On Sun, Sep 20, 2020 at 08:10:31PM +0100, Al Viro wrote: > IMO it's much saner to mark those and refuse to touch them from io_uring... Simpler solution is to remove io_uring from the 32-bit syscall list. If you're a 32-bit process, you don't get to use io_uring. Would any real users actually care about that?