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Groups > linux.kernel > #1450973

Re: [PATCH] [RFC] Introduce mmap randomization

From Dave Hansen <dave.hansen@intel.com>
Newsgroups linux.kernel
Subject Re: [PATCH] [RFC] Introduce mmap randomization
Date 2016-07-27 02:00 +0200
Message-ID <rZkqt-bd-1@gated-at.bofh.it> (permalink)
References (2 earlier) <rZgPT-6zH-1@gated-at.bofh.it> <rZgZA-6D5-23@gated-at.bofh.it> <rZhLX-78t-15@gated-at.bofh.it> <rZhLX-78t-13@gated-at.bofh.it> <rZioF-7lp-15@gated-at.bofh.it>
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On 07/26/2016 02:44 PM, Jason Cooper wrote:
>> > I'd likely need to take a small sample of programs and examine them,
>> > especially considering That as gaps are harder to find, it forces the
>> > randomization down and randomization can Be directly altered with
>> > length on mmap(), versus randomize_addr() which didn't have this
>> > restriction but OOM'd do to fragmented easier.
> Right, after the Android feedback from Nick, I think you have a lot of
> work on your hands.  Not just in design, but also in developing convincing
> arguments derived from real use cases.

Why not just have the feature be disabled on 32-bit by default?  All of
the Android problems seemed to originate with having a constrained
32-bit address space.

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[PATCH] [RFC] Introduce mmap randomization william.c.roberts@intel.com - 2016-07-26 20:30 +0200
  [PATCH] [RFC] Introduce mmap randomization william.c.roberts@intel.com - 2016-07-26 20:30 +0200
    Re: [PATCH] [RFC] Introduce mmap randomization Jason Cooper <jason@lakedaemon.net> - 2016-07-26 22:10 +0200
      RE: [PATCH] [RFC] Introduce mmap randomization "Roberts, William C" <william.c.roberts@intel.com> - 2016-07-26 22:20 +0200
      RE: [PATCH] [RFC] Introduce mmap randomization "Roberts, William C" <william.c.roberts@intel.com> - 2016-07-26 22:20 +0200
        RE: [PATCH] [RFC] Introduce mmap randomization "Roberts, William C" <william.c.roberts@intel.com> - 2016-07-26 23:10 +0200
          Re: [PATCH] [RFC] Introduce mmap randomization Jason Cooper <jason@lakedaemon.net> - 2016-07-26 23:50 +0200
            Re: [PATCH] [RFC] Introduce mmap randomization Dave Hansen <dave.hansen@intel.com> - 2016-07-27 02:00 +0200
            RE: [PATCH] [RFC] Introduce mmap randomization "Roberts, William C" <william.c.roberts@intel.com> - 2016-08-02 19:30 +0200
              RE: [PATCH] [RFC] Introduce mmap randomization "Roberts, William C" <william.c.roberts@intel.com> - 2016-08-03 20:20 +0200
          RE: [PATCH] [RFC] Introduce mmap randomization "Roberts, William C" <william.c.roberts@intel.com> - 2016-08-02 19:40 +0200
        Re: [PATCH] [RFC] Introduce mmap randomization Jason Cooper <jason@lakedaemon.net> - 2016-07-26 23:10 +0200
          Re: [PATCH] [RFC] Introduce mmap randomization Nick Kralevich <nnk@google.com> - 2016-07-27 19:00 +0200
            Re: [PATCH] [RFC] Introduce mmap randomization Jason Cooper <jason@lakedaemon.net> - 2016-07-28 23:10 +0200
              Re: [kernel-hardening] Re: [PATCH] [RFC] Introduce mmap  randomization Daniel Micay <danielmicay@gmail.com> - 2016-07-29 12:20 +0200
                Re: [kernel-hardening] Re: [PATCH] [RFC] Introduce mmap randomization Jason Cooper <jason@lakedaemon.net> - 2016-08-01 00:30 +0200
                Re: [kernel-hardening] Re: [PATCH] [RFC] Introduce mmap  randomization Daniel Micay <danielmicay@gmail.com> - 2016-08-01 02:30 +0200
            RE: [PATCH] [RFC] Introduce mmap randomization "Roberts, William C" <william.c.roberts@intel.com> - 2016-08-02 19:00 +0200
              Re: [PATCH] [RFC] Introduce mmap randomization Nick Kralevich <nnk@google.com> - 2016-08-02 19:20 +0200
    Re: [kernel-hardening] [PATCH] [RFC] Introduce mmap randomization Rik van Riel <riel@redhat.com> - 2016-07-26 22:20 +0200
      RE: [kernel-hardening] [PATCH] [RFC] Introduce mmap randomization "Roberts, William C" <william.c.roberts@intel.com> - 2016-07-26 22:20 +0200
    Re: [PATCH] [RFC] Introduce mmap randomization Nick Kralevich <nnk@google.com> - 2016-07-26 22:50 +0200
      RE: [PATCH] [RFC] Introduce mmap randomization "Roberts, William C" <william.c.roberts@intel.com> - 2016-07-26 23:10 +0200
        Re: [PATCH] [RFC] Introduce mmap randomization Nick Kralevich <nnk@google.com> - 2016-07-26 23:20 +0200
  RE: [kernel-hardening] [PATCH] [RFC] Introduce mmap randomization "Roberts, William C" <william.c.roberts@intel.com> - 2016-08-04 19:00 +0200
    Re: [kernel-hardening] [PATCH] [RFC] Introduce mmap randomization Daniel Micay <danielmicay@gmail.com> - 2016-08-04 19:20 +0200
  Re: [kernel-hardening] [PATCH] [RFC] Introduce mmap randomization Daniel Micay <danielmicay@gmail.com> - 2016-08-04 19:10 +0200

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