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 from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
