From: Ingo Molnar <mingo@kernel.org>
To: Andy Lutomirski <luto@amacapital.net>
Cc: Dave Hansen <dave@sr71.net>, X86 ML <x86@kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
Linus Torvalds <torvalds@linux-foundation.org>,
Andrew Morton <akpm@linux-foundation.org>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Andy Lutomirski <luto@kernel.org>, Borislav Petkov <bp@alien8.de>,
Kees Cook <keescook@google.com>
Subject: Re: [PATCH 26/26] x86, pkeys: Documentation
Date: Fri, 25 Sep 2015 09:16:45 +0200 [thread overview]
Message-ID: <20150925071645.GA17385@gmail.com> (raw)
In-Reply-To: <CALCETrVd+wgGvRcKhz6wHYqYi+9=MSddqxOkWucW=DT9kQ=8Jg@mail.gmail.com>
* Andy Lutomirski <luto@amacapital.net> wrote:
> This may mean that we want to have a way for binaries to indicate that they want
> their --x segments to be loaded with a particular protection key. The right way
> to do that might be using an ELF note, and I also want to use ELF notes to allow
> turning off vsyscalls, so maybe it's time to write an ELF note parser in the
> kernel.
That would be absolutely lovely for many other reasons as well, and we should also
add a tool to tools/ to edit/expand/shrink those ELF notes on existing systems.
I.e. make it really easy to augment security policies on an existing distro, using
any filesystem (not just ACL capable ones) and using the binary only. Linux
binaries could carry capabilities information, etc. etc.
Thanks,
Ingo
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next prev parent reply other threads:[~2015-09-25 7:16 UTC|newest]
Thread overview: 86+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-16 17:49 [PATCH 00/26] [RFCv2] x86: Memory Protection Keys Dave Hansen
2015-09-16 17:49 ` [PATCH 03/26] x86, pkeys: cpuid bit definition Dave Hansen
2015-09-16 17:49 ` [PATCH 01/26] x86, fpu: add placeholder for Processor Trace XSAVE state Dave Hansen
2015-09-16 17:49 ` [PATCH 04/26] x86, pku: define new CR4 bit Dave Hansen
2015-09-16 17:49 ` [PATCH 02/26] x86, pkeys: Add Kconfig option Dave Hansen
2015-09-16 17:49 ` [PATCH 07/26] x86, pkeys: new page fault error code bit: PF_PK Dave Hansen
2015-09-16 17:49 ` [PATCH 05/26] x86, pkey: add PKRU xsave fields and data structure(s) Dave Hansen
2015-09-22 19:53 ` Thomas Gleixner
2015-09-22 19:58 ` Dave Hansen
2015-09-16 17:49 ` [PATCH 06/26] x86, pkeys: PTE bits for storing protection key Dave Hansen
2015-09-16 17:49 ` [PATCH 09/26] x86, pkeys: arch-specific protection bits Dave Hansen
2015-09-16 17:49 ` [PATCH 08/26] x86, pkeys: store protection in high VMA flags Dave Hansen
2015-09-16 17:49 ` [PATCH 10/26] x86, pkeys: notify userspace about protection key faults Dave Hansen
2015-09-22 20:03 ` Thomas Gleixner
2015-09-22 20:21 ` Dave Hansen
2015-09-22 20:27 ` Thomas Gleixner
2015-09-22 20:29 ` Dave Hansen
2015-09-23 8:05 ` Ingo Molnar
2015-09-24 9:23 ` Ingo Molnar
2015-09-24 9:30 ` Ingo Molnar
2015-09-24 17:41 ` Dave Hansen
2015-09-25 7:11 ` Ingo Molnar
2015-09-25 23:18 ` Dave Hansen
2015-09-26 6:20 ` Ingo Molnar
2015-09-27 22:39 ` Dave Hansen
2015-09-28 5:59 ` Ingo Molnar
