Re: [PATCH v18 0/9] mm: introduce memfd_secret system call to create "secret" memory areas

On Thu, 2021-05-06 at 10:33 -0700, Kees Cook wrote: > On Thu, May 06, 2021 at 08:26:41AM -0700, James Bottomley wrote: > What's happening with O_CLOEXEC in this code? I don't see that > mentioned in the cover letter either. Why is it disallowed? That > seems a strange limitation for something trying to avoid leaking > secrets into other processes. I actually thought we forced it, so I'll let Mike address this. I think allowing it is great, so the secret memory isn't inherited by children, but I can see use cases where a process would want its child to inherit the secrets.