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Message-ID: <87y3ng1djj.fsf@concordia.ellerman.id.au>
Date: Thu, 09 Nov 2017 11:49:52 +1100
From: Michael Ellerman <mpe@...erman.id.au>
To: "Tobin C. Harding" <me@...in.cc>
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>, Steven Rostedt <rostedt@...dmis.org>, 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, Network Development <netdev@...r.kernel.org>, David Miller <davem@...emloft.net>
Subject: Re: [PATCH v4] scripts: add leaking_addresses.pl
"Tobin C. Harding" <me@...in.cc> writes:
> On Wed, Nov 08, 2017 at 11:10:56PM +1100, Michael Ellerman wrote:
>> "Tobin C. Harding" <me@...in.cc> writes:
> [snip]
>
> Hi Michael,
>
> I'm working an adding support for ppc64 to leaking_addresses.pl, I've
> added the kernel address regular expression that you suggested.
Thanks!
> I'd like to add the false positive for vsyscall addresses. Excuse my
> ignorance but does PowerPC use a constant address range for vsyscall like x86_64
> does? The ppc64 machine I have access to does not output anything for
>
> $ cat /proc/PID/tasks/PID/smaps or
> $ cat /proc/PID/tasks/PID/maps
No we only have the vdso style vsyscall, which is mapped at user
addresses and is subject to ASLR, so you shouldn't need to worry about
it.
cheers
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