Re: [PATCH v2 1/1] mm/madvise: replace ptrace attach requirement for process_madvise

From: Suren Baghdasaryan
Date: Wed Jan 20 2021 - 11:51:28 EST


On Tue, Jan 19, 2021 at 9:02 PM James Morris <jmorris@xxxxxxxxx> wrote:
>
> On Mon, 11 Jan 2021, Suren Baghdasaryan wrote:
>
> > Replace PTRACE_MODE_ATTACH with a combination of PTRACE_MODE_READ
> > and CAP_SYS_NICE. PTRACE_MODE_READ to prevent leaking ASLR metadata
> > and CAP_SYS_NICE for influencing process performance.
>
>
> Almost missed these -- please cc the LSM mailing list when modifying
> capabilities or other LSM-related things.

Thanks for the note. Will definitely include it when sending the next version.

>
> --
> James Morris
> <jmorris@xxxxxxxxx>
>
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