On Wed, May 04, 2022 at 01:50:59PM +0200, Stefano Brivio wrote: > And that it's *obvious* that container_of() would trigger warnings > otherwise. Well, obvious just for me, it seems. :P Apparently it wasn't obvious to Kalle and me. My guess is that you saw the build error. Either that or Kalle and I are geezers who haven't looked at container_of() since before the BUILD_BUG_ON() was added five years ago. regards, dan carpenter