On Fri, Nov 07, 2014 at 10:11:14PM +0000, Al Viro wrote: > I'm looking through the tree right now; so far it looks like we can just > move those suckers to the point where we validate iovec and lose them > from low-level iovec and csum copying completely. I still haven't finished > tracing all possible paths for address to arrive at the points where we > currently check that stuff, but so far it looks very doable.
BTW, csum side of that is also chock-full of duplicate access_ok() - e.g. generic csum_and_copy_from_user() checks before calling csum_partial_copy_from_user(). And generic instance of that is using __copy_from_user(), all right, but a _lot_ of non-default instances repeat that access_ok(). -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
