Re: [PATCH v6 3/6] mm/memfd: add MFD_NOEXEC_SEAL and MFD_EXEC

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On 12/16/22 16:40, Jeff Xu wrote:
On Fri, Dec 16, 2022 at 2:06 PM Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:

On Fri, 16 Dec 2022 13:46:58 -0800 Jeff Xu <jeffxu@xxxxxxxxxx> wrote:

On Fri, Dec 16, 2022 at 12:35 PM Kees Cook <keescook@xxxxxxxxxxxx> wrote:

On Fri, Dec 16, 2022 at 10:11:44AM -0800, Jeff Xu wrote:
Once per boot seems too little, it would be nice if we can list all processes.
I agree ratelimited might be too much.
There is a feature gap here for logging.

Kees, what do you think ?

I agree once per boot is kind of frustrating "I fixed the one warning,
oh, now it's coming from a different process". But ratelimit is, in
retrospect, still too often.

Let's go with per boot -- this should be noisy "enough" to get the
changes in API into the callers without being too much of a hassle.

Agreed.  Let's go with per boot.

Hi Andrew, what is your preference ? I can send a patch  or you
directly fix it in mm-unstable ?

Like this?

Yes. Thanks!


Sorry jumping into this discussion a bit late. Is it possible to provide
a way to enable full logging as a debug option to tag more processes?

thanks,
-- Shuah





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