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Message-ID: <20171031020005.GC12341@eros>
Date: Tue, 31 Oct 2017 13:00:05 +1100
From: "Tobin C. Harding" <me@...in.cc>
To: Steven Rostedt <rostedt@...dmis.org>
Cc: kernel-hardening@...ts.openwall.com,
"Jason A. Donenfeld" <Jason@...c4.com>,
Theodore Ts'o <tytso@....edu>,
Linus Torvalds <torvalds@...ux-foundation.org>,
Kees Cook <keescook@...omium.org>,
Paolo Bonzini <pbonzini@...hat.com>,
Tycho Andersen <tycho@...ker.com>,
"Roberts, William C" <william.c.roberts@...el.com>,
Tejun Heo <tj@...nel.org>,
Jordan Glover <Golden_Miller83@...tonmail.ch>,
Greg KH <gregkh@...uxfoundation.org>,
Petr Mladek <pmladek@...e.com>, Joe Perches <joe@...ches.com>,
Ian Campbell <ijc@...lion.org.uk>,
Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
Catalin Marinas <catalin.marinas@....com>,
Will Deacon <wilal.deacon@....com>, Chris Fries <cfries@...gle.com>,
Dave Weinstein <olorin@...gle.com>,
Daniel Micay <danielmicay@...il.com>,
Djalal Harouni <tixxdz@...il.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH V8 2/2] printk: hash addresses printed with %p
On Mon, Oct 30, 2017 at 08:00:46PM -0400, Steven Rostedt wrote:
> On Tue, 31 Oct 2017 09:41:02 +1100
> "Tobin C. Harding" <me@...in.cc> wrote:
>
>
> > Cool. So I think we need
> >
> > get_random_bytes(&ptr_key, sizeof(ptr_key));
>
> You'll need to add a comment here to describe what ordering the memory
> barrier is used against. That is, somewhere else there's something that
> needs to see the "true" after the "get_random_bytes" update. Describe
> it here.
Got it, thanks Tobin.
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