some places in kernel where ksize function is called to inquire > size of really allocated area. Such callers could validly access whole > allocated memory, so it should be marked as accessible by kasan_krealloc call. Do you really need to go through all of this? Add the hooks to kmem_cache_alloc_trace() instead and use the existing instrumentation that is there for other purposes? -- 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>