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SubjectRe: [PATCH 18/27] bpf: Restrict kernel image access functions when the kernel is locked down
On Fri, Oct 20, 2017 at 05:03:22PM +0100, David Howells wrote:
> jlee@suse.com wrote:
>
> > I think that we don't need to lock down sys_bpf() now because
> > we didn't lock down other interfaces for reading arbitrary
> > address like /dev/mem and /dev/kmem.
>
> Ummm... See patch 4. You even gave me a Reviewed-by for it ;-)
>
> David

hm... patch 4 only prevents write_mem() but not read_mem().
Or I missed anything?

Thanks
Joey Lee

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