From owner-freebsd-hackers@freebsd.org Thu Nov 5 12:20:40 2020 Return-Path: Delivered-To: freebsd-hackers@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 CF852467005 for ; Thu, 5 Nov 2020 12:20:40 +0000 (UTC) (envelope-from pjfloyd@wanadoo.fr) Received: from smtp.smtpout.orange.fr (smtp07.smtpout.orange.fr [80.12.242.129]) (using TLSv1 with cipher DHE-RSA-AES128-SHA (128/128 bits)) (Client CN "Bizanga Labs SMTP Client Certificate", Issuer "Bizanga Labs CA" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 4CRjKN0d6nz4cNm for ; Thu, 5 Nov 2020 12:20:39 +0000 (UTC) (envelope-from pjfloyd@wanadoo.fr) Received: from [192.168.1.17] ([2.7.192.66]) by mwinf5d42 with ME id ocLe230061SQe2i03cLezE; Thu, 05 Nov 2020 13:20:38 +0100 X-ME-Helo: [192.168.1.17] X-ME-Auth: cGpmbG95ZEB3YW5hZG9vLmZy X-ME-Date: Thu, 05 Nov 2020 13:20:38 +0100 X-ME-IP: 2.7.192.66 Subject: Re: Extra memory mapping seen on freebsd-12 which was not seen in freebsd-11 To: freebsd-hackers@freebsd.org References: <9CCF59F6-06F2-4352-94E5-C508E165D0C2@wanadoo.fr> From: Paul Floyd Message-ID: <88f9ce22-2c31-9e17-9aa8-60347816800f@wanadoo.fr> Date: Thu, 5 Nov 2020 13:20:37 +0100 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:78.0) Gecko/20100101 Thunderbird/78.4.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Content-Language: en-US X-Rspamd-Queue-Id: 4CRjKN0d6nz4cNm X-Spamd-Bar: + Authentication-Results: mx1.freebsd.org; dkim=none; dmarc=none; spf=none (mx1.freebsd.org: domain of pjfloyd@wanadoo.fr has no SPF policy when checking 80.12.242.129) smtp.mailfrom=pjfloyd@wanadoo.fr X-Spamd-Result: default: False [1.90 / 15.00]; RCVD_TLS_LAST(0.00)[]; ARC_NA(0.00)[]; MID_RHS_MATCH_FROM(0.00)[]; FROM_HAS_DN(0.00)[]; RBL_DBL_DONT_QUERY_IPS(0.00)[80.12.242.129:from]; FREEMAIL_FROM(0.00)[wanadoo.fr]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; TO_DN_NONE(0.00)[]; DMARC_NA(0.00)[wanadoo.fr]; AUTH_NA(1.00)[]; RCPT_COUNT_ONE(0.00)[1]; SPAMHAUS_ZRD(0.00)[80.12.242.129:from:127.0.2.255]; RWL_MAILSPIKE_POSSIBLE(0.00)[80.12.242.129:from]; NEURAL_SPAM_SHORT(1.00)[1.000]; RCVD_IN_DNSWL_NONE(0.00)[80.12.242.129:from]; RECEIVED_SPAMHAUS_PBL(0.00)[2.7.192.66:received]; R_SPF_NA(0.00)[no SPF record]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; FREEMAIL_ENVFROM(0.00)[wanadoo.fr]; ASN(0.00)[asn:3215, ipnet:80.12.240.0/20, country:FR]; MIME_TRACE(0.00)[0:+]; MAILMAN_DEST(0.00)[freebsd-hackers]; RCVD_COUNT_TWO(0.00)[2] X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 05 Nov 2020 12:20:40 -0000 On 10/17/20 6:29 AM, karnajit wangkhem wrote: > Hi Paul, > > The mappings of these applications existed prior to the guard change, which > was fine as no mapping existed on the memory range. With migration to > stable 12, I was doubting that these mappings are no longer correct. But at > the same time, does valgrind have to own this segment, which only came post > certain freebsd releases? Hi I'm not sure if Valgrind needs to own the guest stack in order to be able to grow it. Could you open a bugzilla item for this (on valgrind-devel)? That way I'll be sure not to forget about it. A+ Paul