From: Andrew Morton <akpm@linux-foundation.org>
To: Kees Cook <keescook@chromium.org>
Cc: Ingo Molnar <mingo@kernel.org>,
Hector Marco Gisbert <hecmargi@upv.es>,
LKML <linux-kernel@vger.kernel.org>,
ismael Ripoll <iripoll@upv.es>, "x86@kernel.org" <x86@kernel.org>,
"linux-arm-kernel@lists.infradead.org"
<linux-arm-kernel@lists.infradead.org>,
Linux MIPS Mailing List <linux-mips@linux-mips.org>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] Fix offset2lib issue for x86*, ARM*, PowerPC and MIPS
Date: Thu, 26 Feb 2015 15:39:28 -0800 [thread overview]
Message-ID: <20150226153928.1df44df8a0d885fa71c471ce@linux-foundation.org> (raw)
In-Reply-To: <CAGXu5jJ8UM5J58CpBwP=+kHi9td0mKP0SV36HjpckEjxCzm45g@mail.gmail.com>
On Thu, 26 Feb 2015 15:34:36 -0800 Kees Cook <keescook@chromium.org> wrote:
> >> That pointless repetition should be avoided.
> >
> > That's surprisingly hard!
> >
> > After renaming mips brk_rnd() to mmap_rnd() I had a shot. I'm not very
> > confident in the result. Does that __weak trick even work?
>
> In theory, it shouldn't be needed since only randomize_et_dyn will
> call mmap_rnd, and only architectures that use randomize_et_dyn will
> call it ... and will define mmap_rnd.
But randomize_et_dyn() is compiled for all architectures. Or it was,
until I did the CONFIG_ARCH_HAVE_ELF_ASLR thing.
It seems odd that we have this per-arch feature but no Kconfig switch
for it.
next prev parent reply other threads:[~2015-02-26 23:39 UTC|newest]
Thread overview: 13+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-23 18:37 [PATCH] Fix offset2lib issue for x86*, ARM*, PowerPC and MIPS Hector Marco
2015-02-23 19:34 ` Kees Cook
2015-02-23 19:54 ` Hector Marco Gisbert
2015-02-24 7:39 ` Ingo Molnar
2015-02-26 22:38 ` Andrew Morton
2015-02-26 22:43 ` David Daney
2015-02-26 23:00 ` Russell King - ARM Linux
2015-02-26 23:05 ` Andrew Morton
2015-02-26 23:03 ` Andrew Morton
2015-02-26 23:26 ` Stephen Rothwell
2015-02-26 23:34 ` Kees Cook
2015-02-26 23:39 ` Andrew Morton [this message]
[not found] ` <20150227102136.17ef1fe6@canb.auug.org.au>
[not found] ` <20150226153435.df670671fb10eb9efa0fa845@linux-foundation.org>
[not found] ` <CAGXu5jK0YbyL+Z=YrCfkfGbYz6=65Rr_MAXLwrF36gJa2Ce4_w@mail.gmail.com>
[not found] ` <20150226160641.547657c397ecfee078779217@linux-foundation.org>
[not found] ` <CAGXu5j+3D7FrAJNLHTgEuK5wnOmUZG13xxi6eONuWiY2zKCMqQ@mail.gmail.com>
2015-02-27 0:20 ` Kees Cook
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