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From: "Adrian Ratiu" <adrian.ratiu@collabora.com>
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References: <20240524192858.3206-1-adrian.ratiu@collabora.com>
 <20240524192858.3206-2-adrian.ratiu@collabora.com> <9ce0c222-c80c-4049-8746-d74e612c3030@infradead.org>
Date: Mon, 27 May 2024 12:21:10 +0100
Cc: linux-fsdevel@vger.kernel.org, linux-security-module@vger.kernel.org, linux-kernel@vger.kernel.org, linux-hardening@vger.kernel.org, linux-doc@vger.kernel.org, kernel@collabora.com, gbiv@google.com, ryanbeltran@google.com, inglorion@google.com, ajordanr@google.com, jorgelo@chromium.org, "Guenter Roeck" <groeck@chromium.org>, "Doug Anderson" <dianders@chromium.org>, "Kees Cook" <keescook@chromium.org>, "Jann Horn" <jannh@google.com>, "Andrew Morton" <akpm@linux-foundation.org>, "Christian Brauner" <brauner@kernel.org>, "Mike Frysinger" <vapier@chromium.org>
To: "Randy Dunlap" <rdunlap@infradead.org>
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Subject: =?utf-8?q?Re=3A?= [PATCH v4 2/2] =?utf-8?q?proc=3A?= restrict /proc/pid/mem
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On Saturday, May 25, 2024 08:49 EEST, Randy Dunlap <rdunlap@infradead.o=
rg> wrote:

> Hi--
>=20
> On 5/24/24 12:28 PM, Adrian Ratiu wrote:
> > diff --git a/security/Kconfig b/security/Kconfig
> > index 412e76f1575d..0cd73f848b5a 100644
> > --- a/security/Kconfig
> > +++ b/security/Kconfig
> > @@ -183,6 +183,74 @@ config STATIC=5FUSERMODEHELPER=5FPATH
> >  	  If you wish for all usermode helper programs to be disabled,
> >  	  specify an empty string here (i.e. "").
> > =20
> > +menu "Procfs mem restriction options"
> > +
> > +config PROC=5FMEM=5FRESTRICT=5FFOLL=5FFORCE=5FDEFAULT
> > +	bool "Restrict all FOLL=5FFORCE flag usage"
> > +	default n
> > +	help
> > +	  Restrict all FOLL=5FFORCE usage during /proc/*/mem RW.
> > +	  Debuggerg like GDB require using FOLL=5FFORCE for basic
>=20
> 	  Debuggers

Hello and thank you for the feedback!

I'll fix these typos in a v5 together with the kernel test robot failur=
es.

I'll give v4 a bit more time in case other people have more feedback,
so I can address them all in one go.