From owner-freebsd-hackers@freebsd.org Sun Dec 20 08:42:51 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 91EEE4BCB87 for ; Sun, 20 Dec 2020 08:42:51 +0000 (UTC) (envelope-from pjfloyd@wanadoo.fr) Received: from smtp.smtpout.orange.fr (smtp01.smtpout.orange.fr [80.12.242.123]) (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 4CzGMG3gtLz4ZbR for ; Sun, 20 Dec 2020 08:42:50 +0000 (UTC) (envelope-from pjfloyd@wanadoo.fr) Received: from [192.168.1.17] ([90.112.25.211]) by mwinf5d77 with ME id 6Yim240014ZGaNJ03Yim8M; Sun, 20 Dec 2020 09:42:46 +0100 X-ME-Helo: [192.168.1.17] X-ME-Auth: cGpmbG95ZEB3YW5hZG9vLmZy X-ME-Date: Sun, 20 Dec 2020 09:42:46 +0100 X-ME-IP: 90.112.25.211 Subject: Re: pthread_self() problem in DRD To: freebsd-hackers@freebsd.org References: <61236c3a-05b8-7986-e95d-a9369eaf522b@wanadoo.fr> From: Paul Floyd Message-ID: <56cf3993-778e-be75-bd2f-39fbe90e83c8@wanadoo.fr> Date: Sun, 20 Dec 2020 09:42:47 +0100 User-Agent: Mozilla/5.0 (X11; FreeBSD amd64; rv:78.0) Gecko/20100101 Thunderbird/78.6.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 8bit Content-Language: en-US X-Rspamd-Queue-Id: 4CzGMG3gtLz4ZbR 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 80.12.242.123) smtp.mailfrom=pjfloyd@wanadoo.fr X-Spamd-Result: default: False [-0.10 / 15.00]; FREEMAIL_FROM(0.00)[wanadoo.fr]; TO_DN_NONE(0.00)[]; FROM_EQ_ENVFROM(0.00)[]; RCVD_TLS_LAST(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]; MID_RHS_MATCH_FROM(0.00)[]; MIME_TRACE(0.00)[0:+]; ARC_NA(0.00)[]; NEURAL_HAM_MEDIUM(-1.00)[-1.000]; FROM_HAS_DN(0.00)[]; RBL_DBL_DONT_QUERY_IPS(0.00)[80.12.242.123:from]; TO_MATCH_ENVRCPT_ALL(0.00)[]; NEURAL_HAM_LONG(-1.00)[-1.000]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[wanadoo.fr]; AUTH_NA(1.00)[]; RCPT_COUNT_ONE(0.00)[1]; SPAMHAUS_ZRD(0.00)[80.12.242.123:from:127.0.2.255]; NEURAL_SPAM_SHORT(1.00)[1.000]; RCVD_IN_DNSWL_NONE(0.00)[80.12.242.123:from]; R_SPF_NA(0.00)[no SPF record]; RWL_MAILSPIKE_POSSIBLE(0.00)[80.12.242.123:from]; RCVD_COUNT_TWO(0.00)[2]; MAILMAN_DEST(0.00)[freebsd-hackers] 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: Sun, 20 Dec 2020 08:42:51 -0000 Soooo ... Quicky test paulf> LD_PRELOAD=/lib/libthr.so.3 ../../vg-in-place --tool=drd -q ./dlopen_main ./dlopen_lib.so In main: creating thread 1 Hello World! It's me, thread #1! No assert, so I have a workaround at least If I add #if defined(VGO_freebsd)    {       dlclose(dlopen("/lib/libthr.so.3", RTLD_NOW|RTLD_GLOBAL|RTLD_NODELETE));    } #endif Then I get paulf> ../../vg-in-place --tool=drd -q ./dlopen_main ./dlopen_lib.so In main: creating thread 1 Hello World! It's me, thread #1! ==22973== pthread_join(): invalid thread ID 0x5401570 ==22973==    at 0x4860F29: pthread_join_intercept (drd_pthread_intercepts.c:731) ==22973==    by 0x4860F29: pthread_join (drd_pthread_intercepts.c:738) ==22973==    by 0x4CB47DC: foo (in /usr/home/paulf/scratch/valgrind/drd/tests/dlopen_lib.so) ==22973==    by 0x201B38: main (dlopen_main.c:26) ==22973== OK, so that's better than hitting the assert. Now I need to figure out why there is an extra call to pthread_join(). A+ Paul