From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by sourceware.org (Postfix) with ESMTP id 4F65E3A13CC0 for ; Thu, 22 Apr 2021 11:55:40 +0000 (GMT) DMARC-Filter: OpenDMARC Filter v1.3.2 sourceware.org 4F65E3A13CC0 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-588-uKLxngV1O8K7ystQ_ZKqhQ-1; Thu, 22 Apr 2021 07:55:38 -0400 X-MC-Unique: uKLxngV1O8K7ystQ_ZKqhQ-1 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id A235887139C; Thu, 22 Apr 2021 11:55:37 +0000 (UTC) Received: from oldenburg.str.redhat.com (ovpn-113-20.ams2.redhat.com [10.36.113.20]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 974C7369A; Thu, 22 Apr 2021 11:55:36 +0000 (UTC) From: Florian Weimer To: Szabolcs Nagy Cc: Pedro Alves , gdb-patches@sourceware.org, Florian Weimer via Libc-alpha Subject: Re: [PATCH v3] nptl_db: Support different libpthread/ld.so load orders (bug 27744) References: <87tuo24kxi.fsf@oldenburg.str.redhat.com> <87czunoo5m.fsf@oldenburg.str.redhat.com> <20210422072821.GE9028@arm.com> <87o8e6k9br.fsf@oldenburg.str.redhat.com> <20210422090501.GH9028@arm.com> <20210422094808.GJ9028@arm.com> Date: Thu, 22 Apr 2021 13:55:54 +0200 In-Reply-To: <20210422094808.GJ9028@arm.com> (Szabolcs Nagy's message of "Thu, 22 Apr 2021 10:48:09 +0100") Message-ID: <87pmymildh.fsf@oldenburg.str.redhat.com> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.2 (gnu/linux) MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain X-Spam-Status: No, score=-6.4 required=5.0 tests=BAYES_00, DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, DKIM_VALID_EF, RCVD_IN_DNSWL_LOW, RCVD_IN_MSPIKE_H4, RCVD_IN_MSPIKE_WL, SPF_HELO_NONE, SPF_PASS, TXREP autolearn=ham autolearn_force=no version=3.4.2 X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on server2.sourceware.org X-BeenThere: libc-alpha@sourceware.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Libc-alpha mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 Apr 2021 11:55:41 -0000 * Szabolcs Nagy: > The 04/22/2021 10:05, Szabolcs Nagy via Gdb-patches wrote: >> The 04/22/2021 10:33, Florian Weimer wrote: >> > * Szabolcs Nagy: >> > > on the aarch64 buildbot i see >> > > >> > > FAIL: nptl/tst-pthread-gdb-attach >> > > >> > > $ cat nptl/tst-pthread-gdb-attach.out >> > > +set debug libthread-db 1 >> > > +add-symbol-file /work/glibc-aarch64-linux/build/build/nptl/tst-pthread-gdb-attach >> > > add symbol table from file "/work/glibc-aarch64-linux/build/build/nptl/tst-pthread-gdb-attach" >> > > +set auto-load safe-path /work/glibc-aarch64-linux/build/build/nptl_db >> > > +set libthread-db-search-path /work/glibc-aarch64-linux/build/build/nptl_db >> > > +attach 461328 >> > > [New LWP 461329] >> > > Trying host libthread_db library: /work/glibc-aarch64-linux/build/build/nptl_db/libthread_db.so.1. >> > > td_ta_new failed: application not linked with libthread >> > > thread_db_load_search returning 0 >> > >> > Unfortunately I cannot reproduce this with binutils 2.30, GDB 8.2 and >> > GCC 8.4.1. Has your environment newer or older versions? >> >> ubuntu flavour of >> >> gcc 8.2.0 >> binutils 2.31.1 >> gdb 8.2 >> >> happens on armhf and aarch64 too. > > happens with gcc-10.2.0, gdb-9.2, binutils-2.34 too > (still ubuntu) Still no luck with binutils 2.35.1, a GCC 11 snapshot, and GDB 10.1. Do you run this test as a regular user? Could it be caused by YAMA ptrace policies? Thanks, Florian