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Message-ID: <20160803184247.GR4541@io.lakedaemon.net>
Date: Wed, 3 Aug 2016 18:42:47 +0000
From: Jason Cooper <jason@...edaemon.net>
To: Michael Ellerman <mpe@...erman.id.au>
Cc: Kees Cook <keescook@...omium.org>,
"Roberts, William C" <william.c.roberts@...el.com>,
Yann Droneaud <ydroneaud@...eya.com>, Linux-MM <linux-mm@...ck.org>,
LKML <linux-kernel@...r.kernel.org>,
"kernel-hardening@...ts.openwall.com" <kernel-hardening@...ts.openwall.com>,
Russell King - ARM Linux <linux@....linux.org.uk>,
Andrew Morton <akpm@...ux-foundation.org>,
Theodore Ts'o <tytso@....edu>, Arnd Bergmann <arnd@...db.de>,
Greg KH <gregkh@...uxfoundation.org>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <will.deacon@....com>,
Ralf Baechle <ralf@...ux-mips.org>,
"benh@...nel.crashing.org" <benh@...nel.crashing.org>,
Paul Mackerras <paulus@...ba.org>,
"David S. Miller" <davem@...emloft.net>,
Thomas Gleixner <tglx@...utronix.de>,
Ingo Molnar <mingo@...hat.com>, "H. Peter Anvin" <hpa@...or.com>,
"x86@...nel.org" <x86@...nel.org>,
Al Viro <viro@...iv.linux.org.uk>, Nick Kralevich <nnk@...gle.com>,
Jeffrey Vander Stoep <jeffv@...gle.com>,
Daniel Cashman <dcashman@...roid.com>
Subject: Re: Re: [PATCH v2 1/7] random: Simplify API for
random address requests
On Tue, Aug 02, 2016 at 01:35:13PM +1000, Michael Ellerman wrote:
> Jason Cooper <jason@...edaemon.net> writes:
> > On Mon, Aug 01, 2016 at 12:47:59PM -0700, Kees Cook wrote:
> >> On Sun, Jul 31, 2016 at 1:56 PM, Jason Cooper <jason@...edaemon.net> wrote:
> >>
> >> I have no new call sites in mind, but it seems safe to add a BUG_ON to
> >> verify we don't gain callers that don't follow the correct
> >> expectations. (Or maybe WARN and return start.)
> >
> > No, I think BUG_ON is appropriate. afaict, the only time this will be
> > encountered is during the development process.
>
> Unless it's not.
>
> Why crash someone's system when you could just page align the value
> you're given?
Ack, v3 on it's way.
thx,
Jason.
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