From mboxrd@z Thu Jan 1 00:00:00 1970 From: Kees Cook Subject: Re: [kernel-hardening] Re: x86: PIE support and option to extend KASLR randomization Date: Wed, 19 Jul 2017 12:21:05 -0700 Message-ID: References: <20170718223333.110371-1-thgarnie@google.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from mail6.bemta5.messagelabs.com ([195.245.231.135]) by lists.xenproject.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dXuWz-0001YY-Ib for xen-devel@lists.xenproject.org; Wed, 19 Jul 2017 19:21:09 +0000 Received: by mail-it0-f41.google.com with SMTP id a62so5729192itd.1 for ; Wed, 19 Jul 2017 12:21:07 -0700 (PDT) In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xen.org Sender: "Xen-devel" To: Christopher Lameter Cc: Michal Hocko , KVM , =?UTF-8?B?UmFkaW0gS3LEjW3DocWZ?= , Peter Zijlstra , Catalin Marinas , Christopher Li , "x86@kernel.org" , Paul Gortmaker , Pavel Machek , "H . Peter Anvin" , "kernel-hardening@lists.openwall.com" , Thomas Gleixner , linux-arch , Herbert Xu , Daniel Borkmann , Matthew Wilcox , Joerg Roedel , Peter Foley , Christian Borntraeger , linux-sparse@vger.kernel.org, Matthias Kaehlcke , xen-devel@lists.xenproject.org, Borisla List-Id: xen-devel@lists.xenproject.org T24gV2VkLCBKdWwgMTksIDIwMTcgYXQgNzowOCBBTSwgQ2hyaXN0b3BoZXIgTGFtZXRlciA8Y2xA bGludXguY29tPiB3cm90ZToKPiBPbiBUdWUsIDE4IEp1bCAyMDE3LCBUaG9tYXMgR2FybmllciB3 cm90ZToKPgo+PiBQZXJmb3JtYW5jZS9TaXplIGltcGFjdDoKPj4gSGFja2JlbmNoICg1MCUgYW5k IDE2MDAlIGxvYWRzKToKPj4gIC0gUElFIGVuYWJsZWQ6IDclIHRvIDglIG9uIGhhbGYgbG9hZCwg MTAlIG9uIGhlYXZ5IGxvYWQuCj4+IHNsYWJfdGVzdCAoYXZlcmFnZSBvZiAxMCBydW5zKToKPj4g IC0gUElFIGVuYWJsZWQ6IDMlIHRvIDQlCj4+IEtlcm5iZW5jaCAoYXZlcmFnZSBvZiAxMCBIYWxm IGFuZCBPcHRpbWFsIHJ1bnMpOgo+PiAgLSBQSUUgZW5hYmxlZDogNSUgdG8gNiUKPj4KPj4gU2l6 ZSBvZiB2bWxpbnV4IChVYnVudHUgY29uZmlndXJhdGlvbik6Cj4+ICBGaWxlIHNpemU6Cj4+ICAt IFBJRSBkaXNhYmxlZDogNDcyOTI4NjcyIGJ5dGVzICgtMC4wMDAxNjklIGZyb20gYmFzZWxpbmUp Cj4+ICAtIFBJRSBlbmFibGVkOiAyMTY4Nzg0NjEgYnl0ZXMgKC01NC4xNCUgZnJvbSBiYXNlbGlu ZSkKPgo+IE1heWJlIHdlIG5lZWQgc29tZXRoaW5nIGxpa2UgQ09ORklHX1BBUkFOT0lBIHNvIHRo YXQgd2UgY2FuIGRldGVybWluZSBhdAo+IGJ1aWxkIHRpbWUgaG93IG11Y2ggcGVyZm9ybWFuY2Ug d2Ugd2FudCB0byBzYWNyaWZpY2UgZm9yIHBlcmZvcm1hbmNlPwo+Cj4gSXRzIGdvaW5nIHRvIGJl IGRpZmZpY3VsdCB0byB1bmRlcnN0YW5kIHdoYXQgYWxsIHRoZXNlIGhhcmRlbmluZyBjb25maWcK PiBvcHRpb25zIGRvLgoKVGhpcyBraW5kIG9mIHRoaW5nIGdvdCBkaXNjdXNzZWQgcmVjZW50bHks IGFuZCBsaWtlCkNPTkZJR19FWFBFUklNRU5UQUwsIGEgZ2xvYmFsIGNvbmZpZyBkb2Vzbid0IHJl YWxseSB3b3JrLiBUaGUgYmVzdAp0aGluZyB0byBkbyBpcyB0byBkb2N1bWVudCBlYWNoIGNvbmZp ZyBhcyB3ZWxsIGFzIHBvc3NpYmxlIGFuZCBzeXN0ZW0KYnVpbGRlcnMgY2FuIGRlY2lkZS4KCi1L ZWVzCgotLSAKS2VlcyBDb29rClBpeGVsIFNlY3VyaXR5CgpfX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fXwpYZW4tZGV2ZWwgbWFpbGluZyBsaXN0Clhlbi1kZXZl bEBsaXN0cy54ZW4ub3JnCmh0dHBzOi8vbGlzdHMueGVuLm9yZy94ZW4tZGV2ZWwK