From owner-freebsd-stable@freebsd.org Fri Sep 13 13:17:52 2019 Return-Path: Delivered-To: freebsd-stable@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 55750F177E for ; Fri, 13 Sep 2019 13:17:52 +0000 (UTC) (envelope-from dewaynegeraghty@gmail.com) Received: from mail-wm1-x330.google.com (mail-wm1-x330.google.com [IPv6:2a00:1450:4864:20::330]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (2048 bits) client-digest SHA256) (Client CN "smtp.gmail.com", Issuer "GTS CA 1O1" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 46VGQl3rx3z4cpR; Fri, 13 Sep 2019 13:17:51 +0000 (UTC) (envelope-from dewaynegeraghty@gmail.com) Received: by mail-wm1-x330.google.com with SMTP id p7so2741353wmp.4; Fri, 13 Sep 2019 06:17:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; 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Fri, 13 Sep 2019 06:17:49 -0700 (PDT) MIME-Version: 1.0 References: <20190824204114.GG71821@kib.kiev.ua> <20190824222817.GJ71821@kib.kiev.ua> <20190825120342.GN71821@kib.kiev.ua> <2a0ad34a5c57489732296e43d50b42b5f3923f96.camel@freebsd.org> <20190910174841.GC2559@kib.kiev.ua> In-Reply-To: <20190910174841.GC2559@kib.kiev.ua> From: Dewayne Geraghty Date: Fri, 13 Sep 2019 23:17:21 +1000 Message-ID: Subject: Re: ntpd doesn't like ASLR on stable/12 post-r350672 To: Konstantin Belousov Cc: Ian Lepore , freebsd-stable stable X-Rspamd-Queue-Id: 46VGQl3rx3z4cpR X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=pass header.d=gmail.com header.s=20161025 header.b=RJh/vTSE; dmarc=pass (policy=none) header.from=gmail.com; spf=pass (mx1.freebsd.org: domain of dewaynegeraghty@gmail.com designates 2a00:1450:4864:20::330 as permitted sender) smtp.mailfrom=dewaynegeraghty@gmail.com X-Spamd-Result: default: False [-3.00 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; R_DKIM_ALLOW(-0.20)[gmail.com:s=20161025]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[3]; FREEMAIL_FROM(0.00)[gmail.com]; R_SPF_ALLOW(-0.20)[+ip6:2a00:1450:4000::/36]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; IP_SCORE(0.00)[ip: (-9.26), ipnet: 2a00:1450::/32(-2.96), asn: 15169(-2.24), country: US(-0.05)]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; IP_SCORE_FREEMAIL(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; TO_DN_ALL(0.00)[]; DKIM_TRACE(0.00)[gmail.com:+]; DMARC_POLICY_ALLOW(-0.50)[gmail.com,none]; RCVD_IN_DNSWL_NONE(0.00)[0.3.3.0.0.0.0.0.0.0.0.0.0.0.0.0.0.2.0.0.4.6.8.4.0.5.4.1.0.0.a.2.list.dnswl.org : 127.0.5.0]; FREEMAIL_TO(0.00)[gmail.com]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+,1:+,2:~]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:15169, ipnet:2a00:1450::/32, country:US]; RCVD_COUNT_TWO(0.00)[2]; RCVD_TLS_ALL(0.00)[]; DWL_DNSWL_NONE(0.00)[gmail.com.dwl.dnswl.org : 127.0.5.0] Content-Type: text/plain; charset="UTF-8" X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 13 Sep 2019 13:17:52 -0000 The data and stack sizes are interesting when comparing ntpd 4.2.7p411 (9.2 from 2014) vs 4.2.8p12 (on 12.1Pre) # sh -c 'ntpd --version ; procstat -l $(pgrep ntpd)|grep -E "data|stack|lock"' ntpd 4.2.7p411@1.2483-o Sun Mar 9 01:25:57 UTC 2014 (1) 34798 ntpd datasize 524288 kB 524288 kB 34798 ntpd stacksize 65536 kB 65536 kB 34798 ntpd memorylocked 32768 kB 32768 kB ntpd 4.2.8p12-a (1) 46470 ntpd datasize 32768 MB 32768 MB 46470 ntpd stacksize 204800 B 524288 KB 46470 ntpd memorylocked 32768 KB 32768 KB /usr/local/bin/ntpd only runs with a stack_gap=0 per kern.elf64.aslr.stack_gap=0 kern.elf64.aslr.honor_sbrk=1 kern.elf64.aslr.pie_enable=1 kern.elf64.aslr.enable=1 kern.elf64.nxstack=1 (incidentally ntpd running with uid ntpd)