Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752884AbdGEM1R (ORCPT ); Wed, 5 Jul 2017 08:27:17 -0400 Received: from shadbolt.e.decadent.org.uk ([88.96.1.126]:56681 "EHLO shadbolt.e.decadent.org.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752698AbdGEM1P (ORCPT ); Wed, 5 Jul 2017 08:27:15 -0400 Message-ID: <1499257606.2707.39.camel@decadent.org.uk> Subject: Re: [PATCH] mm: larger stack guard gap, between vmas From: Ben Hutchings To: Linus Torvalds , John Haxby Cc: Michal Hocko , Willy Tarreau , Hugh Dickins , Oleg Nesterov , "Jason A. Donenfeld" , Rik van Riel , Larry Woodman , "Kirill A. Shutemov" , Tony Luck , "James E.J. Bottomley" , Helge Diller , James Hogan , Laura Abbott , Greg KH , "security@kernel.org" , linux-distros@vs.openwall.org, Qualys Security Advisory , LKML , Ximin Luo Date: Wed, 05 Jul 2017 13:26:46 +0100 In-Reply-To: References: <20170619142358.GA32654@1wt.eu> <1498009101.2655.6.camel@decadent.org.uk> <20170621092419.GA22051@dhcp22.suse.cz> <1498042057.2655.8.camel@decadent.org.uk> <1499126133.2707.20.camel@decadent.org.uk> <20170704084122.GC14722@dhcp22.suse.cz> <20170704093538.GF14722@dhcp22.suse.cz> <20170704094728.GB22013@1wt.eu> <20170704104211.GG14722@dhcp22.suse.cz> <20170704113611.GA4732@decadent.org.uk> Content-Type: multipart/signed; micalg="pgp-sha512"; protocol="application/pgp-signature"; boundary="=-YH47Nk5FxPpvybMn561B" X-Mailer: Evolution 3.22.6-1 Mime-Version: 1.0 X-SA-Exim-Connect-IP: 2a02:8011:400e:2:6f00:88c8:c921:d332 X-SA-Exim-Mail-From: ben@decadent.org.uk X-SA-Exim-Scanned: No (on shadbolt.decadent.org.uk); SAEximRunCond expanded to false Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1968 Lines: 58 --=-YH47Nk5FxPpvybMn561B Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, 2017-07-04 at 09:18 -0700, Linus Torvalds wrote: > > On Tue, Jul 4, 2017 at 4:36 AM, Ben Hutchings wro= te: > >=20 > > That's what I was thinking of.=C2=A0=C2=A0Tried the following patch: > >=20 > > Subject: mmap: Ignore VM_NONE mappings when checking for space to > > =C2=A0expand the stack >=20 > This looks sane to me. >=20 > I'm going to ignore it in this thread, and assume that it gets sent as > a patch separately, ok? >=20 > It would be good to have more acks on it. >=20 > Also, separately, John Haxby kind of implied that the LibreOffice > regression on i386 is already fixed by commit f4cb767d76cf ("mm: fix > new crash in unmapped_area_topdown()"). >=20 > Or was that a separate issue? They are separate issues. Ben. --=20 Ben Hutchings Anthony's Law of Force: Don't force it, get a larger hammer. --=-YH47Nk5FxPpvybMn561B Content-Type: application/pgp-signature; name="signature.asc" Content-Description: This is a digitally signed message part -----BEGIN PGP SIGNATURE----- iQIzBAABCgAdFiEErCspvTSmr92z9o8157/I7JWGEQkFAllc2wYACgkQ57/I7JWG EQllUQ/7BsqolAtRQuUtnL/oOm6yO89tPbu5YSSzcYaD6wpQXqvXvmcV1C0hTngX yWUesR5/I7DZgmKCPAWyZb/CkyKTpyUCtgAI/5ytVf4EJhrBY8+kD1m+zowBevtW f4A/b+xm0eApgDWNkCxvujFlzvC5NV/FMZBaLkXqjSbpdWtxGgzm8FfUVMrLAQ0D 1RoFdeJ3GMc8cB0u6SZ9MPn8IAdEcwxrKEdxKYaYnbK+KN1bK1/kVy9gIeRoTnOn kVDxBv2nHlOhMQhzXdLQcB1AAFhP1xtQBUO1xYHw1jqKGi2jPOD1M6gLEIxeOZyT 5IqditNIvaQVl0a1Uspzsmab/TiyyK8c4d08NpJnWvl3xSJboLuYK2Di2VvmM8C1 royZJysNUkPDj6mFjIHG6Vs+AT4Wl6cY+RzjxtZPDKr1WSx1HnoNoRP7ZSzYkDow BlrLObjUqJEKHYYOhEAkWlNIf9YhhR9BfYJ81NjqDJUlrMZylhJ7o/L5jH20hsFy itwTQJ5oEKfWh1WGMUQrsba5tsUoVvDfHfaLS4q67NzfvXKOBDAFN3dmIlFIrnjL S1tsIlr3494GdmBHqcp7E5KhurwWdZDcUC1zHxDIWpumXeM8cK4OeRzb971pNlhZ 63v8FU9vBGgzm0HL7hlUEydQhf+d2XiMDHr1Wg6NS9FaAfGCoKY= =2D1E -----END PGP SIGNATURE----- --=-YH47Nk5FxPpvybMn561B--