Re: [PATCH v4] kptr_restrict for hiding kernel pointers

From: Ingo Molnar
Date: Wed Dec 22 2010 - 11:21:40 EST



* Eric Dumazet <eric.dumazet@xxxxxxxxx> wrote:

> Le mercredi 22 décembre 2010 à 08:13 -0500, Dan Rosenberg a écrit :
> > > Hm, why is it off by default? Is there some user-space regression that is caused by
> > > this?
> > >
> > > We really want good security measures to be active by default (and to work by
> > > default) - they are not worth much if they are not.
> > >
> >
> > I agree entirely, but I've received a lot of resistance to these types
> > of changes in net. I'm afraid that if it's enabled by default, no one
> > will actually allow use of the %pK specifier where it should be used.
> >
>
> Actually, "net resistance" was against your first patches, using quick
> and dirty techniques (Should I remind you some of them ?)
>
> Now you have a helper, it should be easier to integrate the changes.

Great - if the concept itself wasnt objected to then i think we should flip the
default to on.

Thanks,

Ingo
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