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Re: [PATCH 0/9] mm: Hardened usercopy

From Andy Lutomirski <luto@amacapital.net>
Newsgroups linux.kernel
Subject Re: [PATCH 0/9] mm: Hardened usercopy
Date 2016-07-09 23:30 +0200
Message-ID <rT7YZ-8fP-3@gated-at.bofh.it> (permalink)
References <rS3up-6IW-9@gated-at.bofh.it>
Organization linux.* mail to news gateway

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On Jul 6, 2016 6:25 PM, "Kees Cook" <keescook@chromium.org> wrote:
>
> Hi,
>
> This is a start of the mainline port of PAX_USERCOPY[1]. After I started
> writing tests (now in lkdtm in -next) for Casey's earlier port[2], I
> kept tweaking things further and further until I ended up with a whole
> new patch series. To that end, I took Rik's feedback and made a number
> of other changes and clean-ups as well.
>

I like the series, but I have one minor nit to pick.  The effect of
this series is to harden usercopy, but most of the code is really
about infrastructure to validate that a pointed-to object is valid.
Might it make sense to call the infrastructure part something else?
After all, this could be extended in the future for memcpy or even for
some GCC plugin to check pointers passed to ordinary (non-allocator)
functions.

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Thread

[PATCH 0/9] mm: Hardened usercopy Kees Cook <keescook@chromium.org> - 2016-07-07 00:30 +0200
  [PATCH 6/9] powerpc/uaccess: Enable hardened usercopy Kees Cook <keescook@chromium.org> - 2016-07-07 00:30 +0200
  [PATCH 1/9] mm: Hardened usercopy Kees Cook <keescook@chromium.org> - 2016-07-07 00:30 +0200
    Re: [PATCH 1/9] mm: Hardened usercopy Baruch Siach <baruch@tkos.co.il> - 2016-07-07 07:40 +0200
      Re: [PATCH 1/9] mm: Hardened usercopy Kees Cook <keescook@chromium.org> - 2016-07-07 19:30 +0200
        Re: [PATCH 1/9] mm: Hardened usercopy Baruch Siach <baruch@tkos.co.il> - 2016-07-07 20:50 +0200
    Re: [PATCH 1/9] mm: Hardened usercopy Thomas Gleixner <tglx@linutronix.de> - 2016-07-07 09:50 +0200
      Re: [PATCH 1/9] mm: Hardened usercopy Kees Cook <keescook@chromium.org> - 2016-07-07 19:40 +0200
        Re: [PATCH 1/9] mm: Hardened usercopy Thomas Gleixner <tglx@linutronix.de> - 2016-07-07 21:40 +0200
    Re: [PATCH 1/9] mm: Hardened usercopy Arnd Bergmann <arnd@arndb.de> - 2016-07-07 10:10 +0200
      Re: [PATCH 1/9] mm: Hardened usercopy Kees Cook <keescook@chromium.org> - 2016-07-07 19:40 +0200
        Re: [PATCH 1/9] mm: Hardened usercopy Arnd Bergmann <arnd@arndb.de> - 2016-07-08 11:30 +0200
    Re: [PATCH 1/9] mm: Hardened usercopy Rik van Riel <riel@redhat.com> - 2016-07-07 18:30 +0200
    Re: [PATCH 1/9] mm: Hardened usercopy Rik van Riel <riel@redhat.com> - 2016-07-07 18:40 +0200
      Re: [PATCH 1/9] mm: Hardened usercopy Kees Cook <keescook@chromium.org> - 2016-07-07 19:50 +0200
  [PATCH 2/9] x86/uaccess: Enable hardened usercopy Kees Cook <keescook@chromium.org> - 2016-07-07 00:30 +0200
  [PATCH 7/9] sparc/uaccess: Enable hardened usercopy Kees Cook <keescook@chromium.org> - 2016-07-07 00:30 +0200
  Re: [PATCH 0/9] mm: Hardened usercopy Christian Borntraeger <borntraeger@de.ibm.com> - 2016-07-07 09:40 +0200
    Re: [PATCH 0/9] mm: Hardened usercopy Kees Cook <keescook@chromium.org> - 2016-07-07 19:30 +0200
  Re: [PATCH 0/9] mm: Hardened usercopy Ingo Molnar <mingo@kernel.org> - 2016-07-08 10:50 +0200
    Re: [PATCH 0/9] mm: Hardened usercopy Linus Torvalds <torvalds@linux-foundation.org> - 2016-07-08 18:20 +0200
      Re: [PATCH 0/9] mm: Hardened usercopy Ingo Molnar <mingo@kernel.org> - 2016-07-08 20:30 +0200
  Re: [PATCH 0/9] mm: Hardened usercopy Rik van Riel <riel@redhat.com> - 2016-07-09 04:50 +0200
    Re: [PATCH 0/9] mm: Hardened usercopy Ingo Molnar <mingo@kernel.org> - 2016-07-09 10:00 +0200
  Re: [PATCH 0/9] mm: Hardened usercopy Ard Biesheuvel <ard.biesheuvel@linaro.org> - 2016-07-09 10:30 +0200
    Re: [PATCH 0/9] mm: Hardened usercopy Kees Cook <keescook@chromium.org> - 2016-07-09 19:10 +0200
  Re: [PATCH 0/9] mm: Hardened usercopy Kees Cook <keescook@chromium.org> - 2016-07-09 19:10 +0200
  Re: [PATCH 0/9] mm: Hardened usercopy Andy Lutomirski <luto@amacapital.net> - 2016-07-09 23:30 +0200
    Re: [PATCH 0/9] mm: Hardened usercopy "PaX Team" <pageexec@freemail.hu> - 2016-07-10 01:20 +0200
      Re: [PATCH 0/9] mm: Hardened usercopy Ingo Molnar <mingo@kernel.org> - 2016-07-10 11:20 +0200
        Re: [PATCH 0/9] mm: Hardened usercopy "PaX Team" <pageexec@freemail.hu> - 2016-07-10 14:10 +0200
          Re: [PATCH 0/9] mm: Hardened usercopy Andy Lutomirski <luto@amacapital.net> - 2016-07-10 14:40 +0200
            Re: [PATCH 0/9] mm: Hardened usercopy Kees Cook <keescook@chromium.org> - 2016-07-11 20:50 +0200
          Re: [PATCH 0/9] mm: Hardened usercopy Kees Cook <keescook@chromium.org> - 2016-07-11 20:40 +0200

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