2015-09-24 17:15 ` Dave Hansen
2015-09-28 19:25 ` Christian Borntraeger
2015-09-28 19:32 ` Dave Hansen
2015-09-16 17:49 ` [PATCH 11/26] x86, pkeys: add functions for set/fetch PKRU Dave Hansen
2015-09-22 20:05 ` Thomas Gleixner
2015-09-22 20:22 ` Dave Hansen
2015-09-16 17:49 ` [PATCH 13/26] mm: simplify get_user_pages() PTE bit handling Dave Hansen
2015-09-16 17:49 ` [PATCH 12/26] mm: factor out VMA fault permission checking Dave Hansen
2015-09-16 17:49 ` [PATCH 14/26] x86, pkeys: check VMAs and PTEs for protection keys Dave Hansen
2015-09-16 17:49 ` [PATCH 15/26] x86, pkeys: optimize fault handling in access_error() Dave Hansen
2015-09-16 17:49 ` [PATCH 17/26] x86, pkeys: dump PTE pkey in /proc/pid/smaps Dave Hansen
2015-09-16 17:49 ` [PATCH 16/26] x86, pkeys: dump PKRU with other kernel registers Dave Hansen
2015-09-16 17:49 ` [PATCH 18/26] x86, pkeys: add Kconfig prompt to existing config option Dave Hansen
2015-09-16 17:49 ` [PATCH 19/26] [NEWSYSCALL] mm, multi-arch: pass a protection key in to calc_vm_flag_bits() Dave Hansen
2015-09-16 17:49 ` [PATCH 20/26] [NEWSYSCALL] mm: implement new mprotect_pkey() system call Dave Hansen
2015-09-16 17:49 ` [PATCH 22/26] [HIJACKPROT] mm: Pass the 4-bit protection key in via PROT_ bits to syscalls Dave Hansen
2015-09-16 17:49 ` [PATCH 21/26] [NEWSYSCALL] x86: wire up mprotect_key() system call Dave Hansen
2015-09-16 17:49 ` [PATCH 24/26] [HIJACKPROT] x86, pkeys: mask off pkeys bits in mprotect() Dave Hansen
2015-09-16 17:49 ` [PATCH 25/26] x86, pkeys: actually enable Memory Protection Keys in CPU Dave Hansen
2015-09-16 17:49 ` [PATCH 23/26] [HIJACKPROT] x86, pkeys: add x86 version of arch_validate_prot() Dave Hansen
2015-09-16 17:49 ` [PATCH 26/26] x86, pkeys: Documentation Dave Hansen
2015-09-20 8:55 ` Ingo Molnar
2015-09-21 4:34 ` Dave Hansen
2015-09-24 9:49 ` Ingo Molnar
2015-09-24 19:10 ` Dave Hansen
2015-09-24 19:17 ` Andy Lutomirski
2015-09-25 7:16 ` Ingo Molnar [this message]
2015-09-25 6:15 ` Ingo Molnar
2015-10-01 11:17 ` Ingo Molnar
2015-10-01 20:39 ` Kees Cook
2015-10-01 20:45 ` Andy Lutomirski
2015-10-02 6:23 ` Ingo Molnar
2015-10-02 17:50 ` Dave Hansen
2015-10-03 7:27 ` Ingo Molnar
2015-10-06 23:28 ` Dave Hansen
2015-10-07 7:11 ` Ingo Molnar
2015-10-16 15:12 ` Dave Hansen
2015-10-21 18:55 ` Andy Lutomirski
2015-10-21 19:11 ` Dave Hansen
2015-10-21 23:22 ` Andy Lutomirski
2015-10-01 20:58 ` Dave Hansen
2015-10-01 22:33 ` Dave Hansen
2015-10-01 22:35 ` Kees Cook
2015-10-01 22:39 ` Dave Hansen
2015-10-01 22:48 ` Linus Torvalds
2015-10-01 22:56 ` Dave Hansen
2015-10-02 1:38 ` Linus Torvalds
2015-10-02 18:08 ` Dave Hansen
2015-10-02 7:09 ` Ingo Molnar
2015-10-03 6:59 ` Ingo Molnar
2015-10-02 11:49 ` Paolo Bonzini
2015-10-02 11:58 ` Linus Torvalds
2015-10-02 12:14 ` Paolo Bonzini
2015-10-03 6:46 ` Ingo Molnar
2015-10-01 22:57 ` Andy Lutomirski
2015-10-02 6:09 ` Ingo Molnar
2015-10-03 8:17 ` Ingo Molnar
2015-10-07 20:24 ` Dave Hansen
2015-10-07 20:39 ` Andy Lutomirski
2015-10-07 20:47 ` Dave Hansen
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