From owner-freebsd-current@freebsd.org Sat Sep 7 07:56:32 2019 Return-Path: Delivered-To: freebsd-current@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 A069CE8EC4 for ; Sat, 7 Sep 2019 07:56:32 +0000 (UTC) (envelope-from kib@freebsd.org) Received: from kib.kiev.ua (kib.kiev.ua [IPv6:2001:470:d5e7:1::1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits)) (Client did not present a certificate) by mx1.freebsd.org (Postfix) with ESMTPS id 46QRZm0bgJz4F5k for ; Sat, 7 Sep 2019 07:56:31 +0000 (UTC) (envelope-from kib@freebsd.org) Received: from tom.home (kib@localhost [127.0.0.1]) by kib.kiev.ua (8.15.2/8.15.2) with ESMTPS id x877uJ2U088667 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Sat, 7 Sep 2019 10:56:22 +0300 (EEST) (envelope-from kib@freebsd.org) DKIM-Filter: OpenDKIM Filter v2.10.3 kib.kiev.ua x877uJ2U088667 Received: (from kostik@localhost) by tom.home (8.15.2/8.15.2/Submit) id x877uJTR088666; Sat, 7 Sep 2019 10:56:19 +0300 (EEST) (envelope-from kib@freebsd.org) X-Authentication-Warning: tom.home: kostik set sender to kib@freebsd.org using -f Date: Sat, 7 Sep 2019 10:56:19 +0300 From: Konstantin Belousov To: Harlan Stenn Cc: Cy Schubert , Vladimir Zakharov , freebsd-current@freebsd.org Subject: Re: ntpd segfaults on start Message-ID: <20190907075619.GG2559@kib.kiev.ua> References: <20190905061251.rrip6635ebbfimsv@vzakharov> <20190905063354.qxecqjkafikdtdyq@vzakharov> <201909051307.x85D7MGs034053@slippy.cwsent.com> <20190905142817.GB2559@kib.kiev.ua> <201909060355.x863tRhP089169@slippy.cwsent.com> <201909060639.x866dJ7f090176@slippy.cwsent.com> <201909062356.x86NuKdk003780@slippy.cwsent.com> <156d1e7c-0dbb-8707-90b3-13ae97c87449@nwtime.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <156d1e7c-0dbb-8707-90b3-13ae97c87449@nwtime.org> User-Agent: Mutt/1.12.1 (2019-06-15) X-Spam-Status: No, score=-2.9 required=5.0 tests=ALL_TRUSTED,BAYES_00 autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on tom.home X-Rspamd-Queue-Id: 46QRZm0bgJz4F5k X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; none X-Spamd-Result: default: False [-2.97 / 15.00]; local_wl_from(0.00)[freebsd.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.97)[-0.970,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; TAGGED_RCPT(0.00)[]; ASN(0.00)[asn:6939, ipnet:2001:470::/32, country:US] X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 07 Sep 2019 07:56:32 -0000 On Sat, Sep 07, 2019 at 12:53:19AM -0700, Harlan Stenn wrote: > Cy, > > On 9/6/2019 4:56 PM, Cy Schubert wrote: > > ... > > > > For those who enable ASLR, a better workaround is, to add this to your > > ntp.conf: > > > > rlimit memlock 64 > > > > Until a more precise default is determined. > > Should I change the default value for FreeBSD-12 to be 64 for now? > > I can get this change in place for the upcoming ntp-4.2.8p14 release, > and we can change it later if needed. ASLR is disabled by default, so if anybody tweak a system config, she should know better to tweak ntpd as well. I am fine with changing the defaults for ntpd, but I think that more useful would be to update the documentation (but where to put it ?).