[{"id":3677553,"web_url":"http://patchwork.ozlabs.org/comment/3677553/","msgid":"<20260415092533.3877-1-linuxtestproject.agent@gmail.com>","list_archive_url":null,"date":"2026-04-15T09:25:32","subject":"Re: [LTP] Make ioctl_pidfd02 valgrind-compliant","submitter":{"id":93132,"url":"http://patchwork.ozlabs.org/api/people/93132/","name":null,"email":"linuxtestproject.agent@gmail.com"},"content":"Hi Martin,\n\nOn Wed, 15 Apr 2026 10:03:44 +0200, Martin Cermak wrote:\n> Make ioctl_pidfd02 valgrind-compliant\n\n[...]\n\n> This patch sets the parent_tidptr explicitly, making valgrind happy.\n\nThis is a bug fix; please add a Fixes: tag referencing the commit that\noriginally introduced the raw clone() fallback without the parent_tidptr\nargument.\n\n---\nNote:\n\nOur agent completed the review of the patch. The agent can sometimes\nproduce false positives although often its findings are genuine. If you\nfind issues with the review, please comment this email or ignore the\nsuggestions.\n\nRegards,\nLTP AI Reviewer","headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","ltp@lists.linux.it"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","ltp@picard.linux.it"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=fail reason=\"signature verification failed\" (2048-bit key;\n unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256\n header.s=20251104 header.b=LzA95juw;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.linux.it\n (client-ip=213.254.12.146; helo=picard.linux.it;\n envelope-from=ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it;\n receiver=patchwork.ozlabs.org)"],"Received":["from picard.linux.it (picard.linux.it [213.254.12.146])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4fwbNM5xfHz1yHM\n\tfor ; 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charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Errors-To":"ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it","Sender":"\"ltp\" "}},{"id":3677611,"web_url":"http://patchwork.ozlabs.org/comment/3677611/","msgid":"","list_archive_url":null,"date":"2026-04-15T11:34:22","subject":"Re: [LTP] Make ioctl_pidfd02 valgrind-compliant","submitter":{"id":8530,"url":"http://patchwork.ozlabs.org/api/people/8530/","name":"Cyril Hrubis","email":"chrubis@suse.cz"},"content":"Hi!\n> #ifdef __s390x__\n> -\tpid = syscall(__NR_clone, NULL, flags);\n> +\tpid = syscall(__NR_clone, NULL, flags, args.pidfd);\n> #else\n> -\tpid = syscall(__NR_clone, flags, NULL);\n> +\tpid = syscall(__NR_clone, flags, NULL, args.pidfd);\n> #endif\n\nAren't we missing more that that?\n\nLooking at kernel/fork.c:\n\n#ifdef __ARCH_WANT_SYS_CLONE\n#ifdef CONFIG_CLONE_BACKWARDS\nSYSCALL_DEFINE5(clone, unsigned long, clone_flags, unsigned long, newsp,\n int __user *, parent_tidptr,\n unsigned long, tls,\n int __user *, child_tidptr)\n#elif defined(CONFIG_CLONE_BACKWARDS2)\nSYSCALL_DEFINE5(clone, unsigned long, newsp, unsigned long, clone_flags,\n int __user *, parent_tidptr,\n int __user *, child_tidptr,\n unsigned long, tls)\n#elif defined(CONFIG_CLONE_BACKWARDS3)\nSYSCALL_DEFINE6(clone, unsigned long, clone_flags, unsigned long, newsp,\n int, stack_size,\n int __user *, parent_tidptr,\n int __user *, child_tidptr,\n unsigned long, tls)\n#else\nSYSCALL_DEFINE5(clone, unsigned long, clone_flags, unsigned long, newsp,\n int __user *, parent_tidptr,\n int __user *, child_tidptr,\n unsigned long, tls)\n#endif\n{\n struct kernel_clone_args args = {\n .flags = (lower_32_bits(clone_flags) & ~CSIGNAL),\n .pidfd = parent_tidptr,\n .child_tid = child_tidptr,\n .parent_tid = parent_tidptr,\n .exit_signal = (lower_32_bits(clone_flags) & CSIGNAL),\n .stack = newsp,\n .tls = tls,\n };\n\n return kernel_clone(&args);\n}\n#endif\n\nthere is at least child_tidptr and tls as well.","headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","ltp@lists.linux.it"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","ltp@picard.linux.it"],"Authentication-Results":["legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.linux.it\n (client-ip=2001:1418:10:5::2; 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Wed, 15 Apr 2026 13:34:19 +0200 (CEST)","from imap1.dmz-prg2.suse.org (imap1.dmz-prg2.suse.org\n [IPv6:2a07:de40:b281:104:10:150:64:97])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest\n SHA256)\n (No client certificate requested)\n by smtp-out2.suse.de (Postfix) with ESMTPS id 7713E5BD23;\n Wed, 15 Apr 2026 11:34:13 +0000 (UTC)","from imap1.dmz-prg2.suse.org (localhost [127.0.0.1])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest\n SHA256)\n (No client certificate requested)\n by imap1.dmz-prg2.suse.org (Postfix) with ESMTPS id 643EC4B9AF;\n Wed, 15 Apr 2026 11:34:13 +0000 (UTC)","from dovecot-director2.suse.de ([2a07:de40:b281:106:10:150:64:167])\n by imap1.dmz-prg2.suse.org with ESMTPSA id V509F7V332kDcgAAD6G6ig\n (envelope-from ); Wed, 15 Apr 2026 11:34:13 +0000"],"Date":"Wed, 15 Apr 2026 13:34:22 +0200","From":"Cyril Hrubis ","To":"Martin Cermak ","Message-ID":"","References":"<20260415082547.vgn23q2aobxy5gzv@lida.tpb.lab.eng.brq.redhat.com>","MIME-Version":"1.0","Content-Disposition":"inline","In-Reply-To":"<20260415082547.vgn23q2aobxy5gzv@lida.tpb.lab.eng.brq.redhat.com>","X-Rspamd-Pre-Result":["action=no action; module=replies;\n Message is reply to one we originated","action=no action; module=replies;\n Message is reply to one we originated"],"X-Rspamd-Server":"rspamd2.dmz-prg2.suse.org","X-Spamd-Result":"default: False [-4.00 / 50.00];\n\tREPLY(-4.00)[]","X-Rspamd-Queue-Id":"7713E5BD23","X-Rspamd-Action":"no action","X-Spam-Score":"-4.00","X-Spam-Level":"","X-Spam-Status":"No, score=0.0 required=7.0 tests=SPF_HELO_NONE,SPF_PASS\n shortcircuit=no autolearn=disabled version=4.0.1","X-Spam-Checker-Version":"SpamAssassin 4.0.1 (2024-03-25) on in-6.smtp.seeweb.it","X-Virus-Scanned":"clamav-milter 1.0.9 at in-6.smtp.seeweb.it","X-Virus-Status":"Clean","Subject":"Re: [LTP] Make ioctl_pidfd02 valgrind-compliant","X-BeenThere":"ltp@lists.linux.it","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"Linux Test Project ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Cc":"valgrind-developers@lists.sourceforge.net, ltp@lists.linux.it","Content-Type":"text/plain; charset=\"us-ascii\"","Content-Transfer-Encoding":"7bit","Errors-To":"ltp-bounces+incoming=patchwork.ozlabs.org@lists.linux.it","Sender":"\"ltp\" "}},{"id":3678569,"web_url":"http://patchwork.ozlabs.org/comment/3678569/","msgid":"<20260417083443.v2yfuwvz2dstty7s@lida.tpb.lab.eng.brq.redhat.com>","list_archive_url":null,"date":"2026-04-17T08:34:43","subject":"Re: [LTP] Make ioctl_pidfd02 valgrind-compliant","submitter":{"id":88822,"url":"http://patchwork.ozlabs.org/api/people/88822/","name":"Martin Cermak","email":"mcermak@redhat.com"},"content":"Hi Cyril,\n\nOn Wed 2026-04-15 13:34 , Cyril Hrubis wrote:\n> > #ifdef __s390x__\n> > -\tpid = syscall(__NR_clone, NULL, flags);\n> > +\tpid = syscall(__NR_clone, NULL, flags, args.pidfd);\n> > #else\n> > -\tpid = syscall(__NR_clone, flags, NULL);\n> > +\tpid = syscall(__NR_clone, flags, NULL, args.pidfd);\n> > #endif\n> \n> Aren't we missing more that that?\n> \n> Looking at kernel/fork.c:\n> \n> #ifdef __ARCH_WANT_SYS_CLONE\n> #ifdef CONFIG_CLONE_BACKWARDS\n> SYSCALL_DEFINE5(clone, unsigned long, clone_flags, unsigned long, newsp,\n> int __user *, parent_tidptr,\n> unsigned long, tls,\n> int __user *, child_tidptr)\n> #elif defined(CONFIG_CLONE_BACKWARDS2)\n> SYSCALL_DEFINE5(clone, unsigned long, newsp, unsigned long, clone_flags,\n> int __user *, parent_tidptr,\n> int __user *, child_tidptr,\n> unsigned long, tls)\n> #elif defined(CONFIG_CLONE_BACKWARDS3)\n> SYSCALL_DEFINE6(clone, unsigned long, clone_flags, unsigned long, newsp,\n> int, stack_size,\n> int __user *, parent_tidptr,\n> int __user *, child_tidptr,\n> unsigned long, tls)\n> #else\n> SYSCALL_DEFINE5(clone, unsigned long, clone_flags, unsigned long, newsp,\n> int __user *, parent_tidptr,\n> int __user *, child_tidptr,\n> unsigned long, tls)\n> #endif\n> {\n> struct kernel_clone_args args = {\n> .flags = (lower_32_bits(clone_flags) & ~CSIGNAL),\n> .pidfd = parent_tidptr,\n> .child_tid = child_tidptr,\n> .parent_tid = parent_tidptr,\n> .exit_signal = (lower_32_bits(clone_flags) & CSIGNAL),\n> .stack = newsp,\n> .tls = tls,\n> };\n> \n> return kernel_clone(&args);\n> }\n> #endif\n> \n> there is at least child_tidptr and tls as well.\n\nI've updated my patch (and commit message) accordingly, and sent\nit via git send-email per your suggestion - as a separate email.\nPlease check.\n\nCheers,\nMartin","headers":{"Return-Path":"","X-Original-To":["incoming@patchwork.ozlabs.org","ltp@lists.linux.it"],"Delivered-To":["patchwork-incoming@legolas.ozlabs.org","ltp@picard.linux.it"],"Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (1024-bit key;\n unprotected) header.d=lists.linux.it header.i=@lists.linux.it\n header.a=rsa-sha256 header.s=picard header.b=RpfU5qkD;\n\tdkim=fail reason=\"signature verification failed\" (1024-bit key;\n unprotected) header.d=redhat.com header.i=@redhat.com header.a=rsa-sha256\n header.s=mimecast20190719 header.b=hwrxF+8H;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.linux.it\n (client-ip=2001:1418:10:5::2; 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