From owner-freebsd-current@freebsd.org Sat Sep 7 16:18:00 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 616F2D6DBA for ; Sat, 7 Sep 2019 16:18:00 +0000 (UTC) (envelope-from kostikbel@gmail.com) 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 46QfjL62sqz3Fw1 for ; Sat, 7 Sep 2019 16:17:58 +0000 (UTC) (envelope-from kostikbel@gmail.com) Received: from tom.home (kib@localhost [127.0.0.1]) by kib.kiev.ua (8.15.2/8.15.2) with ESMTPS id x87GHnlL008111 (version=TLSv1.3 cipher=TLS_AES_256_GCM_SHA384 bits=256 verify=NO); Sat, 7 Sep 2019 19:17:52 +0300 (EEST) (envelope-from kostikbel@gmail.com) DKIM-Filter: OpenDKIM Filter v2.10.3 kib.kiev.ua x87GHnlL008111 Received: (from kostik@localhost) by tom.home (8.15.2/8.15.2/Submit) id x87GHn7f008110; Sat, 7 Sep 2019 19:17:49 +0300 (EEST) (envelope-from kostikbel@gmail.com) X-Authentication-Warning: tom.home: kostik set sender to kostikbel@gmail.com using -f Date: Sat, 7 Sep 2019 19:17:49 +0300 From: Konstantin Belousov To: Cy Schubert Cc: Harlan Stenn , Vladimir Zakharov , freebsd-current@freebsd.org Subject: Re: ntpd segfaults on start Message-ID: <20190907161749.GJ2559@kib.kiev.ua> References: <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> <20190907075619.GG2559@kib.kiev.ua> <201909071309.x87D9GxZ089964@slippy.cwsent.com> <20190907153226.GI2559@kib.kiev.ua> <201909071545.x87FjLS6004448@slippy.cwsent.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <201909071545.x87FjLS6004448@slippy.cwsent.com> User-Agent: Mutt/1.12.1 (2019-06-15) X-Spam-Status: No, score=-1.0 required=5.0 tests=ALL_TRUSTED,BAYES_00, DKIM_ADSP_CUSTOM_MED,FORGED_GMAIL_RCVD,FREEMAIL_FROM, NML_ADSP_CUSTOM_MED autolearn=no 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: 46QfjL62sqz3Fw1 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=fail reason="No valid SPF, No valid DKIM" header.from=gmail.com (policy=none); spf=softfail (mx1.freebsd.org: 2001:470:d5e7:1::1 is neither permitted nor denied by domain of kostikbel@gmail.com) smtp.mailfrom=kostikbel@gmail.com X-Spamd-Result: default: False [-2.98 / 15.00]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; DMARC_POLICY_SOFTFAIL(0.10)[gmail.com : No valid SPF, No valid DKIM,none]; FROM_HAS_DN(0.00)[]; RCPT_COUNT_THREE(0.00)[4]; FREEMAIL_FROM(0.00)[gmail.com]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; TAGGED_RCPT(0.00)[]; HAS_XAW(0.00)[]; R_SPF_SOFTFAIL(0.00)[~all]; MIME_GOOD(-0.10)[text/plain]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_SOME(0.00)[]; NEURAL_HAM_SHORT(-0.98)[-0.977,0]; IP_SCORE_FREEMAIL(0.00)[]; IP_SCORE(0.00)[ip: (-2.65), ipnet: 2001:470::/32(-4.45), asn: 6939(-3.15), country: US(-0.05)]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; FREEMAIL_ENVFROM(0.00)[gmail.com]; ASN(0.00)[asn:6939, ipnet:2001:470::/32, country:US]; MIME_TRACE(0.00)[0:+]; RCVD_TLS_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2] 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 16:18:00 -0000 On Sat, Sep 07, 2019 at 08:45:21AM -0700, Cy Schubert wrote: > I've been able to set the memlock rlimit as low as 20 MB. The issue is > letting it default to 0 which allows ntp to mlockall() anything it wants. > ntpd on my sandbox is currently using 18 MB. Default stack size on amd64 is 512M, and default stack gap percentage is 3%. This means that the gap can be as large as ~17MB. If 3MB is enough for the stack of the main thread of ntpd, then fine.